US 7,065,327 B1 · Single-chip CMOS direct-conversion transceiver

Abstract

A single-chip CMOS direct conversion transceiver includes an RF circuit, a transmitter having a synthesizer, a receiver having a baseband filter, and a demodulator. The synthesizer is coupled to the RF circuit. The baseband filter is coupled to the RF circuit and the synthesizer. The demodulator is coupled to the baseband filter. The RF circuit, the synthesizer, the baseband filter, and the demodulator are arranged and configured in CMOS devices and provide a complete interface between an antenna and a voiceband codec.

Claims14

Dependent claims

A single-chip transceiver comprising:

a single RF (radio frequency) combined input/output port in a time-division duplex (TDD) system;
a receiver including an amplifier with an impedance transformation network having an input and output terminal, the amplifier input and output terminal being coupled to the RF input/output port;
a baseband filter coupled to the amplifier;
a demodulator coupled to the baseband filter;
and
a transmitter including a power amplifier with a matched impedance network having an input and output port, the output port of the power amplifier being coupled to the RF input/output port, wherein a synthesizer is coupled to the power amplifier.

3 more elements

Dependencies are inferred from the claim text.

Single-chip CMOS direct-conversion transceiver

Life of this patent

Single-chip CMOS direct-conversion transceiver

Life of this patent

Abstract

Claims14