公开(公告)号：US11290087B2

公开(公告)日：2022-03-29

申请号：US16653728

申请日：2019-10-15

申请人： pSemi Corporation

发明人： Tero Tapio Ranta

IPC分类号： H03K17/687 ,  H03J3/20 ,  H03J5/24 ,  H03J3/16

摘要： Methods and devices providing Positive Logic biasing schemes for use in a digitally tuning capacitor in an integrated circuit device are described. The described methods can be used in integrated circuits with stringent requirements in terms of switching time, power handling, noise sensitivity and power consumption. The described devices include DC blocking capacitors arranged in series with stacked switches coupled to RF nodes. The stacked FET switches receive non-negative supply voltages through their drains and gates during the ON and OFF states to adjust the capacitance between the two nodes.

公开(公告)号：US20210044308A1

公开(公告)日：2021-02-11

申请号：US16986814

申请日：2020-08-06

申请人： SKYWORKS SOLUTIONS, INC.

发明人： William J. DOMINO

IPC分类号： H04B1/04 ,  H03H7/40 ,  H04B1/18 ,  H03J5/24

摘要： A capless impedance tuner can include first node and second nodes, a first series path, a second series path, and an inductance path, each between the first node and the second node and including a switch to allow the path to couple or uncouple the first and second nodes. Each series path can be configured to allow a substantially continuous flow of a direct current between the first node and the second node when coupled. The tuner can further include a shunt path with a switch to allow coupling or uncoupling of the second node and ground. The tuner can further include a switchable grounding path implemented along the inductance path and configured to allow the inductance path to function as a series inductance path between the first and second nodes, or as a shunt inductance path between the ground and a node along the inductance path.

公开(公告)号：US10855296B2

公开(公告)日：2020-12-01

申请号：US16585689

申请日：2019-09-27

申请人： Infineon Technologies AG

发明人： Matteo Bassi ,  Giovanni Boi ,  Dmytro Cherniak ,  Fabio Padovan

IPC分类号： H03L7/24 ,  H03L7/18 ,  H03L7/099 ,  H03G5/14 ,  H03J5/24 ,  H03B5/12

摘要： A circuit for calibrating an injection locked oscillator is provided. The injection locked oscillator includes an injection locking input, an LC tank and an oscillator output to output an oscillator output signal. The circuit is configured to adjust a capacitance of the LC tank to different values, detect an amplitude of the oscillator output signal for each value of the different values of the capacitance while an input signal having a target frequency is applied to the injection locking input, determine a maximum amplitude of the detected amplitudes, and select a value for operating the injection locked oscillator based on the determined maximum amplitude.

公开(公告)号：US10476484B2

公开(公告)日：2019-11-12

申请号：US15871643

申请日：2018-01-15

申请人： pSemi Corporation

发明人： Tero Tapio Ranta

IPC分类号： H03K17/687 ,  H03J3/16 ,  H03J3/20 ,  H03J5/24

摘要： Methods and devices providing Positive Logic biasing schemes for use in a digitally tuning capacitor in an integrated circuit device are described. The described methods can be used in integrated circuits with stringent requirements in terms of switching time, power handling, noise sensitivity and power consumption. The described devices include DC blocking capacitors arranged in series with stacked switches coupled to RF nodes. The stacked FET switches receive non-negative supply voltages through their drains and gates during the ON and OFF states to adjust the capacitance between the two nodes.

公开(公告)号：US20190097326A1

公开(公告)日：2019-03-28

申请号：US16197908

申请日：2018-11-21

申请人： Ethertronics, Inc.

发明人： Laurent Desclos ,  Olivier Pajona

IPC分类号： H01Q21/00 ,  H03J5/22 ,  H03J5/24 ,  H01Q5/335 ,  H01Q1/24 ,  H01Q21/30

CPC分类号： H01Q21/0006 ,  H01Q1/243 ,  H01Q5/335 ,  H01Q21/30 ,  H03J5/22 ,  H03J5/244 ,  H03J2200/06

摘要： A multiport RF switch assembly with integrated impedance tuning capability is described that provides a single RFIC solution to switch between transmit and receive paths in a communication system. Dynamic tuning is integrated into each switch sub-assembly to provide the capability to impedance match antennas or other components connected to the multiport switch. The tuning function at the switch can be used to shape the antenna response to provide better filtering at the switch/RF front-end (RFFE) interface to allow for reduced filtering requirements in the RFFE. Memory is designed into the multiport switch assembly, allowing for a look-up table or other data to reside with the switch and tuning circuit. The resident memory will result in easier integration of the tunable switch assembly into communication systems.

公开(公告)号：US20180316321A1

公开(公告)日：2018-11-01

申请号：US15961299

申请日：2018-04-24

申请人： Qorvo US, Inc.

