公开(公告)号：US5872489A

公开(公告)日：1999-02-16

申请号：US848137

申请日：1997-04-28

Applicant: Mau Chung F. Chang ,  Henry O. Marcy, 5th ,  Deepak Mehrotra ,  Kenneth D. Pedrotti ,  David R. Pehlke ,  Charles W. Seabury ,  Jun J. Yao ,  James L. Bartlett ,  J. L. Julian Tham

Inventor： Mau Chung F. Chang ,  Henry O. Marcy, 5th ,  Deepak Mehrotra ,  Kenneth D. Pedrotti ,  David R. Pehlke ,  Charles W. Seabury ,  Jun J. Yao ,  James L. Bartlett ,  J. L. Julian Tham

IPC: B81C3/00 ,  H01H59/00 ,  H01L27/06 ,  H03B1/00 ,  H03B5/12 ,  H03F1/26 ,  H03F1/56 ,  H03B5/08 ,  H03F3/04 ,  H03J5/24

CPC classification number: H03F1/565 ,  H01L27/0611 ,  H03B5/1256 ,  H03F1/26 ,  H03F3/195 ,  H01H59/0009 ,  H03B2201/012 ,  H03B2201/0208 ,  H03B2201/0216 ,  H03B2201/025 ,  H03F2200/294 ,  H03F2200/372 ,  H03J2200/10 ,  H03J2200/15

Abstract: An integrated, tunable inductance network features a number of fixed inductors fabricated on a common substrate along with a switching network made up of a number of micro-electromechanical (MEM) switches. The switches selectably interconnect the inductors to form an inductance network having a particular inductance value, which can be set with a high degree of precision when the inductors are configured appropriately. The preferred MEM switches introduce a very small amount of resistance, and the inductance network can thus have a high Q. The MEM switches and inductors can be integrated using common processing steps, reducing parasitic capacitance problems associated with wire bonds and prior art switches, increasing reliability, and reducing the space, weight and power requirements of prior art designs. The precisely tunable high-Q inductance network has wide applicability, such as in a resonant circuit which provides a narrow bandwidth frequency response which peaks at a specific predetermined frequency, making possible a highly selective performance low noise amplifier (LNA), or in an oscillator circuit so that a precise frequency of oscillation can be generated and changed as needed.

Abstract translation: 集成的可调电感网络具有在由公共基板上制造的多个固定电感器以及由多个微机电（MEM）开关组成的开关网络。 开关可选地互连电感器以形成具有特定电感值的电感网络，当电感器被适当地配置时，可以以高精度设置电感网络。 优选的MEM开关引入非常少量的电阻，因此电感网络可以具有高Q.MEM开关和电感器可以使用常规的处理步骤进行集成，减少与引线键合和现有技术开关相关联的寄生电容问题，增加 可靠性，并减少现有技术设计的空间，重量和功率要求。 精确可调谐的高Q电感网络具有广泛的适用性，例如在谐振电路中，其提供以特定预定频率峰值的窄带宽频率响应，使高选择性性能低噪声放大器（LNA）或振荡器 使得可以根据需要产生和改变振荡的精确频率。

公开(公告)号：US5870005A

公开(公告)日：1999-02-09

申请号：US888126

申请日：1997-07-03

Applicant: Shiu Hung Cheung

Inventor： Shiu Hung Cheung

IPC: H03B1/00 ,  H03B5/12 ,  H03C3/16 ,  H03C3/00 ,  H03B5/18

CPC classification number: H03C3/16 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1243 ,  H03B2201/0208

Abstract: A broadcast transmitter for generating low power modulated signals, especially for a wireless speaker system. A signal source such as a source of composite audio signals including left and right audio signals and a pilot signal are applied to a radio frequency signal oscillator. The radio frequency signal oscillator includes a bipolar transistor connected in a common base configuration, and having a stripline element as a frequency determinative component in the collector circuit of the bipolar transistor. The modulating signal is applied to the base of the bipolar transistor which modulates the collector junction capacitance of the transistor thereby frequency modulating the signal produced by the oscillator. Varactor tuning is provided for setting a nominal frequency of oscillation.

