公开(公告)号：WO1994003971A1

公开(公告)日：1994-02-17

申请号：PCT/EP1993001952

申请日：1993-07-22

Applicant: SIEMENS TELECOMUNICAZIONI S.P.A. ,  BUOLI, Carlo ,  MORA, Giovanni ,  TURILLO, Tommaso

Inventor： SIEMENS TELECOMUNICAZIONI S.P.A.

IPC: H03B05/18

CPC classification number: H03L7/04 ,  H03B5/18

Abstract: The phase noise characteristic of a microwave oscillator comprising a cavity (2) excited by an active element (1) is improved by introducing a frequency discriminator embodied by using the same oscillator cavity. The waves transmitted and reflected by the cavity (2) are measured, combined and detected by a pair of low noise diodes (7, 8) and the signals obtained are compared to produce a control signal for a phase shifter (10) placed between the active device (1) and the cavity (2). The oscillator is preferably of the type with dielectric resonator.

Abstract translation: 包括由有源元件（1）激发的空腔（2）的微波振荡器的相位噪声特性通过引入通过使用相同的振荡器腔体而体现的鉴频器来改进。 由空腔（2）传输和反射的波被一对低噪声二极管（7,8）组合并检测，并且所获得的信号被比较以产生一个控制信号用于移相器（10） 有源器件（1）和腔（2）。 振荡器优选为具有介质谐振器的类型。

公开(公告)号：WO1994000912A1

公开(公告)日：1994-01-06

申请号：PCT/EP1993001577

申请日：1993-06-21

Applicant: DEUTSCHE THOMSON-BRANDT GMBH ,  MAIER, Gerhard ,  CLEMENS, Klaus

Inventor： DEUTSCHE THOMSON-BRANDT GMBH

IPC: H03B05/18

CPC classification number: H03B5/1852 ,  H03B5/1203 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1293 ,  H03B2200/0008 ,  H03B2200/004 ,  H03B2200/0056 ,  H03B2200/0088 ,  H03B2201/0208

Abstract: The aim of the invention is to provide an oscillator circuit which generates high-frequency output signals and can be controlled by a d.c. signal. The invention calls for a first stage (10), which oscillates at substantially the same frequency, to be connected in series with a second stage (20) which includes a variable-capacitance diode. The preferred use of the invention is in double converters for processing TV signals.

公开(公告)号：WO1987000707A1

公开(公告)日：1987-01-29

申请号：PCT/JP1986000390

申请日：1986-07-23

Applicant: NEC CORPORATION ,  NAGATA, Eiji

Inventor： NEC CORPORATION

IPC: H03B05/18

CPC classification number: H03B5/1876 ,  H03B5/1852 ,  H03B19/14 ,  H03B2200/007

Abstract: In a dielectric resonator controlled oscillator with frequency multiplication, a line (12) has an open end and another end connected to a gate electrode of an FET (11) with a dielectric resonator (13) electromagnetically coupled to the line at a location along a total length of the line. The total length is selected to make a combination of the line and the dielectric resonator have a substantially zero impedance for a higher harmonic frequency when seen from the gate electrode. More specifically, the total length is selected so as to be equal to about three quarters of a wavelength which a frequency multiplied oscillation, such as a frequency doubled oscillation, has in the line. The location is selected so as to optimize the oscillator for a fundamental oscillation of a fundamental frequency determined by the dielectric resonator.

Abstract translation: 在具有倍频的介质谐振器控制振荡器中，线（12）具有开口端，另一端连接到具有电介质谐振器（13）的FET（11）的栅电极，电介质谐振器（13）沿着沿着 线的总长度。 总长度被选择为使得当从栅电极观察时，线和介质谐振器的组合对于较高谐波频率具有基本零阻抗。 更具体地，总长度被选择为等于频率倍增振荡（例如倍频振荡）的波长的大约四分之三。 选择该位置以优化用于由介质谐振器确定的基频的基本振荡的振荡器。

公开(公告)号：WO1996027234A1

公开(公告)日：1996-09-06

申请号：PCT/US1996002284

申请日：1996-02-27

Applicant: ERICSSON INC.

