EP0632584A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Power amplifier for a radio frequency signal
Assignee: Motorola Solutions Inc
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Filing: 1989-09-18
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Granted: —
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Expires: 2009-09-18
Abstract
Abstract An amplifier is provided comprising: power selection means for selecting a nominal output power level from a plurality of discrete levels power control means for controlling output power in response to said power selection means input means for indicating measured output power; and storage means responsive to the input means for storing, for each of said nominal output power levels, information in response to the measured output power, for future adjustment of each nominal output power level when selected.
Inventors
- 👤 Ole Hedevang Jensen
- 👤 Richard I. Little
- 👤 Joseph John Schuler
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-30 05:09
CPC Classifications
H; H03; H03G; H03G3/00; H03G3/20; H04; H04W; H04W52/00; H04W52/04; H04W52/30; H04W52/36; H04W52/367; H03G3/30; H03G3/3036; H03G3/3042; H03G3/3047; H04W52/362; H04W52/52
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
85 words
An amplifier comprising: power selection means (15) for selecting a nominal output power level from a plurality of discrete levels; power control means (16, 21, 22, 9, 12, 13) for controlling output power in response to said power selection means; input means (32) for indicating measured output power; characterized by storage means (30) responsive to the input means for storing, for each of said discrete levels, information in response to the measured output power, for future adjustment of each nominal output power level when selected.
Claim 2
Dependent Claim
61 words
An amplifier according to claim 1, wherein the power selection means comprises means for selecting power sub-levels offset from said selected nominal output power level; and wherein the storage means comprises means for recording, in respect of each of said nominal output power levels, which of said sub-levels gives rise to an output power closest to that nominal output power level.
Claim 3
Dependent Claim
49 words
An amplifier according to claim 2, further comprising a transmitter controller (30) arranged to select a nominal transmit power level, select various power sub-levels offset from that level, store information indicative of the said closest sub-level and repeat the process for each other nominal transmit power level in turn.
Claim 4
Dependent Claim
20 words
An amplifier according to claim 2, wherein each power level and sub-level is represented as a sequence of values (19).
Claim 5
Dependent Claim
68 words
A power amplifier according to any one of the preceding claims, wherein a feedback control loop (22, 12, 13) is provided comprising sensing means for sensing output power and comparator means for receiving and comparing an output power signal from said sensing means and an output power level determining signal, wherein said power control means are arranged to control the output power so as to equalise said signals.
Claim 6
Dependent Claim
59 words
A power amplifier according to claim 5, wherein said comparator means (22) are arranged to receive said output power signal on a first input and said power determining signal on a second input, said inputs being connected to a common voltage level by means of two diodes (23A, 23B), said diodes being adjacent each other in substantially isothermal relationship.
Claim 7
Independent Claim
88 words
A method of controlling output power in amplification of a radio frequency signal by a pulsed power amplifier, comprising the steps of: selecting (15) a nominal output power level from a plurality of discrete levels; controlling output power in response to said selection of level and sub-levels; and measuring (31) the actual output power, storing (30) information in response to the measured output power for each of the plurality of discrete levels and adjusting the nominal output power level at a later time dependent on the stored information.
References Cited (Backward Citations)
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