-
1.
公开(公告)号:US11996852B2
公开(公告)日:2024-05-28
申请号:US17752355
申请日:2022-05-24
CPC分类号: H03L7/0802 , H03B5/04 , H03B5/1218 , H03B5/1228 , H03B5/1265 , H03B5/1296 , H03L7/093 , H03L7/099 , H03L7/0991 , H03B2200/0072
摘要: Systems and methods are provided for hopping a digitally controlled oscillator (DCO) among a plurality of channels, wherein a gain of the DCO KDCO is a nonlinear function of frequency. A first normalized tuning word (NTW) corresponding to a first channel of the plurality of channels is generated. A first normalizing gain multiplier X is generated based on the nonlinear function of frequency, on an estimate of the nonlinear function of frequency, at a first frequency corresponding to the first channel. The first NTW is multiplied by the first X to obtain a first oscillator tuning word (OTW). The first OTW is input to the DCO to cause the DCO to hop to the first channel. A system for hopping among a plurality of channels at a plurality of respective frequencies comprises a phase-locked loop (PLL), a digitally controlled oscillator (DCO), a multiplexer, and an arithmetic module.
-
公开(公告)号:US11777446B2
公开(公告)日:2023-10-03
申请号:US17728877
申请日:2022-04-25
发明人: Chi-Hsien Lin , Ho-Hsiang Chen , Hsien-Yuan Liao , Tzu-Jin Yeh , Ying-Ta Lu
CPC分类号: H03B5/1228 , H03B1/04 , H03B5/1203 , H03B5/1206 , H03B5/1212 , H03B5/1243 , H03B5/1296 , H03H7/0161 , H03B2200/009
摘要: An oscillator includes a forward stage including first and second terminals and a transformer-coupled band-pass filter (BPF) coupled between the first and second terminals and including a coupling device between the first and second terminals, and a transformer including first and second windings in a metal layer of an IC. The first winding includes a first conductive structure coupled to the first terminal and a second conductive structure coupled to a voltage node, a third conductive structure including first and second extending portions connected to the first and second conductive structures. The second winding includes a fourth conductive structure including a third extending portion coupled to the voltage node, and a fourth extending portion coupled to the second terminal. The third extending portion is between the second conductive structure and the first extending portion, and the fourth extending portion is between the first conductive structure and the second extending portion.
-
公开(公告)号:US20190165729A1
公开(公告)日:2019-05-30
申请号:US15825173
申请日:2017-11-29
发明人: HSIAO-CHIN CHEN , YEN-TING CHIANG , CHIEN-TE YU
CPC分类号: H03B5/1212 , H03B5/1218 , H03B5/1228 , H03B5/1265 , H03B5/1296 , H03B27/00 , H03B2200/0074 , H03B2200/0078 , H03B2200/009 , H03D7/1425 , H03L7/093 , H04L27/0014 , H04L2027/0016
摘要: A transformer feed-back quadrature voltage controlled oscillator (QVCO) includes a first VCO; a second VCO; and a dynamic phase error correction circuit, having a plurality of coupling capacitors connected between the first and second VCOs, wherein the capacitances of the coupling capacitors are varied according to a digital control signal to correct a phase error of local oscillating (LO) signals of quadrature phases output by the first and second VCOs.
-
公开(公告)号:US20190028059A1
公开(公告)日:2019-01-24
申请号:US15656517
申请日:2017-07-21
发明人: Phillip Kwan , Xiaolei Li , Frankie Y. Liu , Ziad Shehadeh
CPC分类号: H03B5/1296 , H02M3/07 , H03B5/1243 , H03B5/1256 , H03B2200/0038 , H03B2200/004 , H03B2201/0208 , H03B2201/0216 , H03L7/08 , H03L7/093
摘要: A voltage-controlled oscillator (VCO) having an LC tank circuit with a variable inductance is disclosed. In one embodiment, the VCO includes a capacitance, at least a portion of which is variable and responsive to a first tuning voltage. The VCO further includes a transformer having first (primary) and second (secondary) windings. The primary winding is coupled to the capacitance, and provides the inductance of the LC tank circuit. The secondary winding is coupled to a current control circuit. The current control circuit may vary the induced current through the secondary winding. By varying the induced current through the secondary winding, the effective inductance of the primary winding may also be varied. Accordingly, the VCO may be tuned by varying the inductance of the LC tank circuit, as well as by varying the capacitance of the same.
-
公开(公告)号:US09819307B2
公开(公告)日:2017-11-14
申请号:US14745033
申请日:2015-06-19
CPC分类号: H03B5/124 , H03B5/1212 , H03B5/1215 , H03B5/1256 , H03B5/1296 , H03B2200/0072 , H03L7/099
摘要: A dual-band voltage controlled oscillator (VCO) includes: a first oscillator circuit including a first inductor; a second oscillator circuit including a second inductor; a first mode switch configured to electrically connect or disconnect a first output terminal of the first oscillator circuit and a first output terminal of the second oscillator circuit; a second mode switch configured to electrically connect or disconnect a second output terminal of the first oscillator circuit and a second output terminal of the second oscillator circuit; a third mode switch configured to electrically connect or disconnect a first terminal of the first inductor and a first terminal of the second inductor; and a fourth mode switch configured to electrically connect or disconnect a second terminal of the first inductor and a second terminal of the second inductor.
-
公开(公告)号:US20170288650A1
公开(公告)日:2017-10-05
申请号:US15087723
申请日:2016-03-31
发明人: Xin YANG , Tianting ZHAO , Baoxing CHEN
CPC分类号: H03K3/013 , H03B5/08 , H03B5/12 , H03B5/1228 , H03B5/1231 , H03B5/1253 , H03B5/1265 , H03B5/1296 , H03B2200/0072 , H03B2201/0266
摘要: Embodiments of the present disclosure may provide a circuit comprising a tank circuit. The tank circuit may include an inductor having a pair of terminals, a first pair of transistors, and a first pair of capacitors. Each transistor may be coupled between a respective terminal of the inductor and a reference voltage along a source-to-drain path of the transistor. Each capacitor may be provided in a signal path between an inductor terminal coupled to a respective first transistor in the first pair and a gate of a second transistor in the first pair.
-
公开(公告)号:US20160373058A1
公开(公告)日:2016-12-22
申请号:US14822809
申请日:2015-08-10
申请人: BROADCOM CORPORATION
CPC分类号: H03B5/1284 , H03B5/1212 , H03B5/1228 , H03B5/1265 , H03B5/1271 , H03B5/1278 , H03B5/1296 , H03B2200/009 , H04B1/40
摘要: A circuit for an oscillator with common-mode resonance includes a first oscillator circuit and a second oscillator circuit coupled to the first oscillator circuit. Each of the first oscillator circuit or the second oscillator circuit includes a tank circuit, a cross-coupled transistor pair, and one or more capacitors. The tank circuit is formed by coupling a first inductor with a pair of first capacitors. The cross-coupled transistor pair is coupled to the tank circuit, and one or more second capacitors are coupled to the tank circuit and the cross-coupled transistor pair. Each of the first oscillator circuit or the second oscillator circuit allows tuning of a respective common mode (CM) resonance frequency (Fcm) to be at twice a respective differential resonance frequency (FD).DM——ITS 62683970-1.093986 0453
摘要翻译: DM - ITS 62683970-1.093986 0453
-
公开(公告)号:US20160344342A1
公开(公告)日:2016-11-24
申请号:US15226130
申请日:2016-08-02
CPC分类号: H03B5/1228 , G06F17/5063 , G06F17/5068 , G06F2217/64 , H03B5/1206 , H03B5/1212 , H03B5/1243 , H03B5/1259 , H03B5/1296 , H03B2200/0012 , H03B2200/004
摘要: A voltage controlled oscillator includes a resonator and an amplifier. The resonator includes a capacitive element and an inductive element. The inductive element has a plurality of conductive segments forming a physical loop. The inductive element has electrical connections on the physical loop to the plurality of conductive segments forming at least one electrical loop disposed within an interior space formed by the physical loop. The amplifier has an input and an output, the input coupled to a first conductive segment forming a first impedance and the output coupled to a second conductive segment forming a second impedance.
摘要翻译: 压控振荡器包括谐振器和放大器。 谐振器包括电容元件和电感元件。 电感元件具有形成物理回路的多个导电段。 电感元件在物理回路上与多个导电段形成电连接,形成设置在由物理环形成的内部空间内的至少一个电循环。 所述放大器具有输入和输出,所述输入耦合到形成第一阻抗的第一导电段,并且所述输出耦合到形成第二阻抗的第二导电段。
-
公开(公告)号:US09490745B1
公开(公告)日:2016-11-08
申请号:US14602081
申请日:2015-01-21
发明人: Stefano Dal Toso , Rinaldo Castello , Marco Garampazzi , Paulo Mateus Mendes , Nicola Codega , Danilo Manstretta
IPC分类号: H03B5/12
CPC分类号: H03B5/1296 , H03B5/1212 , H03B5/1215 , H03B5/1228 , H03B5/1243 , H03B2200/0054
摘要: A voltage-controlled oscillator comprises a tank circuit and first and second pairs of transistors. Each transistor comprises a gate, a drain, and a source. The drains of the first pair are coupled to the tank circuit and the gates of the first pair are cross-coupled with the drains of the first pair. The drains of the second pair are coupled to the tank circuit and the gates of the second pair are cross-coupled with the drains of the second pair. The oscillator includes a first resonant filter comprising a first terminal coupled to the sources of the first pair and a second resonant filter comprising a first terminal coupled to the sources of the second pair. A method includes adjusting capacitance in a resonant filter to cause the resonant filter to resonate based on a selected frequency.
摘要翻译: 压控振荡器包括储能电路和第一和第二对晶体管。 每个晶体管包括栅极,漏极和源极。 第一对的排水管连接到油箱回路,第一对的排水口与第一对的排水管交叉耦合。 第二对的排水管连接到油箱回路,第二对的排水口与第二对的排水管交叉耦合。 振荡器包括第一谐振滤波器,其包括耦合到第一对的源极的第一端子和包括耦合到第二对的源极的第一端子的第二谐振滤波器。 一种方法包括调整谐振滤波器中的电容,以使得谐振滤波器基于所选择的频率而谐振。
-
公开(公告)号:US09473152B2
公开(公告)日:2016-10-18
申请号:US14319787
申请日:2014-06-30
发明人: Huan-Neng Chen , Chewn-Pu Jou
CPC分类号: H03B5/1243 , H01F5/04 , H01F19/04 , H01F27/2804 , H01F27/2871 , H01F27/288 , H01F38/14 , H03B5/08 , H03B5/1212 , H03B5/1228 , H03B5/1256 , H03B5/1296 , H03J2200/10 , H03L7/00
摘要: A circuit includes a coupling structure and a first inductive device. The coupling structure includes two or more conductive loops and a set of conductive paths electrically connecting the two or more conductive loops. The first inductive device is magnetically coupled with a first conductive loop of the two or more conductive loops.
摘要翻译: 电路包括耦合结构和第一感应装置。 耦合结构包括两个或多个导电回路和一组电连接两个或多个导电回路的导电路径。 第一电感器件与两个或多个导电回路的第一导电回路磁耦合。
-
-
-
-
-
-
-
-
-