公开(公告)号：GB2434210A

公开(公告)日：2007-07-18

申请号：GB0600554

申请日：2006-01-12

Applicant: MOTOROLA INC

Inventor： GABRIELA NOCHAM D ,  DADOUN DANIEL ,  FRIEDLANDER HAIM

IPC: G01R27/28 ,  H04H20/67 ,  H03F1/32

Abstract: A power amplifier (124) having an input port receiving an input signal and an output port to provide an output signal representative of an amplified input signal. A signal processing function (128) is operably coupled to the power amplifier (124) and arranged to derive small signal gain and large signal gain values of the power amplifier (124) by calculating a Cumulative Distribution Function (CDF) or a Complementary Cumulative Distribution Function (CCDF) of the input signal and amplified output signal. The power amplifier (124) may be contained in a wireless communication unit (100).

公开(公告)号：GB2404797B

公开(公告)日：2005-07-27

申请号：GB0318612

申请日：2003-08-08

Applicant: MOTOROLA INC

Inventor： FRIEDLANDER HAIM ,  LUZZATTO ARIEL ,  SCHWARTZMAN ZALMAN ,  SHIRAZI GADI

IPC: H04B1/40 ,  H04B1/48 ,  H02H1/04 ,  H02H9/04

公开(公告)号：GB2404797A

公开(公告)日：2005-02-09

申请号：GB0318612

申请日：2003-08-08

Applicant: MOTOROLA INC

Inventor： FRIEDLANDER HAIM ,  LUZZATTO ARIEL ,  SCHWARTZMAN ZALMAN ,  SHIRAZI GADI

IPC: H04B1/40 ,  H04B1/48 ,  H02H1/04 ,  H02H9/04

Abstract: An antenna switch circuit 300 for use in an RF transceiver is connected to a transmitter circuit 103, a receiver circuit 102, and an antenna 101. The switch circuit 300 selectively connects the transmitter 103 and the receiver 102 circuits to the antenna 101. Electrically-controlled devices, such as PIN diodes D1-4, are arranged to perform the switching and to prevent electrostatic discharges of either positive or negative polarity from reaching the transmitter 103 or receiver 102 circuits. Two pairs of PIN diodes D1,3, D2,4 may each be connected so that they have opposed unipolar conductivities. A dc voltage may be applied through an RF-isolating component RFC1, 2 to control the electronically-controlled devices D1-4. The antenna switch circuit 300 may be included in an RF communications apparatus, such as a mobile or fixed radio terminal, or in mobile telephones, mobile radios, or data communications terminals. In a further embodiment the antenna switch circuit may also protect from excessive RF power entering the antenna.

公开(公告)号：GB2381415B

公开(公告)日：2003-12-10

申请号：GB0125463

申请日：2001-10-24

Applicant: MOTOROLA INC

Inventor： SHIRAZI GADI ,  FRIEDLANDER HAIM

IPC: H04B1/10 ,  H04B1/16 ,  H04B1/06