Works (74)

Updated: April 4th, 2024 08:28

2023 journal article

Low Profile GRIN Lenses With Integrated Matching Using 3-D Printed Ceramic

IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION, 4, 12–22.

By: Y. Oh n, N. Kordsmeier n, H. Askari n & J. Adams n

author keywords: Lenses; Permittivity; Apertures; Horn antennas; Ceramics; Three-dimensional displays; Reflection; Horn; GRIN lens; high permittivity ceramic; quarter wavelength matching; tapered matching; unit cells; 3D print
TL;DR: This paper investigates a shortened horn antenna with high gain that is enabled by a 3D-printed gradient index (GRIN) lens composed of high permittivity zirconia and results show good agreement with simulations, including gain performance equivalent to a horn of 2.4x longer length. (via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: March 13, 2023

2022 article

Antenna Element Design Using Characteristic Mode Analysis: Insights and Research Directions.

Adams, J. J., Genovesi, S., Yang, B., & Antonino-Daviu, E. (2022, February 11). IEEE ANTENNAS AND PROPAGATION MAGAZINE, Vol. 2.

By: J. Adams n, S. Genovesi, B. Yang* & E. Antonino-Daviu

author keywords: Antennas; Eigenvalues and eigenfunctions; Antenna feeds; MIMO communication; Resonant frequency; Microstrip antennas; Dielectric resonator antennas
Sources: Web Of Science, ORCID
Added: March 14, 2022

2022 journal article

Fundamental Limits on Substructure Dielectric Resonator Antennas

IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION, 3, 59–68.

By: B. Yang*, J. Kim n & J. Adams n

author keywords: Antennas; Dielectrics; Q-factor; Eigenvalues and eigenfunctions; Shape; Geometry; Helical antennas; Dielectric resonator antennas; characteristic modes; substructure antenna; fundamental limit; resonant frequency; Q factor
Sources: Web Of Science, ORCID
Added: January 18, 2022

2022 article

Transient analysis of dynamically switched frequency shift keyed transmitters

Srivastava, S., & Adams, J. J. (2022, April 8). IET MICROWAVES ANTENNAS & PROPAGATION, Vol. 4.

By: S. Srivastava n & J. Adams n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID
Added: April 18, 2022

2021 journal article

An UHF Reconfigurable Liquid-Metal Monopole Antenna Based on a 2-D Surface

IEEE TRANSACTIONS ON COMPONENTS PACKAGING AND MANUFACTURING TECHNOLOGY, 11(11), 1980–1987.

By: F. Xie*, J. Adams n & M. Tong*

author keywords: Antennas; Metals; Liquids; Antenna radiation patterns; Resonant frequency; Antenna measurements; Microchannels; 2-D liquid metal antenna; electrochemically-driven method; reconfigurable monopole antenna; ultrahigh frequency (UHF) antenna
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID
Added: December 13, 2021

2021 article

DC-Assisted Stabilization of Internal Oscillations for Improved Symbol Transitions in a Direct Antenna Modulation Transmitter

Huang, D., Schab, K., Dusenbury, J. K., Sluss, B., & Adams, J. J. (2021, August 13). IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, Vol. 8.

By: D. Huang n, K. Schab*, J. Dusenbury n, B. Sluss n & J. Adams n

author keywords: Dams; Antennas; Oscillators; Switches; Transmitting antennas; Integrated circuit modeling; Antenna measurements; Direct antenna modulation (DAM); electrically small antennas (ESAs); parasitic circuit model; time-varying circuits
TL;DR: Measured phase shift keyed waveforms transmitted using the modified direct antenna modulation system with an auxiliary DC source show significant increases in signal fidelity, including a 10–20-dB reduction in error vector magnitude compared to a time-invariant system. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID
Added: January 3, 2022

2021 article

Implementation of A Flat-Bottom Luneburg Lens Based on Conformal Transformation Optics

2021 IEEE MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM (IMS), pp. 556–558.

By: B. Yang*, Y. Oh n, X. Hu* & J. Adams n

author keywords: transformation optics; numerical conformal mapping; Luneburg lens; unit cell
Sources: Web Of Science, ORCID
Added: October 11, 2022

2021 journal article

Metallophobic Coatings to Enable Shape Reconfigurable Liquid Metal Inside 3D Printed Plastics

ACS APPLIED MATERIALS & INTERFACES, 13(11), 12709–12718.

