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1. 发明公开

EP0887944A3 Digital processing radio receiver 失效
标题翻译：随着数字信号处理的无线电接收器
公开(公告)号：EP0887944A3
公开(公告)日：2002-04-03
申请号：EP98304700.2
申请日：1998-06-15
申请人： Ford Global Technologies, Inc.
发明人： Wagner, John William , Wargnier, James Alfred , Whitecar, John Elliott , Difiore, Nicolas Lawrence , Hagan, Christopher John , Whikehart, William J.
IPC分类号： H04B1/26 , H04B1/10
CPC分类号： H03G5/28 , H04B1/1036 , H04B2001/1054
摘要： An adaptive intermediate frequency bandwidth control system detects IF signal levels both before and after channel filtering. The two levels are compared to provide a measure of the presence of interfering adjacent channels. This measure is compared to a programmable threshold and the IF bandwidth is narrowed if any interferers are detected. Digital FIR or IIR filtering is used. The invention allows bandwidth switching to be done very quickly with minimal transient effects. A difference threshold is selected depending upon the IF channel bandwidth being used at any given time.

2. 发明公开

EP0715417A3 A mobile telephone receiver with adaptively inserted IF filters and IF filter inserting method 失效
标题翻译：用方法和电路手机用于自适应使用的中频滤波器
公开(公告)号：EP0715417A3
公开(公告)日：1997-07-16
申请号：EP95118726.9
申请日：1995-11-28
申请人： NEC CORPORATION
发明人： Nakamura, Taisuke, NEC Corporation
IPC分类号： H04B1/10 , H04B1/28
CPC分类号： H04B1/1027 , H04B1/26 , H04B1/30 , H04B2001/1054 , H04B2001/1072
摘要： A mobile telephone receiver, utilized in a cellular communications system, is provided with a group of IF bandpass filters (20a, 20b) which are arranged in parallel and which respectively have different passbands with each other. The IF filter group allows an incoming IF signal to be filtered out using one of the IF bandpass filters. An IF filter selector (30) is operatively coupled to the IF filter group and determines a degree of signal contamination by examining a signal which has passed through the IF bandpass filter selected for filtering the incoming IF signal. The selector changes the selection of the IF bandpass filters according to the degree of signal contamination.

3. 发明公开

EP0715417A2 A mobile telephone receiver with adaptively inserted IF filters and IF filter inserting method 失效
标题翻译：用方法和电路手机用于自适应使用的中频滤波器
公开(公告)号：EP0715417A2
公开(公告)日：1996-06-05
申请号：EP95118726.9
申请日：1995-11-28
申请人： NEC CORPORATION
发明人： Nakamura, Taisuke, NEC Corporation
IPC分类号： H04B1/10 , H04B1/28
CPC分类号： H04B1/1027 , H04B1/26 , H04B1/30 , H04B2001/1054 , H04B2001/1072
摘要： A mobile telephone receiver, utilized in a cellular communications system, is provided with a group of IF bandpass filters (20a, 20b) which are arranged in parallel and which respectively have different passbands with each other. The IF filter group allows an incoming IF signal to be filtered out using one of the IF bandpass filters. An IF filter selector (30) is operatively coupled to the IF filter group and determines a degree of signal contamination by examining a signal which has passed through the IF bandpass filter selected for filtering the incoming IF signal. The selector changes the selection of the IF bandpass filters according to the degree of signal contamination.
摘要翻译：的移动电话接收器，在蜂窝通信系统中使用，提供了与一组IF带通滤波器的（20A，20B），它们是在平行和哪个安排分别具有与海誓山盟不同通带。 IF滤波器组允许将传入IF使用IF带通滤波器中的一个被过滤掉的信号。 IF滤波器选择器（30）是通过检查已经通过选择用于过滤传入IF信号将IF带通滤波器的信号可操作地耦合到IF滤波器组和bestimmt度信号的污染。选择改变IF带通滤波器的gemäß到信号污染程度选择。

4. 发明授权

EP0435455B1 Varying bandwidth digital signal detector 失效
标题翻译：具有可变带宽的数字信号检测器。
公开(公告)号：EP0435455B1
公开(公告)日：1995-08-09
申请号：EP90312801.5
申请日：1990-11-23
申请人： AT&T Corp.
发明人： Myer, Robert Evan
IPC分类号： H04B1/16
CPC分类号： H03G5/24 , H04B1/1027 , H04B1/1638 , H04B2001/1054

