公开(公告)号：US3639859A

公开(公告)日：1972-02-01

申请号：US3639859D

申请日：1969-08-28

Applicant: PHILIPS CORP

Inventor： ZWLISEN WILHELMUS ANTONIUS JOS

IPC: H03B5/00 ,  G08C19/12 ,  H03B1/00 ,  H03B5/20 ,  H03B5/24 ,  H03B27/00

CPC classification number: H03B5/24 ,  H03B27/00 ,  H03B2200/0078 ,  H03B2201/02 ,  Y10S148/103

Abstract: An oscillator having a first phase-shifting network, an inverting amplifier and a second phase-shifting network comprising two impedances; one of the impedances is externally adjustable and determines the frequency of the oscillator signal. A total phase shift of 180* is achieved by means of the first phase-shifting network which provides a phase shift of substantially 90* in a frequency independent manner and by the second phase-shifting network which provides an additional phase shift of substantially 90* in a frequency-dependent manner.

Abstract translation: 具有第一相移网络，反相放大器和包括两个阻抗的第二相移网络的振荡器; 其中一个阻抗可由外部调节，并确定振荡器信号的频率。 通过第一移相网络实现180°的总相移，该网络以频率独立的方式提供大致90°的相移，并且通过第二移相网络提供基本上90°的附加相移 以频率依赖的方式。

公开(公告)号：US3495187A

公开(公告)日：1970-02-10

申请号：US3495187D

申请日：1968-04-10

Applicant: INT STANDARD ELECTRIC CORP

Inventor： JEZIERSKI EUGENIUSZ CZESLAW JA ,  MCLELLAN JOHN

IPC: H03B1/00 ,  H03B5/36 ,  H03B5/30

CPC classification number: H03B5/36 ,  H03B2200/0026 ,  H03B2200/0048 ,  H03B2200/0056 ,  H03B2200/007 ,  H03B2201/02 ,  H03B2201/0258 ,  H03B2201/0283

公开(公告)号：KR1020130050975A

公开(公告)日：2013-05-16

申请号：KR1020137006637

申请日：2011-08-31

Applicant: 자일링크스 인코포레이티드

Inventor： 우파댜야야파라그 ,  키리브바실리

IPC: H03B5/12

CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B5/124 ,  H03B5/1262 ,  H03B5/1265 ,  H03B2201/02 ,  H03B2201/0208 ,  H03B2201/0266

Abstract: 조정 가능한 공진 회로(102)는 제1 커패시터의 제1 전극과 제2 전극 및 제2 커패시터의 제1 전극과 제2 전극 사이에 정합 커패시턴스를 제공하는 제1 커패시터들(104, 108, 216, 228, 232) 및 제2 커패시터들(106, 110, 218, 230, 234)를 포함한다. 딥 웰 장치는 기판(324)의 제2 웰(322, 328) 내에 배치된 제1 웰(320, 326)을 포함한다. 제1 커패시터 및 제2 커패시터 각각은 제1 웰 상에 배치될 수 있다. 제1 트랜지스터의 2개의 채널 전극(120, 130)은 제1 커패시터의 제2 전극(114, 304) 및 제2 커패시터의 제2 전극(118, 308)에 각각 결합된다. 제2 트랜지스터의 2개의 채널 전극(122, 132)은 제1 커패시터의 제2 전극 및 그라운드에 각각 결합된다. 제3 트랜지스터의 2개의 채널 전극(124, 134)은 제2 커패시터의 제2 전극 및 그라운드에 각각 결합된다. 제1 트랜지스터, 제2 트랜지스터, 및 제3 트랜지스터의 게이트 전극들(226, 314)은 조정 신호(126, 136)에 응답할 수 있고, 인덕터(144, 202)는 제1 커패시터 및 제2 커패시터의 제1 전극들(112, 116, 302, 306) 사이에 결합될 수 있다.

公开(公告)号：KR100158613B1

公开(公告)日：1999-03-20

申请号：KR1019950026633

申请日：1995-08-25

Applicant: 삼성전자주식회사

Inventor： 연상흠

IPC: H03C3/00

CPC classification number: H03C3/02 ,  H03B2200/0026 ,  H03B2200/0058 ,  H03B2200/008 ,  H03B2201/02 ,  H03C2200/005

Abstract: 본 발명은 에프엠 변조기에 관한 것으로, 변환하고자 하는 전압(Vin), 기준 전압(Vref) 및 중심 주파수와 변조도를 조정하기 위한 조정 전압(V
CT )을 입력받아, 입력된 조정 전압을 통해서 중심 주파수와 변조도를 동시에 조정할 수 있는 제어 전류(iCT)를 발생시켜 출력하는 전압-전류 변환 수단과, 상기 전압-전류변환 수단으로부터 출력되는 제어 전류를 입력 받아, 변조된 주파수를 발진하는 주파수 변조 수단로 구성되었으며, 중심 주파수를 조정하고 에프엠 변조량을 조정하는 데에 있어서, 하나의 조정 전압(V
CT )에 의해서 단지 중심 주파수를 조정하는 것만으로 변조도도 동시에 조정할 수 있도록 한 에프엠 변조기에 관한 것이다.

公开(公告)号：KR1019940007972B1

公开(公告)日：1994-08-31

申请号：KR1019920000161

申请日：1992-01-08

Applicant: 삼성전자주식회사

Inventor： 이준성

IPC: H03B5/00

CPC classification number: H03H11/46 ,  H03B1/04 ,  H03B5/20 ,  H03B5/24 ,  H03B7/06 ,  H03B27/00 ,  H03B2200/0058 ,  H03B2200/0062 ,  H03B2200/0092 ,  H03B2201/02 ,  H03H11/52

Abstract: The circuit improves frequency stability, and extends a variable frequency range by a negative feedback and negative resistance circuit. The circuit includes a 1st condenser (C1) and negative resistance circuit, a 2nd condenser (C2) which connects a 2nd gm amplifier output terminal to ground. The negative resistance circuit (12) between 1st gm amplifier (10) and 2nd gm amplifier (11), improves frequency stability, adjusts a selectivity, and specifies oscillating conditions. The gm amplifier varies a gm value by voltage control signal (Vctl), and varies an oscillating frequency, and specifies an oscillating frequency.

Abstract translation: 该电路提高了频率稳定性，并通过负反馈和负电阻电路扩展了可变频率范围。 该电路包括第一电容器（C1）和负电阻电路，第二电容器（C2），其将第二gm放大器输出端子连接到地。 第一gm放大器（10）和第二gm放大器（11）之间的负电阻电路（12）提高了频率稳定性，调整选择性，并规定了振荡条件。 gm放大器通过电压控制信号（Vctl）变化gm值，并改变振荡频率，并指定振荡频率。

公开(公告)号：US11757405B2

公开(公告)日：2023-09-12

申请号：US17733158

申请日：2022-04-29

Applicant: Huawei Technologies Co., Ltd.

Inventor： Yunfang Zhou

IPC: H03B5/08 ,  H03B5/32

CPC classification number: H03B5/08 ,  H03B5/323 ,  H03B2201/02

Abstract: An oscillator circuit includes an amplifier including a first transconductance amplifier and a second transconductance amplifier; and a resonator including a capacitor element and an inductor element. The capacitor element includes a first capacitor and a second capacitor, the inductor element includes a tapped inductor, the tapped inductor includes a first segment of inductor and a second segment of inductor, and the first segment of inductor and the second segment of inductor are coupled using the first capacitor. The first segment of inductor includes a first terminal and a second terminal coupled to an input terminal and an output terminal of the first transconductance amplifier respectively. The second segment of inductor includes a third terminal and a fourth terminal coupled to an input terminal and an output terminal of the second transconductance amplifier, respectively.

公开(公告)号：US20140125422A1

公开(公告)日：2014-05-08

申请号：US14072807

申请日：2013-11-06

Applicant: NIHON DEMPA KOGYO CO., LTD.

Inventor： MITSUAKI KOYAMA ,  TAKERU MUTOH ,  MANABU ISHIKAWA

IPC: H03B5/36

CPC classification number: H03B5/362 ,  H03B5/326 ,  H03B2201/02

Abstract: A self-oscillation circuit includes an oscillating unit, an amplifying unit, and a resonator. The oscillating unit is configured to self-oscillate. The amplifying unit is configured to amplify a frequency signal oscillated at the oscillating unit and to feed back the amplified frequency signal to the oscillating unit. The resonator is disposed in an oscillation loop that includes the oscillating unit and the amplifying unit. The resonator has a resonant frequency near an oscillation frequency of the oscillating unit and has a higher Q-value than a Q-value of the oscillating unit.

Abstract translation: 自振荡电路包括振荡单元，放大单元和谐振器。 振荡单元被配置为自振荡。 放大单元被配置为放大在振荡单元处振荡的频率信号，并将放大的频率信号反馈到振荡单元。 谐振器设置在包括振荡单元和放大单元的振荡环路中。 谐振器具有接近振荡单元的振荡频率的谐振频率，并且具有比振荡单元的Q值更高的Q值。

公开(公告)号：US20120092081A1

公开(公告)日：2012-04-19

申请号：US12906017

申请日：2010-10-15

Applicant: Parag Upadhyaya ,  Vassili Kireev

Inventor： Parag Upadhyaya ,  Vassili Kireev

IPC: H03B5/12

CPC classification number: H03B5/1228 ,  H03B5/1212 ,  H03B5/124 ,  H03B5/1262 ,  H03B5/1265 ,  H03B2201/02 ,  H03B2201/0208 ,  H03B2201/0266

