公开(公告)号：CA2567971A1

公开(公告)日：2005-12-15

申请号：CA2567971

申请日：2005-04-25

Applicant: MOTOROLA INC

Inventor： BEN-AYUN MOSHE ,  CORSE NIR ,  ROZENTAL MARK ,  GROSSMAN OVADIA

IPC: H03D3/00 ,  H03K9/06

公开(公告)号：AU2005251078A1

公开(公告)日：2005-12-15

申请号：AU2005251078

申请日：2005-04-25

Applicant: MOTOROLA INC

Inventor： ROZENTAL MARK ,  GROSSMAN OVADIA ,  CORSE NIR ,  BEN-AYUN MOSHE

IPC: H03D3/00 ,  H03K9/06

公开(公告)号：GB2414609A

公开(公告)日：2005-11-30

申请号：GB0411888

申请日：2004-05-28

Applicant: MOTOROLA INC

Inventor： BEN-AYUN MOSHE ,  CORSE NIR ,  GROSSMAN OVADIA ,  ROZENTAL MARK

IPC: H03D3/00 ,  H03K9/06

Abstract: A wireless receiver (200) for receiving and demodulating a frequency modulated RF signal by a direct conversion procedure includes an input signal path (101), a local oscillator (111), first mixer (107), a quadrature phase shifter (113), a second mixer (109) and means (218) for producing an output demodulated information signal by producing a combining function of the in-phase and quadrature component. Means (212, 214) periodically detect an error in the relative phase difference between the in-phase and quadrature components and apply (217) a relative adjustment in phase difference to compensate for the detected error.

公开(公告)号：GB2412797A

公开(公告)日：2005-10-05

申请号：GB0407562

申请日：2004-04-02

Applicant: MOTOROLA INC

Inventor： BEN-AYUN MOSHE ,  GROSSMAN OVADIA ,  NIR SHAY ,  ROZENTAL MARK

IPC: H03G3/00 ,  H03G3/30

Abstract: An RF PA, with particular application to a constant envelope RF transmitter, is controlled to operate near saturation by feedback control of its power supply voltage. In a transmitter, a coupler 107 and detector 109 provide a feedback signal to a comparator 115, which also receives a reference signal from reference source 113. A control signal Vcont is produced by integrating (117) the difference signal from the comparator 115. In prior art, the control signal Vcont adjusts the bias of the RFPA 101. In the present invention, the control signal instead adjusts the output of a voltage regulator 151 to provide a variable supply voltage for the RF PA. The voltage regulator 151 may reduce or increase the voltage of the battery supply 104. The bias voltage may be held constant. Increased efficiency is achieved and the efficiency is substantially constant and not dependent on the saturation point of the particular RF PA device 101 that is used.

公开(公告)号：GB2403613B

公开(公告)日：2005-07-06

申请号：GB0315599

申请日：2003-07-04

Applicant: MOTOROLA INC

Inventor： BEN-AYUN MOSHE ,  ROZENTAL MARK ,  AVAYU ITZHAK

IPC: H03F1/32 ,  H03F1/34 ,  H03F3/24

Abstract: A Cartesian loop transmitter having isolator eliminator circuitry is presented. The isolator eliminator circuitry includes a set of low pass and wide band pass as well as narrow band pass filters for each of I- and Q-channels, root mean square detectors and dividers connected to a means for comparing. Signals from the means for comparing are received by a microprocessor which controls attenuation setting. The output level of the transmitter is adjusted by generating a small signal measuring an on-channel signal level and a small signal level and then calculating a ratio of the small signal to the on-channel signal. The attenuation setting is increased if the ratio exceeds a defined threshold.

