US7733979B2
Active / In Force
US
⏱️ 0.4 years remaining
Average power control of wireless transmission having a variable duty cycle
Assignee: NDSSI Holdings LLC
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Filing: 2007-03-21
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Granted: 2010-06-08
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Expires: 2027-03-21
Abstract
Abstract A method an apparatus for controlling a transmission signal power level of a transmitter is disclosed. The method includes receiving a root-mean-squared target power level. A duty cycle of a transmission signal is determined that indicates power on and power off periods over a predetermined sensing interval. A transmission signal power level is sensed. The transmission signal power level is adjusted to be approximately equal to the target power level divided by the duty cycle.
Inventors
- 👤 Adam L. Schwartz
- 👤 James Christopher Arnott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:25
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/20; H03F3/24; H03F1/00; H03F1/02; H03F1/0205; H03G; H03G3/00; H03G3/20; H03G3/30; H03G3/3036; H03G3/3042; H03G3/3047; H04; H04W; H04W52/00; H04W52/04; H04W52/18; H04W52/22; H04W52/225; H04W52/28; H04W52/287; H03F2200/00; H03F2200/105; H03F2200/393; H04B; H04B1/00; H04B1/02; H04B1/04; H04B2001/0408; H04B2001/0416
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
89 words
A method of controlling a transmission signal power level of a transmitter, comprising: receiving a target power level; determining duty cycle of a transmission signal that indicates power on and power off periods over a predetermined sensing interval; sensing a transmission signal power level; adjusting the transmission signal power level to be approximately equal to the target power level divided by the duty cycle: receiving a transmission indicator that is active during transmission of signals; at least sensing the transmission signal power level while the transmission indicator is active.
Claim 2
Independent Claim
89 words
A method of controlling a transmission signal power level of a transmitter, comprising: receiving a target power level; determining duty cycle of a transmission signal that indicates power on and power off periods over a predetermined sensing interval; sensing a transmission signal power level; adjusting the transmission signal power level to be approximately equal to the target power level divided by the duty cycle: receiving a transmission indicator that is active during transmission of signals; at least sensing the transmission signal power level while the transmission indicator is active.
Claim 3
Dependent Claim
25 words
The method of claim 1 , wherein the target power level is a root-mean-squared target power level of −41.3 dBm/MHz over a 1 mS period.
Claim 4
Dependent Claim
14 words
The method of claim 1 , wherein the predetermined sensing interval is 1 mS.
Claim 5
Dependent Claim
26 words
The method of claim 1 , wherein the transmission signal power level is adjusted by an adjustable gain amplifier of a transmitter chain of the transmitter.
Claim 6
Dependent Claim
19 words
The method of claim 1 , wherein the transmission signal power level is adjusted after the predetermined sensing interval.
Claim 7
Dependent Claim
20 words
The method of claim 1 , wherein the transmission signal power level is adjusted while the transmission indicator is inactive.
Claim 8
Dependent Claim
40 words
The method of claim 1 , wherein sensing a transmission signal power level of the transmission signal comprises: taking M measurements of a power level of a transmission packet; computing a first instantaneous power level by averaging the M measurements.
Claim 9
Dependent Claim
51 words
The method of claim 7 , further comprising computing a second instantaneous power level of the transmission signal, comprising: sensing the first instantaneous power level of N transmission packets; and computing the second instantaneous power level by detecting the maximum of the first instantaneous power levels of the N transmission packets.
Claim 10
Dependent Claim
48 words
The method of claim 7 , further comprising computing a second instantaneous power level of the transmission signal, comprising: sensing the first instantaneous power level of N transmission packets; and computing the second instantaneous power level by averaging the first instantaneous power levels of the N transmission packets.
Claim 11
Dependent Claim
33 words
The method of claim 1 , wherein the duty cycle of the transmission signal is computed based on the power on-time divided by the sum of the power on-time and the power off-time.