By: J. Ma n, V. Bharambe n, K. Persson n, A. Bachmann n, I. Joshipura n, J. Kim*, K. Oh*, J. Patrick n, J. Adams n, M. Dickey n

author keywords: liquid metal; additive manufacturing; reconfigurable circuit; metallophobic surface; liquid metal actuation; 4D printing
TL;DR: It is shown that silica particles suspended in an appropriate solvent can be injected inside cavities to coat the walls, and this technique creates a transparent, nanoscopically rough coating that prevents adhesion of liquid metals on various 3D printed plastics and commercial polymers. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: November 26, 2020

2021 journal article

RESHAPE: A Liquid Metal-Based Reshapable Aperture for Compound Frequency, Pattern, and Polarization Reconfiguration

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 69(5), 2581–2594.

By: V. Bharambe n, J. Ma n, M. Dickey n & J. Adams n

author keywords: Liquid metal (LM); microstrip antenna; parasitic coupling; reconfigurable antenna; reshapable aperture (RESHAPE)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID
Added: May 5, 2021

2021 journal article

Unit cell estimation of volumetrically-varying permittivity in additively-manufactured ceramic lattices with X-ray computed tomography

MATERIALS & DESIGN, 210.

author keywords: Additive Manufacturing; Functionally Graded Lattices; Ceramics; Zirconia; Nano-particle Jetting; Material Jetting; X-ray tomography
Sources: Web Of Science, ORCID
Added: November 8, 2021

2020 article

3D Printed Zirconia for UWB Stacked Conical Ring DRA

2020 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION AND NORTH AMERICAN RADIO SCIENCE MEETING, pp. 41–42.

By: V. Bharambe n, Y. Oh n, J. Adams n, D. Negro* & E. MacDonald*

author keywords: 3D Printing; zirconia; Dielectric Resonator Antenna; UWB antenna
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: June 28, 2021

2020 article

A Circuit Model for Energy Synchronous Direct Antenna Modulation Using an Electrically Small Loop

2020 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION AND NORTH AMERICAN RADIO SCIENCE MEETING, pp. 459–460.

By: J. Dusenbury n, D. Huang n & J. Adams n

author keywords: direct antenna modulation; loop antenna; inductive energy
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID
Added: June 28, 2021

2020 article

A Decoupling Network Based on Characteristic Port Modes

2020 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION AND NORTH AMERICAN RADIO SCIENCE MEETING, pp. 1667–1668.

By: B. Yang* & J. Adams n

Sources: Web Of Science, ORCID
Added: June 28, 2021

2020 journal article

An Energy-Synchronous Direct Antenna Modulation Method for Phase Shift Keying

IEEE OPEN JOURNAL OF ANTENNAS AND PROPAGATION, 1, 41–46.

By: K. Schab*, D. Huang n & J. Adams n

author keywords: Electrically small antennas; direct modulation; antenna measurements; phase shift keying; time-varying circuits
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID
Added: December 6, 2021

2020 article

Design of a 3D Printed Gradient Index Lens Using High Permittivity Ceramic

2020 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION AND NORTH AMERICAN RADIO SCIENCE MEETING, pp. 1431–1432.

By: Y. Oh n, V. Bharambe n, J. Adams n, D. Negro n & E. MacDonald*

author keywords: 3D printing; zirconia; high dielectric constant; effective permittivity; GRIN lens
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: June 28, 2021

2020 article

Investigation of Ringing Effects on Phase Shift Keyed Direct Antenna Modulation Transmitters

2020 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION AND NORTH AMERICAN RADIO SCIENCE MEETING, pp. 1817–1818.

