US6072996A
Expired / Lapsed
US
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Dual band radio receiver
Assignee: Intel Corp
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Filing: 1997-03-28
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Granted: 2000-06-06
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Expires: 2017-03-28
Abstract
Abstract A dual band radio receiver is provided. The dual band radio receiver includes a local oscillator configured to generate a local oscillator (LO) signal. The dual band radio receiver also includes first and second mixer devices. The first mixer device is configured to receive the LO signal and an RF signal included within a first band. Responsive to these signals, the first mixer device outputs a first IF signal. The second mixer device is configured to receive the LO signal and a second RF signal included within a second band. In response to these signals the second mixer device outputs a second IF signal. The local oscillator is configured to operate within a third band located between the first and second bands.
Inventors
- 👤 James P. Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:46
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/005; H04B1/06; H04B1/16; H04B1/26; H04B1/38; H04B1/40; H04B1/403; H04B1/406
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
169 words
A dual band radio receiver comprising: a local oscillator configured to generate a Local Oscillator (LO) signal; a first two way switching device responsive to a base band controller for switching between a first Radio Frequency (RF) signal and a second RF signal, said first two way switching device coupled to a first front end receiver and a second front end receiver; a first mixer device configured to receive said LO signal and said first RF signal included within a first band and responsively to output a first Intermediate Frequency (IF) signal; a second mixer device configured to receive said LO signal and said second RF signal included within a second band and responsively to output a second IF signal; a second two way switching device responsive to said base band controller for switching between said first and second IF signals; and wherein said local oscillator is configured to operate within a third band located between said first and second bands and is responsive to said base band controller.
Claim 2
Dependent Claim
169 words
A dual band radio receiver comprising: a local oscillator configured to generate a Local Oscillator (LO) signal; a first two way switching device responsive to a base band controller for switching between a first Radio Frequency (RF) signal and a second RF signal, said first two way switching device coupled to a first front end receiver and a second front end receiver; a first mixer device configured to receive said LO signal and said first RF signal included within a first band and responsively to output a first Intermediate Frequency (IF) signal; a second mixer device configured to receive said LO signal and said second RF signal included within a second band and responsively to output a second IF signal; a second two way switching device responsive to said base band controller for switching between said first and second IF signals; and wherein said local oscillator is configured to operate within a third band located between said first and second bands and is responsive to said base band controller.
Claim 3
Dependent Claim
31 words
The dual band radio receiver of claim 1 further comprising first and second IF filters coupled between said first and second mixer devices and said second two way switching device, respectively.
Claim 4
Dependent Claim
24 words
The dual band radio receiver of claim 1 wherein said first band is within a frequency range of approximately 1.910 GHz and 1.930 GHz.
Claim 5
Dependent Claim
23 words
The dual band radio receiver of claim 1 wherein said second band is within a frequency range of approximately 2.40 and 2.4835 GHz.
Claim 6
Dependent Claim
20 words
The dual band radio receiver of claim 1 wherein said third band is between approximately 2.155 GHz and 2.2385 GHz.
Claim 7
Dependent Claim
22 words
The dual band radio receiver of claim 1 wherein said third band is positioned approximately half-way between said first and second bands.
Claim 8
Independent Claim
180 words
A system comprising: a transmitter circuit; and a dual band radio receiver coupled to said transmitter, said dual band radio receiver including a local oscillator configured to generate an LO signal, a first two way switching device responsive to a base band controller for switching between a first Radio Frequency (RF) signal and a second RF signal, the first two way switching device coupled to a first front end receiver and a second front end receiver, a first mixer device configured to receive said LO signal and said first RF signal included within a first band and responsively to output a first IF signal, a second mixer device configured to receive said LO signal and said second RF signal included within a second band and responsively to output a second IF signal, a second two way switching device responsive to said base band controller for switching between said first and second IF signals, and wherein said local oscillator is configured to operate within a third band positioned between said first and second bands and responsive to said base band controller.
Claim 9
Independent Claim
180 words
A system comprising: a transmitter circuit; and a dual band radio receiver coupled to said transmitter, said dual band radio receiver including a local oscillator configured to generate an LO signal, a first two way switching device responsive to a base band controller for switching between a first Radio Frequency (RF) signal and a second RF signal, the first two way switching device coupled to a first front end receiver and a second front end receiver, a first mixer device configured to receive said LO signal and said first RF signal included within a first band and responsively to output a first IF signal, a second mixer device configured to receive said LO signal and said second RF signal included within a second band and responsively to output a second IF signal, a second two way switching device responsive to said base band controller for switching between said first and second IF signals, and wherein said local oscillator is configured to operate within a third band positioned between said first and second bands and responsive to said base band controller.
