Patent US7031668B2 successfully refreshed from Google Patents.
US7031668B2
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US
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Adaptive radio transceiver with a local oscillator
Assignee: Avago Technologies International Sales Pte Ltd
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Filing: 2002-06-07
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Granted: 2006-04-18
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Expires: 2022-06-07
Abstract
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.
Inventors
- 👤 Hooman Darabi
- 👤 Ahmadreza Rofougaran
- 👤 Maryam Rofougaran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:05
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H03; H03B; H03B21/00; H03B21/01; H03B27/00; H03H; H03H11/00; H03H11/02; H03H11/04; H03H11/12; H03H11/1291; H03H21/00; H03H21/0001; H03H21/0012; H04B1/06; H04B1/16; H04B1/30; H04B17/00; H04B17/10; H04B17/101; H04B17/104; H04B17/11; H04B17/14; H04B17/15; H04B17/19; H03H2011/0494; H03J; H03J2200/00; H03J2200/10
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
82 words
A transceiver, comprising: a local oscillator comprising: a quadrature oscillator that generates a first signal having a first frequency, a quadrature frequency divider that generates a second signal from the first signal, the second signal having a second frequency, and a first quadrature mixer that mixes the first signal and the second signal and produces a third signal having a third frequency; and a transmitter having a second quadrature mixer, the second quadrature mixer mixing the third signal with a fourth signal.
Claim 2
Dependent Claim
82 words
A transceiver, comprising: a local oscillator comprising: a quadrature oscillator that generates a first signal having a first frequency, a quadrature frequency divider that generates a second signal from the first signal, the second signal having a second frequency, and a first quadrature mixer that mixes the first signal and the second signal and produces a third signal having a third frequency; and a transmitter having a second quadrature mixer, the second quadrature mixer mixing the third signal with a fourth signal.
Claim 3
Dependent Claim
79 words
A transceiver, comprising: a local oscillator comprising: an oscillator configured to generate a first signal having a first frequency, a frequency divider configured to generate a second signal from the first signal, the second signal having a second frequency, and a first mixer configured to mix the first signal and the second signal to produce a third signal having a third frequency, and a transmitter having a second mixer configured to mix the third signal and a fourth signal.
Claim 4
Dependent Claim
79 words
A transceiver, comprising: a local oscillator comprising: an oscillator configured to generate a first signal having a first frequency, a frequency divider configured to generate a second signal from the first signal, the second signal having a second frequency, and a first mixer configured to mix the first signal and the second signal to produce a third signal having a third frequency, and a transmitter having a second mixer configured to mix the third signal and a fourth signal.
Claim 5
Dependent Claim
23 words
The transceiver according to claim 2 , wherein the oscillator, the frequency divider, the first mixer and the second mixer are each quadrature.
Claim 6
Dependent Claim
22 words
The transceiver according to claim 2 , wherein the third frequency comprises a sum of the first frequency and the second frequency.
Claim 7
Dependent Claim
15 words
The transceiver according to claim 2 , wherein the oscillator comprises a voltage controlled oscillator.
Claim 8
Dependent Claim
32 words
The transceiver according to claim 5 , wherein the local oscillator comprises a phase locked loop configured to control the first frequency of the first signal generated by the voltage controlled oscillator.
Claim 9
Dependent Claim
48 words
The transceiver according to claim 6 , wherein the local oscillator comprises a second oscillator and a second frequency divider, wherein the second frequency divider is coupled to the second oscillator, and wherein the voltage controlled oscillator is phase locked to an output of the second frequency divider.
Claim 10
Dependent Claim
17 words
The transceiver according to claim 7 , wherein the second frequency divider comprises a programmable divisor input.
Claim 11
Dependent Claim
74 words
The transceiver according to claim 8 , further comprising: a receiver having a third mixer configured to mix the third signal and a fifth signal with a first control signal applied to the programmable divisor input, wherein the third signal and the fourth signal are mixed by the second mixer with a second control signal applied to the programmable divisor input, and wherein the second control signal is different from the first control signal.
Claim 12
Dependent Claim
15 words
The transceiver according to claim 2 , wherein the fourth signal comprises a baseband signal.
Claim 13
Dependent Claim
13 words
The transceiver according to claim 2 , wherein the frequency divider is programmable.
Claim 14
Independent Claim
63 words
A method of communications, comprising: generating, by an oscillator, a first signal having a first frequency; generating, by a frequency divider, a second signal having a second frequency, the second signal being generated from the first signal; mixing the first signal and the second signal to produce a third signal having a third frequency; and mixing the third signal and a fourth signal.
Claim 15
Independent Claim
63 words
A method of communications, comprising: generating, by an oscillator, a first signal having a first frequency; generating, by a frequency divider, a second signal having a second frequency, the second signal being generated from the first signal; mixing the first signal and the second signal to produce a third signal having a third frequency; and mixing the third signal and a fourth signal.
Claim 16
Dependent Claim
24 words
The method according to claim 12 , wherein the mixing of the first signal and the second signal is performed by a first mixer.
Claim 17
Dependent Claim
26 words
The method according to claim 13 , wherein the oscillator, the frequency divider and the first mixer are part of a local oscillator of a transceiver.
Claim 18
Dependent Claim
15 words
The method according to claim 14 , wherein the oscillator comprises a voltage controlled oscillator.
Claim 19
Dependent Claim
31 words
The method according to claim 15 , wherein the local oscillator comprises a phase locked loop that controls the first frequency of the first signal generated by the voltage controlled oscillator.
Claim 20
Dependent Claim
48 words
The method according to claim 16 , wherein the local oscillator comprises a second oscillator and a second frequency divider, wherein the second frequency divider is coupled to the second oscillator, and wherein the voltage controlled oscillator is phase locked to an output of the second frequency divider.
Claim 21
Dependent Claim
17 words
The method according to claim 17 , wherein the second frequency divider comprises a programmable divisor input.
Claim 22
Dependent Claim
73 words
The method according to claim 18 , further comprising: mixing, by a third mixer of a receiver, the third signal and a fifth signal; applying a first control signal to the programmable divisor input and applying a second control signal to the programmable divisor input, the second control signal being different from the first control signal, wherein the mixing of the third signal and the fourth signal is performed by a second mixer.
Claim 23
Dependent Claim
24 words
The method according to claim 13 , wherein the mixing of the third signal and a fourth signal is performed by a second mixer.
Claim 24
Dependent Claim
19 words
The method according to claim 20 , wherein the second mixer is part of a transmitter of a transceiver.
Claim 25
Dependent Claim
23 words
The method according to claim 21 , wherein the oscillator, the frequency divider, the first mixer and the second mixer are each quadrature.
Claim 26
Dependent Claim
22 words
The method according to claim 12 , wherein the third frequency comprises a sum of the first signal and the second signal.
Claim 27
Dependent Claim
15 words
The method according to claim 12 , wherein the fourth signal comprises a baseband signal.
Claim 28
Dependent Claim
13 words
The method according to claim 12 , wherein the frequency divider is programmable.
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