公开(公告)号：JP2001251202A

公开(公告)日：2001-09-14

申请号：JP2001002844

申请日：2001-01-10

Applicant: MOTOROLA INC

Inventor： KLOMSDORF ARMIN ,  WINKELMANN LUKE ,  SCHWENT DALE GERARD ,  GREENE MATTHEW

IPC: H04B1/04 ,  H04B1/40 ,  H04J3/00 ,  H04J13/00

Abstract: PROBLEM TO BE SOLVED: To provide a modulation format switch that is operated in many operating modes and realizes simplicity, miniaturization, reduction in the manufacturing cost, and enhancement of amplifier performance. SOLUTION: A modulation format switch (20) communicates a signal with an amplifier (15) and a load (25). The amplifier generates modulation format signals. The modulation format switch (20) includes at least one matching network (62, 100), that communicates a signal with the amplifier (15) and the load (25). At least one matching network can have impedance values corresponding to a plurality of the modulation format signals. Furthermore, the modulation format switch (20) also includes variable control elements (70, 72, 74, 76, 102) in the matching network (62, 100). The variable control elements (70, 72, 74, 76, 102) may have one or more impedance values.

公开(公告)号：JP2001068940A

公开(公告)日：2001-03-16

申请号：JP2000206604

申请日：2000-07-07

Applicant: MOTOROLA INC

Inventor： KLOMSDORF ARMIN ,  ALBERTH WILLIAM ,  WINKELMANN LUKE

IPC: H03F3/24 ,  H03F1/02 ,  H03F1/32 ,  H03F3/20 ,  H03G3/20 ,  H04B1/04

Abstract: PROBLEM TO BE SOLVED: To provide a power amplifier that more accurately controls power of an adjacent channel and a next to the adjacent channel transmitted by the power amplifier over a broad band. SOLUTION: This power amplifier circuit adjusts a load to control power of an adjacent channel and of a next to the adjacent channel. A power amplifier 172 amplifies an input signal to generate an amplified signal. A variable impedance network 174 provides a different impedance to an output of the power amplifier 172 in response to a load control signal. A peak detector 180 provides an instruction of a peak average ratio of the amplified signal. The peak detector 180 and a controller 184 connected to the variable impedance network 174 generate a load control signal in response to the instruction of the peak average ratio.

公开(公告)号：FR2797360A1

公开(公告)日：2001-02-09

申请号：FR0009161

申请日：2000-07-13

Applicant: MOTOROLA INC

Inventor： KLOMSDORF ARMIN ,  ALBERTH WILLIAM PAUL JR ,  WINKELMANN LUKE

IPC: H03F1/02 ,  H03F1/32 ,  H03F3/20 ,  H03F3/24 ,  H03G3/20 ,  H04B1/04 ,  H04Q7/22 ,  H04B7/005

Abstract: A power amplifying circuit with load adjust for control of adjacent and alternate channel power. A power amplifier amplifies an input signal to produce an amplified signal. A variable impedance network presents different impedances to the output of the power amplifier responsive to a load control signal. A peak-to-average detector provides an indication of a peak-to-average ratio of the amplified signal. A controller coupled to the peak-to-average detector and the variable impedance network produces the load control signal responsive to the indication of the peak-to-average ratio.

公开(公告)号：FR2797360B1

公开(公告)日：2003-10-31

申请号：FR0009161

申请日：2000-07-13

Applicant: MOTOROLA INC

Inventor： KLOMSDORF ARMIN ,  ALBERTH WILLIAM PAUL JR ,  WINKELMANN LUKE

IPC: H03F1/02 ,  H03F1/32 ,  H03F3/20 ,  H03F3/24 ,  H03G3/20 ,  H04B1/04 ,  H04Q7/22 ,  H04B7/005

Abstract: A power amplifying circuit with load adjust for control of adjacent and alternate channel power. A power amplifier amplifies an input signal to produce an amplified signal. A variable impedance network presents different impedances to the output of the power amplifier responsive to a load control signal. A peak-to-average detector provides an indication of a peak-to-average ratio of the amplified signal. A controller coupled to the peak-to-average detector and the variable impedance network produces the load control signal responsive to the indication of the peak-to-average ratio.

公开(公告)号：DE10035060B4

公开(公告)日：2005-06-23

申请号：DE10035060

申请日：2000-07-17

Applicant: MOTOROLA INC

Inventor： KLOMSDORF ARMIN ,  ALBERTH WILLIAM P ,  WINKELMANN LUKE

IPC: H03F3/24 ,  H03F1/02 ,  H03F1/32 ,  H03F3/20 ,  H03G3/20 ,  H04B1/04 ,  H03F3/21 ,  H03G3/30

Abstract: A power amplifying circuit with load adjust for control of adjacent and alternate channel power. A power amplifier amplifies an input signal to produce an amplified signal. A variable impedance network presents different impedances to the output of the power amplifier responsive to a load control signal. A peak-to-average detector provides an indication of a peak-to-average ratio of the amplified signal. A controller coupled to the peak-to-average detector and the variable impedance network produces the load control signal responsive to the indication of the peak-to-average ratio.

公开(公告)号：DE10035060A1

公开(公告)日：2001-04-12

申请号：DE10035060

申请日：2000-07-17

Applicant: MOTOROLA INC

Inventor： KLOMSDORF ARMIN ,  ALBERTH WILLIAM P ,  WINKELMANN LUKE

IPC: H03F3/24 ,  H03F1/02 ,  H03F1/32 ,  H03F3/20 ,  H03G3/20 ,  H04B1/04 ,  H03F3/21 ,  H03G3/30

Abstract: A power amplifying circuit with load adjust for control of adjacent and alternate channel power. A power amplifier amplifies an input signal to produce an amplified signal. A variable impedance network presents different impedances to the output of the power amplifier responsive to a load control signal. A peak-to-average detector provides an indication of a peak-to-average ratio of the amplified signal. A controller coupled to the peak-to-average detector and the variable impedance network produces the load control signal responsive to the indication of the peak-to-average ratio.