Adaptive radio transceiver with subsampling mixers
First Claim
1. A mixer, comprising:
- a track and hold circuit to track and hold a first signal in response to a second signal; and
a bandpass circuit in cooperation with the track and hold circuit,wherein the track and hold circuit comprises a switch in a path of the first signal, the switch being controlled by the second signal.
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Accused Products
Abstract
An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.
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Citations
142 Claims
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1. A mixer, comprising:
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a track and hold circuit to track and hold a first signal in response to a second signal; and a bandpass circuit in cooperation with the track and hold circuit, wherein the track and hold circuit comprises a switch in a path of the first signal, the switch being controlled by the second signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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36. A mixer, comprising:
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a track and hold circuit to track and hold a first signal in response to a second signal; and a bandpass circuit in cooperation with the track and hold circuit, wherein the track and hold circuit and the bandpass circuit each comprises a differential circuit, the first and second signals each being differential signals, and wherein the track and hold circuit further comprises a first switch in a first path of a first one of the first differential signals and a second switch in a second path of the first one of the first differential signals, the first switch being controlled by a first one of the second differential signals and the second switch being controlled by a second one of the second differential signals. - View Dependent Claims (37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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56. A mixer, comprising:
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a track and hold circuit to track and hold a first signal in response to a second signal; and a bandpass circuit in cooperation with the track and hold circuit, wherein the track and hold circuit and the bandpass circuit each comprises a differential circuit, the first and second signals each being differential signals, wherein the track and hold circuit comprises a first transistor having a first input adapted to be coupled to a first one of the first differential signals and a first output to generate a first output signal in response to the first one of the first differential signals, a second transistor having a second input adapted to be coupled to the first one of the first differential signals and a second output to generate a second output signal in response to the first one of the first differential signals, a third transistor having a third input adapted to be coupled to a second one of the first differential signals and a third output to generate a third output signal in response to the second one of the first differential signals, and a fourth transistor having a fourth input adapted to be coupled to the second one of the first differential signals and a fourth output to generate a fourth output signal in response to the second one of the first differential signals, wherein the track and the hold circuit further comprises a first switch in a path of the first output signal, a second switch in a path of the second output signal, a third switch in a path of the third output signal, and a fourth switch in a path of the fourth output signal, the first switch being controlled by a first one of the second differential signals, the second switch being controlled by a second one of the second differential signals, the third switch being controlled by the first one of the second differential signals, and the fourth switch being controlled by the second one of the second differential signals. - View Dependent Claims (57, 58, 59, 60, 61)
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62. A mixer, comprising:
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a track and hold circuit having a signal input, a control input, and a mixed signal output; and a bandpass circuit coupled to the signal input and the mixed signal output, wherein the track and hold circuit comprises a switch between the signal input and the mixed signal output, the switch being controlled by the control input. - View Dependent Claims (63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83, 84, 85, 86)
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87. A mixer, comprising:
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a track and hold circuit having a signal input, a control input, and a mixed signal output; and a bandpass circuit coupled to the signal input and the mixed signal output, wherein the track and hold circuit comprises a transistor having an input coupled to the signal input and an output coupled to the mixed signal output, and a current source coupled to the mixed signal output, the current source being controlled by the control input, and wherein the current source comprises a second transistor having a gate coupled to the control input. - View Dependent Claims (88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106)
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107. A differential mixer, comprising:
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a track and hold circuit having a differential signal input, a differential control input, and a differential mixed signal output; and a bandpass circuit coupled to the differential signal input and the differential mixed signal output, wherein the track and hold circuit further comprises a first switch between a first one of the differential inputs and a first one of the differential mixed signal outputs, and a second switch between the first one of the differential inputs and the first one of the differential mixed signal outputs, the first switch being controlled by a first one of the differential control inputs and the second switch being controlled by a second one of the differential control inputs. - View Dependent Claims (108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126)
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127. A differential mixer, comprising:
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a track and hold circuit having a differential signal input, a differential control input, and a differential mixed signal output; and a bandpass circuit coupled to the differential signal input and the differential mixed signal output, wherein the track and hold circuit comprises a first transistor having a first input coupled to a first one of the differential signal inputs and a first output, a second transistor having a second input coupled to the first one of the differential signal inputs and a second output, a third transistor having a third input coupled to a second one of the differential signal inputs, and a fourth transistor having a fourth input coupled to the second one of the differential signal inputs, wherein the track and hold circuit further comprises a first switch coupled to the first output, a second switch coupled to the second output, a third switch coupled to the third output, and a fourth switch coupled to the fourth output the first switch being controlled by a first one of the differential control inputs, the second switch being controlled by a second one of the differential control inputs, the third switch being controlled by the first one of the differential control inputs, and the fourth switch being controlled by the second one of the differential control inputs. - View Dependent Claims (128, 129, 130, 131, 132)
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133. A wireless communications device that supports wireless spread spectrum communications, comprising:
a phase locked loop that comprises a mixing circuit arrangement that comprises a track and hold circuit to track and hold a first signal in response to a second signal, and a bandpass circuit in cooperation with the track and hold circuit, wherein the track and hold circuit comprises a switch in a path of the first signal, the switch being controlled by the second signal. - View Dependent Claims (134, 135, 136, 137)
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138. A wireless communications device that supports wireless spread spectrum communications, comprising:
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a wireless transceiver that comprises a mixing circuit arrangement that comprises a track and hold circuit having a signal input, a control input, and a mixed signal output, and a bandpass circuit coupled to the signal input and the mixed signal output, wherein the track and hold circuit comprises a switch between the signal input and the mixed signal output, the switch being controlled by the control input. - View Dependent Claims (139, 140, 141, 142)
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Specification