Claim 10
Dependent Claim
28 words
The system of claim 7 further comprising first and second IF filters coupled between said first and second mixer devices and said second two way switching device, respectively.
Claim 11
Dependent Claim
21 words
The system of claim 7 wherein said first band is within a frequency range of approximately 1.910 GHz and 1.930 GHz.
Claim 12
Dependent Claim
20 words
The system of claim 7 wherein said second band is within a frequency range of approximately 2.40 and 2.4835 GHz.
Claim 13
Dependent Claim
17 words
The system of claim 7 wherein said third band is between approximately 2.155 GHz and 2.2385 GHz.
Claim 14
Dependent Claim
19 words
The system of claim 7 wherein said third band is positioned approximately half-way between said first and second bands.
Claim 15
Dependent Claim
97 words
In a dual-band radio receiver configured to receive Radio Frequency (RF) signals within first and second bands, a method for converting an RF signal into an IF signal, the method comprising the steps of: a) determining whether said RF signal belongs to one of a first and a second bands; and b) if said RF signal belongs to one of said first and second bands, generating said IF signal in response to a base band controller by mixing said RF signal with a LO signal belonging to a third band located between said first and second bands.
Claim 16
Dependent Claim
97 words
In a dual-band radio receiver configured to receive Radio Frequency (RF) signals within first and second bands, a method for converting an RF signal into an IF signal, the method comprising the steps of: a) determining whether said RF signal belongs to one of a first and a second bands; and b) if said RF signal belongs to one of said first and second bands, generating said IF signal in response to a base band controller by mixing said RF signal with a LO signal belonging to a third band located between said first and second bands.
Claim 17
Dependent Claim
35 words
The method of claim 13 wherein said step b) includes the step of: if said RF signal belongs to said first band, driving said RF signal and said LO signal to a first mixer device.
Claim 18
Dependent Claim
35 words
The method of claim 13 wherein said step b) includes the step of, if said RF signal belongs to said second band, driving said RF signal and said LO signal to a second mixer device.
Claim 19
Dependent Claim
18 words
The method of claim 13 wherein said third level is substantially half-way between said first and second bands.
Claim 20
Dependent Claim
20 words
The method of claim 13, wherein said first band is within a frequency range of approximately 1.910 and 1.930 GHz.
Claim 21
Dependent Claim
19 words
The method of claim 13 wherein said second band is within a frequency range of approximately 2.40 and 2.4835.
Claim 22
Independent Claim
157 words
A method for providing a dual band radio receiver comprising: providing first and second front end receivers; providing first and second mixers wherein the first mixer is coupled to the first front end receiver and the second mixer is coupled to the second front end receiver; providing a base band controller; providing a circuit configured to determine whether an RF signal belongs to one of a first and second bands, said circuit coupling said RF signal to one of said first and second front end receivers if said circuit determines that the RF signal belongs to one of a first and second bands respectively and is responsive to said base band controller; and coupling a local oscillator to said first and second mixers, said local oscillator configured to generate signals within a third band that is positioned approximately mid-way between said first and second bands and wherein said local oscillator is responsive to said base band controller.
Claim 23
Independent Claim
157 words
A method for providing a dual band radio receiver comprising: providing first and second front end receivers; providing first and second mixers wherein the first mixer is coupled to the first front end receiver and the second mixer is coupled to the second front end receiver; providing a base band controller; providing a circuit configured to determine whether an RF signal belongs to one of a first and second bands, said circuit coupling said RF signal to one of said first and second front end receivers if said circuit determines that the RF signal belongs to one of a first and second bands respectively and is responsive to said base band controller; and coupling a local oscillator to said first and second mixers, said local oscillator configured to generate signals within a third band that is positioned approximately mid-way between said first and second bands and wherein said local oscillator is responsive to said base band controller.
References Cited (Backward Citations)
US5475391A
Cited
US5200826A
Cited
US5444865A
Cited
US5309479A
Cited
US5291516A
Cited
US5694414A
Cited
US5437051A
Cited
US5528633A
Cited
US5311149A
Cited
US5446422A
Cited
US5392460A
Cited
US5493210A
Cited
US5564076A
Cited
US5406615A
Cited
US5386438A
Cited
US5493716A
Cited
US5668836A
Cited
US5475677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-06-06 | 2003-12-06 | 2004-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-06-06 | 2007-12-06 | 2008-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-06-06 | 2011-12-06 | 2012-06-06 | $7700.00 | Window Closed / Lapsed |