公开(公告)号：GB2409108A

公开(公告)日：2005-06-15

申请号：GB0328921

申请日：2003-12-13

Applicant: MOTOROLA INC

Inventor： GROSSMAN OVADIA ,  BEN-AYUN MOSHE ,  ROZENTAL MARK

IPC: H01Q1/24 ,  H01Q1/36 ,  H01Q5/00 ,  H01Q5/10 ,  H01Q5/378 ,  H01Q5/49 ,  H01Q11/08

Abstract: A radio unit 200, such as a cellular telephone or a GPS receiver has an antenna arrangement with two resonators. The first resonator 201 is galvanically coupled to the transceiver 203 via a connector 205. The second resonator 207 is magnetically coupled to and galvanically isolated from the first resonator. The second resonator has a coupling section 209 and a radiating section 211. The second antenna may be in a detachable housing which may be friction mounted on the housing of the first resonator (see fig 4). The first resonator may be a helical coil. The coupling section and radiating of the second resonator may be made of a single conductive wire.

公开(公告)号：GB2400250B

公开(公告)日：2005-05-25

申请号：GB0307372

申请日：2003-03-31

Applicant: MOTOROLA INC

Inventor： BEN-AYUN MOSHE ,  NOCHAM GABRIELA ,  ROZENTAL MARK

IPC: H03F1/32 ,  H03F1/34 ,  H04L27/00 ,  H04L27/36 ,  H04B1/04

Abstract: A wireless communication unit ( 300 ) comprises a linearised transmitter ( 325 ) having a forward path, a power amplifier ( 324 ) and a feedback loop, operably coupled to the power amplifier ( 324 ) and the forward path. The feedback loop comprises a loop adjustment function ( 442 ), and the forward path and feedback loop comprise quadrature circuits. A processor ( 322 ) applies a first training signal to a first quadrature circuit loop for routing through the forward path, power amplifier and feedback path to determine at least one first parameter setting of the loop adjustment function ( 442 ). The processor ( 322 ) also applies a second training signal to a second quadrature circuit loop to determine at least a second parameter setting of the loop adjustment function ( 442 ).

公开(公告)号：GB2391428B

公开(公告)日：2005-02-09

申请号：GB0217275

申请日：2002-07-25

Applicant: MOTOROLA INC

Inventor： TETZ KLAUS MARTIN ,  KOENIG HARTMUT ,  SEILER REINHARD ,  BEN-AYUN MOSHE ,  PETERSEN LEIF ,  ROZENTAL MARK

IPC: H03L1/02 ,  H03L7/00 ,  H04Q7/32 ,  H04B7/212 ,  H04Q7/20

公开(公告)号：GB2394145A

公开(公告)日：2004-04-14

申请号：GB0223538

申请日：2002-10-10

Applicant: MOTOROLA INC

Inventor： GROSSMAN OVADIA ,  BEN-AYUN MOSHE ,  ROZENTAL MARK

IPC: H04B1/04 ,  H04B1/52

Abstract: A wireless communication unit (200) includes a transmitter (220) and an antenna 202. An isolator circuit 226 is coupled between the transmitter (220) and the antenna 202 and includes a first directional coupler 310 providing a first transmission path for routing a first portion of the transmit signal, and a second transmission path 320 for routing a second portion of the transmit signal. The first directional coupler is preferably a magic-T four-port device, also known as a 3 dB hybrid. A second coupler 340, is coupled to the first directional coupler 310, for combining the first portion of the transmit signal and the second portion of the transmit signal and providing a combined transmit signal to the antenna 202. The second coupler is preferably a 3 dB three-port device. An advantage of the invention is that a return path to the transmitter for signals reflected at the antenna has acceptable isolation, with minimised insertion loss.

公开(公告)号：GB2390777A

公开(公告)日：2004-01-14

申请号：GB0214694

申请日：2002-06-26

Applicant: MOTOROLA INC

Inventor： BEN-AYUN MOSHE ,  ROZENTAL MARK ,  GROSSMAN OVADIA

IPC: H04B7/185 ,  H04Q7/38

Abstract: A wireless communication system (100) includes a first cellular network (150) to serve terrestrial mobile stations and a second cellular network (110-1) to serve airborne mobile stations. Handover means facilitates handover of communications between the first network and the second network by producing information relating to the location of the mobile station (170) and deriving from this information a list of selected cells to be scanned by the mobile station for prospective handover. A wireless subscriber unit and method of cell re-selection are also described. In this manner, calls are not dropped when transferring a call from, say, an AGA non-terrestrial cell to a terrestrial cell.