By: D. Huang n, J. Adams n & K. Schab*

TL;DR: It is demonstrated that it is the parasitics of the circuit that reduce the ability of the system to store voltage and achieve fast transitions, particularly between certain combinations of symbols. (via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: June 28, 2021

2020 journal article

Investigation of biasing conditions and energy dissipation in electrochemically controlled capillarity liquid metal electronics

ELECTRONICS LETTERS, 56(7), 323–324.

By: M. Wang*, W. Lei*, J. Dong*, M. Dickey n & J. Adams n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID
Added: June 1, 2020

2020 journal article

Transmission of a broadband FSK signal from a dynamically tuned narrowband antenna

IET MICROWAVES ANTENNAS & PROPAGATION, 14(13), 1651–1654.

By: S. Srivastava n & J. Adams n

author keywords: microstrip antennas; frequency shift keying; broadband antennas; carrier spacing; dynamic tuning; static antenna; carrier frequency; symbol rate; maximum achievable data rate; broadband FSK signal; dynamically tuned narrowband antenna; frequency reconfigurable patch antenna; frequency-shift keying signals; static impedance bandwidth; binary FSK schemes; radiated signal amplitude
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID
Added: November 24, 2020

2019 journal article

A Shape-First, Feed-Next Design Approach for Compact Planar MIMO Antennas

PROGRESS IN ELECTROMAGNETICS RESEARCH M, 77, 157–165.

By: B. Yang*, J. Zhou & J. Adams*

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID
Added: February 25, 2019

2019 journal article

Microwave dielectric properties of zirconia fabricated using NanoParticle Jetting (TM)

ADDITIVE MANUFACTURING, 27, 586–594.

By: Y. Oh n, V. Bharambe n, B. Mummareddy*, J. Martin*, J. McKnight*, M. Abraham*, J. Walker*, K. Rogers ...

Contributors: Y. Oh n, V. Bharambe n, B. Mummareddy*, J. Martin*, J. McKnight*, M. Abraham*, J. Walker*, K. Rogers ...

author keywords: Material jetting; Ceramic; Zirconia; XJet; Dielectric; Electromagnetic; Microwave; Cavity; Antenna
Sources: Web Of Science, ORCID
Added: June 24, 2019

2019 journal article

Pulse Characteristics of a Direct Antenna Modulation Transmitter

IEEE Access, 7, 1–1.

By: K. Schab*, D. Huang n & J. Adams n

author keywords: Antenna measurements; electrically small antennas; narrowband antennas; time varying circuits
TL;DR: Time- and frequency-domain models for the effects of a DAM scheme for the transmission of ON–OFF-keyed RF signals are proposed and it is demonstrated that the removal of this filter improves the signal quality as observed in eye diagrams of the demodulated received signals. (via Semantic Scholar)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: March 9, 2019

2018 journal article

Characterization of Intermodulation Distortion in Reconfigurable Liquid Metal Antennas

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 17(2), 279–282.

By: M. Wang n, I. Kilgore n, M. Steer n & J. Adams n

author keywords: Intermodulation distortion (IMD); linearity; liquid metal (LM); reconfigurable antenna
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2018 journal article

Effect of bending and padding on the electromagnetic performance of a laser-cut fabric patch antenna

Textile Research Journal, 9(14), 004051751880120.

By: Y. Mukai n, V. Bharambe n, J. Adams n & M. Suh n

Contributors: Y. Mukai n, V. Bharambe n, J. Adams n & M. Suh n

author keywords: textile antenna; conformal patch antenna; protective covering; electromagnetic simulation; antenna measurement
Sources: Crossref, ORCID
Added: March 2, 2019

2018 journal article

Liquid metal-filled 3D antenna array structure with an integrated feeding net-work

IEEE Antennas and Wireless Propagation Letters, 17(5), 739–742.

By: V. Bharambe, D. Parekh, C. Ladd, K. Moussa, M. Dickey & J. Adams

Source: NC State University Libraries
Added: March 9, 2019

2018 journal article

Liquid-Metal-Filled 3-D Antenna Array Structure With an Integrated Feeding Network

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 17(5), 739–742.