Abstract: A tunable resonant circuit includes first and second capacitors that provide a matched capacitance between first and second electrodes of the first and second capacitors. A deep-well arrangement includes a first well disposed within a second well in a substrate. The first and second capacitors are each disposed on the first well. Two channel electrodes of a first transistor are respectively coupled to the second electrode of the first capacitor and the second electrode of the second capacitor. Two channel electrodes of a second transistor are respectively coupled to the second electrode of the first capacitor and to ground. Two channel electrodes of the third transistor are respectively coupled to the second electrode of the second capacitor and to ground. The gate electrodes of the first, second, and third transistors are responsive to a tuning signal, and an inductor is coupled between the first electrodes of the first and second capacitors.

Abstract translation: 可调谐谐振电路包括在第一和第二电容器的第一和第二电极之间提供匹配电容的第一和第二电容器。 深井布置包括设置在基板中的第二井内的第一井。 第一和第二电容器各自设置在第一阱上。 第一晶体管的两沟道电极分别耦合到第一电容器的第二电极和第二电容器的第二电极。 第二晶体管的两沟道电极分别耦合到第一电容器的第二电极并接地。 第三晶体管的两沟道电极分别耦合到第二电容器的第二电极并接地。 第一，第二和第三晶体管的栅电极响应于调谐信号，并且电感器耦合在第一和第二电容器的第一电极之间。

公开(公告)号：US20090009257A1

公开(公告)日：2009-01-08

申请号：US11774414

申请日：2007-07-06

Applicant: Anders Emericks ,  Lars Karlsson

Inventor： Anders Emericks ,  Lars Karlsson

IPC: H03B5/08

CPC classification number: H03H5/12 ,  H03B5/1243 ,  H03B5/1265 ,  H03B2201/02 ,  H03J2200/10

Abstract: Implementations are presented herein that relate to circuit arrangements that employ the use of a varactor.

Abstract translation: 本文中给出了涉及使用变容二极管的电路布置的实现。

公开(公告)号：US20080174361A1

公开(公告)日：2008-07-24

申请号：US12054755

申请日：2008-03-25

Applicant: Ramon A. Gomez

Inventor： Ramon A. Gomez

IPC: G05F1/10

CPC classification number: H03L7/00 ,  H03B5/1212 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1253 ,  H03B5/1265 ,  H03B5/1278 ,  H03B2200/0046 ,  H03B2200/0048 ,  H03B2200/005 ,  H03B2201/02 ,  H03B2201/0208 ,  H03B2201/025 ,  H03D7/165 ,  H03D7/18 ,  H03J5/244 ,  H03J2200/10 ,  H03L7/0898 ,  H03L7/093 ,  H03L7/099 ,  H03L7/10 ,  H03L7/107 ,  H03L7/1072 ,  H03L7/18

Abstract: A gain compensator compensates for the gain variation of a varactor-tuned voltage tuned oscillator (VCO) in a phase lock loop (PLL). The VCO includes a parallel LC circuit having multiple fixed capacitors that can be switched-in or switched-out of the LC circuit according to a capacitor control signal to perform band-select tuning of the VCO. The gain compensator compensates for the variable VCO gain by generating a charge pump reference current that is based on the same capacitor control signal that controls the fixed capacitors in the LC circuit. The gain compensator generates the charge pump reference current by replicating a reference scale current using unit current sources. The number of times the reference scale current is replicated is based on the fixed capacitance that is switched-in to the LC circuit and therefore the frequency band of the PLL. The reference scale current is generated based on a PLL control that specifics certain PLL characteristics such as reference frequency, loop bandwidth, and loop damping. Therefore, the reference pump current can be efficiently optimized for changing PLL operating conditions, in addition to compensating for variable VCO gain.

Abstract translation: 增益补偿器补偿锁相环（PLL）中变容二极管调谐电压调谐振荡器（VCO）的增益变化。 VCO包括具有多个固定电容器的并联LC电路，其可以根据电容器控制信号切换或切换出LC电路，以执行VCO的频带选择调谐。 增益补偿器通过产生基于控制LC电路中的固定电容器的相同电容器控制信号的电荷泵参考电流来补偿可变VCO增益。 增益补偿器通过使用单位电流源复制参考刻度电流来产生电荷泵参考电流。 参考比例电流复制的次数是基于切换到LC电路的固定电容，因此是PLL的频带。 参考比例电流是基于特定于参考频率，环路带宽和环路阻尼等特定PLL特性的PLL控制产生的。 因此，除了补偿可变VCO增益之外，参考泵电流可以有效地优化用于改变PLL工作条件。