Transceiver having multiple signal processing modes of operation
AssigneeSilicon Laboratories Inc.
InventorsLawrence Der, George Tyson Tuttle, Alessandro Piovaccari, Chunyu Xin, Scott Haban, Javier Elenes, Dan Kasha, Peter Vancorenland
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Abstract
A transceiver includes a processor and an analog-to-digital converter. The processor is adapted to in a transmit mode of the transceiver, generate a modulated signal in response to a first digital signal. In a receive mode of the transceiver, the processor is adapted to generate a demodulated signal in response to a second digital signal. The analog-to-digital converter provides the first digital signal in the transmit mode and provides the second digital signal in the receive mode.
Claims16
A transceiver comprising:
- a processor adapted to:
- in a transmit mode of the transceiver, generate a modulated signal in response to a first digital signal;
- and
- in a receive mode of the transceiver, generate a demodulated signal in response to a second digital signal;
- and
- at least one of the following:
- an analog-to-digital converter to provide the first digital signal in the transmit mode and provide the second digital signal in the receive mode;
- and
- a digital-to-analog converter to convert the digital modulated signal into an analog modulated signal in the transmit mode and convert the digital demodulated signal into an analog demodulated signal in response to the receive mode.
An analog-to-digital converter comprising:
- a first delta sigma modulator comprising a first filter network;
- a second delta sigma modulator comprising a second filter network;
- and
- a circuit to control a cross-coupling between the first filter network and the second filter network to regulate whether the analog-to-digital converter processes independent real signals or quadrature signals.
A method comprising:
- using at least one of an analog-to-digital converter of a transceiver and a digital-to-analog converter of the transceiver to process signals in both transmit and receive modes of the transceiver,
- wherein the act of using comprises:
- processing quadrature signals in the receive mode of the transceiver;
- and
- processing non-quadrature signals in the transmit mode of the transceiver.
A method comprising:
- using at least one of an analog-to-digital converter of a transceiver and a digital-to-analog converter of the transceiver to process signals in both transmit and receive modes of the transceiver;
- and
- adapting a frequency response of the analog-to-digital converter based on whether the transceiver is in the transmit mode or the receive mode.
Dependencies are inferred from the claim text.