By: V. Bharambe n, D. Parekh n, C. Ladd n, K. Moussa*, M. Dickey n & J. Adams n

Contributors: V. Bharambe n, D. Parekh n, C. Ladd n, K. Moussa*, M. Dickey n & J. Adams n

author keywords: 3-D printing; array antenna; coaxial feed network; liquid metal; vacuum filling
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2018 journal article

Lower bounds on sub-structure antenna Q-factor

IEEE Transactions on Antennas and Propagation, 66(7).

By: K. Schab, B. Yang, B. Hughes & J. Adams

Source: NC State University Libraries
Added: March 9, 2019

2018 conference paper

Measuring direct antenna modulation transmitters

Proceedings of the 2018 Allerton Antenna Applications Symposium, 236–247. Monticello, IL.

By: J. Adams, D. Huang & K. Schab

Source: NC State University Libraries
Added: March 9, 2019

2018 journal article

Mechanochromic Stretchable Electronics

ACS APPLIED MATERIALS & INTERFACES, 10(35), 29918–29924.

By: M. Barbee*, K. Mondal n, J. Deng*, V. Bharambe n, T. Neumann n, J. Adams n, N. Boechler*, M. Dickey n, S. Craig*

Contributors: M. Barbee*, K. Mondal n, J. Deng*, V. Bharambe n, T. Neumann n, J. Adams n, N. Boechler*, M. Dickey n, S. Craig*

author keywords: liquid metal; stretchable electronics; polymer mechanochemistry; mechanochromism; silicone elastomers
TL;DR: New functional composites in which stretchable electronic properties are coupled to molecular mechanochromic function, enabling at-a-glance visual cues that inform user control of strain-dependent properties for future stretchable devices are reported. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: October 16, 2018

2018 conference paper

Modal decomposition of transients in direct antenna modulation systems

Proceedings of the 2018 European Conference on Antennas and Propagation (EuCAP). London, UK.

By: K. Schab & J. Adams

Source: NC State University Libraries
Added: March 9, 2019

2018 journal article

Patterning and Reversible Actuation of Liquid Gallium Alloys by Preventing Adhesion on Rough Surfaces

ACS Applied Materials & Interfaces, 10(51), 44686–44695.

By: I. Joshipura n, H. Ayers n, G. Castillo n, C. Ladd n, C. Tabor*, J. Adams n, M. Dickey n

author keywords: superhydrophobic surfaces; surface chemistry; wetting; adhesion; liquid metal; reconfigurable antenna; patterning
TL;DR: The present work confirms that both hydrophobic and hydrophilic rough surfaces prevent oxide adhesion, and shows it is possible to actuate liquid metals in air without leaving neither metal nor oxide residue on surfaces to enable reconfigurable electronics, microfluidics, and soft electrodes. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Crossref, ORCID
Added: December 12, 2018

2018 journal article

Porous textile antenna designs for improved wearability

Smart Materials and Structures, 27(4), 045008.

By: H. Shahariar n, H. Soewardiman n, C. Muchler n, J. Adams n & J. Jur n

author keywords: textile antennas; screen printing; bending; HFSS simulation; wearable electronics
Sources: Crossref, ORCID
Added: March 2, 2019

2018 conference paper

Reversibly Reconfigurable Liquid Metal Patch Antenna Using A Superhydrophobic Spray-Coating

2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 287–288.

By: V. Bharambe n, J. Adams n, I. Joshipura n, H. Ayers n & M. Dickey n

Contributors: V. Bharambe n, J. Adams n, I. Joshipura n, H. Ayers n & M. Dickey n

Event: 2018 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting

Sources: Crossref, ORCID
Added: March 2, 2019

2017 journal article

A Compound Frequency- and Polarization-Reconfigurable Crossed Dipole Using Multidirectional Spreading of Liquid Metal

IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 16, 79–82.