Abstract translation: 一种用于产生低功率调制信号的广播发射机，特别是用于无线扬声器系统。 诸如包括左和右音频信号和导频信号的复合音频信号的源的信号源被施加到射频信号振荡器。 射频信号振荡器包括以公共基极配置连接的双极晶体管，并且在双极晶体管的集电极电路中具有带状线元件作为频率确定分量。 调制信号被施加到双极晶体管的基极，该基极调制晶体管的集电极结电容，从而对由振荡器产生的信号进行频率调制。 提供变容器调谐用于设置标称振荡频率。

公开(公告)号：US5859573A

公开(公告)日：1999-01-12

申请号：US898875

申请日：1997-07-23

Applicant: Osmo Kukkonen

Inventor： Osmo Kukkonen

IPC: H03B1/00 ,  H03B5/12 ,  H03L5/00

CPC classification number: H03B5/1231 ,  H03B5/1203 ,  H03B5/1243 ,  H03B2200/0034 ,  H03B2200/004 ,  H03B2200/0062 ,  H03B2200/0066 ,  H03B2201/0208

Abstract: The invention concerns oscillator circuits, more particularly coupling arrangements between an oscillator and an amplifier stage following the oscillator. The solution according to the invention optimizes the intensity of the coupling between the oscillator and the following amplifier stage so that the desired output level of the oscillator circuit is gained but the oscillator is loaded as little as possible. In the system according to the invention, the impedance value of the circuit element between the oscillator and the amplifier stage has been arranged to be automatically adjustable so that it is always adjusted to its smallest value, on which the desired output level of the oscillator coupling can still be gained. The coupling can, for example, be formed by means of a capacitance diode, the bias voltage of which is adjusted according to the direct voltage detected at the output level of the amplifier stage.

Abstract translation: 本发明涉及振荡器电路，更具体地说是在振荡器之后的振荡器和放大器级之间的耦合布置。 根据本发明的解决方案优化了振荡器和随后的放大器级之间的耦合强度，使得振荡器电路的期望输出电平获得，但是振荡器被尽可能少地加载。 在根据本发明的系统中，振荡器和放大器级之间的电路元件的阻抗值已经被布置成可以自动调节，使得它总是被调整到其最小值，在该最小值上，振荡器耦合的期望输出电平 仍然可以获得。 例如，耦合可以通过电容二极管形成，该偏置电压根据在放大器级的输出电平处检测到的直流电压来调节。

公开(公告)号：US5834983A

公开(公告)日：1998-11-10

申请号：US940417

申请日：1997-09-30

Applicant: Thomas M. Higgins, Jr.

Inventor： Thomas M. Higgins, Jr.

IPC: H03B1/00 ,  H03B5/04 ,  H03B5/12 ,  H03L5/00

CPC classification number: H03L5/00 ,  H03B5/04 ,  H03B5/1203 ,  H03B5/1231 ,  H03B5/1243 ,  H03B2201/0208

Abstract: A bipolar negative resistance UHF oscillator having a voltage tunable resonator in its emitter circuit is operated at a fixed collector bias current and an RF detector is used as a convenient way to determine the RF current at which the oscillator is operating, by sensing the amplitude of the oscillator's output RF voltage across a constant load. An integrating error amplifier referenced to a desired detector output level responds to the actual detector output level to control the collector bias voltage for the oscillator and maintain the output of the oscillator at a fixed amplitude. Since the collector bias current is fixed, this keeps the operating point at fixed relation with respect to emitter cutoff. That relationship is chosen to be "just below" by initial selection of the constant collector bias current and the reference voltage used by the integrating error amplifier. The result is a VCO tunable over an octave with minimal phase noise, near maximum power output and immunity to temperature variations and shifts in oscillator device parameters.

Abstract translation: 在其发射电路中具有电压可调谐谐振器的双极性负电阻UHF振荡器以固定的集电极偏置电流工作，并且使用RF检测器作为确定振荡器工作的RF电流的方便方法，通过感测振荡器的振幅 振荡器的输出RF电压跨恒定负载。 参考所需检测器输出电平的积分误差放大器响应于实际检测器输出电平，以控制振荡器的集电极偏置电压，并将振荡器的输出保持在固定的幅度。 由于集电极偏置电流是固定的，所以这保持工作点相对于发射极截止点处于固定关系。 通过初始选择恒定集电极偏置电流和积分误差放大器使用的参考电压，将该关系选择为“正好在”以下。 结果是VCO可以在八度内调谐，具有最小的相位噪声，接近最大功率输出和对温度变化的免疫和振荡器器件参数的偏移。