5. 发明公开

EP0435455A2 Varying bandwidth digital signal detector 失效
标题翻译： Digitalsignaldetektor mit variabler Bandbreite。
公开(公告)号：EP0435455A2
公开(公告)日：1991-07-03
申请号：EP90312801.5
申请日：1990-11-23
申请人： AT&T Corp.
发明人： Myer, Robert Evan
IPC分类号： H04B1/16
CPC分类号： H03G5/24 , H04B1/1027 , H04B1/1638 , H04B2001/1054
摘要： A digital communication system has a plurality of channels with distinct carrier frequencies and overlapping bands. Each receiver includes a filter (405) having a time varying bandwidth. The received signal includes at least one carrier modulated by an information signal having a plurality of levels and transitions between the levels at predetermined intervals and components due to other channels. The receiver is synchronized to a selected one of the carriers. The received signal is translated to baseband and applied to the time varying filter (405) which is set to a first bandwidth at the information signal transitions and reduced in the intervals between transitions. The first filter bandwidth accommodates the information signal transitions. Reducing the bandwidth between transitions limits interference components in the time varying filter output when the the information signal level is sampled. The technique may be applied to various modulation schemes.
摘要翻译：数字通信系统具有多个具有不同载波频率和重叠频带的信道。每个接收机包括具有时变带宽的滤波器。所接收的信号包括由信号信号调制的至少一个载波，该信号信号具有多个电平，并且在预定间隔处的电平和由于其它信道的分量之间的转换。接收机与选定的一个载波同步。接收到的信号被转换为基带并且被应用到时变滤波器，该时变滤波器被设置在信息信号转换处的第一带宽并且在转换之间的间隔中减小。第一个滤波器带宽适应信息信号转换。当信号信号电平被采样时，降低转换之间的带宽会限制时变滤波器输出中的干扰分量。该技术可以应用于各种调制方案。

6. 发明公开

EP3121978A4 RECEIVING DEVICE 无效
公开(公告)号：EP3121978A4
公开(公告)日：2017-12-06
申请号：EP15764201
申请日：2015-03-19
申请人： MITSUBISHI ELECTRIC CORP
发明人： ISHIOKA KAZUAKI
IPC分类号： H04J11/00 , H04B1/10
CPC分类号： H04J11/0066 , H04B1/1036 , H04B2001/1054 , H04J11/0023 , H04L27/2605 , H04L27/2647
摘要： A receiving device according to the present invention is a receiver 1 for receiving a signal including null symbols. The receiver 1 includes a null extraction unit 13 for extracting the null symbols from the received signal, a power calculation unit 14 for calculating a power of each null symbol extracted by the null extraction unit 13, a two-dimensional filter unit 15 for performing a plurality of kinds of filtering for the powers of the respective null symbols calculated by the power calculation unit 14 and obtaining a plurality of kinds of average power values, and a normalizing unit 16 for normalizing a data symbol included in the received signal based on a value obtained by performing nonlinear processing to the average power values obtained by the two-dimensional filter unit 15.

7. 发明公开

EP2226947A3 Selektionsfilteranordnung für einen elektronischen Empfänger und Verfahren zur Selektionsfilterung 有权
标题翻译：选择滤光器组件，用于电子接收器和方法，用于选择滤波
公开(公告)号：EP2226947A3
公开(公告)日：2014-09-17
申请号：EP10154185.2
申请日：2010-02-22
申请人： Robert Bosch GmbH
发明人： Risse, Marcus
IPC分类号： H04B1/10 , H04B1/16 , H04H40/72
CPC分类号： H04B1/1036 , H04B1/1646 , H04B2001/1045 , H04B2001/1054 , H04H40/72
摘要： Vorgeschlagen werden
eine Selektionsfilteranordnung für einen elektronischen Empfänger, insbesondere einen Autoradioempfänger, mit wenigstens einem Selektionsfilter (1) zur Filterung eines auf einem eingestellten Empfangskanal empfangenen frequenzmodulierten Empfangssignals (6), wobei eine Bandbreite des Selektionsfilters (1) einstellbar ist, und mit wenigstens einem Nachbarkanaldetektor (4) zur Detektion von Störungen des Empfangssignals (6) von angrenzenden Frequenzbereichen, wobei der Nachbarkanaldetektor (4) zur Verringerung der Bandbreite des Selektionsfilters (1) bei Auftreten von Störungen des Empfangssignals (6) von angrenzenden Frequenzbereichen eingerichtet ist, dadurch gekennzeichnet, dass eine Detektionseinrichtung (3) vorgesehen ist, die eingerichtet ist, die Ansprechempfindlichkeit des Nachbarkanaldetektors (4) zu vergrößern, wenn der Modulationshub auf dem eingestellten Empfangskanal gering ist, sowie
ein Verfahren zur Selektionsfilterung eines Empfangsignals eines elektronischen Empfängers, insbesondere eines Autoradioempfängers, wobei ein Empfangssignal (6) auf einem eingestellten Empfangskanal empfangen wird, mit einem in seiner Bandbreite einstellbaren Selektionsfilter (1) gefiltert wird, wobei die Bandbreite des Selektionsfilters (1) bei Auftreten von Störungen des Empfangssignals (6) von angrenzenden Frequenzbereichen verringert wird, dadurch gekennzeichnet, dass die Empfindlichkeit für eine Detektion von Störungen des Empfangssignals (6) von angrenzenden Frequenzbereichen mit abnehmendem Modulationshub des Empfangssignals erhöht bzw. mit zunehmendem Modulationshub verringert wird.

