公开(公告)号：SE520982C2

公开(公告)日：2003-09-16

申请号：SE9603089

申请日：1996-08-27

Applicant: MOTOROLA INC

Inventor： ELDER ROBERT C

IPC: H03D3/00 ,  H03D7/00 ,  H03M1/12 ,  H04B1/00 ,  H04B1/18 ,  H04B1/26 ,  H04B1/28 ,  H04B1/40 ,  H04J1/00 ,  H04J1/05 ,  H04L1/06 ,  H04L1/22 ,  H04W4/18 ,  H04W28/06 ,  H04W88/00 ,  H04L27/20

Abstract: A wideband frequency signal digitizer and method for digitizing multiple bands of a wideband frequency signal. The digitizer and method providing for optimally positioning a segment (402) of the wideband frequency signal within a Nyquist band of an analog-to-digital converter. Remaining segments (402) of the wideband frequency signal are closely positioned relative to the first segment such that the entire wideband frequency signal (400) is easily digitized using a single or multiple analog-to-digital converters (36) while reducing or eliminating undesirable spurious signals.

公开(公告)号：AU686046B2

公开(公告)日：1998-01-29

申请号：AU4610696

申请日：1995-12-28

Applicant: MOTOROLA INC

Inventor： LUREY DANIEL MORRIS ,  ROTTINGHAUS ALAN P ,  RADER SHEILA MARIE ,  LUZ YUDA YEHUDA ,  SMITH PAUL FIELDING ,  SMITH JOHN M ,  PINCKLEY DANNY THOMAS ,  LAIRD KEVIN MICHAEL ,  KOBRINETZ TONY ,  ELDER ROBERT C ,  BAILEY DONALD E

IPC: H04L27/18 ,  H01Q1/24 ,  H01Q3/26 ,  H03D3/00 ,  H03M1/12 ,  H04B1/04 ,  H04B1/26 ,  H04B1/28 ,  H04B7/06 ,  H04B7/08 ,  H04B7/24 ,  H04J1/05 ,  H04L1/06 ,  H04L1/22 ,  H04L25/14 ,  H04L27/26 ,  H04W88/08 ,  H04L27/06 ,  H04L27/20

公开(公告)号：DE19581533T1

公开(公告)日：1997-06-05

申请号：DE19581533

申请日：1995-11-22

Applicant: MOTOROLA INC

Inventor： ELDER ROBERT C

IPC: H03D7/00 ,  H03D3/00 ,  H03M1/12 ,  H04B1/00 ,  H04B1/18 ,  H04B1/26 ,  H04B1/28 ,  H04B1/40 ,  H04J1/00 ,  H04J1/05 ,  H04L1/06 ,  H04L1/22 ,  H04W4/18 ,  H04W28/06 ,  H04W88/00

Abstract: A wideband frequency signal digitizer and method for digitizing multiple bands of a wideband frequency signal. The digitizer and method providing for optimally positioning a segment (402) of the wideband frequency signal within a Nyquist band of an analog-to-digital converter. Remaining segments (402) of the wideband frequency signal are closely positioned relative to the first segment such that the entire wideband frequency signal (400) is easily digitized using a single or multiple analog-to-digital converters (36) while reducing or eliminating undesirable spurious signals.

公开(公告)号：FR2738428A1

公开(公告)日：1997-03-07

申请号：FR9610368

申请日：1996-08-22

Applicant: MOTOROLA INC

Inventor： SMITH PAUL FIELDING ,  SMITH JOHN M ,  ROTTINGHAUS ALAN P ,  RADER SHELIA MARIE ,  PINCKLEY DANNY THOMAS ,  LUZ YUDA YEHUDA ,  LUREY DANIEL MORRIS ,  LAIRD KEVIN M ,  KOBRINETZ TONY ,  ELDER ROBERT C

IPC: H03D7/00 ,  H01Q1/24 ,  H01Q3/26 ,  H03B28/00 ,  H03C1/00 ,  H03C3/00 ,  H03D7/16 ,  H04B1/04 ,  H04B1/16 ,  H04B1/26 ,  H04B1/28 ,  H04B1/38 ,  H04B1/40 ,  H04B7/04 ,  H04B7/06 ,  H04B7/08 ,  H04B7/185 ,  H04B7/24 ,  H04L1/06 ,  H04L1/22 ,  H04L27/20 ,  H04W4/18 ,  H04W88/06 ,  H04Q7/20

