公开(公告)号：DE60213439D1

公开(公告)日：2006-09-07

申请号：DE60213439

申请日：2002-06-03

Applicant: MOTOROLA INC

Inventor： BEN-AYUN MOSHE ,  ROZENTAL MARK ,  PASTERNAK ROMAN

IPC: H03G3/30 ,  H03G3/20

Abstract: An automatic gain control (AGC) circuit including: a forward transmission path ( 214 ) having applied at its input an input RF signal and to provide at its output an output signal; a variable gain AGC amplifier ( 210 ) in the forward transmission path for processing the input RF signal, which amplifier has a control input 240 and is responsive to a control signal applied at its control input to vary its gain; a feedback loop ( 220 to 240 ), coupled from the output of the forward transmission path and to the control input of the AGC amplifier; an integrator ( 230, 232 ), coupled to the control input of the amplifier; a voltage source ( 234 ), coupled to the integrator and to the control input of the amplifier; and a further variable gain device ( 215 ) for varying the gain or attenuation of a signal applied to the control input of the AGC amplifier.

公开(公告)号：AT334505T

公开(公告)日：2006-08-15

申请号：AT02730287

申请日：2002-06-03

Applicant: MOTOROLA INC

Inventor： BEN-AYUN MOSHE ,  ROZENTAL MARK ,  PASTERNAK ROMAN

IPC: H03G3/20 ,  H03G3/30

Abstract: An automatic gain control (AGC) circuit including: a forward transmission path ( 214 ) having applied at its input an input RF signal and to provide at its output an output signal; a variable gain AGC amplifier ( 210 ) in the forward transmission path for processing the input RF signal, which amplifier has a control input 240 and is responsive to a control signal applied at its control input to vary its gain; a feedback loop ( 220 to 240 ), coupled from the output of the forward transmission path and to the control input of the AGC amplifier; an integrator ( 230, 232 ), coupled to the control input of the amplifier; a voltage source ( 234 ), coupled to the integrator and to the control input of the amplifier; and a further variable gain device ( 215 ) for varying the gain or attenuation of a signal applied to the control input of the AGC amplifier.

公开(公告)号：GB2409109B

公开(公告)日：2006-08-09

申请号：GB0328922

申请日：2003-12-13

Applicant: MOTOROLA INC

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

IPC: H01Q5/00 ,  H01Q1/36 ,  H01Q5/10 ,  H01Q5/357 ,  H01Q9/36

Abstract: An antenna for use in a mobile radio communication device includes a conductive helical or spiral coil portion extending along an axis and, galvanically coupled to the coil portion, a conductive capacitive top load portion, wherein the coil portion and the top load portion are mutually arranged to provide an electrically resonant structure in a frequency band of operation of the device, wherein the coil portion has a first part and a second part and at least part of the top load portion extends outside or alongside the second part but not the first part of the coil portion, wherein the resonant structure has a plurality of electrical resonances at frequencies in a frequency band of operation of the device, and the first and second parts of the coil portion contribute to one of the resonances and the first part of the coil portion and the second portion contribute to another of the resonances.

公开(公告)号：GB2414609B

公开(公告)日：2006-07-26

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

公开(公告)号：AT324681T

公开(公告)日：2006-05-15

申请号：AT02748837

申请日：2002-07-01

Applicant: MOTOROLA INC ,  MOTOROLA LTD

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

IPC: H01Q1/36 ,  H01Q9/36 ,  H01Q11/08

公开(公告)号：GB2395843B

公开(公告)日：2006-04-26

申请号：GB0227929

申请日：2002-11-29

Applicant: MOTOROLA INC

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

IPC: H01Q21/28 ,  H01Q1/24 ,  H01Q21/24 ,  H04B7/06

Abstract: A wireless subscriber communication unit ( 200 ) comprises an antenna arrangement ( 202, 330, 430 ) for radiating and/or receiving electromagnetic signals. A transmitter ( 220 ) and/or a receiver ( 210 ) is/are operably coupled to the antenna arrangement ( 202, 330, 430 ), for transmitting/receiving a radio signal. An antenna arrangement comprises an internal antenna located within the wireless communication unit ( 200 ) and an external antenna located substantially outside of the wireless communication unit, such that both the internal antenna ( 330, 430 ) and the external antenna ( 202 ) co-operate on substantially the same electromagnetic signal. In this manner, by provision of both an internal and an external antenna the wireless subscriber communication unit is able to function adequately should an antenna become disconnected, malfunction, or its performance suffer from impedance mismatching. Preferably, the internal and external antennas can be configured to be orthogonal to one another, thereby providing the wireless subscriber unit with the ability to operate with a substantially circular or elliptical polarization.

公开(公告)号：AU2005267308A1

公开(公告)日：2006-02-02

申请号：AU2005267308

申请日：2005-06-23

Applicant: MOTOROLA INC

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

IPC: H03K9/00 ,  H03D3/00 ,  H04B1/707 ,  H04L27/08 ,  H04L27/14

公开(公告)号：GB2408424A

公开(公告)日：2005-05-25

申请号：GB0327184

申请日：2003-11-21

Applicant: MOTOROLA INC

Inventor： PILAS MARCO ,  BEN-AYUN MOSHE ,  MALKA HAIM

IPC: H04B1/38 ,  H04M9/00

Abstract: A wireless communication device is provided, comprising a microphone and loudspeaker. The device is operable to communicate wirelessly via direct radio link and/or via a base station. The wireless communication device also comprises a reversibly switchable coupling means, in use in a first switching state operably coupling said microphone to said loudspeaker via an amplifier, and in use in a second switching state operably decoupling said microphone from said loudspeaker. This arrangement advantageously combines the functions of a wireless communications device and a megaphone, so reducing the number of items of equipment a user carries.

公开(公告)号：GB2401248A

公开(公告)日：2004-11-03

申请号：GB0309952

申请日：2003-04-30

Applicant: MOTOROLA INC

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

IPC: H01Q1/24 ,  H01Q5/00 ,  H01Q5/357 ,  H01Q9/30 ,  H01Q21/30

Abstract: An antenna 1 comprises an elongate conducting radiator 7 and a feedline 5. The feedline is screened and has a signal conductor 5a and a screening conductor 5b. A conducting sleeve 9 surrounds both the radiator 7 and the feedline 5 at their junction. The conducting sleeve 9 may or may not be connected to the feedline screening conductor 5b. Region A forms an effective inductance and region B forms an effective capacitance; the sleeve 9 therefore constitutes an rf impedance. The antenna operates as a quarter wave monopole at one frequency band and a half wave dipole at a second band. The two frequency bands may be the GPS (global positioning system) frequency at 1575 MHz and a UHF communications band at 380 to 420 MHz. The antenna may be used in a mobile phone or similar device.

公开(公告)号：GB2400250A

公开(公告)日：2004-10-06

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: Separate test signals are applied to the I and Q channels of a Cartesian amplifier to provide separate estimates of the phase shift setting for the LO phase shifter 442 in the feedback circuit. The average of the two phase shift settings is applied to the phase shifter, giving improved loop IQ phase balance in comparison with calibration using only one test signal. Reduced tolerance 90 degree LO phase shifters 436,422 can be used. Loop stability and wideband noise performance are improved. Test signals may be applied to determine amplitude imbalance. The technique may also be applied to linearized amplifier systems using predistortion.