公开(公告)号：US10276941B2

公开(公告)日：2019-04-30

申请号：US14600977

申请日：2015-01-20

Applicant: RF Micro Devices, Inc.

Inventor： Ruediger Bauder

IPC: H01Q21/00 ,  H01Q21/24 ,  H01Q9/42 ,  H01Q21/28

Abstract: RF communications circuitry, which includes a first RF antenna element, a second RF antenna element, a third RF antenna element, and a fourth RF antenna element is disclosed. The first RF antenna element is proximal to the second RF antenna element. The third RF antenna element is proximal to the fourth RF antenna element. A primary axis of the first RF antenna element is about perpendicular to a primary axis of one of the third RF antenna element and the fourth RF antenna element.

公开(公告)号：US09865922B2

公开(公告)日：2018-01-09

申请号：US14465142

申请日：2014-08-21

Applicant: RF Micro Devices, Inc.

Inventor： Daniel Charles Kerr ,  Christian Rye Iversen ,  Eric K. Bolton ,  Ruediger Bauder ,  Nadim Khlat

IPC: H01Q5/328 ,  H01Q5/335

CPC classification number: H01Q5/328 ,  H01Q5/335

Abstract: Antenna tuning circuitry includes an antenna tuning node, an antenna tuning switch, and a resonant tuning circuit. The antenna tuning node is coupled to a resonant conduction element of an antenna. The antenna tuning switch and the resonant tuning circuit are coupled in series between the antenna tuning switch and the antenna tuning node, such that the resonant tuning circuit is between the antenna tuning node and the antenna tuning switch. The resonant tuning circuit is configured to resonate at one or more harmonic frequencies generated by the antenna tuning switch such that a high impedance path is formed between the antenna tuning switch and the antenna tuning node at harmonic frequencies generated by the antenna tuning switch. Accordingly, harmonic interference generated by the antenna tuning switch is prevented from reaching the antenna, while simultaneously allowing for tuning of the antenna.

公开(公告)号：US09156677B2

公开(公告)日：2015-10-13

申请号：US13764324

申请日：2013-02-11

Applicant: RF Micro Devices, Inc.

Inventor： Ruediger Bauder ,  Nadim Khlat ,  Julio Costa ,  Jonathan Hammond

IPC: H03F1/50 ,  B81B7/00 ,  H04W52/02

CPC classification number: B81B7/0022 ,  B81B2201/014 ,  B81C1/00976 ,  H01H59/0009 ,  H04W52/02

Abstract: Pilot switch circuitry grounds a hot node (an injection node) of a microelectromechanical system (MEMS) switch to reduce or eliminate arcing between a cantilever contact and a terminal contact when the MEMS switch is opened or closed. The pilot switch circuitry grounds the hot node prior to, during, and after the cantilever contact and terminal contact of the MEMS come into contact with one another (when the MEMS switch is closed). Additionally, the pilot switch circuitry grounds the hot node prior to, during, and after the cantilever contact and terminal contact of the MEMS disengage from one another (when the MEMS switch is opened).

Abstract translation: 导向开关电路将微机电系统（MEMS）开关的热节点（注入节点）接地，以在MEMS开关打开或关闭时减少或消除悬臂触点和端子触点之间的电弧。 在MEMS悬臂接触之前，期间和之后，导频开关电路将热节点接地，并且MEMS的端子接触彼此接触（当MEMS开关闭合时）。 此外，导频开关电路在MEMS的彼此脱离接合之前，之中和之后，以及MEMS的彼此脱离接合（当MEMS开关断开时）接地。

公开(公告)号：US09083518B2

公开(公告)日：2015-07-14

申请号：US13760240

申请日：2013-02-06

Applicant: RF Micro Devices, Inc.

Inventor： Ruediger Bauder ,  Marcus Granger-Jones ,  Nadim Khlat

IPC: H04B1/56 ,  H04L5/14 ,  H03H7/48 ,  H04L25/03 ,  H04B1/525

CPC classification number: H04L5/14 ,  H03H7/48 ,  H04B1/44 ,  H04B1/525 ,  H04L25/03878

Abstract: This disclosure includes embodiments of a tunable hybrid coupler. The tunable hybrid coupler includes a first inductive element having a first inductance, a second inductive element having a second inductance and mutually coupled to the first inductive element, a first variable capacitive element having a first variable capacitance, and a second variable capacitance having a second variable capacitance. The first variable capacitive element is coupled between a first port and a second port. The second variable capacitive element is coupled between a third port and a fourth port. The first inductive element is coupled from the first port to the third port, while the second inductive element is coupled from the second port to the fourth port. Accordingly, the tunable hybrid coupler may form an impedance matching network that is tunable to different radio frequency (RF) communication bands. The tunable hybrid coupler can be used in a tunable RF duplexer.

Abstract translation: 本公开包括可调混合耦合器的实施例。 可调混合耦合器包括具有第一电感的第一电感元件，具有第二电感并且相互耦合到第一电感元件的第二电感元件，具有第一可变电容的第一可变电容元件和具有第二可变电容的第二可变电容 可变电容。 第一可变电容元件耦合在第一端口和第二端口之间。 第二可变电容元件耦合在第三端口和第四端口之间。 第一电感元件从第一端口耦合到第三端口，而第二电感元件从第二端口耦合到第四端口。 因此，可调混合耦合器可以形成可调谐到不同射频（RF）通信频带的阻抗匹配网络。 可调混合耦合器可用于可调谐RF双工器。

公开(公告)号：US20130250819A1

公开(公告)日：2013-09-26

申请号：US13848393

申请日：2013-03-21

Applicant: RF MICRO DEVICES, INC.

