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1. 发明公开

EP1297616A1 A QUADRATURE MICROWAVE OSCILLATOR WITH ISOLATING AMPLIFIER 审中-公开
标题翻译：与隔离放大器求积微波振荡器
公开(公告)号：EP1297616A1
公开(公告)日：2003-04-02
申请号：EP01945288.7
申请日：2001-06-19
申请人： Koninklijke Philips Electronics N.V.
发明人： VAN DER TANG, Johan, D. , KASPERKOVITZ, Wolfdietrich, G
IPC分类号： H03B5/20 , H03B5/12
CPC分类号： H03B5/20 , H03B5/04 , H03B5/1209 , H03B5/1221 , H03B5/1231 , H03B5/1243 , H03B2200/0078
摘要： Described is a quadrature HF ring oscillator (1) comprising at least two cascaded filters (2, 3) each having a filter output (O1, O2) to be coupled to a quadrature load (ZI, ZQ), each of the two filters (2, 3) comprises an isolating amplifier (T5-T8) coupled between the filter output (O1, O2) and the quadrature load (ZI, ZQ). Advantageously the isolating amplifier forms a buffer between the oscillating core of the oscillator oscillating in the GHz range and the quadrature load, so that output frequency and amplitude are less influenced by the load.

2. 发明公开

EP1251633A1 Controllable oscillator 审中-公开
标题翻译： Regelbare Oszillator
公开(公告)号：EP1251633A1
公开(公告)日：2002-10-23
申请号：EP01201441.1
申请日：2001-04-20
申请人： Semiconductor Ideas to The Market (ItoM) BV
发明人： Kasperkovitz, Wolfdietrich Georg
IPC分类号： H03B5/20
CPC分类号： H03B5/20
摘要： Controllable oscillator circuit comprising a regenerative loop which incorporates a cascade circuit of first and second sections each having a controllable gain and a phase shift which is 90° at the oscillation frequency, the first and second sections comprising first and second transconductance amplifiers, respectively, outputs of which are coupled to third and fourth transconductance amplifiers, which are positively fed back from the output to the input, and via first and second capacitors to inputs of the second and first gain controlled amplifiers, said first and second capacitors being coupled in parallel to first and second load resistors, respectively, a tuning control current being supplied to control inputs of the first and second transconductance amplifiers, the output of at least one of the first and second transconductance amplifiers being coupled to an amplitude detection arrangement providing a gain control current for an automatic gain control to control inputs of the third and fourth transconductance amplifiers, said first and third transconductance amplifiers of the first section having a differential pair of first and second output terminals in common, said second and fourth transconductance amplifiers of the second section having a differential pair of third and fourth output terminals in common. In order to provide an oscillator capable of generating sinusoidal signals and tuneable at lower tuning frequencies and operating at lower supply voltages than the above conventional oscillator circuit, said first and second parallel RC filters are coupled between the first and second output terminals and the third and fourth output terminals, respectively, said first to fourth output terminals being respectively coupled to first to fourth DC current paths shunting at least a substantial part of said tuning and gain control currents to a supply voltage.
摘要翻译：可控振荡器电路包括再生回路，其包括第一和第二部分的级联电路，每个级联电路具有可调增益和在振荡频率下为90°的相移，第一和第二部分分别包括第一和第二跨导放大器，输出其耦合到第三和第四跨导放大器，其从输出端被正反馈到输入端，并且经由第一和第二电容器到第二和第一增益控制放大器的输入端，所述第一和第二电容器并联耦合到第一和第二负载电阻器，调谐控制电流被提供给第一和第二跨导放大器的控制输入，第一和第二跨导放大器中的至少一个的输出耦合到提供增益控制电流的幅度检测装置用于自动增益控制来控制输入第三和第四跨导放大器，所述第一部分的所述第一和第三跨导放大器具有共同的第一和第二输出端的差分对，所述第二部分的所述第二和第四跨导放大器具有第三和第四输出端的差分对，共同。为了提供能够产生正弦信号并能够在较低调谐频率下调谐并且以比上述常规振荡器电路更低的电源电压操作的振荡器，所述第一和第二并联RC滤波器耦合在第一和第二输出端子之间，第三和第二输出端子第四输出端子，所述第一至第四输出端子分别耦合到第一至第四直流电流路径，将至少大部分所述调谐和增益控制电流分流至电源电压。

