Patent US6906996B2 successfully refreshed from Google Patents.
US6906996B2
Expired / Lapsed
US
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Multiple modulation wireless transmitter
Assignee: Qualcomm Inc
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Filing: 2002-05-20
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Granted: 2005-06-14
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Expires: 2022-05-20
Abstract
Abstract A dual modulation transmitter apparatus ( 100 ) includes first ( 134 ), second ( 136 ), and third ( 132 ) signal paths. The first signal path includes a polar modulator ( 120 ) coupled to a data input ( 115 ). The second signal path includes a quadrature modulator ( 122 ) coupled to the data input. The third signal path is coupled to an antenna ( 142 ) and includes a switch ( 128 ) configured to couple the third signal path to the first signal path under a first condition and to couple the third signal path to the second signal path under a second condition. Thus, the transmitter apparatus enjoys the best of both worlds, since it utilizes quadrature or polar modulation in the most appropriate circumstances.
Inventors
- 👤 Gary John Ballantyne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:19
CPC Classifications
H; H04; H04L; H04L27/00; H04L27/0008; H04B; H04B1/00; H04B1/66; H04L1/00; H04L1/0001; H04L1/0002; H04L1/0003; H04W; H04W52/00; H04W52/04; H04W52/18; H04W52/24; H04W52/241; H04J; H04J13/00; Y; Y02; Y02D; Y02D30/00; Y02D30/50
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
79 words
A dual modulation transmitter apparatus, comprising: a first signal path including a polar carrier modulator coupled to a data input; a second signal path including a quadrature carrier modulator coupled to the data input; a third signal path coupled to an antenna and including a switch configured to couple the third signal path to the first signal path under a first condition and alternatively to couple the third signal path to the second signal path under a second condition.
Claim 2
Dependent Claim
79 words
A dual modulation transmitter apparatus, comprising: a first signal path including a polar carrier modulator coupled to a data input; a second signal path including a quadrature carrier modulator coupled to the data input; a third signal path coupled to an antenna and including a switch configured to couple the third signal path to the first signal path under a first condition and alternatively to couple the third signal path to the second signal path under a second condition.
Claim 3
Dependent Claim
58 words
The apparatus of claim 1 , further comprising a controller coupled to the switch, where the controller is configured to set the switch to couple the third signal path to the first signal path under the first condition and to set the switch to couple the third signal path to the second signal path under the second condition.
Claim 4
Dependent Claim
36 words
The apparatus of claim 1 , where the switch is configured such that the first condition comprises transmit power level satisfying predetermined criteria, and the second condition comprises transmit power level not satisfying the predetermined criteria.
Claim 5
Dependent Claim
40 words
The apparatus of claim 3 , where transmit power comprises one of the following: measured transmit power of the antenna; a level of transmit power selected by a transmit power selector module for use in transmitting signals via the antenna.
Claim 6
Dependent Claim
16 words
The apparatus of claim 3 , the predetermined criteria comprising transmit power exceeding a prescribed threshold.
Claim 7
Dependent Claim
49 words
The apparatus of claim 3 , the predetermined criteria comprising transmit power exceeding a prescribed first threshold, the predetermined criteria additionally being satisfied by the transmit power decreasing from levels greater than the first threshold to levels less than the first threshold but still exceeding a prescribed second threshold.
Claim 8
Dependent Claim
47 words
The apparatus of claim 1 , where the switch is configured such that the first condition comprises the antenna receiving designated signals having signal strength satisfying a predetermined criteria, and the second condition comprises the designated signals having signal strength that does not satisfy the predetermined criteria.
Claim 9
Dependent Claim
52 words
The apparatus of claim 7 , the predetermined criteria comprising signal strength being less than a first prescribed threshold, the predetermined criteria additionally being satisfied by the signal strength increasing from levels less than the first threshold to levels greater than the first threshold but still not exceeding a prescribed second threshold.
Claim 10
Dependent Claim
43 words
The apparatus of claim 1 , where the data input comprises output of a fourth signal path including a digital signal encoder, and the switch is configured such that the first and second conditions comprise different encoding schemes being used by the encoder.
Claim 11
Dependent Claim
93 words
The apparatus of claim 1 , where: the data input comprises output of a fourth signal path including a digital signal encoder; the switch is configured such that the first condition comprises any one of the following (a) the encoder using a frequency modulation (FM) scheme, or (b) the encoder utilizing a code division multiple access (CDMA) encoding scheme and transmit power level satisfying a predetermined criteria; the switch is configured such that the second condition comprises the encoder utilizing the CDMA encoding scheme and transmit power level not satisfying the predetermined criteria.