By: M. Wang n, M. Khan n, M. Dickey n & J. Adams n

author keywords: Circuit model; crossed dipole; electrochemically controlled capillarity (ECC); frequency and polarization reconfigurable; liquid metal
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 journal article

Analysis of a Direct Antenna Modulation Transmitter for Wideband OOK With a Narrowband Antenna

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 65(10), 4971–4979.

By: S. Srivastava n & J. Adams n

author keywords: Bit error rate (BER); direct antenna modulation (DAM); ON-OFF keying (OOK)
TL;DR: This paper quantitatively compare the performance of a DAM transmitter to a conventional time-invariant transmit antenna and shows that the fall time of an RF pulse produced with the DAM configuration is measurably shorter than with the conventional system; however, the pulse rise time using both systems is identical. (via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2017 conference paper

Antenna bounds for reduced basis problems

Proceedings of the 2017 International Conference on Electromagnetics in Advanced Applications (ICEAA), 855–857. Verona, Italy.

By: K. Schab, B. Yang & J. Adams

Source: NC State University Libraries
Added: August 6, 2018

2017 conference paper

Calculation of radiation transients in direct antenna modulation systems

2017 ieee international symposium on antennas and propagation & usnc/ursi national radio science meeting, 521–522.

By: K. Schab & J. Adams

Source: NC State University Libraries
Added: August 6, 2018

2017 conference paper

EFIE singularity treatments and their effects on characteristic mode dynamic range

Proceedings of the 2017 European Conference on Antennas and Propagation (EuCAP), 2673–2675. Paris, France.

By: K. Schab, B. Yang & J. Adams

Source: NC State University Libraries
Added: March 9, 2019

2017 conference paper

Quality factor calculations for the characteristic modes of dielectric resonator antennas

2017 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM). Presented at the 2017 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM).

By: B. Yang n & J. Adams n

Event: 2017 United States National Committee of URSI National Radio Science Meeting (USNC-URSI NRSM)

Sources: NC State University Libraries, Crossref, ORCID
Added: August 6, 2018

2017 conference paper

Transmission of broadband signals using narrowband antennas: theory, measurement and limitations

Proceedings of the 2017 Antenna Applications Symposium, 212–225. Monticello, IL.

By: D. Huang, K. Schab, S. Srivastava & J. Adams

Source: NC State University Libraries
Added: March 9, 2019

2017 journal article

Vacuum-filling of liquid metals for 3D printed RF antennas

ADDITIVE MANUFACTURING, 18, 221–227.

By: V. Bharambe n, D. Parekh n, C. Ladd n, K. Moussa*, M. Dickey n & J. Adams n

Contributors: V. Bharambe n, D. Parekh n, C. Ladd n, K. Moussa*, M. Dickey n & J. Adams n

author keywords: 3D printing; Liquid metals; Antennas; Vacuum filling; Microchannels
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2016 conference paper

A modal approach to shape synthesis and feed placement for planar MIMO Antennas

2016 ieee antennas and propagation society international symposium, 15–16.

By: B. Yang & J. Adams

Source: NC State University Libraries
Added: August 6, 2018

2016 journal article

Computing and Visualizing the Input Parameters of Arbitrary Planar Antennas via Eigenfunctions

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 64(7), 2707–2718.

By: B. Yang n & J. Adams n

author keywords: Characteristic modes; circuit model; multiport antennas; planar antennas
Sources: Web Of Science, ORCID
Added: August 6, 2018

2016 conference paper

Mode-based analytical models for arbitrary wire and planar antennas

2016 10th european conference on antennas and propagation (eucap).

By: B. Yang n & J. Adams n

Sources: NC State University Libraries, ORCID
Added: August 6, 2018

2016 journal article

Systematic Shape Optimization of Symmetric MIMO Antennas Using Characteristic Modes

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 64(7), 2668–2678.

By: B. Yang n & J. Adams n

author keywords: Characteristic modes; genetic algorithm (GA); MIMO antenna; Q factor
TL;DR: It is shown that the quality factor of each characteristic mode effectively bounds the performance of any individual port excitation, and can be used to evaluate the fitness of the antenna for multiport excitation. (via Semantic Scholar)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2015 journal article

3D-printed spherical dipole antenna integrated on small RF node

Electronics Letters, 51(9), 661–662.

