公开(公告)号：AU6161299A

公开(公告)日：2000-04-17

申请号：AU6161299

申请日：1999-09-24

Applicant: MOTOROLA INC

Inventor： BAUTISTA EDWIN E ,  BASTANI BABAK ,  HECK JOSEPH P

IPC: H03D7/14 ,  H03D7/18 ,  H04K1/02 ,  H04B1/04 ,  H04L23/02

Abstract: Second order intermodulation distortion (IM2) occurs when two interfacing signals mix with each other through a second order nonlinearity to produce an intermodulation product at the sum and difference frequencies of the two interferers. To reduce the amount of intermodulation distortion, dynamic matching is employed. In practice, dynamic matching operates to transform coefficients of IM2 distortion from constant values into functions of time where they may be handled by known rejection techniques.

公开(公告)号：AU2002332403A1

公开(公告)日：2003-01-21

申请号：AU2002332403

申请日：2002-07-02

Applicant: MOTOROLA INC

Inventor： MARTIN FREDERICK L ,  STENGEL ROBERT E ,  BAUTISTA EDWIN E

IPC: H04L27/20 ,  H04L27/36

Abstract: Phase shift key modulators ( 100, 500, 1000, 1400, 1700 ) are provided in which a multiphase signal source ( 108, 1402, 1406 - 1412,1702 ) is used to generate a plurality of phases of a carrier signal. A selector ( 110 ) is used to select one phase or a sequence of phases of the carrier signal to represent each bit pattern that is received from a binary data source ( 102, 1422 ). The multiphase signal source preferably comprises a multiphase oscillator that includes a phase locked ring of variable propagation delay inverters ( 202 ). Preferably, a phase sequencer ( 502 ) is used to select a monotonic sequence of phases to represent each bit pattern. Preferably two phase selectors ( 110, 1004 ) are used to simultaneously select two phases of carrier signal, and a phase interpolator ( 1106 ) is used to generate a sequence of phases from the two phases selected by the two phase selectors ( 110, 1004 ).

公开(公告)号：WO03005622A2

公开(公告)日：2003-01-16

申请号：PCT/US0220853

申请日：2002-07-02

Applicant: MOTOROLA INC

Inventor： MARTIN FREDERICK L ,  STENGEL ROBERT E ,  BAUTISTA EDWIN E

IPC: H04L27/20 ,  H04L

CPC classification number: H04L27/2007

Abstract: Phase shift key modulators (100, 500, 1000, 1400, 1700) are provided in which a multiphase signal source (108, 1402, 1406-1412,1702) is used to generate a plurality of phases of a carrier signal. A selector (110) is used to select one phase or a sequence of phases of the carrier signal to represent each bit pattern that is received from a binary data source (102, 1422). The multiphase signal source preferably comprises a multiphase oscillator that includes a phase locked ring of variable propagation delay inverters (202). Preferably, a phase sequencer (502) is used to select a monotonic sequence of phases to represent each bit pattern. Preferably two phase selectors (110, 1004) are used to simultaneously select two phases of carrier signal, and a phase interpolator (1106) is used to generate a sequence of phases from the two phases selected by the two phase selectors (110, 1004).

Abstract translation: 提供了相移键调制器（100,500,1000,1400,1700），其中使用多相信号源（108,1402,1406-1412,1702）来产生载波信号的多个相位。 选择器（110）用于选择载波信号的相位或序列，以表示从二进制数据源（102,1422）接收的每个位模式。 多相信号源优选地包括多相振荡器，其包括可变传播延迟反相器（202）的锁相环。 优选地，相位序列器（502）用于选择相位的单调序列以表示每个位模式。 优选地，两个相位选择器（110,1004）用于同时选择载波信号的两相，并且相位内插器（1106）用于从由两个相位选择器（110,1004）选择的两相中产生相位序列， 。