Abstract: A multi-channel digital transceiver (400) receives uplink radio frequency signals and converts these signals to digital intermediate frequency signals. Digital signal processing, including a digital converter module (426), is employed to select digital intermediate frequency signals received at a plurality of antennas (412) and to convert these signals to baseband signals. The baseband signals are processed to recover a communication channel therefrom. Downlink baseband signals are also processed and digital signal processing within the digital converter module (426) up converters and modulates the downlink baseband signals to digital intermediate frequency signals. The digital intermediate frequency signals are converted to analog radio frequency signals, amplified and radiated from transmit antennas (420).

公开(公告)号：SE9602101L

公开(公告)日：1996-09-03

申请号：SE9602101

申请日：1996-05-30

Applicant: MOTOROLA INC

Inventor： LONG JAMES F ,  ELDER ROBERT C

IPC: H04B7/26 ,  H04J1/00 ,  H04J13/00 ,  H04W88/10

Abstract: A wireless communication system for simultaneously communicating overlapping wideband and narrowband signals. The system includes a transmitting station for embedding one or more narrowband signals (3-5) in a wideband signal (1) having a frequency spectrum encompassing the narrowband signals, and transmitting the resulting composite wideband signal (2). The system also includes a receiving station for receiving a composite wideband signal (60) and separating the embedded narrowband signal(s) (62, 63) from the wideband signal (61). In one embodiment, a cellular radiotelephone base station (35) is operable as both the transmitting and receiving station, communicating with remote subscriber units (29-31) having conventional transceivers (FDMA, TDMA and/or CDMA). The base station transmitter circuitry (10-17) includes FM and CDMA signal generators (10, 12), a combiner (15) for embedding the narrowband signal (3-5) in the wideband signal (1), and an AGC (14) and power detectors (11, 13) for controlling the narrowband signal power. The receiving circuitry includes a CDMA processing circuit having an FFT circuit (41), a threshold detector (42), a notch filter (43), and an inverse FFT circuit (44) for separating narrowband signals (62, 63) from the CDMA signal (61).

公开(公告)号：FI963345A0

公开(公告)日：1996-08-27

申请号：FI963345

申请日：1996-08-27

Applicant: MOTOROLA INC

Inventor： ELDER ROBERT C

IPC: H03D7/00 ,  H03D3/00 ,  H03M1/12 ,  H04B1/00 ,  H04B1/18 ,  H04B1/26 ,  H04B1/28 ,  H04B1/40 ,  H04J1/00 ,  H04J1/05 ,  H04L1/06 ,  H04L1/22 ,  H04W4/18 ,  H04W28/06 ,  H04W88/00 ,  H03M ,  H04B

Abstract: A wideband frequency signal digitizer and method for digitizing multiple bands of a wideband frequency signal. The digitizer and method providing for optimally positioning a segment (402) of the wideband frequency signal within a Nyquist band of an analog-to-digital converter. Remaining segments (402) of the wideband frequency signal are closely positioned relative to the first segment such that the entire wideband frequency signal (400) is easily digitized using a single or multiple analog-to-digital converters (36) while reducing or eliminating undesirable spurious signals.

公开(公告)号：FI963345A

公开(公告)日：1996-08-27

申请号：FI963345

申请日：1996-08-27

Applicant: MOTOROLA INC

Inventor： ELDER ROBERT C

IPC: H03D7/00 ,  H03D3/00 ,  H03M1/12 ,  H04B1/00 ,  H04B1/18 ,  H04B1/26 ,  H04B1/28 ,  H04B1/40 ,  H04J1/00 ,  H04J1/05 ,  H04L1/06 ,  H04L1/22 ,  H04W4/18 ,  H04W28/06 ,  H04W88/00 ,  H03M ,  H04B

Abstract: A wideband frequency signal digitizer and method for digitizing multiple bands of a wideband frequency signal. The digitizer and method providing for optimally positioning a segment (402) of the wideband frequency signal within a Nyquist band of an analog-to-digital converter. Remaining segments (402) of the wideband frequency signal are closely positioned relative to the first segment such that the entire wideband frequency signal (400) is easily digitized using a single or multiple analog-to-digital converters (36) while reducing or eliminating undesirable spurious signals.

