@article{jin_ortiz_mortazawi_2004, title={Design and performance of a new digital phase shifter at X-band}, volume={14}, DOI={10.1109/LMWC.2004.832049}, number={9}, journal={IEEE Microwave and Wireless Components Letters}, author={Jin, Z. and Ortiz, S. and Mortazawi, A.}, year={2004}, pages={428–430} }
 @article{tombak_maria_ayguavives_jin_stauf_kingon_mortazawi_2003, title={Voltage-controlled RF filters employing thin-film barium- strontium-titanate tunable capacitors}, volume={51}, DOI={10.1109/TMTT.2002.807822}, number={2}, journal={IEEE Transactions on Microwave Theory and Techniques}, author={Tombak, A. and Maria, J. P. and Ayguavives, F. T. and Jin, Z. and Stauf, G. T. and Kingon, A. I. and Mortazawi, A.}, year={2003}, pages={462–467} }