公开(公告)号：US5764109A

公开(公告)日：1998-06-09

申请号：US669041

申请日：1996-06-24

Applicant: Osmo Kukkonen

Inventor： Osmo Kukkonen

IPC: H03B1/00 ,  H03B5/02 ,  H03B5/00 ,  H03L7/00

CPC classification number: H03B5/02 ,  H03B2201/0208

Abstract: The invention is related to an electrically tunable voltage-controlled oscillatory circuit, wherein the negative bias voltage (-Vcf) of a capacitance diode (5) needed for tuning the center frequency of the oscillatory circuit is generated on the basis of an electric oscillating signal (RFout) produced by the oscillatory circuit itself. Said oscillating signal is used for generating a negative voltage with a clamp/voltage multiplier type circuit (15) and it is adjusted to a desired value with an adjustment circuit (14), in which the values of the components (R2) can be permanently adjusted suitable in the tuning stage. Alternatively, the adjustment circuit (14) may include an active component (Q1) which can have an effect on the value of the negative bias voltage (-Vcf) during the use of the oscillatory circuit.

Abstract translation: 本发明涉及一种电可调电压控制振荡电路，其中基于电振荡信号产生用于调谐振荡电路的中心频率所需的电容二极管（5）的负偏置电压（-Vcf） （RFout）由振荡电路本身产生。 所述振荡信号用于利用钳位/电压倍增器类型电路（15）产生负电压，并且通过调整电路（14）将其调节到期望值，其中分量（R2）的值可以永久地 调整适合调音阶段。 或者，调节电路（14）可以包括在使用振荡电路期间可以对负偏置电压（-Vcf）的值产生影响的有源分量（Q1）。

公开(公告)号：US5745013A

公开(公告)日：1998-04-28

申请号：US756347

申请日：1996-11-26

Applicant: Henning Hohmann

Inventor： Henning Hohmann

IPC: H03B1/00 ,  H03B5/12 ,  H03J5/24 ,  H03B5/08

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

Abstract: A variable-frequency oscillator configuration, in particular for tuners, includes a feedback network for an oscillator amplifier. The feedback network contains a series circuit formed by two resonant circuit inductors and a resonant circuit capacitor, connected in parallel with a series circuit formed by a further resonant circuit capacitor and a variable capacitor. A switching device is connected to a coupling node between the two inductors, for short circuiting the first resonant circuit capacitor and the resonant circuit inductor connected thereto under the control of a switching signal. The feedback network can consequently be switched over between two frequency bands and is symmetrical with regard to the high-frequency effect.

Abstract translation: 特别是用于调谐器的可变频率振荡器配置包括用于振荡器放大器的反馈网络。 反馈网络包含由两个谐振电路电感器和谐振电路电容器构成的串联电路，该谐振电路电容器与由另外的谐振电路电容器和可变电容器形成的串联电路并联连接。 开关装置连接到两个电感器之间的耦合节点，用于在开关信号的控制下短路第一谐振电路电容器和与其连接的谐振电路电感器。 因此，反馈网络可以在两个频带之间切换，并且关于高频效应是对称的。

公开(公告)号：US5659587A

公开(公告)日：1997-08-19

申请号：US344267

申请日：1994-11-23

Applicant: David L. Knierim

Inventor： David L. Knierim

IPC: H03B1/00 ,  H03B23/00 ,  H03L7/08 ,  H03D3/24 ,  H04B15/00

CPC classification number: H03B23/00 ,  H03L7/08 ,  H03B2201/0208

Abstract: A phase-locked loop circuit comprises a VCO and a ramp generator. The ramp generator has an output connected to a control terminal of the VCO. A center frequency control loop is connected between a signal output terminal of the VCO and a first ramp control input of the ramp generator and a spread spectrum control loop is connected between the signal output terminal of the VCO and a second ramp control input of the ramp generator. The signals applied to the ramp control inputs of the ramp generator by the two control loops control respective characteristics of a periodic voltage ramp signal that is generated by the ramp generator at its signal output terminal.

Abstract translation: 锁相环电路包括VCO和斜坡发生器。 斜坡发生器具有连接到VCO的控制端的输出。 中心频率控制回路连接在VCO的信号输出端和斜坡发生器的第一斜坡控制输入端之间，扩频控制回路连接在VCO的信号输出端和斜坡的第二斜坡控制输入端 发电机。 通过两个控制回路施加到斜坡发生器的斜坡控制输入端的信号控制由斜坡发生器在其信号输出端产生的周期性电压斜坡信号的相应特性。

公开(公告)号：US5631609A

公开(公告)日：1997-05-20

申请号：US601087

申请日：1996-02-14

Applicant: Manabu Oka ,  Yukari Nakajima ,  Masayuki Kikushima ,  Kazuhiko Shimodaira

