公开(公告)号：US11879963B2

公开(公告)日：2024-01-23

申请号：US18108993

申请日：2023-02-13

Applicant: STMicroelectronics S.r.l.

Inventor： Alessandro Parisi ,  Andrea Cavarra ,  Alessandro Finocchiaro ,  Giuseppe Papotto ,  Giuseppe Palmisano

IPC: G01S13/58 ,  G01S13/931 ,  H03B5/12 ,  H03L7/193 ,  H03L7/10 ,  G01S7/40 ,  H03L7/099

CPC classification number: G01S13/584 ,  G01S7/4056 ,  G01S13/931 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1265 ,  H03B5/1293 ,  H03L7/099 ,  H03L7/101 ,  H03L7/103 ,  H03L7/193

Abstract: Disclosed herein is a tunable resonant circuit including an inductance directly electrically connected in series between first and second nodes, a variable capacitance directly electrically connected between the first and second nodes, and a set of switched capacitances coupled between the first and second nodes. The set of switched capacitances includes a plurality of capacitance units, each capacitance unit comprising a first capacitance for that capacitance unit directly electrically connected between the first node and a switch and a second capacitance for the capacitance unit directly electrically connected between the switch and the second node. Control circuitry is configured to receive an input control signal and connected to control the switches of the set of switched capacitances. A biasing circuit is directly electrically connected to the tunable resonance circuit at the first and second nodes.

公开(公告)号：US11831278B2

公开(公告)日：2023-11-28

申请号：US17886143

申请日：2022-08-11

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Chih-Hsiang Chang ,  Yu Lee ,  Hua-Shan Hu ,  Ching-Yuan Yang

IPC: H03B7/06 ,  H03B5/12 ,  H03B19/00

CPC classification number: H03B7/06 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1265 ,  H03B19/00 ,  H03B2200/0072

Abstract: A voltage-controlled oscillator device includes first and second voltage-controlled oscillators, a first switch group including two first switches, and a second switch group including two second switches. The first voltage-controlled oscillator includes a first inductor group, a first negative resistance circuit and a first voltage output terminal group. The second voltage-controlled oscillator includes a second inductor group, a second negative resistance circuit and a second voltage output terminal group. For the first switch group, first control terminals are electrically connected to the first voltage output terminal group, first input terminals are electrically connected to the second voltage output terminal group, first output terminals are electrically connected. For the second switch group, second control terminals are electrically connected to the second voltage output terminal group, second input terminals are electrically connected to the first voltage output terminal group, second output terminals are electrically connected.

公开(公告)号：US11817868B2

公开(公告)日：2023-11-14

申请号：US17855525

申请日：2022-06-30

Applicant: Silicon Laboratories Inc.

Inventor： John M. Khoury

IPC: H03L7/099 ,  H03L7/085 ,  G06F1/02 ,  H03B5/12 ,  H03L7/14 ,  H03L7/189 ,  H03L7/197

CPC classification number: H03L7/0991 ,  G06F1/022 ,  H03B5/1206 ,  H03B5/1212 ,  H03B5/1218 ,  H03B5/1228 ,  H03B5/1243 ,  H03B5/1265 ,  H03L7/085 ,  H03L7/099 ,  H03L7/0992 ,  H03L7/148 ,  H03L7/189 ,  H03L7/1974

Abstract: An apparatus includes a digitally controlled oscillator (DCO), which includes an inductor coupled in series with a first capacitor. The DCO further includes a second capacitor coupled in parallel with the series-coupled inductor and first capacitor, a first inverter coupled in parallel with the second capacitor, and a second inverter coupled back-to-back to the first inverter. The DCO further includes a digital-to-analog-converter (DAC) to vary a capacitance of the first capacitor.

公开(公告)号：US11770101B2

公开(公告)日：2023-09-26

申请号：US17723103

申请日：2022-04-18

Applicant: Huawei Technologies Co., Ltd.