3. 发明授权

EP0695479B1 A PHASE LOCK LOOP WITH ERROR MEASUREMENT AND CORRECTION IN ALTERNATE PERIODS 失效
标题翻译：相回路误差测量和减少交替期全
公开(公告)号：EP0695479B1
公开(公告)日：1997-08-13
申请号：EP94914220.2
申请日：1994-04-19
申请人： RCA THOMSON LICENSING CORPORATION
发明人： SAUER, Donald, Jon , RODDA, William , CAMPBELL, Edward, Richard, III
IPC分类号： H03L7/113
CPC分类号： H03B5/24 , H03B5/20 , H03B2200/0038 , H03B2200/005 , H03B2200/0058 , H03B2201/02 , H03B2201/025 , H03B2201/0266 , H03J2200/10 , H03L7/099 , H03L7/0991 , H03L7/113 , H03L7/14 , H04N5/126 , H04N7/122
摘要： In a phase-lock-loop circuit a frequency detector measures a frequency error between an oscillatory signal and a synchronizing signal in alternate horizontal line periods for generating a frequency error indicative signal. The frequency error indicative signal is applied to an oscillator for correcting the frequency error in other alternate horizontal line periods in a manner to prevent frequency error measurement and correction from occurring in the same horizontal line period.

4. 发明公开

EP0698314A1 AN OSCILLATOR WITH SWITCHED REACTIVE ELEMENTS 失效
标题翻译：，关联抗元件振荡器
公开(公告)号：EP0698314A1
公开(公告)日：1996-02-28
申请号：EP94915850.0
申请日：1994-04-19
申请人： RCA THOMSON LICENSING CORPORATION
发明人： SAUER, Donald, Jon , RODDA, William , CAMPBELL, Edward, Richard, III
IPC分类号： H03L7 , H03B5 , H03K3 , H04N5 , H04N7 , H03B1
CPC分类号： H03B5/24 , H03B5/20 , H03B2200/0038 , H03B2200/005 , H03B2200/0058 , H03B2201/02 , H03B2201/025 , H03B2201/0266 , H03J2200/10 , H03L7/099 , H03L7/0991 , H03L7/113 , H03L7/14 , H04N5/126 , H04N7/122
摘要： A phase-locked-loop circuit includes an oscillator having switched capacitors that are selectively coupled to a positive feedback path of the oscillator in a coarse frequency error correction mode of operation. When the frequency error is small, the circuit operates in a fine error correction mode without varying the selection of the switched reactive elements.

5. 发明公开

EP0540158A3 Apparatus for generating a sinusoidal output signal 失效
标题翻译：用于产生正弦输出信号的设备
公开(公告)号：EP0540158A3
公开(公告)日：1994-01-12
申请号：EP92308329.9
申请日：1992-09-14
申请人： ADVANCED MICRO DEVICES, INC.
发明人： Asghar, Safdar M. , Linz, Alfredo R.
IPC分类号： H03K3/80 , H03M1/86 , H04L27/12
CPC分类号： H04L27/12 , H03B5/20
摘要： An apparatus is disclosed for generating an output signal in response to an input signal having a variable input level. The output signal has an output frequency which varies to represent variations in the input level. The apparatus comprises a processing circuit for implementing a digital signal processing algorithm to generate control signals in response to the input signal, which control signals are representative of the variable input level, and an oscillator circuit for generating the output signal in response to the control signals. The control signals include a first control signal representing a first output frequency, a second control signal representing a second output frequency, and at least one intermediate control signal representing output frequencies intermediate the first and second output frequencies. The processing circuit generates at least one intermediate control signal whenever the output signal varies between the first and the second output frequencies which serves to "soften" the transition between the first and second output frequencies and reduces noise which usually is generated by such sudden changes in output frequency.
摘要翻译：公开了一种用于响应于具有可变输入电平的输入信号来生成输出信号的装置。输出信号具有变化的输出频率以表示输入电平的变化。该设备包括处理电路，用于实现数字信号处理算法以响应于输入信号产生控制信号，该控制信号代表可变输入电平，以及振荡器电路，用于响应于控制信号产生输出信号。控制信号包括表示第一输出频率的第一控制信号，表示第二输出频率的第二控制信号以及表示第一和第二输出频率中间的输出频率的至少一个中间控制信号。每当输出信号在第一和第二输出频率之间变化时，处理电路就生成至少一个中间控制信号，这用于“软化”第一和第二输出频率之间的过渡并且减少通常由这种突然变化输出频率。

