Lower power, integrated radio transmitter and receiver

Details Lower power, integrated radio transmitter and receiver Lower power, integrated radio transmitter and receiver

H - Electricity

04

B

H04B 1/40 (2006.01) H03L 7/099 (2006.01) H04B 1/04 (2006.01) H04B 1/16 (2006.01)

Patent

CA 2547372

A low power (optionally, self-powered) integrated transceiver using on-chip antennas is provided. The transmitter and receiver utilize phase-locked loops (PLLs) which initially, in a closed-loop state, pre-tune (i.e. phase-lock) voltage controlled oscillators (VCOs) before opening the loops to allow them to transmit and receive data. The TX, in the opened-loop state, disables the loop components while (FM) modulating the VCO. The RX, in the opened-loop state, injection-locks the VCO with the incoming (FM) modulated signal while the remaining loop components serve to demodulate the signal. For both the TX and RX an integrated antenna is used and, advantageously, the TX comprises a dual purpose inductor which functions as both an inductor in the voltage-controlled oscillator and the integrated antenna.

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