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公开(公告)号：CA2182382C
公开(公告)日：2001-06-05
申请号：CA2182382
申请日：1995-12-05
Applicant: MOTOROLA INC
Inventor： PINCKLEY DANNY THOMAS , LUZ YUDA YEHUDA , LUREY DANIEL MORRIS , LAIRD KEVIN MICHAEL , KOBRINETZ TONY , ELDER ROBERT C , SMITH PAUL FIELDING , SMITH JOHN M , ROTTINGHAUS ALAN P , RADER SHELIA MARIE , BAILEY DONALD E
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 converts 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).
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公开(公告)号：FR2729022B1
公开(公告)日：1999-12-31
申请号：FR9515130
申请日：1995-12-20
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 , H04Q7/22
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.
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公开(公告)号：SE9702156L
公开(公告)日：1997-08-29
申请号：SE9702156
申请日：1997-06-06
Applicant: MOTOROLA INC
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公开(公告)号：FI972748A
公开(公告)日：1997-06-25
申请号：FI972748
申请日：1997-06-25
Applicant: MOTOROLA INC
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公开(公告)号：CA2206311A1
公开(公告)日：1996-07-11
申请号：CA2206311
申请日：1995-12-28
Applicant: MOTOROLA INC
Inventor： RADER SHEILA MARIE , ROTTINGHAUS ALAN P , LUREY DANIEL MORRIS , LAIRD KEVIN MICHAEL , LUZ YUDA YEHUDA , PINCKLEY DANNY THOMAS , ELDER ROBERT C , KOBRINETZ TONY , BAILEY DONALD E , SMITH PAUL FIELDING , SMITH JOHN M
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 , H04B1/18 , H04L27/00
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.
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Patent Agency Ranking
公开(公告)号：CA2182382A1
公开(公告)日：1996-07-11
申请号：CA2182382
申请日：1995-12-05
Applicant: MOTOROLA INC
Inventor： SMITH PAUL FIELDING , PINCKLEY DANNY THOMAS , SMITH JOHN M , ROTTINGHAUS ALAN P , RADER SHELIA MARIE , LUZ YUDA YEHUDA , LUREY DANIEL MORRIS , LAIRD KEVIN MICHAEL , KOBRINETZ TONY , ELDER ROBERT C , BAILEY DONALD E
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 converts 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).
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公开(公告)号：FI962740A0
公开(公告)日：1996-07-03
申请号：FI962740
申请日：1996-07-03
Applicant: MOTOROLA INC
Inventor： LONG JAMES F , ELDER ROBERT C
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).
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公开(公告)号：BR9506911A
公开(公告)日：1997-09-16
申请号：BR9506911
申请日：1995-12-05
Applicant: MOTOROLA INC
Inventor： LUZ YUDA YEHUDA , SMITH JOHN W , ROTTINGHAUS ALAN P , RADER SHEILA MARIE , PINCKLEY DANIEL THOMAS , LUREY DANIEL MORRIS , LAIRD KEVIN MICHAEL , KOBRINETZ TONY , ELDER ROBERT C , BAILEY DONALD E , SMITH PAUL FIELDING
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 , H04B7/02
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).
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公开(公告)号：FR2729026B1
公开(公告)日：1997-07-25
申请号：FR9513455
申请日：1995-11-14
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).
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公开(公告)号：FI972748A0
公开(公告)日：1997-06-25
申请号：FI972748
申请日：1997-06-25
Applicant: MOTOROLA INC
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