公开(公告)号：US07239212B2

公开(公告)日：2007-07-03

申请号：US11534870

申请日：2006-09-25

Applicant: Ramon A. Gomez

Inventor： Ramon A. Gomez

IPC: H03B1/00

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一个PLL来控制的，该控制指定了某些PLL特性，例如参考频率，环路带宽和环路阻尼。 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。

公开(公告)号：US20060284689A1

公开(公告)日：2006-12-21

申请号：US11459205

申请日：2006-07-21

Applicant: Ramon Gomez

Inventor： Ramon Gomez

IPC: H03L7/00

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 PILL 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一些PILL特性的PLL控制产生的，例如参考频率，环路带宽和环路阻尼。 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。

公开(公告)号：US20060097796A1

公开(公告)日：2006-05-11

申请号：US11313372

申请日：2005-12-21

Applicant: Ramon Gomez

Inventor： Ramon Gomez

IPC: H03L7/00

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.

公开(公告)号：US06838947B2

公开(公告)日：2005-01-04

申请号：US10443741

申请日：2003-05-23

Applicant: Ramon A. Gomez

Inventor： Ramon A. Gomez

IPC: H03B1/00 ,  H03B5/12 ,  H03D7/18 ,  H03J5/24 ,  H03L7/00 ,  H03L7/089 ,  H03L7/099 ,  H03L7/10 ,  H03L7/18

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。

公开(公告)号：US20040012452A1

公开(公告)日：2004-01-22

申请号：US10344154

申请日：2003-05-19

Inventor： Alan C. Young ,  James Harvey ,  Terrence M.P. Percival

IPC: H03B005/20

CPC classification number: H03B5/1841 ,  H03B5/1882 ,  H03B2200/0078 ,  H03B2201/02 ,  H03C3/40 ,  H03L7/081 ,  H03L7/099

Abstract: An oscillator (100, 200) and a method of adjusting the frequency of oscillation of the oscillator (100, 200) are disclosed for generating a signal with an adjustable frequency in a frequency range from 1 GHZ to 200 GHz. The oscillator (100, 200) includes a loop circuit The loop circuit has an amplifier (101), a delay element or filter (103), a phase shifter (102), a device for adjusting the phase shifter (102), and a coupler (104) to provide an output signal. The adjusting device is coupled to the phase shifter (102).

Abstract translation: 公开了一种振荡器（100,200）和调节振荡器（100,200）的振荡频率的方法，用于在1GHz到200GHz的频率范围内产生具有可调频率的信号。 所述振荡器（100,200）包括环路电路。所述环路电路具有放大器（101），延迟元件或滤波器（103），移相器（102），用于调整所述移相器（102）的装置，以及 耦合器（104）以提供输出信号。 调节装置耦合到移相器（102）。

公开(公告)号：US20030206065A1

公开(公告)日：2003-11-06

申请号：US10443741

申请日：2003-05-23

Applicant: Broadcom Corporation

Inventor： Ramon A. Gomez

IPC: H03L007/00

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.

公开(公告)号：US5896068A

公开(公告)日：1999-04-20

申请号：US50521

申请日：1998-03-30

Applicant: Nathan Y. Moyal

Inventor： Nathan Y. Moyal

IPC: H03B1/00 ,  H03K3/0231 ,  H03L7/093 ,  H03L7/099 ,  H03B5/04

CPC classification number: H03L7/0995 ,  H03K3/0231 ,  H03L7/093 ,  H03B2201/02 ,  H03L2207/05

Abstract: A voltage controlled oscillator (VCO) having a current gain compensation circuit includes a control circuit portion for generating a frequency control signal, and a ring oscillator responsive to the frequency control signal for outputting the VCO output signal. The control circuit includes a control transistor responsive to input control voltage V.sub.control. Connected between the source terminal of the control transistor and ground is a resistive element in parallel with an N-channel field effect transistor and a P-channel field effect transistor, each configured to operate in saturation. The resistor, and the N-channel, and P-channel transistors provide parallel current paths which, collectively, form a control current that corresponds to the frequency control signal. As the voltage control signal V.sub.control increases beyond a predetermined level, the transistors conduct, and carry a current that is proportional to the square of the input control voltage V.sub.control. Accordingly, the magnitude of total control current is dominated by the transistor-provided component, and assumes a square relationship, with respect to the input control voltage. This square-law current-voltage gain characteristic compensates for the inversely mirrored frequency gain characteristic of the ring oscillator in order to attain a reduced frequency gain variation for the overall VCO, with respect to control voltage variations. This reduction in variation translates to a reduced variation in the frequency gain of the VCO with respect to temperature variations when the VCO is used in a phase locked loop (PLL) circuit.

