公开(公告)号：WO99066635A1

公开(公告)日：1999-12-23

申请号：PCT/GB1999/001667

申请日：1999-06-09

IPC: G01S7/03 ,  H03B1/00 ,  H03B5/18

CPC classification number: H03B5/1876 ,  G01S7/032 ,  H03B5/1852 ,  H03B2201/0208

Abstract: An oscillator circuit comprising first and second mutually electromagnetically couplable resonant circuits, the second circuit comprising a dielectric element and excitation means operable to produce a first frequency of oscillation, the first circuit comprising the dielectric element, excitation means including a two-terminal Schottky device, preferably a Schottky diode, operable, responsive to an applied signal, to vary the resonant frequency of the first resonant circuit, and thereby vary the frequency of oscillation of the oscillator circuit.

Abstract translation: 一种振荡器电路，包括第一和第二相互电磁耦合的谐振电路，所述第二电路包括电介质元件和可操作以产生第一振荡频率的激励装置，所述第一电路包括所述电介质元件，激励装置包括二端肖特基器件， 优选肖特基二极管，可响应于所施加的信号而操作，以改变第一谐振电路的谐振频率，从而改变振荡器电路的振荡频率。

公开(公告)号：WO99019981A1

公开(公告)日：1999-04-22

申请号：PCT/US1998/021324

申请日：1998-10-09

IPC: H03B1/00 ,  H03B5/02 ,  H03B5/12 ,  H03B5/18 ,  H03B7/06

CPC classification number: H03B5/1847 ,  H03B5/1209 ,  H03B5/1231 ,  H03B5/1243 ,  H03B7/06 ,  H03B2200/004 ,  H03B2200/0048 ,  H03B2200/0086 ,  H03B2201/0208

Abstract: A voltage controlled oscillator operable on two widely separated frequency bands, such as 900MHz and 1.8 GHz for example. The voltage controlled oscillator includes two negative resistance generators (32, 34) which share a common tunable tank circuit (26) and a common impedance matched combiner circuit (28) which provides the RF output (36). The VCO uses no pin diodes which could degrade Q and phase noise, and the VCO uses only one varactor (30) to tune both frequency bands which reduces costs. Separate negative resistance generators (32, 34) are used to provide optimum frequency selectivity within each frequency band.

Abstract translation: 一个压控振荡器可在两个广泛分离的频带上工作，例如900MHz和1.8GHz。 压控振荡器包括两个负电阻发生器（32,34），它们共用共同的可调谐振荡电路（26）和提供RF输出（36）的公共阻抗匹配组合器电路（28）。 VCO不使用可能降低Q和相位噪声的引脚二极管，VCO仅使用一个变容二极管（30）来调谐两个频带，从而降低成本。 单独的负电阻发生器（32,34）用于在每个频带内提供最佳的频率选择性。

公开(公告)号：WO99017438A1

公开(公告)日：1999-04-08

申请号：PCT/IB1998/001269

申请日：1998-08-19

IPC: H03B1/04 ,  H03B1/00 ,  H03B5/00 ,  H03B5/12 ,  H03K3/013 ,  H03K3/0231

CPC classification number: H03K3/0231 ,  H03B5/1215 ,  H03B5/1231 ,  H03B5/1243 ,  H03B2200/004 ,  H03B2200/0098 ,  H03B2201/0208 ,  H03B2202/082 ,  H03K3/013

Abstract: An oscillator is formed by a resonator (RES) coupled to an amplifier (AMP) via a coupling path (COP). In order to counter unwanted oscillations due to parasitic resonances in the coupling path (COP), the coupling path (COP) includes a series resistance (RS). To improve the noise-performance even more a series capacitance can be included in the coupling path (COP). Such a series capacitance will also effectively widen a frequency range over which the oscillator can be tuned.

Abstract translation: 振荡器由耦合到放大器（AMP）的耦合路径（COP）的谐振器（RES）形成。 为了防止由耦合路径（COP）中的寄生谐振引起的不希望的振荡，耦合路径（COP）包括串联电阻（RS）。 为了更好地提高噪声性能，串联电容可以包括在耦合路径（COP）中。 这样的串联电容也将有效地加宽振荡器可被调谐的频率范围。

公开(公告)号：WO9827643A3

公开(公告)日：1998-08-20

申请号：PCT/SE9702099

申请日：1997-12-15

Applicant: ERICSSON TELEFON AB L M ,  BLADH MATS

Inventor： BLADH MATS

IPC: H03B1/00 ,  H03B5/24 ,  H03B5/12 ,  H03J5/24

CPC classification number: H03B5/24 ,  H03B2201/0208 ,  H03B2201/0258

Abstract: In a differential oscillator means (535, 553, 521, 523, 549 and 551) are provided for making it possible to band switch the oscillator. This is obtained by means of cross connecting two transistors (501 and 503) and connecting inductors (509 and 511) to the transistors (501 and 503). The oscillator can be band switched by means of shortening a circuit comprising of two diodes (521 and 523). The switching time for the oscillator is very short since the oscillating circuit does not comprise any serially connected capacitors. In addition all frequency bands of the oscillator can be made impedance matched by means of adding an additional pair of varactor diodes (529 and 531).

公开(公告)号：WO1998009335A1

公开(公告)日：1998-03-05

申请号：PCT/US1997014846

申请日：1997-08-22

Applicant: THE WHITAKER CORPORATION

Inventor： THE WHITAKER CORPORATION ,  HENDERSON, Gregory ,  ZHANG, Xiangdong ,  GRISHAM, Ian

IPC: H01L29/737

CPC classification number: H01L29/7371 ,  H01L27/0605 ,  H01L29/0821 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1243 ,  H03B5/1293 ,  H03B2201/0208

Abstract: A bipolar junction device has a base region, an emitter region, and a collector region. The collector region has a nonuniform doping profile. A monolithic electronic integrated circuit comprises a bipolar transistor device having a collector base junction and a nonuniform doping profile in a collector region, and a diode having a doping profile that is substantially similar to the collector base junction of the transistor device. Advantageously, the electrical characteristics of the transistor device include relatively high gain and improved linearity. Advantageously, a bipolar junction device may also be monolithically fabricated with a varactor diode having a nonlinear capacitance as a function of applied voltage, to create a high performance voltage controlled oscillator.

Abstract translation: 双极结器件具有基极区域，发射极区域和集电极区域。 集电极区域具有不均匀的掺杂分布。 单片电子集成电路包括具有在集电极区域中的集电极基极结和不均匀掺杂分布的双极晶体管器件，以及具有基本上类似于晶体管器件的集电极基极结的掺杂分布的二极管。 有利地，晶体管器件的电特性包括相对高的增益和改善的线性度。 有利地，双极结器件还可以用具有作为施加电压的函数的非线性电容的变容二极管单片制造，以产生高性能压控振荡器。

公开(公告)号：WO1998000919A1

公开(公告)日：1998-01-08

申请号：PCT/US1997001408

申请日：1997-02-07

Applicant: HEWLETT-PACKARD COMPANY

Inventor： HEWLETT-PACKARD COMPANY ,  KARLQUIST, Richard, K.

IPC: H03L07/02

CPC classification number: H03L5/00 ,  H03B5/38 ,  H03B2201/0208 ,  H03B2201/031 ,  H03L7/02

Abstract: An apparatus and method are disclosed for improving the stability of the frequency of vibration of an oscillator signal produced by an oscillator circuit. In a preferred embodiment of the present invention, a quartz crystal resonator is one arm of a bridge which generates a bridge signal which varies in accordance with the vibrating frequency of the resonator. A synchronous demodulator responds to the bridge signal for producing an error signal. A control circuit receives the error signal and changes its reactance when the resonator is no longer vibrating at its unperturbed resonance frequency so that the vibration frequency of the resonator connected to the control circuit is returned to its resonant frequency. An automatic level control circuit is also included for controlling the drive level of the signal exciting the resonator.

