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公开(公告)号：GB2327308A
公开(公告)日：1999-01-20
申请号：GB9814790
申请日：1998-07-09
Applicant: MOTOROLA INC
Inventor： LANDHERR MICHAEL , KLOMSDORF ARMIN WERNER , PENNOCK MARK A
Abstract: A dual drain control uses a variable voltage supply on the drains of a first stage (302) and a second stage (304) to control the output power. In particular, dual drain control having a 1:1 ratio is employed at lower power levels, with single drain control at higher power levels. Such drain control could use signals from a microprocessor, or a specific circuit (203) to generate the drain voltages based upon a control voltage. Use in a cellular telephone is described. The efficiency is improved.
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公开(公告)号：DE10044515A1
公开(公告)日：2001-07-26
申请号：DE10044515
申请日：2000-09-08
Applicant: MOTOROLA INC
Inventor： CHAN YIU K , SCHWENT DALE , LANDHERR MICHAEL , KLOMSDORF ARMIN , HAND MICHAEL
Abstract: The two band coupler (312) has a first coupler (314) with two elements (318,319) one transmitting the High Frequency response and the second attached to a matched load (316). The second band coupler (315) has two elements of coupling (320,321) , one transmitting the HF and the other coupling element connected in series with the first coupling element.
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公开(公告)号：GB2327308B
公开(公告)日：2001-05-16
申请号：GB9814790
申请日：1998-07-09
Applicant: MOTOROLA INC
Inventor： LANDHERR MICHAEL , KLOMSDORF ARMIN WERNER , PENNOCK MARK A
Abstract: According to the method and apparatus of the present disclosure, dual drain control uses a variable voltage supply on the drains of a first stage (302) and a second stage (304) to control the output power. In particular, dual drain control having a 1:1 ratio is employed at lower power levels, with single drain control at higher power levels. Such drain control could be employed by directly varying (1008, 1010) the voltage on the drains of the power amplifier, such as with signals from a microprocessor, or by a specific circuit (203) to generate the drain voltages based upon a control voltage.
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公开(公告)号：FR2798789A1
公开(公告)日：2001-03-23
申请号：FR0011585
申请日：2000-09-12
Applicant: MOTOROLA INC
Inventor： CHAN YIU K , SCHWENT DALE , LANDHERR MICHAEL , KLOMSDORF ARMIN , HAND MICHAEL
Abstract: The two band coupler (312) has a first coupler (314) with two elements (318,319) one transmitting the High Frequency response and the second attached to a matched load (316). The second band coupler (315) has two elements of coupling (320,321) , one transmitting the HF and the other coupling element connected in series with the first coupling element.
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5.发明专利
公开(公告)号：GB2359463B
公开(公告)日：2002-06-26
申请号：GB0022551
申请日：2000-09-14
Applicant: MOTOROLA INC
Inventor： CHAN YIU K , SCHWENT DALE GERARD , LANDHERR MICHAEL , KLOMSDORF ARMIN , HAND MICHAEL
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Patent Agency Ranking
公开(公告)号：BR0002979A
公开(公告)日：2001-07-31
申请号：BR0002979
申请日：2000-07-19
Applicant: MOTOROLA INC
Inventor： KLOMSDORF ARMIN , WINKELMANN LUKE EDWARD , LANDHERR MICHAEL
IPC: H03F3/24 , H03F1/02 , H03F1/56 , H03F3/20 , H03G3/02 , H04B1/18 , H04B1/52 , H03G3/30 , H03F3/21
Abstract: A power amplifier load adjust system includes a power amplifier and a variable impedance network coupled to the output of the power amplifier. The variable impedance network presents a plurality of impedances to the output of the power amplifier responsive to a load control signal. A control circuit generates a transmit power command and a channel frequency command. Memory stores a plurality of control values as a function of output power and frequency. A processing circuit coupled to the variable impedance network, the control circuit, and the memory retrieves the plurality of control values and uses them to generate the load control signal in response to the transmit power command and the channel frequency command.
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公开(公告)号：BR0005388A
公开(公告)日：2001-06-12
申请号：BR0005388
申请日：2000-09-13
Applicant: MOTOROLA INC
Inventor： CHAN YIU K , KLOMSDORF ARMIN , LANDHERR MICHAEL , SCHWENT DALE , HAND MICHAEL
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公开(公告)号：DE10035066A1
公开(公告)日：2001-03-15
申请号：DE10035066
申请日：2000-07-17
Applicant: MOTOROLA INC
Inventor： KLOMSDORF ARMIN , WINKELMANN LUKE EDWARD , LANDHERR MICHAEL
IPC: H03F3/24 , H03F1/02 , H03F1/56 , H03F3/20 , H03G3/02 , H04B1/18 , H04B1/52 , H03G3/20 , H04B1/40
Abstract: The system includes a variable-impedance network (36), connected to the output of a power amplifier (32). The network provides a number of impedances in response to a load control signal at the output of the power amplifier. A control circuit generates a transmission power commend and a channel frequency command. A memory (40) stores a number of control values as a function of the output power and the operating frequency of the power amplifier (32). A processing circuit (38) is connected to the variable-impedance network, the control circuit and the memory. The processing circuit retrieves the control values stored in the memory, and uses them to generate the load control signal in response to the transmission power command. An Independent claim is included for a method of controlling a variable-impedance network at the output of a power amplifier.
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公开(公告)号：FR2766030B1
公开(公告)日：2002-05-10
申请号：FR9808756
申请日：1998-07-08
Applicant: MOTOROLA INC
Inventor： LANDHERR MICHAEL , KLOMSDORF ARMIN , PENNOCK MARK
Abstract: According to the method and apparatus of the present disclosure, dual drain control uses a variable voltage supply on the drains of a first stage (302) and a second stage (304) to control the output power. In particular, dual drain control having a 1:1 ratio is employed at lower power levels, with single drain control at higher power levels. Such drain control could be employed by directly varying (1008, 1010) the voltage on the drains of the power amplifier, such as with signals from a microprocessor, or by a specific circuit (203) to generate the drain voltages based upon a control voltage.
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10.发明专利
公开(公告)号：AU739634B2
公开(公告)日：2001-10-18
申请号：AU5657700
申请日：2000-09-08
Applicant: MOTOROLA INC
Inventor： CHAN YIU K , SCHWENT DALE , LANDHERR MICHAEL , KLOMSDORF ARMIN , HAND MICHAEL
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