公开(公告)号：GB2359463A

公开(公告)日：2001-08-22

申请号：GB0022551

申请日：2000-09-14

Applicant: MOTOROLA INC

Inventor： CHAN YIU K ,  SCHWENT DALE GERARD ,  LANDHERR MICHAEL ,  KLOMSDORE ARMIN ,  HAND MICHAEL

IPC: H03H7/46 ,  H04B1/00 ,  H04B1/04 ,  H04B1/40

Abstract: A radio frequency (RF) coupler apparatus (312) suited for use in a multi-band wireless communication device (200), has a termination device (316) and couplers (314 and 315). Each of the couplers (314 and 315) has through-path coupling elements (318 and 320) and coupled-path coupling elements (319 and 321). Through-path coupling elements (318 and 320) pass a RF signal that is to be transmitted respective frequency bands (TX BAND 1, TX BAND 2) within which the device (200) operates. Coupled-path coupling elements (319 and 321) couple the RF signals passed by respective through-path coupling elements (318 and 320). The coupled-path coupling elements (319 and 321) and the termination device (316) are coupled in series, thereby permitting compatibility with a RF power detector (313) that uses a single detection diode (322).

公开(公告)号：DE10035066B4

公开(公告)日：2009-07-16

申请号：DE10035066

申请日：2000-07-17

Applicant: MOTOROLA INC

Inventor： KLOMSDORF ARMIN ,  WINKELMANN LUKE EDWARD ,  LANDHERR MICHAEL

IPC: H03F3/24 ,  H03G3/20 ,  H03F1/02 ,  H03F1/56 ,  H03F3/20 ,  H03G3/02 ,  H04B1/18 ,  H04B1/40 ,  H04B1/52

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.

公开(公告)号：FR2798789B1

公开(公告)日：2005-12-23

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

IPC: H03H7/46 ,  H04B1/00 ,  H04B1/04 ,  H04B1/40 ,  H03H7/48 ,  H04Q7/20

公开(公告)号：GB2356094B

公开(公告)日：2002-02-13

申请号：GB0017423

申请日：2000-07-14

Applicant: MOTOROLA INC

Inventor： KLOMSDORF ARMIN WERNER ,  WINKELMANN LUKE EDWARD ,  LANDHERR MICHAEL

IPC: H03F3/24 ,  H03F1/02 ,  H03F1/56 ,  H03F3/20 ,  H03G3/02 ,  H04B1/18 ,  H04B1/52

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.

公开(公告)号：GB2359463A8

公开(公告)日：2001-09-24

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

IPC: H03H7/46 ,  H04B1/00 ,  H04B1/04 ,  H04B1/40 ,  H04B7/005

公开(公告)号：GB2356094A

公开(公告)日：2001-05-09

申请号：GB0017423

申请日：2000-07-14

Applicant: MOTOROLA INC

Inventor： KLOMSDORF ARMIN WERNER ,  WINKELMANN LUKE EDWARD ,  LANDHERR MICHAEL

IPC: H03F3/24 ,  H03F1/02 ,  H03F1/56 ,  H03F3/20 ,  H03G3/02 ,  H04B1/18 ,  H04B1/52

Abstract: A power amplifier load adjust system (200) includes a power amplifier (32) and a variable impedance network (36) coupled to the output of the power amplifier (32). The variable impedance network (36) presents a plurality of impedances to the output of the power amplifier (32) responsive to a load control signal. A control circuit generates a transmit power command and a channel frequency command. Memory (40) stores a plurality of control values as a function of output power and frequency. A processing circuit (38) coupled to the variable impedance network (36), the control circuit (20), and the memory (40) 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.

公开(公告)号：AU5657700A

公开(公告)日：2001-03-22

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

IPC: H03H7/46 ,  H04B1/00 ,  H04B1/04 ,  H04B1/40 ,  H01P5/00

公开(公告)号：FR2766030A1

公开(公告)日：1999-01-15

申请号：FR9808756

申请日：1998-07-08

Applicant: MOTOROLA INC

Inventor： LANDHERR MICHAEL ,  KLOMSDORF ARMIN ,  PENNOCK MARK

IPC: H03F1/02 ,  H03F3/193 ,  H03G3/00 ,  H03F3/189 ,  H03L7/099

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.