Abstract translation: 具有电流增益补偿电路的压控振荡器（VCO）包括用于产生频率控制信号的控制电路部分和响应于用于输出VCO输出信号的频率控制信号的环形振荡器。 控制电路包括响应于输入控制电压Vcontrol的控制晶体管。 连接在控制晶体管的源极端子和地之间的是与N沟道场效应晶体管和P沟道场效应晶体管并联的电阻元件，每个晶体管被配置为在饱和状态下工作。 电阻器，N沟道和P沟道晶体管提供并联电流路径，它们共同形成对应于频率控制信号的控制电流。 当电压控制信号Vcontrol增加超过预定电平时，晶体管导通，并传送与输入控制电压Vcontrol的平方成比例的电流。 因此，总控制电流的大小由晶体管提供的元件支配，相对于输入控制电压呈现一个正方形关系。 相对于控制电压变化，该平方律电流 - 电压增益特性补偿了环形振荡器的反向镜像频率增益特性，以获得整个VCO的降低的频率增益变化。 当VCO用于锁相环（PLL）电路时，这种变化的降低可以相对于温度变化而降低VCO的频率增益的变化。

公开(公告)号：US5764110A

公开(公告)日：1998-06-09

申请号：US769801

申请日：1996-12-20

Applicant: Atsuhiko Ishibashi

Inventor： Atsuhiko Ishibashi

IPC: H03B1/00 ,  H03K3/011 ,  H03K3/03 ,  H03K3/354 ,  H03L1/00 ,  H03B5/04

CPC classification number: H03K3/0315 ,  H03K3/011 ,  H03K3/354 ,  H03L1/00 ,  H03B2201/02

Abstract: A circuit for suppressing period jitter of the clock output of a ring oscillator caused by supply voltage fluctuations. The ring oscillator includes n identical current controlled delay circuits 26.1-n connected in a ring, and a replica circuit 36 identical to the current controlled delay circuit. The replica circuit 36 receives a constant input voltage so that its output is always at a high level. A differential amplifier 35 receiving a reference potential Vref is connected in a negative feedback circuit with replica circuit 36, so that the output of the replica circuit 36 is held equal to the reference potential Vref. An output of the negative feedback circuit is also applied to each of the current controlled delay circuits 26.1-n, so that their high level outputs are held equal to the reference potential Vref.

公开(公告)号：US5635878A

公开(公告)日：1997-06-03

申请号：US546406

申请日：1995-10-20

Applicant: Ding-Jen Liu ,  Ying-Tzung Wang

Inventor： Ding-Jen Liu ,  Ying-Tzung Wang

IPC: H03B1/00 ,  H03B1/04 ,  H03B5/24 ,  H03K3/0231 ,  H03L7/099

CPC classification number: H03B5/24 ,  H03K3/0231 ,  H03B2201/02 ,  H03B2202/042

Abstract: A differential-type voltage-controlled oscillator (VCO) with low-frequency stability compensation is disclosed. The differential-type VCO comprises a voltage-to-current converter for converting an input voltage signal into a biasing current signal to control the frequency of the VCO output. The VCO further comprises a number of stages of differential amplifiers connected in cascade. Each of the stages of differential amplifiers includes a pair of differential input PMOS transistors, with each of the PMOS transistors connected to a pair of NMOS load transistors. Each of the pair of NMOS load transistors are connected in parallel. The VCO further comprises a number of stages of bias circuits connected in cascade. Each of the bias circuits is connected to a corresponding stage of the differential amplifiers for receiving the bias current generated by the voltage-to-current converter. Each of the stages of bias circuits comprises a current source for supplying a constant current to maintain the low-frequency voltage-frequency linearity of the output of the VCO, and a biasing PMOS transistor connected in parallel with said current source.

Abstract translation: 公开了一种具有低频稳定性补偿的差分型压控振荡器（VCO）。 差分型VCO包括电压 - 电流转换器，用于将输入电压信号转换成偏置电流信号以控制VCO输出的频率。 VCO还包括级联连接的多级差分放大器。 差分放大器的每个级包括一对差分输入PMOS晶体管，每个PMOS晶体管连接到一对NMOS负载晶体管。 一对NMOS负载晶体管中的每一个并联连接。 VCO还包括级联连接的多级偏置电路。 每个偏置电路连接到差分放大器的相应级，用于接收由电压 - 电流转换器产生的偏置电流。 偏置电路的每个级包括用于提供恒定电流以维持VCO的输出的低频电压 - 频率线性度的电流源和与所述电流源并联连接的偏置PMOS晶体管。

公开(公告)号：US5581216A

公开(公告)日：1996-12-03

申请号：US377269

申请日：1995-01-24

Applicant: John E. Ruetz

Inventor： John E. Ruetz

IPC: H03B1/00 ,  H03K3/013 ,  H03K3/0231 ,  H03K3/354 ,  H03B5/24 ,  H03L7/099

CPC classification number: H03K3/0231 ,  H03K3/013 ,  H03K3/354 ,  H03B2201/02

Abstract: A voltage controlled oscillator circuit includes a predetermined number of interconnected differential comparator cells having source connected p-channel and n-channel transistors, a biasing transistor connected to the sources of the p-channel or n-channel transistors, and clamping circuits connected to said first and second n-channel transistors. The voltage controlled oscillator circuit further includes filter circuitry for filtering the input currents to the biasing transistor.

Abstract translation: 压控振荡器电路包括具有源极连接的p沟道和n沟道晶体管的预定数量的互连的差分比较器单元，连接到p沟道或n沟道晶体管的源极的偏置晶体管，以及连接到所述 第一和第二n沟道晶体管。 压控振荡器电路还包括用于滤波到偏置晶体管的输入电流的滤波器电路。