Patent ID: 7720443

Claim:
A system for transceiving Time Division Multiple Access (TDMA) telephone communications through a common filter, the system comprising: a tunable, ferro-electric band pass filter (FE BPF) with a control input to accept tuning voltage signals, a first signal port and a second signal port, the FE BPF supplying a selectable frequency passband between signal ports responsive to the tuning voltage signals; a controller with an output to supply tuning voltage signals to the FE BPF; a low noise amplifier (LNA) with a control input to accept amplifier control signals, an input connected to the FE BPF first signal port, and an output; and, a power amplifier (PA) with a control input to accept amplifier control signals, an input, and an output connected to the FE BPF first signal port, wherein the controller includes: an output to supply activation and deactivation control signals to the LNA; and, an output to supply activation and deactivation control signals to the PA; and, wherein the LNA amplifies communications supplied by the FE BPF in response to an LNA activation control signal and deactivates in response to an LNA deactivation control signal; and, wherein the PA amplifies signals for transmission in the FE BPF in response to a PA activation control signal and deactivates in response to a PA deactivation control signal.