INTEGRATED RECEIVER AND INTEGRATED CIRCUIT HAVING INTEGRATED INDUCTORS AND METHOD THEREFOR
First Claim
1. An integrated receiver comprising:
- a tracking bandpass filter having an input for receiving a radio frequency (RF) input signal, and an output, and comprising a variable capacitor having a capacitance that varies in response to a bandpass frequency control signal, in parallel with an integrated inductor;
said integrated inductor comprising a plurality of windings formed in a plurality of metal layers;
a tunable lowpass filter having an input coupled to said output of said tracking bandpass filter, and an output and having a tuning input for receiving a cutoff frequency signal; and
a mixer having a signal input coupled to said output of said tunable lowpass filter, a local oscillator input for receiving a local oscillator signal, and a signal output for providing a converted RF signal,wherein said tracking bandpass filter, said integrated inductor, said tunable lowpass filter, and said mixer are formed on a single integrated circuit chip.
1 Assignment
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Accused Products
Abstract
In one form, an integrated receiver includes a tracking bandpass filter, a tunable lowpass filter, and a mixer formed on a single integrated circuit chip. The tracking bandpass filter has an input for receiving a radio frequency (RF) input signal, and an output, and comprises a variable capacitor having a capacitance that varies in response to a bandpass frequency control signal, in parallel with an integrated inductor. The integrated inductor comprises a plurality of windings formed in a plurality of metal layers. The tunable lowpass filter has an input coupled to the output of the tracking bandpass filter, and an output and having a tuning input for receiving a cutoff frequency signal. The mixer has a signal input coupled to the output of the tunable lowpass filter, a local oscillator input for receiving a local oscillator signal, and a signal output for providing a converted RF signal.
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Citations
20 Claims
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1. An integrated receiver comprising:
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a tracking bandpass filter having an input for receiving a radio frequency (RF) input signal, and an output, and comprising a variable capacitor having a capacitance that varies in response to a bandpass frequency control signal, in parallel with an integrated inductor; said integrated inductor comprising a plurality of windings formed in a plurality of metal layers; a tunable lowpass filter having an input coupled to said output of said tracking bandpass filter, and an output and having a tuning input for receiving a cutoff frequency signal; and a mixer having a signal input coupled to said output of said tunable lowpass filter, a local oscillator input for receiving a local oscillator signal, and a signal output for providing a converted RF signal, wherein said tracking bandpass filter, said integrated inductor, said tunable lowpass filter, and said mixer are formed on a single integrated circuit chip. - View Dependent Claims (2, 3, 4, 5)
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6. An integrated receiver comprising:
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a plurality of signal processing paths, wherein each of said plurality of signal processing paths comprises; a tracking bandpass filter having an input for receiving a radio frequency (RF) input signal, and an output, and comprising a variable capacitor having a capacitance that varies in response to a bandpass frequency control signal, in parallel with an integrated inductor; said integrated inductor comprising a plurality of windings formed in a plurality of metal layers; and a mixer having a signal input coupled to said output of said tracking bandpass filter, a local oscillator input for receiving a local oscillator signal, and a signal output for providing a converted RF signal, wherein said plurality of signal processing paths are formed on a single integrated circuit chip. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14)
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15. A method comprising:
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forming a first integrated inductor on an integrated circuit in a first plurality of metal layers; receiving a radio frequency (RF) signal; filtering said RF signal around a desired frequency using said first integrated inductor to provide a tuned RF signal; and mixing said tuned RF signal to an intermediate frequency. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification