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1. 发明申请

WO1996012341A1 WIDE BAND RADIO-FREQUENCY CONVERTER HAVING MULTIPLE USE OF INTERMEDIATE FREQUENCY TRANSLATORS 审中-公开
标题翻译：宽带无线电频率转换器，具有多种中频转换器的多种使用
公开(公告)号：WO1996012341A1
公开(公告)日：1996-04-25
申请号：PCT/US1995014267
申请日：1995-10-12
申请人： WESTINGHOUSE ELECTRIC CORPORATION , GEC-MARCONI ELECTRONIC SYSTEMS CORPORATION
发明人： WESTINGHOUSE ELECTRIC CORPORATION , GEC-MARCONI ELECTRONIC SYSTEMS CORPORATION , CALDWELL, Stephen, P. , HARRIS, Marvine, Jr. , MATSAKIS, Demetrios, J. , MINARIK, Ronald, W. , SCHMIDT, Kenneth, M. , WEIGAND, Benjamin, F. , PRILL, Robert, S. , SIEGEL, Arnold, B.
IPC分类号： H03D07/16
CPC分类号： H03J5/242 , H03D7/161
摘要： A wideband RF-to-IF frequency converter providing multiple use of frequency conversion components for many different types of RF input signals. In specific examples, many different types of signals for communication, navigation, and for interrogation are processed through at least partly common frequency-conversion channels. Such RF input signals in the range from approximately 2 MHz to 2,000 MHz are converted to output IF frequencies, such as 1 MHz and 30 MHz, for further processing in the common receiver. Some narrow band signals, after conversion to IF, are subjected to off-center filtering in relatively broadband IF filters. Input RF filters are not used. Among several frequency conversion stages, only one of the local oscillator signals is tunable; but it is made tunable in relatively small, precise steps by using a double phase-locked loop arrangement in the frequency synthesizer.
摘要翻译：宽带RF至IF频率转换器为多种不同类型的RF输入信号提供多种频率转换组件。在具体示例中，用于通信，导航和询问的许多不同类型的信号通过至少部分共同的频率转换信道来处理。在大约2MHz到2,000MHz的范围内的这样的RF输入信号被转换成诸如1MHz和30MHz的输出IF频率，用于在公共接收机中的进一步处理。转换成IF后的一些窄带信号在相对较宽的IF滤波器中进行偏心滤波。不使用输入RF滤波器。在多个频率转换阶段中，只有一个本地振荡器信号是可调谐的; 但是通过使用频率合成器中的双锁相环布置，可以在相对较小，精确的步骤中进行可调谐。

2. 发明申请

WO1996028885A1 SLOPE, DRIFT AND OFFSET COMPENSATION IN ZERO-IF RECEIVERS 审中-公开
标题翻译：零接收方的斜率，干扰和偏差补偿
公开(公告)号：WO1996028885A1
公开(公告)日：1996-09-19
申请号：PCT/US1996002983
申请日：1996-03-01
申请人： ERICSSON INC.
发明人： ERICSSON INC. , LINDQUIST, Björn , DENT, Paul, W.
IPC分类号： H03D07/16
CPC分类号： H03D7/165 , H03D3/008 , H04L25/03273 , H04L27/233 , H04L2025/03401 , H04L2025/03407
摘要： A method for processing a signal modulated with information symbols to account for an additive offset and slope is disclosed. First, an inital estimate of offset and slope is made and hypotheses of all possible values of a sequence of one or more information symbols are then made. For each of said hypotheses, the associated data symbol sequence is used to make an improved estimate of offset and slope and the improved estimate of offset and slope are stored against each of the hypotheses. For each hypothesis, the improved estimate of offset and slope is used in calculating an expected signal value and a mismatch between a sample of the modulated signal and the expected value is computed. The hypotheses are then sequentially extended by one symbol, the slope and offset estimates are updated and the mismatches are accumulated to form a path metric value for each extended hypothesis, and resolving between said hypotheses based on said path metric values using a Viterbi Sequential Maximum Likelihood Sequence Estimation process to produce a most likely hypothesis of said modulated information symbols substantially unimpaired by said additive slope and offset.
摘要翻译：公开了一种处理用信息符号调制以解决附加偏移和斜率的信号的方法。首先，进行偏移和斜率的初始估计，然后进行一个或多个信息符号的序列的所有可能值的假设。对于每个所述假设，相关联的数据符号序列用于对偏移和斜率进行改进的估计，并且针对每个假设存储改进的偏移和斜率估计。对于每个假设，在计算预期信号值时使用改进的偏移和斜率估计，并且计算调制信号的样本与期望值之间的失配。然后将假设顺序地扩展一个符号，更新斜率和偏移估计，并且不匹配被累积以形成每个扩展假设的路径度量值，并且基于使用维特比序列最大似然的所述路径度量值在所述假设之间进行解析序列估计过程，以产生基本上不受所述相加斜率和偏移量影响的所述调制信息符号的最可能假设。

3. 发明申请

WO1990014711A1 A CHANNEL FREQUENCY GENERATOR FOR USE WITH A MULTI-FREQUENCY OUTPUT GENERATOR 审中-公开
标题翻译：用于多频输出发生器的通道频率发生器
公开(公告)号：WO1990014711A1
公开(公告)日：1990-11-29
申请号：PCT/US1990002695
申请日：1990-05-18
申请人： SCIENTIFIC ATLANTA, INC.
发明人： SCIENTIFIC ATLANTA, INC. , MCKINNEY, Larry, S. , PIDGEON, Rezin, E., Jr.
IPC分类号： H03D07/16
CPC分类号： H03D7/163 , H04N7/10
摘要： An apparatus and method is disclosed which phase locks a frequency-agile modulated output signal to any selected channel of a comb generated output (25). The phase error of an input signal (14) is tracked, the input signal is modulated up to a carrier output frequency, and the modulated output frequency is locked to the comb generator (10) output by subtracting the input signal and negating the phase error.

4. 发明申请

WO1997023034A1 FREQUENCY AGILE MODULATOR 审中-公开
标题翻译：频率调制器
公开(公告)号：WO1997023034A1
公开(公告)日：1997-06-26
申请号：PCT/US1996019989
申请日：1996-12-16
申请人： THE WHITAKER CORPORATION , PRESCHUTTI, Joseph, P. , FLICKINGER, Steven, Lee , FETTEROLF, James, Ray , NONNEMACHER, Elwood, D.
发明人： THE WHITAKER CORPORATION
IPC分类号： H03D07/16
CPC分类号： H03J1/005 , H03D7/161 , H04N7/106
摘要： A frequency agile modulator which modulates input baseband video and audio signals to a selected NTSC channel. The modulator includes a microprocessor which has as inputs a channel up push-button switch and a channel down push-button switch. An amplifier stage of the modulator is turned off by the microprocessor when the channel is being changed. A low pass noise limiting filter and a high pass noise limiting filter are connected in parallel between the amplifier stage output and the output of the modulator and, depending upon the selected channel, either one or the other of the filters is inserted in the signal path by the microprocessor. Equalizer circuitry is provided at the output of the modulator so that lower frequency signals are transmitted at a lower level than higher frequency signals.
摘要翻译：频率敏捷调制器，其将输入基带视频和音频信号调制到所选择的NTSC信道。调制器包括具有通道上推按钮开关和通道向下按钮开关作为输入的微处理器。当通道改变时，微处理器关闭调制器的放大器级。低通噪声限制滤波器和高通噪声限制滤波器并联连接在放大器级输出端和调制器的输出端之间，并根据所选择的通道，将一个或另一个滤波器插入信号路径由微处理器。在调制器的输出处提供均衡器电路，使得较低频率信号以比较高频率信号更低的电平传输。

5. 发明申请

WO1996031944A1 IN-PHASE AND QUADRATURE SAMPLING CIRCUIT 审中-公开
标题翻译：相间和正交采样电路
公开(公告)号：WO1996031944A1
公开(公告)日：1996-10-10
申请号：PCT/US1996004685
申请日：1996-04-05
申请人： ANALOG DEVICES, INC.
发明人： ANALOG DEVICES, INC. , LEE, Wai, L. , GRANT, Norman, D. , FERGUSON, Paul, F., Jr.
IPC分类号： H03D07/16
CPC分类号： H03D7/165
摘要： A circuit that provides samples of in-phase and quadrature componenents of an input waveform includes an oversampling sigma-delta ADC that receives the input waveform and converts the input waveform to digital samples at an oversampling rate. A first digital filter, coupled to the ADC, receives the digital samples from the ADC and provides the in-phase component samples of the input waveform. A second digital filter, coupled to the ADC, receives the digital samples from the ADC and provides the quadrature component samples of the input waveform.
摘要翻译：提供输入波形的同相和正交分量样本的电路包括过采样Σ-ΔADC，其接收输入波形，并以过采样速率将输入波形转换为数字采样。耦合到ADC的第一个数字滤波器从ADC接收数字采样，并提供输入波形的同相分量采样。耦合到ADC的第二个数字滤波器从ADC接收数字采样，并提供输入波形的正交分量采样。

6. 发明申请

WO1998010511A1 FREQUENCY CONVERSION CIRCUIT AND METHOD FOR MILLIMETER WAVE RADIO 审中-公开
标题翻译：频率转换电路和毫米波无线电的方法
公开(公告)号：WO1998010511A1
公开(公告)日：1998-03-12
申请号：PCT/US1997014763
申请日：1997-08-22
申请人： HE HOLDINGS, INC., doing business as HUGHES ELECTRONICS
发明人： HE HOLDINGS, INC., doing business as HUGHES ELECTRONICS , PAUL, Jeffrey, A. , WARZMAN, Chaim , SANTOS, Raymond, Jr. , HENNEGAN, Richard, T. , BLACKETER, Steve
IPC分类号： H03D07/16
CPC分类号： H04B1/403 , H03D7/163 , H04B1/26
摘要： A frequency upconversion circuit in a millimeter wave radio transmitter uses a low frequency synthesizer (38) and a parallel frequency mixing and multiplication network for converting a low frequency signal to a millimeter wave radio frequency (RF) signal. A frequency downconversion circuit in a millimeter wave radio receiver uses a low frequency synthesizer (62) and a parallel frequency mixing and multiplication network for converting a millimeter wave RF signal to a low frequency signal.
摘要翻译：毫米波无线电发射机中的上变频电路使用低频合成器（38）和用于将低频信号转换为毫米波射频（RF）信号的并行混频和乘法网络。毫米波无线电接收机中的频率下变频电路使用低频合成器（62）和用于将毫米波RF信号转换为低频信号的并行频率混合和乘法网络。

7. 发明申请

WO1993006654A1 HIGH FREQUENCY CONVERTER 审中-公开
标题翻译：高频转换器
公开(公告)号：WO1993006654A1
公开(公告)日：1993-04-01
申请号：PCT/EP1992002108
申请日：1992-09-15
申请人： THOMSON CONSUMER ELECTRONICS S.A. , FUJIMOTO, Masahiro , GRIMM, Jean-Paul , MAIER, Gerhard
发明人： THOMSON CONSUMER ELECTRONICS S.A.
IPC分类号： H03D07/16
CPC分类号： H04N7/20 , H03D7/161 , H03D7/18
摘要： The present invention relates to a high frequency converter, which is able to convert simultaneously two high frequency bands into one single receive frequency band. According to the present invention a double conversion is provided, whereby a first of the said high frequency band is just single converted and a second of the said high frequency bands is double converted. The present invention is preferred to be taken for the reception of signals from the satellite KOPERNIKUS.

