Simultaneous multiple signal reception and transmission using frequency multiplexing and shared processing

An apparatus for multiple signal reception, comprising:

• a plurality of receiver (RX) front end circuits, each RX front end circuit operative to generate an intermediate frequency (IF) signal at a particular frequency band;
• a signal combiner operative to combine said plurality of IF signals using frequency division multiplexing to generate a combined IF signal thereby;
• at least one RX processing path operative to process said combined IF signal to generate a plurality of data output signals thereby;
• and
• wherein the number of RX processing paths is less than the number of front end circuits.

A single chip radio apparatus, comprising:

• at least one transmitter;
• a plurality of RF front end receive (RX) circuits, each RX circuit operative to receive at least one wireless signal and to generate an intermediate frequency (IF) signal at a particular IF frequency band therefrom;
• a signal combiner coupled to said plurality of RF front end RX circuits, said signal combiner operative to combine the outputs of said plurality of RF front end RX circuits utilizing frequency division multiplexing to generate an analog combined IF signal therefrom;
• a single shared analog to digital converter operative to convert said analog combined IF signal into a digital combined IF signal therefrom;
• and
• a receive processing path operative to filter and demodulate said digital combined IF signal and to generate a plurality of data output signals in response thereto.

A single chip radio apparatus, comprising:

• at least one transmitter;
• a plurality of RF front end receive (RX) circuits, each RX circuit comprising a dedicated analog to digital converter and operative to generate a digitized intermediate frequency (IF) signal at a particular IF frequency band;
• a signal combiner coupled to said plurality of RF front end RX circuits, said signal combiner operative to combine said digitized IF signals to generate a multiplexed IF signal therefrom;
• and
• a single receive processing path operative to filter and demodulate said multiplexed IF signal and to generate a plurality of data output signals in response thereto.

A method of simultaneous full-duplex signal reception and transmission, said method comprising the steps of:

• sharing a single local oscillator between a receiver and a polar transmitter during full-duplex operation;
• phase modulating said local oscillator to generate a modulated TX signal thereby;
• and
• removing said phase modulation from said modulated TX signal for use as a local oscillator signal by said receiver.

A full-duplex transceiver, comprising:

• a local oscillator operative to be shared between a receiver and a polar transmitter during full-duplex operation;
• said transmitter comprising means for phase modulating said local oscillator;
• said receiver comprising means for removing phase modulation from said phase modulated local oscillator;
• a transmit processing path coupled to said transmitter and operative to generate a transmit signal in accordance with a signal input thereto;
• and
• a receive processing path coupled to said receiver and operative to generate a data output signal thereby.

A full-duplex transceiver, comprising:

• a local oscillator operative to be shared between a receiver and a polar transmitter during full duplex operation;
• said receiver coupled to said local oscillator operative to generate a first local oscillator clock signal;
• and
• an edge synthesizer operative to receive said first local oscillator clock signal and to synthesize a second local oscillator clock signal therefrom.