Abstract translation: 公开了一种用于改善由振荡器电路产生的振荡器信号的振动频率的稳定性的装置和方法。 在本发明的优选实施例中，石英晶体谐振器是桥的一个臂，其产生根据谐振器的振动频率而变化的桥接信号。 同步解调器响应桥信号产生误差信号。 当谐振器在其不受干扰的谐振频率不再振动时，控制电路接收误差信号并改变其电抗，使得连接到控制电路的谐振器的振动频率返回到谐振频率。 还包括用于控制激励谐振器的信号的驱动电平的自动电平控制电路。

公开(公告)号：WO1995033307A1

公开(公告)日：1995-12-07

申请号：PCT/DE1995000636

申请日：1995-05-12

Applicant: SIEMENS AKTIENGESELLSCHAFT ,  HOHMANN, Henning

Inventor： SIEMENS AKTIENGESELLSCHAFT

IPC: H03J05/24

CPC classification number: H03B5/1231 ,  H03B5/1209 ,  H03B5/1243 ,  H03B2200/004 ,  H03B2200/0048 ,  H03B2200/0056 ,  H03B2200/0098 ,  H03B2201/0208

Abstract: The invention concerns a variable-frequency oscillator circuit, intended in particular for tuners, in which the feedback network (100) for the oscillator amplifier (1) includes the following: a series circuit made up of two resonant-circuit inductors (6, 7) and a resonant-circuit capacitor (8) in parallel with which the series circuit of another resonant-circuit capacitor (15) with adjustable capacitance (18, 20, 22) is connected. Connected to the junction point (30) between the two inductors (6, 7) are switching means (9, 17, 21) by means of which the first resonant-circuit capacitor (8) and the resonant-circuit inductor (7) connected to it can be short-circuited under the control of a switching signal (S). The feedback network (100) can thus be switched between two frequency bands and is symmetrical with respect to the high-frequency effect.

Abstract translation: 在一个频率可变振荡器装置，特别是用于调谐器，用于振荡放大器（1）的反馈网络（100）包括：，进一步的谐振电路电容器（15）的串联连接的具有两个谐振电路的电感器的串联连接（6,7）和一个谐振电路电容器（8） 可调电容（18，20，22）并联连接。 在两个电感的耦合节点（30）（6，7）被切换由所述第一谐振电路电容器，其连接装置（9，17，21）（8）和下一个切换信号（S）的控制其相关联的谐振电路（7）被短路 可以。 所述反馈网络（100）的特征在于可切换的两个频带之间，和对称相对于所述高频效应。

公开(公告)号：WO9420888A3

公开(公告)日：1994-09-15

申请号：PCT/US9402456

申请日：1994-03-09

Applicant: NAT SEMICONDUCTOR CORP

Inventor： FAGUE DANIEL E ,  HANSEN JENS ,  KARMEL CLAYTON R ,  MADSEN BENNY ,  TOFTGAARD JENS

IPC: H03L7/18 ,  H03B1/00 ,  H03B5/18 ,  H03C3/09 ,  H03L7/183 ,  H04B1/26 ,  H04B1/40 ,  H04B1/56 ,  H04L5/14 ,  H04L27/10 ,  H04L27/12 ,  H04L27/148 ,  H04L27/152 ,  G05B13/02 ,  G11B5/86 ,  G11B15/43 ,  H03L7/14 ,  H04L27/14

CPC classification number: H03C3/095 ,  H03B5/18 ,  H03B2201/0208 ,  H03L7/183 ,  H03L2207/06 ,  H04B1/408 ,  H04B1/56 ,  H04L5/143 ,  H04L5/1492 ,  H04L27/10 ,  H04L27/12 ,  H04L27/148 ,  H04L27/152

