公开(公告)号：US6373909B2

公开(公告)日：2002-04-16

申请号：US42678299

申请日：1999-10-22

Applicant: ERICSSON TELEFON AB L M

Inventor： LINDQUIST BJOERN ,  CELANDER JAN ,  MATTISSON SVEN

IPC: H04L27/00 ,  H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04B15/04 ,  H04L1/00 ,  H04L25/08

CPC classification number: H04B15/04 ,  H04B1/0007

Abstract: A communications terminal having a receiver and a method therefor is provided that substantially removes a known interferer from a digitally translated intermediate frequency signal. More specifically, the receiver includes an antenna for receiving a signal, and at least one combination of a mixer and filter for translating in the analog domain the signal to the intermediate frequency signal while maintaining separation from baseband. The receiver also includes a digitizer for digitally translating the intermediate frequency signal containing the known interferer from the analog domain into the digital domain, and an interference cancellation system for removing the known interferer from the digitally translated intermediate frequency signal by utilizing either a DC offset compensator or a correlator compensator.

Abstract translation: 提供一种具有接收机及其方法的通信终端，其基本上从数字转换的中频信号中去除已知的干扰源。 更具体地，接收机包括用于接收信号的天线以及混合器和滤波器的至少一个组合，用于将模拟域中的信号转换为中频信号，同时保持与基带的分离。 接收机还包括用于将包含已知干扰源的中频信号从模拟域数字地转换成数字域的数字转换器，以及用于通过利用DC偏移补偿器从数字转换的中频信号中去除已知干扰源的干扰消除系统 或相关器补偿器。

公开(公告)号：WO9901933A3

公开(公告)日：1999-04-01

申请号：PCT/SE9801219

申请日：1998-06-23

Applicant: ERICSSON TELEFON AB L M

Inventor： ISBERG MARTIN ,  LINDQUIST BJOERN ,  JAKOBSSON PETER ,  CELANDER JAN ,  GUSTAFSSON KJELL ,  KUENKEL LARS PETER ,  CARLSSON TORSTEN ,  MANNERSTAALE JACOB

IPC: H04L27/22 ,  H03J5/24 ,  H04B1/16 ,  H04B1/30 ,  H04B1/40 ,  H04J1/04 ,  H04W88/06

CPC classification number: H04W88/06 ,  H03J5/244 ,  H04B1/005 ,  H04B1/0057 ,  H04B1/006 ,  H04B1/406

Abstract: A multiple-mode receiver incorporating direct conversion (processing received signals using intermediate frequencies within the same frequency range as the received signal bandwidth) rather than superheterodyne circuitry, allowing receiver hardware components to be re-used rather than replicated for each band. Various embodiments are disclosed in which low pass filters, mixers, quadrature generators, oscillators, and amplifiers are re-used.

Abstract translation: 包括直接转换的多模式接收机（处理使用与接收信号带宽相同的频率范围内的中频）的接收信号，而不是超外差电路，允许重复使用接收机硬件组件而不是复制每个频带。 公开了各种实施例，其中重新使用低通滤波器，混频器，正交发生器，振荡器和放大器。

公开(公告)号：AU1696301A

公开(公告)日：2001-05-08

申请号：AU1696301

申请日：2000-10-13

Applicant: ERICSSON TELEFON AB L M

Inventor： LINDQUIST BJORN ,  MATTISSON SVEN ,  CELANDER JAN

IPC: H04L27/00 ,  H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04B15/04 ,  H04L1/00 ,  H04L25/08

Abstract: A communications terminal having a receiver and a method therefor is provided that substantially removes a known interferer from a digitally translated intermediate frequency signal. More specifically, the receiver includes an antenna for receiving a signal, and at least one combination of a mixer and filter for translating in the analog domain the signal to the intermediate frequency signal while maintaining separation from baseband. The receiver also includes a digitizer for digitally translating the intermediate frequency signal containing the known interferer from the analog domain into the digital domain, and an interference cancellation system for removing the known interferer from the digitally translated intermediate frequency signal by utilizing either a DC offset compensator or a correlator compensator.

