Adaptive radio transceiver with offset PLL with subsampling mixers
First Claim
1. A transmitter in an RF transceiver, comprising:
- a complex mixer;
a filter operatively coupled to the complex mixer; and
a CMOS phase lock loop operatively coupled to the filter, the CMOS phase lock loop comprising;
a tunable oscillator including a tuning input and an oscillator output, the oscillator output being tunable as a function of the tuning input,a subsampling mixer operatively coupled to the tunable oscillator of the CMOS phase lock loop and to a local oscillator of the RF transceiver, anda phase detector including a first input, a second input and an output, the first input being operatively coupled to the subsampling mixer, the second input being operatively coupled to the filter, the output being operatively coupled to the tuning input.
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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.
93 Citations
20 Claims
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1. A transmitter in an RF transceiver, comprising:
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a complex mixer; a filter operatively coupled to the complex mixer; and a CMOS phase lock loop operatively coupled to the filter, the CMOS phase lock loop comprising; a tunable oscillator including a tuning input and an oscillator output, the oscillator output being tunable as a function of the tuning input, a subsampling mixer operatively coupled to the tunable oscillator of the CMOS phase lock loop and to a local oscillator of the RF transceiver, and a phase detector including a first input, a second input and an output, the first input being operatively coupled to the subsampling mixer, the second input being operatively coupled to the filter, the output being operatively coupled to the tuning input. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. An integrated circuit chip in an RF transceiver, comprising:
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a complex mixer receiving baseband signals; an on-chip voltage controlled oscillator; and a CMOS phase lock loop operatively coupled to the complex mixer, the CMOS phase lock loop comprising; a tunable oscillator including a tuning input and an oscillator output, the oscillator output being tunable as a function of the tuning input, a subsampling mixer operatively coupled to the tunable oscillator of the CMOS phase lock loop and to the on-chip voltage controlled oscillator, and a phase detector including a first input, a second input and an output, the first input being operatively coupled to the complex mixer, the second input being operatively coupled to the subsampling mixer, the output being operatively coupled to the tuning input.
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19. An integrated circuit transmitter in an RF transceiver, comprising:
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a complex mixer that receives quadrature baseband signals; and a phase lock loop operatively coupled to the complex mixer and adapted to provide out-of-band filtering, the phase lock loop comprising; a tunable oscillator including a tuning input and an oscillator output, the oscillator output being tunable as a function of the tuning input, a subsampling mixer operatively coupled to the tunable oscillator of the phase lock loop and to a local oscillator of the RF transceiver, and a phase detector including a first input, a second input and an output, the first input being operatively coupled to the complex mixer, the second input being adapted to receive mixed signals from the subsampling mixer, the output being operatively coupled to the tuning input. - View Dependent Claims (20)
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Specification