Adaptive radio transceiver
First Claim
1. A complementary metal oxide semiconductor (CMOS) transmitter system, comprising:
- first oscillator means for generating a first signal having a tunable frequency, the first oscillating means comprising tuning means for tuning the frequency of the first signal;
mixer means for mixing the first signal with a second signal to produce a mixed signal;
detector means for detecting a phase difference between the mixed signal and an input signal, and generating an error signal which is a function of the phase difference, the tuning means being responsive to the error signal; and
second oscillator means for generating the second signal.
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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
150 Claims
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1. A complementary metal oxide semiconductor (CMOS) transmitter system, comprising:
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first oscillator means for generating a first signal having a tunable frequency, the first oscillating means comprising tuning means for tuning the frequency of the first signal; mixer means for mixing the first signal with a second signal to produce a mixed signal; detector means for detecting a phase difference between the mixed signal and an input signal, and generating an error signal which is a function of the phase difference, the tuning means being responsive to the error signal; and second oscillator means for generating 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)
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23. A transmitter system, comprising:
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first oscillator means for generating a first signal having a tunable frequency, the first oscillating means comprising tuning means for tuning the frequency of the first signal; mixer means for mixing the first signal with a second signal to produce a mixed signal; filter means for filtering the mixed signal to generate a difference signal between the frequency of the first signal and a harmonic of the second signal; and detector means for detecting a phase difference between the filtered mixed signal and an input signal, and generating an error signal which is a function of the phase difference, the tuning means being responsive to the error signal; and second oscillator means for generating the second signal. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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44. A spread spectrum wireless communications device, comprising:
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an integrated circuit that employs complementary metal oxide semiconductor (CMOS) technology, the integrated circuit comprising a local oscillator and a transmitter, wherein the transmitter comprises a tunable oscillator, a mixer and a phase detector, wherein the tunable oscillator comprises a tuning input, wherein the mixer comprises a first input, a second input and an output, the first input of the mixer being operatively coupled to the tunable oscillator, wherein the phase detector comprises a first input, a second input and an output, the first input of the phase detector being operatively coupled to the output of the mixer, the output of the phase detector being operatively coupled to the tuning input, and wherein the local oscillator is operatively coupled to the second input of the mixer. - View Dependent Claims (45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77)
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78. A complementary metal oxide semiconductor (CMOS) integrated circuit, comprising:
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a transmitter comprising a tunable oscillator having a tuning input, a mixer having a first input coupled the tunable oscillator, a second input, and an output, and a phase detector having a first input coupled to the mixer output, a second input, and an output coupled to the tuning input; and a local oscillator coupled to the second input of the mixer. - View Dependent Claims (79, 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115)
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116. A transmission system, comprising:
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a transmitter comprising a tunable oscillator having a tuning input, a subsampling mixer having a first input coupled the tunable oscillator, a second input, and an output, and a phase detector having a first input coupled to the mixer output, a second input, and an output coupled to the tuning input; and a local oscillator coupled to the second input of the mixer. - View Dependent Claims (117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 127, 128, 129, 130, 131, 132, 133, 134)
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135. A spread spectrum wireless communications transceiver on a single integrated circuit chip that employs complementary metal oxide semiconductor (CMOS) technology, comprising:
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a local oscillator; a tunable oscillator; a mixer; and a phase detector, wherein the tunable oscillator comprises a tuning input, wherein the mixer comprises a first input, a second input and an output, the first input of the mixer being operatively coupled to the tunable oscillator, wherein the phase detector comprises a first input, a second input and an output, the first input of the phase detector being operatively coupled to the output of the mixer, the output of the phase detector being operatively coupled to the tuning input, and wherein the local oscillator is operatively coupled to the second input of the mixer. - View Dependent Claims (136, 137, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150)
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Specification