公开(公告)号：AU2013301581A1

公开(公告)日：2015-02-26

申请号：AU2013301581

申请日：2013-08-05

Applicant: ERICSSON TELEFON AB L M

Inventor： BERGLJUNG CHRISTIAN ,  CELANDER JAN ,  JAKOBSSON PETER ,  JEPPSSON HENRIK

IPC: H04B17/00 ,  G01R23/20

Abstract: Testing radio equipment is described wherein an interfering signal is swept in frequency with a step size that is chosen proportional to the bandwidth of the receive channel of the radio equipment. For example, a respective frequency bandwidth (BCh) is determined (601) of a plurality of receive channels of the radio equipment. A proportionality constant is selected (603) for a frequency step size. For each respective receive channel, interfering radio signals are generated (605) and the interfering radio signals are controlled to stepwise sweep in frequency outside of each respective receive channel. The stepwise sweeping of the interfering frequency is performed with a frequency step size that is a product of the respective bandwidth and the selected proportionality constant. Any spurious response is detected (607) in the respective receive channel.

公开(公告)号：AT464699T

公开(公告)日：2010-04-15

申请号：AT00979496

申请日：2000-10-13

Applicant: ERICSSON TELEFON AB L M

Inventor： LINDQUIST BJOERN ,  MATTISSON SVEN ,  CELANDER JAN

IPC: H04B1/10 ,  H04L27/00 ,  H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B15/04 ,  H04L1/00 ,  H04L25/08

Abstract: A communications terminal having a receiver and a method therefor is provided that substantially removes a known interferer from a digitally translated intermediate frequency signal. More specifically, the receiver includes an antenna for receiving a signal, and at least one combination of a mixer and filter for translating in the analog domain the signal to the intermediate frequency signal while maintaining separation from baseband. The receiver also includes a digitizer for digitally translating the intermediate frequency signal containing the known interferer from the analog domain into the digital domain, and an interference cancellation system for removing the known interferer from the digitally translated intermediate frequency signal by utilizing either a DC offset compensator or a correlator compensator.

公开(公告)号：DE69832705T2

公开(公告)日：2006-06-22

申请号：DE69832705

申请日：1998-06-23

Applicant: ERICSSON TELEFON AB L M

Inventor： ISBERG MARTIN ,  LINDQUIST BJOERN ,  JAKOBSEN PETER ,  CELANDER JAN ,  GUSTAFSSON KJELL ,  KUENKEL PETER ,  CARLSSON TORSTEN ,  MANNERSTALE JACOB

IPC: H03J1/00 ,  H04L27/22 ,  H03J5/24 ,  H04B1/16 ,  H04B1/30 ,  H04B1/40 ,  H04J1/04 ,  H04W88/06

Abstract: A multiple-mode receiver incorporating direct conversion (processing received signals using intermediate frequencies within the same frequency range as the received signal bandwidth) rather than superheterodyne circuitry, allowing receiver hardware components to be re-used rather than replicated for each band. Various embodiments are disclosed in which low pass filters, mixers, quadrature generators, oscillators, and amplifiers are re-used.

公开(公告)号：ID25842A

公开(公告)日：2000-11-09

申请号：ID20000189

申请日：1998-06-23

Applicant: ERICSSON TELEFON AB L M

Inventor： ISBERG MARTIN ,  LINDQUIST BJORN ,  JAKOBSSON PETER ,  CELANDER JAN ,  GUSTAFSSON KJELL ,  KUNKEL LARS PETER ,  CARLSSON TORSTEN ,  MANNERSTALE JACOB

IPC: H04L27/22 ,  H03J5/24 ,  H04B1/16 ,  H04B1/30 ,  H04B1/40 ,  H04J1/04 ,  H04W88/06

Abstract: A multiple-mode receiver incorporating direct conversion (processing received signals using intermediate frequencies within the same frequency range as the received signal bandwidth) rather than superheterodyne circuitry, allowing receiver hardware components to be re-used rather than replicated for each band. Various embodiments are disclosed in which low pass filters, mixers, quadrature generators, oscillators, and amplifiers are re-used.