Claim 12
Dependent Claim
122 words
A dual modulation transmitter apparatus configured to transmit at various power levels responsive to various conditions, comprising: a first signal path including a polar carrier modulator coupled to a data input; a second signal path including a quadrature carrier modulator coupled to the data input; a third signal path coupled to an antenna and including a switch configured to couple the third signal path to the first signal path responsive to conditions for which the transmitter apparatus is configured to transmit at power levels that satisfy predetermined criteria and to couple the third signal path to the second signal path responsive to conditions for which the transmitter apparatus is configured to transmit at power levels that do not satisfy the predetermined criteria.
Claim 13
Dependent Claim
122 words
A dual modulation transmitter apparatus configured to transmit at various power levels responsive to various conditions, comprising: a first signal path including a polar carrier modulator coupled to a data input; a second signal path including a quadrature carrier modulator coupled to the data input; a third signal path coupled to an antenna and including a switch configured to couple the third signal path to the first signal path responsive to conditions for which the transmitter apparatus is configured to transmit at power levels that satisfy predetermined criteria and to couple the third signal path to the second signal path responsive to conditions for which the transmitter apparatus is configured to transmit at power levels that do not satisfy the predetermined criteria.
Claim 14
Dependent Claim
83 words
A dual modulation transmitter apparatus, comprising: a first signal path including means for polar carrier modulation of signals arriving at a data input; a second signal path including means for quadrature carrier modulation of signals arriving at the data input; a third signal path coupled to an antenna and including switching means for coupling the third signal path to the first signal path under a first condition and alternatively coupling the third signal path to the second signal path under a second condition.
Claim 15
Dependent Claim
83 words
A dual modulation transmitter apparatus, comprising: a first signal path including means for polar carrier modulation of signals arriving at a data input; a second signal path including means for quadrature carrier modulation of signals arriving at the data input; a third signal path coupled to an antenna and including switching means for coupling the third signal path to the first signal path under a first condition and alternatively coupling the third signal path to the second signal path under a second condition.
Claim 16
Independent Claim
56 words
A method for operating a transmitter to perform dual mode modulation of a carrier with a data signal, comprising operations of: if a first condition exists, modulating the carrier with a data signal by applying polar modulation; alternatively, in the absence of the first condition, modulating the carrier with a data signal by applying quadrature modulation.
Claim 17
Independent Claim
56 words
A method for operating a transmitter to perform dual mode modulation of a carrier with a data signal, comprising operations of: if a first condition exists, modulating the carrier with a data signal by applying polar modulation; alternatively, in the absence of the first condition, modulating the carrier with a data signal by applying quadrature modulation.
Claim 18
Dependent Claim
30 words
The method of claim 13 , where the first condition comprises transmit power level satisfying predetermined criteria, and the second condition comprises transmit power level not satisfying the predetermined criteria.
Claim 19
Dependent Claim
40 words
The method of claim 14 , where transmit power comprises one of the following: measured transmit power of the antenna; a level of transmit power selected by a transmit power selector module for use in transmitting signals via the antenna.
Claim 20
Dependent Claim
16 words
The method of claim 13 , the predetermined criteria comprising transmit power exceeding a prescribed threshold.
Claim 21
Dependent Claim
48 words
The method of claim 13 , the predetermined criteria comprising transmit power exceeding a prescribed first threshold, the predetermined criteria additionally being satisfied by transmit power decreasing from levels greater than the first threshold to levels less than the first threshold but still exceeding a prescribed second threshold.
Claim 22
Dependent Claim
53 words
The method of claim 13 , where the transmitter and a receiver are exchanging signals with a remote station, and the first condition comprises the receiver receiving designated signals having signal strength satisfying predetermined criteria, and the second condition comprises the designated signals having signal strength that does not satisfy the predetermined criteria.
Claim 23
Dependent Claim
55 words
The apparatus of claim 18 , the predetermined criteria comprising signal strength being less than a prescribed first threshold, the first criteria additionally being satisfied by the signal strength increasing from levels less than the first threshold to levels that are greater than the first threshold but still do not exceed a prescribed second threshold.
Claim 24
Dependent Claim
32 words
The method of claim 13 , where the first condition comprises the data signal having a first encoding type and the second condition comprises the data signal having a second encoding type.
Claim 25
Dependent Claim
72 words
The method of claim 13 , where: the first condition comprises any one of the following (a) the data signal being encoded with a frequency modulation (FM) scheme, or (b) the data signal being encoded with a code division multiple access (CDMA) encoding scheme and transmit power level satisfying a predetermined criteria; the second condition comprises the encoder utilizing the CDMA encoding scheme and transmit power level not satisfying the predetermined criteria.
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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) | 2008-06-13 | 2008-12-13 | 2009-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2012-06-13 | 2012-12-13 | 2013-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2016-06-13 | 2016-12-13 | 2017-06-14 | $7700.00 | Window Closed / Lapsed |