Inventor： ERICSSON INC. ,  ZHOU, Xue-Song

IPC: H03B05/18

CPC classification number: H03B5/1847 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1243 ,  H03B2202/03

Abstract: A high-power, low-noise voltage-controlled oscillator (VCO) eliminates the drive-stage amplifier and costly surface-acoustic wave (SAW) inter-stage filter in a transmitter such as a cellular radiotelephone. The VCO includes a resonant circuit, an active part connected to the resonant circuit, and a buffer amplifier, connected to the active part, for isolating the VCO from a load connected to the buffer amplifier. The active part includes at least one transistor in a colpitts configuration; capacitances connected in parallel with junction capacitances of the transistor, each capacitance having a value that is greater than a value of the respective junction capacitance with which it is connected in parallel; and a resistance for providing negative feedback at low frequencies. A second resistance may be provided for reducing the gain of the active part when oscillation starts. The buffer amplifier is a linear amplifier including a transistor, and the active part and the buffer amplifier may be connected by a capacitance for reducing coupling between the active part and the buffer amplifier.

Abstract translation: 高功率，低噪声压控振荡器（VCO）消除了诸如蜂窝无线电话之类的发射机中的驱动级放大器和昂贵的表面声波（SAW）级间滤波器。 VCO包括谐振电路，连接到谐振电路的有源部分和连接到有源部分的缓冲放大器，用于将VCO与连接到缓冲放大器的负载隔离。 有源部分包括至少一个晶体管， 电容与晶体管的结电容并联连接，每个电容的值大于并联连接的各个结电容的值; 以及在低频下提供负反馈的电阻。 可以提供第二电阻用于在振荡开始时降低有效部分的增益。 缓冲放大器是包括晶体管的线性放大器，并且有源部分和缓冲放大器可以通过用于减少有源部分和缓冲放大器之间的耦合的电容来连接。

公开(公告)号：WO1996023351A1

公开(公告)日：1996-08-01

申请号：PCT/US1996000376

申请日：1996-01-11

Applicant: MOTOROLA INC.

Inventor： MOTOROLA INC. ,  AVANIC, Branko ,  YEH, Peter, J. ,  OOI, Leng, Hock

IPC: H03B05/18

CPC classification number: H03B5/1847 ,  H03B2200/0024 ,  H03B2200/004 ,  H03B2200/0086 ,  H03B2200/0088 ,  H03B2201/0208 ,  H03B2202/025 ,  H03B2202/05

Abstract: An oscillator (200) with improved sideband noise is disclosed. This improvement is accomplished without affecting the Q or the output power of the oscillator (200). The improvement is realized by increasing the rate of change of reactance over frequency. The increase in the rate of change is realized by placing two transmission lines (208, 210) in close proximity of each other. This increase assures oscillation while minimizing the sideband noise, and providing maximum bandwidth.

Abstract translation: 公开了具有改进的边带噪声的振荡器（200）。 这种改进是在不影响振荡器（200）的Q或输出功率的情况下完成的。 通过提高频率上的电抗变化率来实现改进。 通过将两个传输线（208,210）彼此靠近放置来实现变化率的增加。 这种增加确保振荡，同时最小化边带噪声，并提供最大带宽。

公开(公告)号：WO1996016472A1

公开(公告)日：1996-05-30

申请号：PCT/US1995015186

申请日：1995-11-20

Applicant: ANADIGICS, INC.

Inventor： ANADIGICS, INC. ,  BAYRUNS, John, T. ,  WAUGH, Raymond, M. ,  WALLACE, Phillip, W. ,  BAYRUNS, Robert, J. ,  DENIGRIS, Thomas, D.

IPC: H03B05/18

CPC classification number: H03J5/24 ,  H03B5/1876 ,  H03B25/00 ,  H03B2201/0275 ,  H04B1/28

Abstract: A multiple-frequency local oscillator (200) for providing an LO signal at one of a multiple of predetermined resonant frequencies associated with a number of resonators (210). It includes a number of LO input ports (205) for coupling to the plurality of resonators (210). The local oscillator is controlled to selectively provide at its LO output port (215) an output LO signal at any one of the resonant frequencies.

Abstract translation: 一种用于以与多个谐振器（210）相关联的多个预定谐振频率中的一个提供LO信号的多频本地振荡器（200）。 它包括用于耦合到多个谐振器（210）的多个LO输入端口（205）。 控制本地振荡器以在其LO输出端口（215）选择性地在任何谐振频率处提供输出LO信号。

公开(公告)号：WO1995026073A1

公开(公告)日：1995-09-28

申请号：PCT/DE1995000325

申请日：1995-03-08

Applicant: SIEMENS AKTIENGESELLSCHAFT ,  HEIDE, Patric

Inventor： SIEMENS AKTIENGESELLSCHAFT

IPC: H03B05/18

CPC classification number: H03B5/187 ,  H01P7/10 ,  H03B5/1847

Abstract: To improve the phase noise and temperature stability of a dielectric resonator oscillator, the cylindrical dielectric resonator defining the vibration frequency is not, as in prior art devices, laid on an end face but is fitted upright on its jacket surface on the substrate and connected to the h.f. lines in a higher mode (TMxxx mode) rather than in the fundamental mode (TE01 delta mode).