6. 发明公开

EP0371549A1 Controllable quadrature oscillator 失效
标题翻译： Regelbarer Quadraturoszillator。
公开(公告)号：EP0371549A1
公开(公告)日：1990-06-06
申请号：EP89202963.8
申请日：1989-11-22
申请人： Philips Electronics N.V.
发明人： Kasperkovitz, Wolfdietrich Georg
IPC分类号： H03B5/20
CPC分类号： H03B5/20 , H03B5/24 , H03B27/00 , H03B2200/0062 , H03B2200/0066 , H03B2200/0078 , H03B2201/02
摘要： Controllable quadrature oscillator having a pair of oscillator outputs (01, 02) for supplying a pair of phase quadrature oscillator signals, and a cascade circuit of two quadrature sections (A, B), which circuit is incorporated in a regenerative loop, one (B) of the two quadrature sections being arranged between the two oscillator outputs and realising a 90 o phase shift in the regenerative state of the loop. In order to increase the frequency control range of such a controllable quadrature oscillator and to provide the possibility of integration, at least the said quadrature section comprises a cascade circuit of two stages (B1, B2) arranged in a signal path between an input terminal and an output terminal, one stage (B1) comprising a first amplifier having a low-pass characteristic and the other stage comprising a second amplifier (B2) having a low-pass characteristic, said second amplifier having a feedback path, and the gain of at least one of the two amplifiers being controllable for controlling the frequency of the pair of phase quadrature oscillator signals.
摘要翻译：具有用于提供一对相位正交振荡器信号的一对振荡器输出（01,02）的可控正交振荡器和两个正交部分（A，B）的级联电路，该电路并入再生回路中，一个（B ）被布置在两个振荡器输出之间并且在回路的再生状态下实现90°的相移。为了增加这种可控正交振荡器的频率控制范围并且提供集成的可能性，至少所述正交部分包括布置在输入端和输入端之间的信号路径中的两级（B1，B2）的级联电路输出端子，一级（B1），包括具有低通特性的第一放大器，另一级包括具有低通特性的第二放大器（B2），所述第二放大器具有反馈路径，并且在两个放大器中的至少一个可控制以控制该对相位正交振荡器信号的频率。

7. 发明公开

EP0335727A2 Signal processing apparatus 失效
标题翻译： Signalverarbeitungsgerät。
公开(公告)号：EP0335727A2
公开(公告)日：1989-10-04
申请号：EP89303182.3
申请日：1989-03-31
申请人： CANON KABUSHIKI KAISHA
发明人： Omata, Satoshi , Sakuranaga, Masanori , Shimizu, Hiroshi , Yamaguchi, Yoko
IPC分类号： G06K9/62
CPC分类号： G06K9/62 , H03B5/20 , H03B27/00 , H03L7/24
摘要： This invention discloses a signal processing apparatus which has N nonlinear oscillators, a circuit for coupling the N nonlinear oscillators in a loop-like form, a circuit for shifting the phase of the output signal of a particular nonlinear oscillator from among the N nonlinear oscillators in correspondence with an input signal, and a circuit for outputting the output of at least one oscillator of the N nonlinear oscillators as the output of the signal processing apparatus. This apparatus has capability to effect analog conversion, modulation or storage of an input signal.
摘要翻译：本发明公开了一种信号处理装置，其具有N个非线性振荡器，用于以环状形式耦合N个非线性振荡器的电路，用于将N个非线性振荡器的输出信号的相位从N个非线性振荡器中移位的电路与输入信号的对应关系，以及用于输出N个非线性振荡器的至少一个振荡器的输出作为信号处理装置的输出的电路。该装置具有实现输入信号的模拟转换，调制或存储的能力。

