Reconfigurable RF circuits based on integrated MEMS switches

MEMS phase shifters, based on switchable passive components, are used to achieve a variety of circuits with low insertion loss, wide bandwidth and compact die size. Integration of MEMS switches with active GaAs pHEMT MMICs achieves reconfigurable LNA and PA devices. A 4 b true time-delay phase-shifter achieves /spl les/1.2 dB insertion loss on a 7 mm/sup 2/ die.

[1]  J.B. Hacker,et al.  A monolithic MEMS switched dual-path power amplifier , 2001, IEEE Microwave and Wireless Components Letters.

[2]  Gabriel M. Rebeiz.  RF MEMS: Theory, Design and Technology , 2003 .

[3]  R. Mihailovich,et al.  A DC-to-40 GHz four-bit RF MEMS true-time delay network , 2001, IEEE Microwave and Wireless Components Letters.

[4]  G.M. Rebeiz,et al.  A 2-bit miniature X-band MEMS phase shifter , 2003, IEEE Microwave and Wireless Components Letters.

[5]  G.M. Rebeiz,et al.  A very-low-loss 2-bit X-band RF MEMS phase shifter , 2002, 2002 IEEE MTT-S International Microwave Symposium Digest (Cat. No.02CH37278).

[6]  J.A. Higgins,et al.  MEM relay for reconfigurable RF circuits , 2001, IEEE Microwave and Wireless Components Letters.

[7]  Gabriel M. Rebeiz,et al.  Low-loss 2- and 4-bit TTD MEMS phase shifters based on SP4T switches , 2003 .

[8]  J.J. Yao,et al.  Monolithic GaAs PHEMT MMICs integrated with high performance MEMS microrelays , 1999, 1999 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference.

[9]  R. Mihailovich,et al.  A Ka-band 3-bit RF MEMS true-time-delay network , 2003 .

[10]  G.M. Rebeiz,et al.  A 4-bit miniature X-band MEMS phase shifter using switched-LC networks , 2003, IEEE MTT-S International Microwave Symposium Digest, 2003.