MEMS varactor enabled frequency-reconfigurable LNA and PA in the upper UHF band

A Jajoo, L Wang, T Mukherjee - 2009 IEEE MTT-S International …, 2009 - ieeexplore.ieee.org
A Jajoo, L Wang, T Mukherjee
2009 IEEE MTT-S International Microwave Symposium Digest, 2009ieeexplore.ieee.org
A low-power frequency-reconfigurable narrowband LNA and PA have been designed using
tunable RF-MEMS passives in a 0.35 mum BiCMOS process. The LNA's operating
frequency varies from 2.7 GHz to 3.1 GHz and the PA's operating frequency varies from 2.7
GHz to 3.2 GHz (using the current 2.5: 1 varactor tuning range; next generation varactors
have 6.9: 1 tuning range). With only 2.5 mW of power the LNA attains (S 21, NF) of (7.7 dB,
4.2 dB) at 2.7 GHz and (10.2 dB, 4.8 dB) at 3.1 GHz. The PA delivers 10.1-13.7 dBm of …
A low-power frequency-reconfigurable narrowband LNA and PA have been designed using tunable RF-MEMS passives in a 0.35 mum BiCMOS process. The LNA's operating frequency varies from 2.7 GHz to 3.1 GHz and the PA's operating frequency varies from 2.7 GHz to 3.2 GHz (using the current 2.5:1 varactor tuning range; next generation varactors have 6.9:1 tuning range). With only 2.5 mW of power the LNA attains (S 21 , NF) of (7.7 dB, 4.2 dB) at 2.7 GHz and (10.2 dB, 4.8 dB) at 3.1 GHz. The PA delivers 10.1-13.7 dBm of power and has a PAE of 7.5-17% depending on the frequency.
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