8. 发明公开

EP0324246A1 Inductor-less mmic oscillator 失效
标题翻译： Spulenloser MMIC-Oszillator。
公开(公告)号：EP0324246A1
公开(公告)日：1989-07-19
申请号：EP88311892.9
申请日：1988-12-15
申请人： ROCKWELL INTERNATIONAL CORPORATION
发明人： Weber, Robert J.
IPC分类号： H03B5/20
CPC分类号： H03B5/24 , H03B5/20 , H03B27/00 , H03B2200/0028
摘要： When an oscillator is required to operate at high frequencies, there may be more than one frequency that can provide the required 360° phase shift in the feedback signal, and thus more than one oscillating frequency. To avoid the use of inductors in assuring (for oscillators having an odd number of stages) that there is only a single range of frequencies having the desired phase shift in the feedback loop, the phase shift of each stage is made frequency dependent. In a three-stage oscillator, this is accomplished by designing the circuit to have 120° of phase shift in each stage at the desired oscillatory RF frequency, but 180° of phase shift at near DC frequency. Each stage includes an FET amplifier (12, 18; 14, 22; 16, 30) in which the parasitic capacitance causes the phase shift to vary from 180° to 90° as the frequency varies from DC to the desired high frequency and a capacitor-resistor filter (20, 44; 26, 28; 32,34) in which the phase shift varies from 0° to 30° as the frequency varies from DC to the desired high frequency.
摘要翻译：当需要振荡器在高频下工作时，可能会有多个频率，可以在反馈信号中提供所需的360度相移，从而提供多于一个的振荡频率。为了避免使用电感器确保（对于具有奇数级的振荡器），在反馈回路中仅存在具有所需相移的单个频率范围，则使每个级的相移频率相关。在三级振荡器中，这是通过将电路设计成在期望的振荡RF频率下在每个阶段中具有120°的相移，而在近DC频率处具有180°的相移来实现的。每个级包括FET放大器（12,18; 14,22; 16,30），其中寄生电容使得相位从180度变化到90度，随着频率从DC变化到期望的高频，电容器 - 电阻滤波器（20,44; 26,28; 32,34），其中随着频率从DC变化到期望的高频率，相移从0°变化到30°。

9. 发明公开

EP0142586A1 A filter arrangement with active elements 失效
标题翻译： Filteranordnung mit aktiven Elementen。
公开(公告)号：EP0142586A1
公开(公告)日：1985-05-29
申请号：EP83307036.0
申请日：1983-11-17
申请人： BUDAPESTI RADIOTECHNIKAI GYAR
发明人： Kovacs, Sandor , Fozo, Arpad
IPC分类号： H03H11/12 , H03B5/20
CPC分类号： H03H11/1252 , H03B5/20 , H03B2200/0064 , H03B2200/0066
摘要： An active filter arrangement particularly for the reception and transmission of signal sequences, which comprises three feed back operational amplifiers (1,2,3) connected in a closed loop chain. The feedback impedance of one of the amplifiers (1) comprises an ohmical and a capacitive member connected in parallel, while another (2) is fed back by a capacitive impedance. At least one of the capacitive branches includes an RC member. The quality factor can be changed by the adjustment of the ohmical branch while the frequency can be changed by adjusting the coupling between the operational amplifiers within wide ranges. One of the operational amplifiers comprises a feedback circuit (7) controlled by a pulse width modulator (8) by means of which an oscillator mode of operation can be set and the frequency of oscillation will be that of the filter. The oscillator amplitude can be controlled by means of the pulse width modulator (8).
The adjustment of the frequency and/or the quality factor can be carried out by means of an attenuator comprising a series chain of resistors (Ro to Rn) coupled to an operational amplifier (17) which arrangement is capable of realizing virtual ground potential with discretely changable location in the chain.
The active filter has a preferable field of application in a circuit arrangement for generating and receiving signal sequences in radio transmitter-receiver systems.
摘要翻译：一种有源滤波器装置，特别用于信号序列的接收和发送，其包括连接在闭环链路中的三个反馈运算放大器（1,2,3）。放大器（1）中的一个的反馈阻抗包括并联连接的欧姆和电容部件，而另一个（2）由电容性阻抗反馈。电容分支中的至少一个包括RC构件。可以通过调整欧姆支路来改变质量因子，同时可以通过调节宽范围内的运算放大器之间的耦合来改变频率。运算放大器之一包括由脉冲宽度调制器（8）控制的反馈电路（7），通过该电路可以设置振荡器操作模式，并且振荡频率将是滤波器的频率。振荡器振幅可以通过脉冲宽度调制器（8）来控制。可以通过包括耦合到运算放大器（17）的一系列电阻器（R0至Rn）的衰减器来执行频率和/或品质因子的调整，该布置能够离散地实现虚拟地电势在链条中可更换的位置。有源滤波器在用于在无线电发射机 - 接收机系统中生成和接收信号序列的电路装置中具有优选的应用领域。

10. 发明授权

EP0034064B1 Adjustable and selective electrical filters and methods of tuning them 失效
标题翻译：可调节和选择性电气滤波器及其调谐方法
公开(公告)号：EP0034064B1
公开(公告)日：1984-06-13
申请号：EP81300523.8
申请日：1981-02-09
申请人： DECCA LIMITED
发明人： Holyman, Brian Thomas , Baty, Charlton Robert
IPC分类号： H03J3/18 , H03J7/08 , H03B5/20 , H03H11/12
CPC分类号： H03J7/08 , H03B5/20 , H03B2200/004 , H03H11/12

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