Single rf oscillator technique for bult-in tune, test, and calibration of a transceiver
AssigneeArm Limited
InventorsAnthony Kresimir STAMPALIA, Mario LAFUENTE
Life of this patent
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Abstract
Methods and various structures provide for loopback tuning, testing, and calibrating of a transceiver, including: supplying RF drive to both a transmitter and a receiver of the transceiver from one oscillator; applying a modulation waveform to a transceiver block of the transceiver to produce an amplitude-modulated signal; converting a sideband of the amplitude-modulated signal to a baseband signal having a frequency suitable for processing by a receiver digital block, where processing the baseband signal produces a digital output; and performing tuning, testing, and calibrating of the transceiver block, based at least in part on the digital output.
Claims19
A transceiver, comprising:
- a transmitter;
- a receiver having a receiver digital block;
- one oscillator operable to supply RF drive to both the transmitter and the receiver;
- a transceiver block;
- a controller;
- and
- a tuning, testing, and calibrating (TTC) controller operable to place the transceiver into a TTC mode, to control the controller to apply a modulation waveform to the transceiver block of the transceiver to produce an amplitude-modulated signal, and to convert a sideband of the amplitude-modulated signal to a baseband signal having a frequency suitable for processing by the receiver digital block, where processing the baseband signal produces a digital output.
Dependencies are inferred from the claim text.