发明人： George Maxim ,  Dirk Robert Walter Leipold ,  Baker Scott

IPC分类号： H03F3/193 ,  H03J3/06 ,  H03F3/72 ,  H03F3/68 ,  H03F3/24 ,  H03F1/56 ,  H03J5/24 ,  H03H7/01

CPC分类号： H03F3/193 ,  H03F1/56 ,  H03F1/565 ,  H03F3/245 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/165 ,  H03F2200/222 ,  H03F2200/267 ,  H03F2200/294 ,  H03F2200/391 ,  H03F2200/451 ,  H03F2203/7209 ,  H03H7/09 ,  H03H7/1775 ,  H03H7/38 ,  H03H2210/012 ,  H03H2210/025 ,  H03H2210/04 ,  H03J3/06 ,  H03J5/242 ,  H04B1/04

摘要： RF communications circuitry, which includes a first tunable RF filter and a first RF low noise amplifier (LNA) is disclosed. The first tunable RF filter includes a pair of weakly coupled resonators, and receives and filters a first upstream RF signal to provide a first filtered RF signal. The first RF LNA is coupled to the first tunable RF filter, and receives and amplifies an RF input signal to provide an RF output signal.

公开(公告)号：US20180204660A1

公开(公告)日：2018-07-19

申请号：US15872184

申请日：2018-01-16

申请人： Telefonaktiebolaget LM Ericsson (publ)

发明人： Magnus Nilsson ,  Magnus Sandgren

IPC分类号： H01F21/12 ,  H04B1/40 ,  H03J5/24 ,  H03J5/02 ,  H03J3/20 ,  H01L23/522

CPC分类号： H01F21/12 ,  H01F2021/125 ,  H01L23/5227 ,  H01L2924/0002 ,  H03J3/20 ,  H03J5/02 ,  H03J5/246 ,  H04B1/40 ,  H01L2924/00

摘要： A tunable inductor arrangeable on a chip or substrate comprises a first winding part connected at one end to a first input of the tunable inductor arrangement, a second winding part connected at one end to the other end of the first winding part, a third winding part connected at one end to a second input of the tunable inductor arrangement, a fourth winding part connected at one end to the other end of the third winding part, and a switch arrangement arranged. The switch arrangement tunes the tunable inductor by selectively connecting the first and fourth winding parts in parallel and the second and third winding parts in parallel, with the parallel couplings in series between the first and second inputs, or connecting the first, second, fourth and third winding parts in series between the first and second inputs. Corresponding transceivers, communication devices, methods and computer programs are disclosed.

公开(公告)号：US20180138897A1

公开(公告)日：2018-05-17

申请号：US15573385

申请日：2016-05-11

申请人： Yang Xu ,  Peter R. Kinget

发明人： Yang Xu ,  Peter R. Kinget

IPC分类号： H03J3/08 ,  H03J5/24

CPC分类号： H03J3/08 ,  H03J5/24

摘要： Switched capacitor radio frequency receiver front-ends are provided, comprising: a plurality of banks, each comprising: a first switch connected to a RF input signal; a sampling capacitor connected to the first switch and to ground; a second switch connected in parallel to the sampling capacitor; and a Gm cell coupled to the sampling capacitor and an output; wherein: the output of the Gm cell of each of the plurality on banks are coupled together; and the first switch and the second switch are controlled by a multi-phase signal that causes, for each of the plurality of banks, the first switch to be turned ON at a first point in time and the second switch to be turned ON at a second point in time, wherein the first point in time for a first bank is not the same as the first point in time for a second bank.

公开(公告)号：US20180115305A1

公开(公告)日：2018-04-26

申请号：US15476887

申请日：2017-03-31

申请人： QUALCOMM Incorporated

发明人： Muhammad Nazmul ISLAM ,  Sundar SUBRAMANIAN ,  Junyi LI

IPC分类号： H03J5/24 ,  H03J7/18 ,  H03J7/04 ,  H03J9/00 ,  H04B7/0417 ,  H04N5/50

CPC分类号： H03J5/242 ,  H03J7/047 ,  H03J7/186 ,  H03J9/002 ,  H03J2200/27 ,  H04B7/0417 ,  H04B7/0695 ,  H04B7/088 ,  H04N5/50 ,  H04W74/0816

摘要： Methods and apparatus that support controlled transmission and directional reception of RTS and/or CTS messages, are described. Controlled transmission may include transmitting a same RTS message multiple times in the same direction and/or transmitting an RTS message with a length that is multiple times longer than a standard RTS message. In an aspect, a receiver may determine spatial directions of a plurality of transmitters including a first transmitter and at least one other transmitter, and may perform a beam sweep in the determined spatial directions for receiving one or more RTS messages. A transmitter may determine that a receiver is to perform a beam sweep in K different spatial directions, and may transmit a same RTS message for a data transmission K times in the same direction or an RTS message with a length approximately K times longer than a standard RTS message, during a duration of the beam sweep.

公开(公告)号：US09748931B2

公开(公告)日：2017-08-29

申请号：US15241710

申请日：2016-08-19

申请人： Markus Rehm

发明人： Markus Rehm

IPC分类号： H03K3/00 ,  H03J5/24 ,  H04N3/16 ,  H04N3/22 ,  H04N3/27 ,  H03H7/32 ,  H03K3/037 ,  H03L7/099

CPC分类号： H03J5/246 ,  H03H7/325 ,  H03K3/037 ,  H03L7/099 ,  H04N3/16 ,  H04N3/22 ,  H04N3/27

摘要： An electrical resonance network comprising a first capacitor and a first inductor whose resonance frequency can be tuned by means of a second capacitor and/or a second inductor. The resulting effective capacitor- or inductor value of a network period is controlled by a variable coupling respectively decoupling interval by means of at least one coupling switch. The coupling respectively decoupling interval is synchronized by a sign change of a current and/or voltage in the network.