Systems, methods and apparatuses for high power...

Details Systems, methods and apparatuses for high power... Systems, methods and apparatuses for high power...

2007-09-14

2010-06-15

Phu, Sanh D (Department: 2618)

Telecommunications

Transmitter and receiver at same station

With transmitter-receiver switching or interaction prevention

C455S083000, C455S277100, C455S278100, C455S319000

Reexamination Certificate

active

07738841

ABSTRACT:
Embodiments of the invention may provide for a CMOS antenna switch, which may be referred to as a CMOS SPDT switch. The CMOS antenna switch may operate at a plurality of frequencies, perhaps around 900 MHz, 1.9 GHz and 2.1 GHz according to an embodiment of the invention. The CMOS antenna switch may include both a receiver switch and a transmit switch. The receiver switch may utilize a multi-stack transistor with body substrate switching and attachment of external capacitor between drain and gate to block high power signals from the transmit path as well as to maintain low insertion loss at the receiver path. Exemplary embodiments of the CMOS antenna switch may provide for 38 dBm P 0.1 dB at multi bands (e.g., 900 MHz, 1.8 GHz, and 2.1 GHz). In addition, −60 dBc second and third harmonic performance up to 30 dBm input, may be obtained according to example embodiments of the invention.

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