8. 发明公开

EP2766999A1 METHODS, SYSTEMS, AND NON-TRANSITORY COMPUTER READABLE MEDIA FOR WIDEBAND FREQUENCY AND BANDWIDTH TUNABLE FILTERING 无效
标题翻译：方法，系统和无线过渡计算机可读介质的宽带速度和滤波器带宽可调
公开(公告)号：EP2766999A1
公开(公告)日：2014-08-20
申请号：EP12839313.9
申请日：2012-11-21
申请人： Physical Devices LLC
发明人： VOSBURGH, Frederick , WILSON, Charley, Theodore , WILKERSON, Jonathan, Ryan
IPC分类号： H04B1/10 , H04B1/16 , H03H7/12
CPC分类号： H03H7/12 , H03H7/0161 , H03H7/46 , H03H11/34 , H03H11/36 , H03H11/365 , H03H2007/013 , H03H2011/0488 , H03H2240/00 , H04B1/1036 , H04B2001/1054 , H04B2001/1063
摘要： Methods, systems, and computer readable media for wideband frequency and bandwidth tunable filtering are disclosed. According to one aspect, the subject matter described herein includes a wideband frequency and bandwidth tunable filter that includes: a first signal path for receiving a first input signal from a filter input node and producing a first output signal; a second signal path for receiving a second input signal from the filter input node and producing a second output signal, the second signal path including a filter circuit for adjusting the frequency spectrum of the second output signal; a conditioning circuit for conditioning at least one of the first input signal and the second input signal; a compensation device for adjusting at least one of a phase of the first output signal relative to a phase of the second output signal and an amplitude of the first output signal relative to an amplitude of the second output signal; and a signal combiner for combining the first output signal with the second output signal to produce a filter output signal having a desired frequency spectrum.

9. 发明公开

EP2750296A1 Filtering out a jammer signal 有权转让
标题翻译： Ausfiltern einesäusserenStörers
公开(公告)号：EP2750296A1
公开(公告)日：2014-07-02
申请号：EP13197833.0
申请日：2013-12-17
申请人： Trimble Navigation Limited
发明人： Riley, Stuart , Krantz, Eric
IPC分类号： H04B1/10 , H04B1/18
CPC分类号： G01S19/21 , G01S19/36 , H04B1/1027 , H04B1/109 , H04B1/18 , H04B2001/1045 , H04B2001/1054
摘要： A low noise amplifier (LNA) assembly comprising a filter circuit for receiving signals from a Mobile Satellite Service (MSS) band and a Radio Navigation Satellite Service (RNSS) band; and an alternative filter circuit configured to filter out a jammer signal.
摘要翻译：一种低噪声放大器（LNA）组件，包括用于从移动卫星服务（MSS）频带和无线电导航卫星服务（RNSS）频带接收信号的滤波器电路; 以及被配置为滤除干扰信号的替代滤波器电路。

10. 发明公开

EP2053753A2 FM receiver 有权
标题翻译： FM-Empfänger
公开(公告)号：EP2053753A2
公开(公告)日：2009-04-29
申请号：EP08018578.8
申请日：2008-10-23
申请人： Sanyo Electric Co., Ltd. , Sanyo Semiconductor Co., Ltd.
发明人： Kobayashi, Keiji
IPC分类号： H04B1/16 , H04B1/10
CPC分类号： H04B1/1036 , H04B2001/1045 , H04B2001/1054
摘要： The IFBPF (80) can variably set a passband width (W F ) and an attenuation slope (K F ). The bandwidth control circuit (102), which is constituted in hardware, controls the W F in accordance with the receiving state, which is composed of a combination of the receiving electric field intensity, the modulation degree, and the intensity of the adjacent-channel interference. A microcomputer (54) controls the K F on the basis of a program stored in a nonvolatile memory (60) and finely adjusts the effective passband width. Control of the W F contradictory for prevention of audio distortion and control of adjacent-channel interference is required when high modulation and adjacent-channel interference exist in a weak electric field state, and the setting becomes difficult. In this particular case, a configuration in which the K F can be modified by a program allows an advantageous receiving state to be readily obtained.
摘要翻译： IFBPF（80）可以可变地设置通带宽度（W F）和衰减斜率（K F）。以硬件构成的带宽控制电路（102）根据由接收电场强度，调制度和相邻信道干扰强度的组合构成的接收状态来控制WF 。微型计算机（54）根据存储在非易失性存储器（60）中的程序来控制K F，并且精细地调整有效通带宽度。当在弱电场状态下存在高调制和相邻信道干扰时，需要控制用于防止音频失真和相邻信道干扰的控制的WF相矛盾，并且设置变得困难。在这种特定情况下，通过程序可以修改K F的结构允许容易地获得有利的接收状态。

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