Patent ID: 8805296

Claim:
A transceiver circuit comprising a transmit path and a receive path, the transmit path comprising an input for receiving a digital input signal, digital to analogue conversion means for converting the digital input signal to an analogue signal, filtering means for filtering the analogue signal, first frequency synthesizing means for producing a first synthesized RF signal, mixing means for mixing the analogue signal with the RF signal to produce an RF output, and amplifying means for amplifying the RF output for transmission, the amplifying means having an output; and the receive path comprising an input for receiving an RF input, second amplification means for amplifying the RF input, second frequency synthesizing means for generating a second synthesized RF signal, second mixing means for mixing the amplified RF input with the second synthesized RF signal to produce a baseband signal, second filtering means for filtering the baseband signal, and analogue to digital conversion means for converting the baseband signal to a digital output signal, and an output for the digital output signal, switching means arranged to selectively connect together different points of the circuit thereby to bypass at least one component of the circuit and a control input means connected to the switching means and arranged to receive control signals for controlling operation of the switching means, and at least one further input and one further output connected to the at least one component whereby the at least one component can be connected for use in a different application.