Abstract translation: 为了提高相位噪声和介质谐振器的振荡器的温度稳定性，在决定性的振荡频率的圆柱形介质谐振器是不是如以常规方式，通常，位于其端面上的，但安装在其外表面上放置在基板上，而不是（在基波模 TE01增量模式），但（在更高模式TMxxx模式）耦合到所述RF线。

公开(公告)号：WO1992006534A1

公开(公告)日：1992-04-16

申请号：PCT/US1991007281

申请日：1991-10-04

Applicant: WILTRON COMPANY

Inventor： WILTRON COMPANY ,  GRACE, Martin, I. ,  SIMMONS, Richard, E.

IPC: H03B05/18

CPC classification number: H03B5/1894 ,  H03B5/1847 ,  H03B5/1852 ,  H03B5/1888 ,  H03B2201/0241 ,  H03B2201/0258 ,  H03B2201/035

Abstract: YIG oscillator apparatus (230) having both an FET-based YIG oscillator circuit (10) and a bipolar transistor based YIG oscillator circuit (110) inside a single magnetic structure (200). Both YIG spheres (12, 112) are disposed in the single air gap (220) of the magnetic structure, which is defined by a pole piece (210) which is tapered to an elongated pole surface (214) which is only slightly larger than necessary to cover both YIG spheres.

Abstract translation: YIG振荡器装置（230）在单个磁性结构（200）内具有基于FET的YIG振荡电路（10）和双极晶体管的YIG振荡电路（110）。 两个YIG球体（12,112）都设置在磁性结构的单个空气间隙（220）中，磁极结构的一个气隙（220）由极片（210）限定，该极片（210）与细长的极表面（214）成锥形， 必须覆盖两个YIG球体。

公开(公告)号：WO1987000993A1

公开(公告)日：1987-02-12

申请号：PCT/JP1986000359

申请日：1986-07-14

Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. ,  USUI, Akira ,  KUBO, Kazuhiko ,  NAGAI, Hiroyuki

Inventor： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.

IPC: H03B05/18

CPC classification number: H03B5/1847 ,  H03B2200/0034 ,  H03B2200/004 ,  H03B2201/0208

Abstract: A local oscillation circuit used as a TV tuner circuit, a CATV converter or an indoor unit of a satellite broadcast receiver, wherein the collector of an oscillation transistor (Q1) is grounded in an a-c manner, one end of a series resonance circuit consisting of a variable-capacity diode (D1) and a resonator (L1) is connected to the base of the transistor (Q1), the other end of the series resonance circuit is grounded in an a-c manner, the emitter of the oscillation transistor (Q1) is connected to the collector of an amplifier transistor (Q2) via means (L2, R3) which removes or reduces the a-c components and which permits d-c components to pass through, oscillation signals taken out of the emitter of the oscillation transistor (Q1) are supplied to the base of the amplifier transistor (Q2), and local oscillation signals are taken out of the collector of the amplifier transistor (Q2). Any change in the current of the oscillation transistor (Q1) is suppressed to improve the reliability of the circuit irrespective of the change in the d-c voltage applied to the cathode of the variable-capacity diode (D1).

Abstract translation: 用作TV调谐器电路的本地振荡电路，卫星广播接收机的CATV转换器或室内单元，其中振荡晶体管（Q1）的集电极以交流方式接地，串联谐振电路的一端由 可变容量二极管（D1）和谐振器（L1）连接到晶体管（Q1）的基极，串联谐振电路的另一端以交流方式接地，振荡晶体管（Q1）的发射极 通过去除或减少交流分量并允许直流分量通过的装置（L2，R3）连接到放大器晶体管（Q2）的集电极，从振荡晶体管（Q1）的发射极中取出的振荡信号是 提供给放大器晶体管（Q2）的基极，并且将本地振荡信号从放大器晶体管（Q2）的集电极中取出。 不管施加到可变容量二极管（D1）的阴极的d-c电压的变化如何，抑制振荡晶体管（Q1）的电流的任何变化来提高电路的可靠性。