8. 发明申请

WO1998031094A1 FREQUENCY SYNTHESIZER CIRCUIT FOR MOBILE STATIONS 审中-公开
标题翻译：用于移动站的频率合成器电路
公开(公告)号：WO1998031094A1
公开(公告)日：1998-07-16
申请号：PCT/US1997020451
申请日：1997-11-03
申请人： ERICSSON INC.
发明人： ERICSSON INC. , LOMBARDI, Frank, Thomas
IPC分类号： H03D07/16
CPC分类号： H03D7/165 , H03L7/185
摘要： In general, the present invention provides a low cost mechanism for reducing the settling time and/or improving the phase noise performance of a frequency synthesizer in a mobile station. In one embodiment (Fig. 7), the present invention eliminates the need for using two transmit offset synthesizers (44 and 52) (Fig. 5) in a mobile station (100) (Fig. 6) which must be able to operate on two different frequency bands characterized by different transmit-receive (TX-RX) channel separation. According to the present invention, one or both of the transmit offset synthesizers (44 and 52) may be eliminated by deriving an appropriate transmit offset signal from an auxiliary synthesizer (38) in the mobile station (100) through a relatively simple and inexpensive frequency scaling circuit (e.g., frequency divider or multiplier) (130), and by using a fast settling main channel synthesizer (140) to hop between two different frequencies when the mobile station (100) is switching between transmitting and receiving, respectively.
摘要翻译：通常，本发明提供了一种用于降低移动台中的频率合成器的建立时间和/或提高相位噪声性能的低成本机制。在一个实施例（图7）中，本发明消除了在移动台（100）（图6）中使用两个发射偏移合成器（44和52）（图5）的必要性，其必须能够在以不同的发射 - 接收（TX-RX）信道分离为特征的两个不同的频带。根据本发明，可以通过相对简单且便宜的频率从移动台（100）中的辅助合成器（38）导出适当的发射偏移信号来消除发射偏移合成器（44和52）中的一个或两个并且当移动站（100）分别在发送和接收之间进行切换时，通过使用快速建立主频道合成器（140）在两个不同频率之间跳转，缩放电路（例如，分频器或乘法器）（130）。

9. 发明申请

WO1996019863A1 IMAGE-REJECT MIXERS 审中-公开
标题翻译：图像混合器
公开(公告)号：WO1996019863A1
公开(公告)日：1996-06-27
申请号：PCT/GB1995002995
申请日：1995-12-21
申请人： UNIVERSITY OF BRISTOL , McGEEHAN, Joseph, Peter , BEACH, Mark, Anthony , KENINGTON, Peter, Blakeborough , NIX, Andrew, Robert
发明人： UNIVERSITY OF BRISTOL
IPC分类号： H03D07/16
CPC分类号： H03D7/18 , H03D7/166
摘要： An image-reject mixer includes means for adding a signal to a RF input signal. Any imbalance in the mixer circuitry, which would lead to imperfect image suppression, is corrected by detecting any resulting local oscillator component in the mixer output signal, and adjusting the balance to minimise the size of that component.
摘要翻译：图像拒绝混合器包括用于将信号添加到RF输入信号的装置。通过检测混频器输出信号中的任何得到的本地振荡器分量，并调整平衡以最小化该分量的大小来校正混频器电路中将导致不完美图像抑制的任何不平衡。

10. 发明申请

WO1996001006A1 SPURIOUS RESPONSE REJECTING MIXER USING SPREAD SPECTRUM TECHNIQUES 审中-公开
标题翻译：使用传播光谱技术的极大反应混合器
公开(公告)号：WO1996001006A1
公开(公告)日：1996-01-11
申请号：PCT/US1995008019
申请日：1995-06-26
申请人： HONEYWELL INC.
发明人： HONEYWELL INC. , KOLBER, Mark, A.
IPC分类号： H03D07/16
CPC分类号： H04B1/26 , H03B29/00 , H03D7/163 , H03D7/18 , H04B7/18506
摘要： A mixing circuit uses spread spectrum techniques to discriminate between desired signals and image responses associated with frequency translation, signal mixing and the like. In a receiver, the radio frequency (R.F.) signal is mixed with a first spread spectrum local oscillator (L.O.) producing a spread spectrum intermediate frequency (I.F.) signal. The spread spectrum (I.F.) is filtered and mixed with a second spread spectrum (L.O.) which de-spreads the desired signal in the (I.F.). The second (L.O.) is driven with the same spreading function as the first (L.O.) therefore the desired signal is correctly de-spread while the spurious signals are not. The circuit is equally useful in both receivers and transmitters. In general, the circuit is useful in any system where two or more signals are multiplied and it is desired to reject spurious signals.
摘要翻译：混合电路使用扩频技术来区分期望的信号和与频率转换，信号混合等相关联的图像响应。在接收机中，射频（R.F.）信号与产生扩频中频（I.F.）信号的第一扩频本地振荡器（L.O.）混合。扩频（I.F.）被滤波并与第（II.F.）中扩展所需信号的第二扩频（L.O.）混合。第二（L.O.）以与第一（L.O.）相同的扩展功能驱动，因此期望的信号在伪信号不被正确地解扩。该电路在接收器和发射器中同样有用。一般来说，该电路在两个或多个信号相乘并且希望抑制寄生信号的任何系统中是有用的。

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