Claim 12
Dependent Claim
20 words
The method of claim 1 , wherein the duty cycle of the transmission signal is provided by a transmission scheduler.
Claim 13
Dependent Claim
21 words
The method of claim 4 , wherein the adjustable gain amplifier comprises course gain adjustment settings and a fine gain adjustment.
Claim 14
Dependent Claim
30 words
The method of claim 12 , wherein the course adjustment settings are controlled by a scheduler, and the fine gain adjustment is controlled to maintain the transmission signal power level.
Claim 15
Dependent Claim
122 words
A UWB transmitter comprising: a power detector for detecting an instantaneous power level of a transmission signal of the transmitter; an adjustable gain amplifier for adjusting the instantaneous power level of the transmission signal; a controller for receiving a target power level, and setting the adjustable gain amplifier, wherein the instantaneous power level is made substantially equal to the target power level divided by a duty cycle of the transmission signal; taking M measurements of a power level of a transmission packet; computing a first instantaneous power level by averaging the M measurements; sensing the first instantaneous power level of N transmission packets; and computing the instantaneous power level by detecting the maximum first instantaneous power level of the N transmission packets.
Claim 16
Dependent Claim
122 words
A UWB transmitter comprising: a power detector for detecting an instantaneous power level of a transmission signal of the transmitter; an adjustable gain amplifier for adjusting the instantaneous power level of the transmission signal; a controller for receiving a target power level, and setting the adjustable gain amplifier, wherein the instantaneous power level is made substantially equal to the target power level divided by a duty cycle of the transmission signal; taking M measurements of a power level of a transmission packet; computing a first instantaneous power level by averaging the M measurements; sensing the first instantaneous power level of N transmission packets; and computing the instantaneous power level by detecting the maximum first instantaneous power level of the N transmission packets.
Claim 17
Dependent Claim
131 words
A UWB transmitter comprising: a power detector for detecting an instantaneous power level of a transmission signal of the transmitter; an adjustable gain amplifier for adjusting the instantaneous power level of the transmission signal; a controller for receiving a target power level, and setting the adjustable gain amplifier, wherein the instantaneous power level is made substantially equal to the target power level divided by a duty cycle of the transmission signal; taking M measurements of a power level of a transmission packet; computing a first instantaneous power level by averaging the M measurements; wherein sensing the instantaneous power level of the transmission signal, comprises: sensing the first instantaneous power level of N transmission packets; and computing the instantaneous power level averaging the first instantaneous power level of the N transmission packets.
Claim 18
Dependent Claim
131 words
A UWB transmitter comprising: a power detector for detecting an instantaneous power level of a transmission signal of the transmitter; an adjustable gain amplifier for adjusting the instantaneous power level of the transmission signal; a controller for receiving a target power level, and setting the adjustable gain amplifier, wherein the instantaneous power level is made substantially equal to the target power level divided by a duty cycle of the transmission signal; taking M measurements of a power level of a transmission packet; computing a first instantaneous power level by averaging the M measurements; wherein sensing the instantaneous power level of the transmission signal, comprises: sensing the first instantaneous power level of N transmission packets; and computing the instantaneous power level averaging the first instantaneous power level of the N transmission packets.
Claim 19
Dependent Claim
33 words
The transmitter of claim 14 , wherein the duty cycle of the transmission signal is computed based on the power on-time divided by the sum of the power on-time and the power off-time.
Claim 20
Dependent Claim
20 words
The transmitter of claim 16 , wherein the duty cycle of the transmission signal is provided by a transmission scheduler.
Claim 21
Dependent Claim
25 words
The transmitter of claim 14 , wherein the target power level is a root-mean-squared target power level of −41.3 dBm/MHz over a 1 mS period.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2013-06-07 | 2013-12-07 | 2014-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2017-06-07 | 2017-12-07 | 2018-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2021-06-07 | 2021-12-07 | 2022-06-08 | $7700.00 | Window Closed / Lapsed |