Inventor： Mina Shahmohammadi ,  Masoud Babaie ,  Robert Bogdan Staszewski

IPC: H03B5/12 ,  H03F3/193 ,  H03F1/56 ,  H03F3/24 ,  H03F3/72 ,  H04B1/44 ,  H03L7/00

CPC classification number: H03B5/1243 ,  H03B5/1218 ,  H03B5/1228 ,  H03B5/1262 ,  H03B5/1265 ,  H03B5/1293 ,  H03B5/1296 ,  H03F1/565 ,  H03F3/193 ,  H03F3/245 ,  H03F3/72 ,  H03L7/00 ,  H04B1/44 ,  H03B2201/0266

Abstract: The invention relates to a radio frequency oscillator, the radio frequency oscillator comprising a resonator circuit being resonant at an excitation of the resonator circuit in a differential mode and at an excitation of the resonator circuit in a common mode, wherein the resonator circuit has a differential mode resonance frequency at the excitation in the differential mode, and wherein the resonator circuit has a common mode resonance frequency at the excitation in the common mode, a first excitation circuit being configured to excite the resonator circuit in the differential mode to obtain a differential mode oscillator signal oscillating at the differential mode resonance frequency, and a second excitation circuit being configured to excite the resonator circuit in the common mode to obtain a common mode oscillator signal oscillating at the common mode resonance frequency.

公开(公告)号：US09954487B1

公开(公告)日：2018-04-24

申请号：US15288850

申请日：2016-10-07

Applicant: International Business Machines Corporation

Inventor： Zhenxing Bi ,  Hung H. Tran ,  Zheng Xu

IPC: H03B5/08 ,  H03B5/12 ,  H03L7/099 ,  H01F41/06 ,  H03H7/01 ,  H01L27/06 ,  H03H7/42 ,  H01F27/40 ,  H01F27/28

CPC classification number: H03B5/1243 ,  H01F27/2823 ,  H01F27/40 ,  H01F41/06 ,  H01L27/0676 ,  H03B5/1228 ,  H03B5/1265 ,  H03H7/0115 ,  H03H7/42 ,  H03H2210/012 ,  H03H2210/025 ,  H03J3/22 ,  H03J5/00 ,  H03J5/246 ,  H03L7/099

Abstract: A method for controlling a semiconductor circuit, including forming an inductor and a capacitor on a substrate, which are inductively coupled to one another. The inductor has an inductance value while the capacitor has a capacitance value. The inductor and capacitor make up an oscillator circuit with two terminals. Eddy currents are generated through the capacitor when an operating current flows along the inductor. These eddy currents influence, by inductive coupling, the inductance value and performance of the oscillator circuit, thus simultaneously tuning the inductance and capacitance of the oscillator circuit.

公开(公告)号：US20180083573A1

公开(公告)日：2018-03-22

申请号：US15392527

申请日：2016-12-28

Applicant: Svetozar Broussev ,  Andreas Jörn Leistner ,  Andreas Roithmeier ,  Thomas Gustedt

Inventor： Svetozar Broussev ,  Andreas Jörn Leistner ,  Andreas Roithmeier ,  Thomas Gustedt

IPC: H03B5/12

CPC classification number: H03B5/1243 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/1265

Abstract: Various designs for MOS transistor-based RF switch topologies for high speed capacitive tuning of oscillators switch circuits include a main switch device comprising a gate connected to a control terminal, a drain connected to a first terminal that is connected to the first capacitor, and a source connected to a second terminal that is connected to the second capacitor. The switch further comprises a first NMOS device having a gate connected to the main switch device gate, a source connected to a ground, and a drain connected to the first terminal. The switch further comprises a second NMOS device having a gate connected to the main switch device gate, a source connected to a ground, and a drain connected to the second terminal. The switch further comprises a pair of PMOS devices each having drains connected respectively to the first and second terminals.

公开(公告)号：US20180034412A1

公开(公告)日：2018-02-01

申请号：US15725964

申请日：2017-10-05

Applicant: Futurewei Technologies, Inc.

Inventor： Michael L. Bushman ,  Charles J. Duey ,  James W. Caldwell

IPC: H03B5/12 ,  G06F17/50

CPC classification number: H03B5/1228 ,  G06F17/5063 ,  G06F17/5068 ,  G06F2217/64 ,  H03B5/1206 ,  H03B5/1212 ,  H03B5/1243 ,  H03B5/1259 ,  H03B5/1296 ,  H03B2200/0012 ,  H03B2200/004

Abstract: 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.

公开(公告)号：US09762249B1

公开(公告)日：2017-09-12

申请号：US15224199

申请日：2016-07-29

Applicant: Movellus Circuits, Inc.