Inventor： Manabu Oka ,  Yukari Nakajima ,  Masayuki Kikushima ,  Kazuhiko Shimodaira

IPC: H01L21/60 ,  H01L23/50 ,  H03B1/00 ,  H03B5/12 ,  H03B5/32 ,  H03B5/36 ,  H03H9/02 ,  H03H9/05 ,  H01L41/08

CPC classification number: H03H9/0542 ,  H03B5/32 ,  H01L2224/45144 ,  H01L2224/48091 ,  H01L2224/48247 ,  H01L2224/49171 ,  H01L2924/01079 ,  H01L2924/14 ,  H01L2924/19041 ,  H03B2201/0208 ,  H03B2201/0291 ,  H03B5/368 ,  H03J2200/10 ,  Y10T29/42

Abstract: The invention provides a piezoelectric oscillator including a semiconductor integrated circuit and a piezoelectric resonator or a voltage-controlled oscillator including a semiconductor integrated circuit, a piezoelectric resonator and another electronic component. The piezoelectric resonator has a cross-sectional shape of an ellipse or a track. The semiconductor integrated circuit and the electronic component are molded with a resin into a very thin unit.

Abstract translation: 本发明提供一种包括半导体集成电路和压电谐振器的压电振荡器或包括半导体集成电路，压电谐振器和另一电子部件的压控振荡器。 压电谐振器具有椭圆形或轨道的横截面形状。 半导体集成电路和电子部件用树脂模制成非常薄的单元。

公开(公告)号：US5561398A

公开(公告)日：1996-10-01

申请号：US442564

申请日：1995-05-16

Applicant: Richard R. Rasmussen

Inventor： Richard R. Rasmussen

IPC: H03B1/00 ,  H03K3/0231 ,  H03K3/03 ,  H03K3/354 ,  H03L7/099 ,  H03L7/183 ,  H03B5/12

CPC classification number: H03K3/0231 ,  H03K3/03 ,  H03K3/0322 ,  H03K3/3545 ,  H03L7/0995 ,  H03B2201/0208 ,  H03L7/183

Abstract: A differential delay stage for a ring oscillator utilizes a resonant circuit formed by an inductor and a capacitor consisting of two varactor diodes connected back-to-back. A common cathode connection is connected to a variable voltage source to vary the capacitance of the diodes. Other forms of capacitors may replace the varactor diodes. Varying the capacitance value varies the resulting oscillation frequency of the ring oscillator. When several delay stages, each incorporating the resonant circuit, are connected together in a ring, the net effect is to allow only a signal at the resonant frequency of the resonant circuits to propagate around the ring. Other oscillator circuits employing a resonant circuit are disclosed.

Abstract translation: 用于环形振荡器的差分延迟级利用由电感器和由背靠背连接的两个变容二极管组成的电容器形成的谐振电路。 公共阴极连接连接到可变电压源以改变二极管的电容。 其他形式的电容器可以替代变容二极管。 改变电容值会改变环形振荡器的振荡频率。 当并入谐振电路的几个延迟级以环形连接在一起时，净效应只允许谐振电路的谐振频率处的信号在环周围传播。 公开了采用谐振电路的其它振荡电路。

公开(公告)号：US5515364A

公开(公告)日：1996-05-07

申请号：US309353

申请日：1994-09-20

Applicant: Daniel E. Fague

Inventor： Daniel E. Fague

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 ,  H04B1/54 ,  H04L27/04

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

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.

Abstract translation: 射频（RF）收发器包括用于在时分双工（TDD）电信环境中操作的直接调制发射机和单个下变频接收机。 在时间共享的基础上使用单相RF锁相环（PLL）形式的RF信号源，为接收机提供发射机的载波信号和本地振荡器（LO）信号。 在发射机中，通过在打开环路并保持环路反馈调谐电压恒定的情况下，通过发射数据的突发调制PLL中的压控振荡器（VCO）来实现直接调制。 在接收机中，提供自调整比较器阈值，用于自动设置和调整用于从解调的接收信号中检索数据和数据时钟的解调信号比较阈值。 发射机和接收机与主机控制器之间的接口提供单个RF信号源的时间分配所需的控制信号，针对不同发射机载波和接收机LO频率的PLL的适当编程，PLL环路控制 VCO的直接调制，以及发射机和接收机部分的启用或掉电，以最小化收发器功率消耗。