公开(公告)号：MY122582A

公开(公告)日：2006-04-29

申请号：MYPI20004727

申请日：2000-10-10

Applicant: ERICSSON TELEFON AB L M

Inventor： MATTISON SVEN ,  LINDQUIST BJORN ,  CELANDER JAN

IPC: H04L27/00 ,  H03D1/04 ,  H03D1/06 ,  H03K5/01 ,  H03K6/04 ,  H04B1/10 ,  H04B15/04 ,  H04L1/00 ,  H04L25/08

Abstract: A COMMUNICATIONS TERMINAL (100 ) HAVING A RECEIVER (110;610) AND A METHOD THEREFOR IS PROVIDED THAT SUBSTANTIALLY REMOVES A KNOWN INTERFERER FROM A DIGITALLY TRANSLATED INTERMEDIATE FREQUENCY SIGNAL . MORE SPECIFICALLY , THE RECEIVER INCLUDES AN ANTENNA (112;602) FOR RECEIVING A SIGNAL , AND AT LEAST ONE COMBINATION OF A MIXER (118,122;614A,614B) AND FILTER (120,124;618A,618B) FOR TRANSLATING IN THE ANALOG DOMAIN THE SIGNAL TO THE INTERMEDIATE FREQUENCY SIGNAL WHILE MAINTAINING SEPARATION FROM BASEBAND . THE RECEIVER ALSO INCLUDES A DIGITIZER (128; 620A, 620B) FOR DIGITALLY TRANSLATING THE INTERMEDIATE FREQUENCY SIGNAL CONTAINING THE KNOWN INTERFERER FROM THE ANAL0G DOMAIN INTO THE DIGITAL DOMAIN , AND AN INTERFERER CANCELLATION SYSTEM (130; 130'') FOR REMOVING THE KNOWN INTERFERER FROM THE DIGITALLY TRANSLATED INTERMEDIATE FREQUENCY SIGNAL BY UTILIZING EITHER A DC OFFSET COMPENSATOR (144) OR A CORRELATOR COMPENSATOR (142'').FIGURE 2

公开(公告)号：DE69832705D1

公开(公告)日：2006-01-12

申请号：DE69832705

申请日：1998-06-23

Applicant: ERICSSON TELEFON AB L M

Inventor： ISBERG MARTIN ,  LINDQUIST BJOERN ,  JAKOBSEN PETER ,  CELANDER JAN ,  GUSTAFSSON KJELL ,  KUENKEL PETER ,  CARLSSON TORSTEN ,  MANNERSTALE JACOB

IPC: H04L27/22 ,  H03J1/00 ,  H03J5/24 ,  H04B1/16 ,  H04B1/30 ,  H04B1/40 ,  H04J1/04 ,  H04W88/06

Abstract: A multiple-mode receiver incorporating direct conversion (processing received signals using intermediate frequencies within the same frequency range as the received signal bandwidth) rather than superheterodyne circuitry, allowing receiver hardware components to be re-used rather than replicated for each band. Various embodiments are disclosed in which low pass filters, mixers, quadrature generators, oscillators, and amplifiers are re-used.

公开(公告)号：MY120748A

公开(公告)日：2005-11-30

申请号：MYPI9802861

申请日：1998-06-24

Applicant: ERICSSON TELEFON AB L M

Inventor： ISBERG MARTIN ,  LINDQUIST BJORN ,  JAKOBSSON PETER ,  CELANDER JAN ,  GUSTAFSSON KJELL ,  KUNKER LARS-PETER ,  CARLSSON TORSTEN ,  MANNERSTRALE JACOB

IPC: H03J1/00 ,  H04L27/22 ,  H03J5/24 ,  H04B1/16 ,  H04B1/30 ,  H04B1/40 ,  H04J1/04 ,  H04W88/06

Abstract: A MULTIPLE-MODE RECEIVER INCORPORATING DIRECT CONVERSION (PROCESSING RECEIVED SIGNALS USING INTERMEDIATE FREQUENCIES WITHIN THE SAME FREQUENCY RANGE AS THE RECEIVED SIGNAL BANDWIDTH) RATHER THAN SUPERHETERODYNE CIRCUITRY, ALLOWING RECEIVER HARDWARE COMPONENTS TO BE RE-USED RATHER THAN REPLICATED FOR EACH BAND. VARIOUS EMBODIMENTS ARE DISCLOSED IN WHICH LOW PASS FILTERS (42A, 42B), MIXERS (40A, 4LA; 40B, 4LB) QUADRATURE GENERATORS (38A, 38B), OSCILLATORS (36A, 36B), AND AMPLIFIERS (34A, 34B) ARE RE-USED.