Abstract: A radio frequency (RF) transceiver includes a direct modulation transmitter and single down-conversion receiver for operation in a time-division-duplex (TDD) telecommunications environment. A single RF signal source, in the form of a phase-lock-loop (PLL), is used on a time-shared basis to provide both the carrier signal for the transmitter and the local oscillator (LO) signal for the receiver. In the transmitter, direct modulation is effected by modulating a voltage-controlled oscillator (VCO) in the PLL with a burst of the transmit data while opening the loop and holding the loop feedback tuning voltage constant. In the receiver, a self-adjusting comparator threshold is provided for automatically setting and adjusting a demodulated signal comparison threshold used in retrieving the data and data clock from the demodulated receive signal. The interface between the transmitter and receiver and the host controller provides the control signals needed for the time-sharing of the single RF signal source, the proper programming of the PLL for the different transmitter carrier and receiver LO frequencies, the PLL loop control for the direct modulation of the VCO, and the enablement, or powering down, of the transmitter and receiver sections to minimize transceiver power consumption.

公开(公告)号：WO1993003540A1

公开(公告)日：1993-02-18

申请号：PCT/US1992004782

申请日：1992-06-08

Applicant: MOTOROLA, INC.

Inventor： MOTOROLA, INC. ,  BLACK, Gregory, R. ,  HIETALA, Alexander, W. ,  AGAHI-KESHEH, Darioush

IPC: H03B05/12

CPC classification number: H03B5/1231 ,  H03B5/04 ,  H03B5/1209 ,  H03B5/1243 ,  H03B2200/002 ,  H03B2200/0022 ,  H03B2200/0034 ,  H03B2200/0036 ,  H03B2200/0062 ,  H03B2200/0098 ,  H03B2201/0208

Abstract: A voltage controlled oscillator and buffer amplifier circuit (211) is disclosed. The circuit is in a stacked configuration, whereby, the current from the power supply (361) is used by the buffer amplifier circuit and reused by the VCO circuit. The VCO circuit includes two transistors (333, 325). The transistors are set-up in a mirrored configuration, so that one of the transistors (325) controls the bias current in the other transistor (333). Both of the transistors are integrated into a semiconductor circuit die (365), thus matching the thermal characteristics of the transistors (333, 325) and improving control of the bias current. The die (365) is bonded to a ceramic substrate (601). The substrate (601) has connectivity paths for connecting components in the circuit die to components external to the circuit die. Some of the connectivity paths are made of a material and length to form passive circuit elements.

公开(公告)号：WO1990012450A1

公开(公告)日：1990-10-18

申请号：PCT/JP1990000419

申请日：1990-03-28

Applicant: KYOCERA CORPORATION ,  NAKAMOTO, Yasuhiro ,  UEMURA, Hiroki

Inventor： KYOCERA CORPORATION

IPC: H03B05/18

CPC classification number: H01P7/082 ,  H03B5/1847 ,  H03B2200/004 ,  H03B2201/014 ,  H03B2201/0208

Abstract: In order to reduce the size of a microstrip line (1) and to improve the Q-value, the length and width of the microstrip line (1) in the oscillator are greatly decreased. Further, the resonance frequency which would be increased by the reduction in the size of the microstrip line (1) is not increased by virtue of the addition of a capacitance (Cx) connected to one end of the microstrip line (1) to become close to the oscillation frequency of the oscillator. This small sized microstrip (1) renders the size of the oscillation circuit small and gives the characteristics which are equal to those of a dielectric coaxial resonance element.

Abstract translation: 为了减小微带线（1）的尺寸并提高Q值，振荡器中微带线（1）的长度和宽度大大降低。 此外，由于通过添加与微带线（1）的一端连接的电容（Cx）而使微带线（1）的尺寸减小而增加的共振频率不会增加，从而变得接近 到振荡器的振荡频率。 这种小尺寸的微带线（1）使得振荡电路的尺寸较小，并且给出与介电同轴共振元件相同的特性。