Inventor： Muhammad Faisal ,  Jeffrey Alan Fredenburg ,  David Michael Moore

IPC: H03L7/06 ,  H03L7/07 ,  H03L7/099 ,  H03L7/093 ,  H03B5/12 ,  H03M7/16

CPC classification number: H03L7/07 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1243 ,  H03B2201/011 ,  H03L7/093 ,  H03L7/099 ,  H03L7/0998 ,  H03L7/18 ,  H03L2207/50 ,  H03M7/16

Abstract: A reconfigurable, digital phase-locked loop integrated circuit is disclosed which is coupleable to a reference frequency generator. A representative embodiment may include a memory storing a plurality of configuration parameters, at least one configuration parameter of specifying an output frequency; a reconfigurable frequency and delay generator configurable and reconfigurable in response to the configuration parameters to generate an output signal having the output frequency; and a digital controller adapted to access the memory and retrieve the plurality of configuration parameters, and to generate a plurality of control signals to the reconfigurable frequency and delay generator both to generate the output signal having the output frequency in response to the plurality of configuration parameters, and to match a phase of the output signal to an input signal phase.

公开(公告)号：US20170257064A1

公开(公告)日：2017-09-07

申请号：US15599694

申请日：2017-05-19

Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.

Inventor： Lan-Chou Cho ,  Huan-Neng Chen ,  Chewn-Pu Jou ,  Feng Wei Kuo

IPC: H03L7/00 ,  H01F38/14 ,  H01F5/04 ,  H03B5/12 ,  H01F27/28

CPC classification number: H03B5/1243 ,  H01F5/04 ,  H01F19/04 ,  H01F27/2804 ,  H01F27/2871 ,  H01F27/288 ,  H01F38/14 ,  H03B5/1212 ,  H03B5/1228 ,  H03B5/1256 ,  H03B5/1265 ,  H03B5/1296 ,  H03J2200/10 ,  H03L7/00 ,  H03L7/099 ,  H03L7/0995

Abstract: A circuit includes a first digital controlled oscillator and a second digital controlled oscillator coupled to the first digital controlled oscillator. A skew detector is connected to determine a skew between outputs of the first digital controlled oscillator and the second digital controlled oscillator, and a decoder is utilized to output a control signal, based on the skew, to modify a frequency of the first digital controlled oscillator using a switched capacitor array to reduce or eliminate the skew.

公开(公告)号：US20170201213A1

公开(公告)日：2017-07-13

申请号：US15399059

申请日：2017-01-05

Applicant: SDRF EURL

Inventor： BIAGIO BISANTI ,  ERIC DUVIVIER ,  LORENZO CARPINETO ,  STEFANO CIPRIANI ,  FRANCESCO COPPOLA ,  GIANNI PUCCIO ,  RÉMI ARTINIAN ,  FRANCOIS MAROT ,  VANESSA BEDERO ,  LYSIANE KOECHLIN

IPC: H03B5/04 ,  H03B5/12

CPC classification number: H03B5/04 ,  H03B5/1218 ,  H03B5/1231 ,  H03B5/124 ,  H03B5/1243 ,  H03B2200/0006 ,  H03B2200/0008 ,  H03B2200/004 ,  H03B2201/0208 ,  H03L7/099

Abstract: A variable frequency oscillator comprising a first transistor (10) and a second transistor (20); wherein the first transistor (10) has a first terminal—collector—which is connected to a reference voltage, and a second terminal—emitter—which is connected to a first terminal of a first current source (13), which second terminal is connected to ground, and a third terminal—base—connected to a first terminal of a first inductor (14) and to a top terminal of a first capacitor (11), wherein the first capacitor (11) has a bottom terminal which is connected to the second terminal—emitter—of the first transistor (10) but also to a top terminal of a second capacitor (12) having a bottom terminal being connected to ground; wherein the second transistor (20) has a first terminal—collector—which is connected to a reference voltage, and a second terminal—emitter—which is connected to a first terminal of a second current source (23), which second terminal is connected to ground, and a third terminal—base—connected to a first terminal of a second inductor (14) and to a top terminal of a third capacitor (21), wherein the third capacitor (21) has a bottom terminal which is connected to the second terminal—emitter—of the second transistor (20) and also to a top terminal of a fourth capacitor (22) having a bottom terminal connected to ground; wherein the first and second inductors (14, 24) have a second terminal which are connected via a circuit (100) achieving variable capacitance, so as to form a circuit connecting in series all passive components composing the LC tank, so as to achieve a variable capacitance which can be used for performing a tuning of the oscillator, and wherein the second capacitor (12) and the fourth capacitor (22) are both connected to the physical ground thereby avoiding a 2nd harmonic common mode oscillation that might dominate over the differential fundamental one and might destroy the first and the second transistors (10, 20).