US6643522B1
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus providing simultaneous dual mode operations for radios in the shared spectrum
Assignee: Sharp Laboratories of America Inc
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Filing: 2000-03-27
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Granted: 2003-11-04
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Expires: 2020-03-27
Abstract
Abstract A dual mode RF radio includes a first transceiver operating under a first transmitter/receiver protocol, and having a first receiver portion and a first transmitter portion therein; and a second transceiver operating under a second transmitter/receiver protocol, and having a second receiver portion and a second receiver portion therein; wherein both transmitter/receiver protocols are spread spectrum protocols; a shared antenna operatively connected to both said first transceiver and said second transceiver; and an isolation mechanism for isolating said first and second receiver portions from a transmitter portion while said transmitter portion is transmitting. A method of simultaneously operating a dual mode RF radio includes operating a first transceiver under a first transmitter/receiver protocol; operating a second transceiver under a second transmitter/receiver protocol, wherein both transmitter/receiver protocols are spread spectrum protocols; sharing an antenna between the first transceiver and the second transceiver; and isolating the receiver portions of the transceivers from the transmitter portion of the transceivers while a transmitter portion is transmitting, including providing a circulator for connecting the receiver portions and the transmitter portions to the shared antenna.
Inventors
- 👤 Song-Lin Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:52
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/005; H04B1/38; H04B1/40; H04B1/403; H04B1/406
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
113 words
A dual mode RF radio comprising: a first transceiver operating under a first transmitter/receiver protocol in an RF band, and having a first receiver portion and a first transmitter portion therein; and a second transceiver operating under a second transmitter/receiver protocol in the same RF band as the first transmitter/receiver, and having a second receiver portion and a second transmitter portion therein; wherein both transmitter/receiver protocols are time division duplex protocols having non-synchronous transmissions; a shared antenna operatively connected to both said first transceiver and said second transceiver; and an isolation mechanism for isolating said first and second receiver portions from a transmitter portion while said transmitter portion is transmitting to reduce desensitization.
Claim 2
Dependent Claim
113 words
A dual mode RF radio comprising: a first transceiver operating under a first transmitter/receiver protocol in an RF band, and having a first receiver portion and a first transmitter portion therein; and a second transceiver operating under a second transmitter/receiver protocol in the same RF band as the first transmitter/receiver, and having a second receiver portion and a second transmitter portion therein; wherein both transmitter/receiver protocols are time division duplex protocols having non-synchronous transmissions; a shared antenna operatively connected to both said first transceiver and said second transceiver; and an isolation mechanism for isolating said first and second receiver portions from a transmitter portion while said transmitter portion is transmitting to reduce desensitization.
Claim 3
Dependent Claim
55 words
The radio of claim 1 wherein said isolation mechanism includes a circulator for connecting said receivers and said transmitters to said antenna, a power splitter for splitting a received signal between said first transceiver and said second transceiver, and a power combiner for combining a transmitted signal from said first transceiver and said second transceiver.
Claim 4
Dependent Claim
42 words
The radio of claim 1 which further includes a main processor operatively connected to both transceivers and a collision avoidance mechanism for determining which of the frequencies in the spectrum will be used by each of said transceivers for a next transmission.
Claim 5
Dependent Claim
31 words
The radio of claim 3 wherein said collision avoidance mechanism includes a collision avoidance algorithm and a switching mechanism for avoiding the channel that is being used by the other transceiver.
Claim 6
Dependent Claim
148 words
A dual mode RF radio comprising: a first transceiver operating under a first transmitter/receiver protocol in an RF band, and having a first receiver portion and a first transmitter portion therein; and a second transceiver operating under a second transmitter/receiver protocol in the same RF band as the first transmitter/receiver, and having a second receiver portion and a second transmitter portion therein; wherein both transmitter/receiver protocols are time division duplex protocols having non-synchronous transmissions; a shared antenna operatively connected to both said first transceiver and said second transceiver; a main processor operatively connected to both transceivers and a collision avoidance mechanism for determining which of the frequencies in the spread spectrum will be used by each of said transceivers for a next transmission; and an isolation mechanism for isolating said first and second receiver portions from a transmitter portion while said transmitter portion is transmitting to reduce desensitization.
Claim 7
Dependent Claim
148 words
A dual mode RF radio comprising: a first transceiver operating under a first transmitter/receiver protocol in an RF band, and having a first receiver portion and a first transmitter portion therein; and a second transceiver operating under a second transmitter/receiver protocol in the same RF band as the first transmitter/receiver, and having a second receiver portion and a second transmitter portion therein; wherein both transmitter/receiver protocols are time division duplex protocols having non-synchronous transmissions; a shared antenna operatively connected to both said first transceiver and said second transceiver; a main processor operatively connected to both transceivers and a collision avoidance mechanism for determining which of the frequencies in the spread spectrum will be used by each of said transceivers for a next transmission; and an isolation mechanism for isolating said first and second receiver portions from a transmitter portion while said transmitter portion is transmitting to reduce desensitization.
Claim 8
Dependent Claim
55 words
The radio of claim 5 herein said isolation mechanism includes a circulator for connecting said receivers and said transmitters to said antenna, a power splitter for splitting a received signal between said first transceiver and said second transceiver, and a power combiner for combining a transmitted signal from said first transceiver and said second transceiver.
Claim 9
Dependent Claim
31 words
The radio of claim 5 wherein said collision avoidance mechanism includes a collision avoidance algorithm and a switching mechanism for avoiding the channel that is being used by the other transceiver.
Claim 10
Independent Claim
84 words
A method of simultaneously operating a dual mode RF radio comprising: operating a first transceiver under a first transmitter/receiver protocol in an RF band; operating a second transceiver under a second transmitter/receiver protocol in the RF band, wherein both transmitter/receiver protocols are time division duplex protocols having non-synchronous transmissions; sharing an antenna between the first transceiver and the second transceiver; and isolating the receiver portions of the transceivers from the transmitter portion of the transceivers while a transmitter portion is transmitting to reduce desensitization.
Claim 11
Independent Claim
84 words
A method of simultaneously operating a dual mode RF radio comprising: operating a first transceiver under a first transmitter/receiver protocol in an RF band; operating a second transceiver under a second transmitter/receiver protocol in the RF band, wherein both transmitter/receiver protocols are time division duplex protocols having non-synchronous transmissions; sharing an antenna between the first transceiver and the second transceiver; and isolating the receiver portions of the transceivers from the transmitter portion of the transceivers while a transmitter portion is transmitting to reduce desensitization.
Claim 12
Dependent Claim
24 words
The method of claim 8 which further includes providing a circulator for connecting the receiver portions and the transmitter portions to the shared antenna.
Claim 13
Dependent Claim
54 words
The method of claim 8 which further includes avoiding collisions on a same channel frequency between the transmitter portions of the two transceivers by determining which of the frequencies in the spectrum will be used by each of said transceivers for a next transmission and switching one of the transmitter portions to another channel.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2006-11-03 | 2007-05-05 | 2007-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-11-03 | 2011-05-05 | 2011-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-11-03 | 2015-05-05 | 2015-11-04 | $7700.00 | Window Closed / Lapsed |