By: J. Adams*, S. Slimmer, J. Bernhard & J. Lewis

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, Crossref, ORCID
Added: August 6, 2018

2015 journal article

A reconfigurable liquid metal antenna driven by electrochemically controlled capillarity

JOURNAL OF APPLIED PHYSICS, 117(19).

By: M. Wang n, C. Trlica n, M. Khan n, M. Dickey n & J. Adams n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2015 journal article

Handwritten, Soft Circuit Boards and Antennas Using Liquid Metal Nanoparticles

SMALL, 11(48), 6397–6403.

By: Y. Lin n, C. Cooper n, M. Wang n, J. Adams n, J. Genzer n & M. Dickey n

TL;DR: Soft circuit boards can be handwritten by a stylus, which sinters the particles into conductive traces by applying localized mechanical pressure to the elastomeric sheets. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2015 conference paper

Modal Q and efficiency limits on the characteristic modes of multiport apertures

Proceedings of the 2015 Antenna Applications Symposium, 131–141. Monticello, IL.

By: B. Yang & J. Adams

Source: NC State University Libraries
Added: March 9, 2019

2015 conference paper

Modal Q as a bounding metric for MIMO antenna optimization

2015 31st International Review of Progress in Applied Computational Electromagnetics (ACES) vol 31.

By: B. Yang & J. Adams

Source: NC State University Libraries
Added: August 6, 2018

2015 conference paper

Multi-resonant AgNW/PDMS patch antenna for biaxial strain sensing

2015 ieee international symposium on antennas and propagation & usnc/ursi national radio science meeting, 1878–1879.

By: C. Muchler, Z. Cui, Y. Zhu & J. Adams

Source: NC State University Libraries
Added: August 6, 2018

2015 conference paper

Physics-based circuit models for MIMO antennas using characteristic modes

2015 ieee international symposium on antennas and propagation & usnc/ursi national radio science meeting, 852–853.

By: J. Adams & B. Yang

Source: NC State University Libraries
Added: August 6, 2018

2015 conference paper

Pump-free feedback control of a frequency reconfigurable liquid metal monopole

2015 ieee international symposium on antennas and propagation & usnc/ursi national radio science meeting, 2223–2224.

By: M. Wang n, M. Khan n, C. Trlica n, M. Dickey n & J. Adams n

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: NC State University Libraries, ORCID
Added: August 6, 2018

2014 conference paper

Accelerated frequency interpolation of antenna impedances using characteristic modes

2014 ieee antennas and propagation society international symposium (apsursi), 1413–1414.

By: J. Adams

Source: NC State University Libraries
Added: August 6, 2018

2014 journal article

Stretchable and Reversibly Deformable Radio Frequency Antennas Based on Silver Nanowires

ACS APPLIED MATERIALS & INTERFACES, 6(6), 4248–4253.

By: L. Song n, A. Myers n, J. Adams n & Y. Zhu n

Contributors: L. Song n, A. Myers n, J. Adams n & Y. Zhu n

author keywords: silver nanowire; stretchable antenna; wireless strain sensing; printed electronics; microstrip patch antenna
TL;DR: A class of microstrip patch antennas that are stretchable, mechanically tunable, and reversibly deformable and well suited for applications like wireless strain sensing are demonstrated. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, ORCID
Added: August 6, 2018

2013 journal article

Broadband Equivalent Circuit Models for Antenna Impedances and Fields Using Characteristic Modes

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 61(8), 3985–3994.

By: J. Adams n & J. Bernhard*

author keywords: Characteristic modes; circuit model; eigenmode; eigenvalue
TL;DR: It is shown that far field patterns, gain, and beam width of a dipole can be accurately extrapolated over a decade of bandwidth using data at two frequency points and this method also accurately connects circuit models to radiation patterns and other field behavior. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: Web Of Science, ORCID
Added: August 6, 2018

2013 conference paper

Exploiting patterns in characteristic modes for efficient analytical and numerical modeling

Proceedings of the 2013 Antenna Applications Symposium, 145–157. Monticello, IL.