Inventor： Nadim Khlat ,  Marcus Granger-Jones ,  Ruediger Bauder

IPC: H04B1/10

CPC classification number: H04B1/10 ,  H03H7/465 ,  H03H2007/013 ,  H03H2210/025 ,  H03H2210/033 ,  H03H2210/036 ,  H04L27/0002

Abstract: Radio frequency (RF) front end circuitry includes a notch diplexer. The notch diplexer includes a high pass filter coupled between a high band port and an antenna port, and a low pass notch filter coupled between a low band port and the antenna port. The high pass filter is adapted to receive a high band receive signal having a high band carrier frequency at the antenna port, and pass the high band receive signal to the high band port. The low pass notch filter is adapted to receive a low band transmit signal having a low band carrier frequency at the low band port, and attenuate distortion in the low band transmit signal about a notch stop band before passing the low band transmit signal to the antenna port. According to one embodiment, the notch stop band includes the high band carrier frequency.

Abstract translation: 射频（RF）前端电路包括一个切口双工器。 陷波分波器包括耦合在高频带端口和天线端口之间的高通滤波器以及耦合在低频带端口和天线端口之间的低通陷波滤波器。 高通滤波器适于在天线端口处接收具有高频带载波频率的高频带接收信号，并将高频带接收信号传送到高频带端口。 低通陷波滤波器适于在低频带端口接收具有低频带载波频率的低频带发射信号，并且在通过低频带发射信号到天线之前衰减低频带发射信号关于陷波阻挡带的失真 港口。 根据一个实施例，陷波阻挡带包括高频带载波频率。

公开(公告)号：US20130207714A1

公开(公告)日：2013-08-15

申请号：US13764324

申请日：2013-02-11

Applicant: RF MICRO DEVICES, INC.

Inventor： Ruediger Bauder ,  Nadim Khlat ,  Julio Costa ,  Jonathan Hammond

IPC: B81B7/00

CPC classification number: B81B7/0022 ,  B81B2201/014 ,  B81C1/00976 ,  H01H59/0009 ,  H04W52/02

Abstract: Pilot switch circuitry grounds a hot node (an injection node) of a microelectromechanical system (MEMS) switch to reduce or eliminate arcing between a cantilever contact and a terminal contact when the MEMS switch is opened or closed. The pilot switch circuitry grounds the hot node prior to, during, and after the cantilever contact and terminal contact of the MEMS come into contact with one another (when the MEMS switch is closed). Additionally, the pilot switch circuitry grounds the hot node prior to, during, and after the cantilever contact and terminal contact of the MEMS disengage from one another (when the MEMS switch is opened).

Abstract translation: 导向开关电路将微机电系统（MEMS）开关的热节点（注入节点）接地，以在MEMS开关打开或关闭时减少或消除悬臂触点和端子触点之间的电弧。 在MEMS悬臂接触之前，期间和之后，导频开关电路将热节点接地，并且MEMS的端子接触彼此接触（当MEMS开关闭合时）。 此外，导频开关电路在MEMS的彼此脱离接合之前，之中和之后，以及MEMS的彼此脱离接合（当MEMS开关断开时）接地。

公开(公告)号：US20130201880A1

公开(公告)日：2013-08-08

申请号：US13760159

申请日：2013-02-06

Applicant: RF MICRO DEVICES, INC.

Inventor： Ruediger Bauder ,  Marcus Granger-Jones ,  Nadim Khlat

IPC: H04L5/14

CPC classification number: H04L5/14 ,  H03H7/48 ,  H04B1/44 ,  H04B1/525 ,  H04L25/03878

Abstract: A tunable radio frequency (RF) duplexer is disclosed. The tunable RF duplexer includes a first hybrid coupler, a second hybrid coupler, and an RF filter circuit. The first hybrid coupler is operable to split an RF receive input signal into first and second RF quadrature hybrid receive signals (QHRSs). The first hybrid coupler is also operable to split an RF transmission input signal into first and second RF quadrature hybrid transmission signals (QHTSs). The RF filter circuit is operable to pass the first and second RF QHRSs to the second hybrid coupler and to reflect the first and second RF QHTSs back to the first hybrid coupler. Additionally, the second hybrid coupler is configured to combine the first and second RF QHRSs into an RF receive output signal, while the first hybrid coupler is configured to combine the first and second RF QHTSs into an RF transmission output signal.

Abstract translation: 公开了一种可调谐射频（RF）双工器。 可调RF双工器包括第一混合耦合器，第二混合耦合器和RF滤波器电路。 第一混合耦合器可操作以将RF接收输入信号分成第一和第二RF正交混合接收信号（QHRS）。 第一混合耦合器还可操作以将RF传输输入信号分成第一和第二RF正交混合传输信号（QHTS）。 RF滤波器电路可操作以将第一和第二RF QHRS传递到第二混合耦合器并将第一和第二RF QHTS反射回第一混合耦合器。 此外，第二混合耦合器被配置为将第一和第二RF QHRS组合成RF接收输出信号，而第一混合耦合器被配置为将第一和第二RF QHTS组合成RF发射输出信号。