公开(公告)号：EP0800737A4

公开(公告)日：2002-07-24

申请号：EP95944265

申请日：1995-12-28

Applicant: MOTOROLA INC

Inventor： LUREY DANIEL MORRIS ,  ROTTINGHAUS ALAN P ,  RADER SHEILA MARIE ,  LUZ YUDA YEHUDA ,  SMITH PAUL FIELDING ,  SMITH JOHN M ,  PINCKLEY DANNY THOMAS ,  LAIRD KEVIN MICHAEL ,  KOBRINETZ TONY ,  ELDER ROBERT C ,  BAILEY DONALD E

IPC: H04L27/18 ,  H01Q1/24 ,  H01Q3/26 ,  H03D3/00 ,  H03M1/12 ,  H04B1/04 ,  H04B1/26 ,  H04B1/28 ,  H04B7/06 ,  H04B7/08 ,  H04B7/24 ,  H04J1/05 ,  H04L1/06 ,  H04L1/22 ,  H04L25/14 ,  H04L27/26 ,  H04W88/08 ,  H04L27/06 ,  H04B7/04 ,  H04L27/20

CPC classification number: H04B7/0691 ,  H01Q1/246 ,  H01Q3/2605 ,  H03D3/006 ,  H03M1/121 ,  H04B1/0003 ,  H04B1/001 ,  H04B1/0032 ,  H04B1/26 ,  H04B1/28 ,  H04B7/06 ,  H04B7/0802 ,  H04B7/0874 ,  H04B7/24 ,  H04J1/05 ,  H04L1/06 ,  H04L1/22 ,  H04L25/14 ,  H04L27/2647 ,  H04W88/08

Abstract: A digital receiver (200) and a transmitter (300), wherein the digital receiver includes a plurality of antennas (202) for receiving uplink radio frequency signals; a plurality of analog to digital converters (210) for converting the received radio frequency signals into digital signals; a switched digital down converter (214) for down converting one of the digital signals to a baseband IF signal; and a channel processor (228) for recovering one of a plurality of communication channels contained within the baseband IF signal.

公开(公告)号：FI115431B

公开(公告)日：2005-04-29

申请号：FI972748

申请日：1997-06-25

Applicant: MOTOROLA INC

Inventor： LUREY DANIEL MORRIS ,  ROTTINGHAUS ALAN P ,  RADER SHEILA MARIE ,  LUZ YUDA YEHUDA ,  SMITH PAUL FIELDING ,  SMITH JOHN M ,  PINCKLEY DANNY THOMAS ,  LAIRD KEVIN MICHAEL ,  KOBRINETZ TONY ,  ELDER ROBERT C ,  BAILEY DONALD E

IPC: H04L27/18 ,  H01Q1/24 ,  H01Q3/26 ,  H03D3/00 ,  H03M1/12 ,  H04B1/04 ,  H04B1/26 ,  H04B1/28 ,  H04B7/06 ,  H04B7/08 ,  H04B7/24 ,  H04J1/05 ,  H04L1/06 ,  H04L1/22 ,  H04L25/14 ,  H04L27/26 ,  H04W88/08 ,  H04B7/04

公开(公告)号：FI114177B

公开(公告)日：2004-08-31

申请号：FI963345

申请日：1996-08-27

Applicant: MOTOROLA INC

Inventor： ELDER ROBERT C

IPC: H03D7/00 ,  H03D3/00 ,  H03M1/12 ,  H04B1/00 ,  H04B1/18 ,  H04B1/26 ,  H04B1/28 ,  H04B1/40 ,  H04J1/00 ,  H04J1/05 ,  H04L1/06 ,  H04L1/22 ,  H04W4/18 ,  H04W28/06 ,  H04W88/00

Abstract: A wideband frequency signal digitizer and method for digitizing multiple bands of a wideband frequency signal. The digitizer and method providing for optimally positioning a segment (402) of the wideband frequency signal within a Nyquist band of an analog-to-digital converter. Remaining segments (402) of the wideband frequency signal are closely positioned relative to the first segment such that the entire wideband frequency signal (400) is easily digitized using a single or multiple analog-to-digital converters (36) while reducing or eliminating undesirable spurious signals.