By: J. Adams

Source: NC State University Libraries
Added: March 9, 2019

2013 conference paper

Modeling of dense metallic grids for transparent transmission lines and antennas

2013 ieee antennas and propagation society international symposium (apsursi), 700–701.

By: J. Adams & J. Bernhard

Source: NC State University Libraries
Added: August 6, 2018

2012 conference paper

Eigenmode-based circuit models for antennas

Proceedings of the 2012 Antenna Applications Symposium, 25–37. Monticello, IL.

By: J. Adams & J. Bernhard

Source: NC State University Libraries
Added: March 9, 2019

2012 conference paper

Three-dimensional package-integrated antennas for electrically small sensor nodes

Proceedings of the Government Microwave Applications and Critical Technology Conference (GOMAC). Las Vegas, NV.

By: J. Adams, S. Slimmer, J. Lewis & J. Bernhard

Source: NC State University Libraries
Added: March 9, 2019

2011 journal article

A Modal Approach to Tuning and Bandwidth Enhancement of an Electrically Small Antenna

IEEE Transactions on Antennas and Propagation, 59(4), 1085–1092.

By: J. Adams* & J. Bernhard*

author keywords: Bandwidth; characteristic modes; electrically small antenna; multimode; multiresonant; Q; spherical antenna
Sources: Crossref, ORCID
Added: March 2, 2019

2011 conference paper

Bandwidth limitations, matching, and fabrication of multimode electrically small antennas

Proceedings of the 2011 Antenna Applications Symposium, 162–179. Monticello, IL.

By: J. Adams, S. Slimmer, J. Lewis & J. Bernhard

Source: NC State University Libraries
Added: March 9, 2019

2011 journal article

Comparison of Spherical Antennas Fabricated via Conformal Printing: Helix, Meanderline, and Hybrid Designs

IEEE Antennas and Wireless Propagation Letters, 10, 1425–1428.

By: J. Adams*, S. Slimmer*, T. Malkowski*, E. Duoss*, J. Lewis* & J. Bernhard*

author keywords: Conformal printing; electrically small; impedance matching; quality factor; spherical antenna
Sources: Crossref, ORCID
Added: March 2, 2019

2011 journal article

Conformal Printing of Electrically Small Antennas on Three-Dimensional Surfaces

Advanced Materials, 23(11), 1335–1340.

By: J. Adams*, E. Duoss*, T. Malkowski*, M. Motala*, B. Ahn*, R. Nuzzo*, J. Bernhard*, J. Lewis*

MeSH headings : Electronics; Miniaturization
TL;DR: This work presents a probabilistic procedure for estimating the surface area of nanoporous nanoporous particles using a simple, scalable, and scalable approach that combines a number of techniques, including “spatially scouts” and “computers”. (via Semantic Scholar)
Sources: Crossref, ORCID
Added: March 2, 2019

2011 conference paper

Design of spherical meanderline antennas

Proceedings of the 2011 IEEE International Symposium on Antennas and Propagation, 765–768. Spokane, WA.

By: J. Adams, E. Duoss, T. Malkowski, J. Lewis & J. Bernhard

Source: NC State University Libraries
Added: March 9, 2019

2011 journal article

Microfabrication: Conformal Printing of Electrically Small Antennas on Three-Dimensional Surfaces (Adv. Mater. 11/2011)

Advanced Materials, 23(11), 1304–1304.

By: J. Adams*, E. Duoss*, T. Malkowski*, M. Motala*, B. Ahn*, R. Nuzzo*, J. Bernhard*, J. Lewis*

Sources: Crossref, ORCID
Added: December 28, 2020

2011 journal article

Pen-on-Paper Flexible Electronics

Advanced Materials, 23(30), 3426–3430.

By: A. Russo*, B. Ahn*, J. Adams*, E. Duoss*, J. Bernhard* & J. Lewis*

MeSH headings : Electronics; Ink; Paper; Silver / chemistry
TL;DR: Printed electronics constitute an emerging class of materials with potential application in photovoltaics, and recent attention has focused on paper substrates as a low-cost, enabling platform for fl exible, lightweight, and disposable devices. (via Semantic Scholar)
Sources: Crossref, ORCID
Added: March 2, 2019

2010 conference paper

Tuning small monopole antennas: modes, stubs, and Q

Proceedings of the 2010 Antenna Applications Symposium, 256–269. Monticello, IL.

By: J. Adams & J. Bernhard

Source: NC State University Libraries
Added: March 9, 2019

2009 conference paper

Bandwidth enhancement of a small antenna by modal superposition

Proceedings of the 2009 Antenna Applications Symposium, 1–15. Monticello, IL.

By: J. Adams & J. Bernhard

Source: NC State University Libraries
Added: March 9, 2019

2009 conference paper

Measuring electrically small antennas: Details and implications

2009 IEEE International Workshop on Antenna Technology. Presented at the 2009 IEEE International Workshop on Antenna Technology "Small Antennas and Novel Metamaterials" (iWAT).

By: J. Bernhard*, J. Adams*, M. Anderson & J. Martin*

Event: 2009 IEEE International Workshop on Antenna Technology "Small Antennas and Novel Metamaterials" (iWAT)

UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Crossref, ORCID
Added: March 2, 2019

2009 journal article

Tuning Method for a New Electrically Small Antenna With Low $Q$

IEEE Antennas and Wireless Propagation Letters, 8, 303–306.

By: J. Adams* & J. Bernhard*

author keywords: Bandwidth; electrically small antenna; helical antenna; Q; spherical antenna
Sources: Crossref, ORCID
Added: March 2, 2019

2008 conference paper

A class of electrically small spherical antennas with near-minimum Q

Proceedings of the 2008 Antenna Applications Symposium, 165–175. Monticello, IL.

By: J. Adams & J. Bernhard

Source: NC State University Libraries
Added: March 9, 2019

2008 conference paper

A low Q electrically small spherical antenna

2008 IEEE Antennas and Propagation Society International Symposium. Presented at the 2008 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting.

By: J. Adams* & J. Bernhard*

Event: 2008 IEEE Antennas and Propagation Society International Symposium and USNC/URSI National Radio Science Meeting

Sources: Crossref, ORCID
Added: March 2, 2019

2007 journal article

Physics-Based Subsurface Visualization of Human Tissue

IEEE Transactions on Visualization and Computer Graphics, 13(3), 620–629.

By: R. Sharp*, J. Adams*, R. Machiraju*, R. Lee* & R. Crane*

author keywords: volume rendering; near infrared; biological tissue; light scattering
MeSH headings : Biophysical Phenomena; Biophysics; Computer Graphics; Computer Simulation; Forearm / anatomy & histology; Forearm / blood supply; Humans; Infrared Rays; Models, Anatomic; Optics and Photonics; Phantoms, Imaging; Scattering, Radiation
TL;DR: This approach employs a computational model to simulate light scattering in tissue through the finite element solution of the diffusion equation and applies this model to a numerical phantom to visually reproduce the images generated by real-world tools. (via Semantic Scholar)
Sources: Crossref, ORCID
Added: March 2, 2019

2006 conference paper

Simulating Transillumination in Organic Material with Near Infrared Light

2006 IEEE/NLM Life Science Systems and Applications Workshop. Presented at the 2006 IEEE/NLM Life Science Systems and Applications Workshop.

By: R. Sharp*, J. Adams*, R. Machiraju*, R. Lee* & R. Crane*

Event: 2006 IEEE/NLM Life Science Systems and Applications Workshop

TL;DR: Preliminary results show that the proposed implementation of robust quality adaptive meshing with rapid source calculation and solution updates has a speedup of an order of magnitude compared to naive implementations with similar error rates. (via Semantic Scholar)
Sources: Crossref, ORCID
Added: March 2, 2019

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