公开(公告)号：US09929761B2

公开(公告)日：2018-03-27

申请号：US15062693

申请日：2016-03-07

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Marcus Granger-Jones

IPC: H04W4/00 ,  H04B1/18 ,  H04L5/14 ,  H04B1/04

CPC classification number: H04B1/18 ,  H03F3/24 ,  H03F2200/294 ,  H03F2200/451 ,  H04B1/0458 ,  H04B2001/0408 ,  H04L5/1469

Abstract: This disclosure relates to radio frequency (RF) front end circuitry for portable communication devices. In one embodiment, the RF front end circuitry includes an antenna, a switchable receive path configured to be opened and to be closed, a coaxial cable, and a low noise amplifier (LNA). The LNA is coupled so as to drive the coaxial cable. Thus, when the switchable receive path is closed, an RF receive signal received by the antenna can propagate through the switchable receive path to the LNA. Since the LNA is driving the coaxial cable, the RF receive signal can propagate through the coaxial cable without being excessively degraded. In this manner, embodiments of the RF front end circuitry can be utilized to provide antenna swapping and RF transceiver circuitry coupled to the coaxial cable can receive the RF receive signal from the coaxial cable without excessive degradation.

公开(公告)号：US09929752B2

公开(公告)日：2018-03-27

申请号：US14681725

申请日：2015-04-08

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Marcus Granger-Jones

IPC: H04B1/00 ,  H04B7/01 ,  H04B7/08 ,  H04B1/18

CPC classification number: H04B1/0057 ,  H04B1/18 ,  H04B7/01 ,  H04B7/0837

Abstract: A first RF receive diplexer, which includes a first hybrid RF coupler, a second hybrid RF coupler, and RF filter circuitry, is disclosed. The first hybrid RF coupler has a first main port, a first pair of quadrature ports, and a first isolation port, which is coupled to an RF antenna. The second hybrid RF coupler has a second main port and a second pair of quadrature ports. The RF filter circuitry is coupled between the first pair of quadrature ports and the second pair of quadrature ports. The first RF receive diplexer receives a first adjunct RF antenna receive signal via the first isolation port to provide a first adjunct RF receive signal via the second main port. The first RF receive diplexer receives a first RF transmit signal via the first main port to provide a first RF antenna transmit signal via the first isolation port.

公开(公告)号：US20170365394A9

公开(公告)日：2017-12-21

申请号：US14929608

申请日：2015-11-02

Applicant: RF Micro Devices, Inc.

Inventor： Dirk Robert Walter Leipold ,  George Maxim ,  Marcus Granger-Jones ,  Baker Scott

IPC: H01F27/28 ,  H03H7/38 ,  H03H7/46 ,  H04J1/08 ,  H04B1/40

CPC classification number: H01F27/2804 ,  H01F2027/2809 ,  H01L21/0276 ,  H01L28/10 ,  H01P7/06 ,  H01P7/065 ,  H01P7/08 ,  H03H7/38 ,  H03H7/463 ,  H03H9/24 ,  H04B1/40 ,  H04J1/08

Abstract: Embodiments of an apparatus are disclosed that includes a first three dimensional (3D) inductor and a second 3D inductor. The first three dimensional (3D) inductor has a first conductive path shaped as a first two dimensional (2D) lobe laid over a first 3D volume. In addition, the second 3D inductor has a second conductive path, wherein the second 3D inductor is inserted into the first 3D inductor so that the second conductive path at least partially extends through the first 3D volume. Since second 3D inductor is inserted into the first 3D inductor, the 3D inductors may be coupled to one another. Depending on orientation and distances of structures provided by the 3D inductors, the 3D inductors may be weakly or moderately coupled.

公开(公告)号：US09768838B2

公开(公告)日：2017-09-19

申请号：US14820006

申请日：2015-08-06

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Marcus Granger-Jones

IPC: H04B1/00 ,  H04B7/08 ,  H04B7/01 ,  H04B1/18 ,  H04B1/58

CPC classification number: H04B7/01 ,  H04B1/0057 ,  H04B1/18 ,  H04B1/58 ,  H04B7/0837

Abstract: A reconfigurable RF receive diplexer, which includes a first hybrid RF coupler, a second hybrid RF coupler, and reconfigurable RF filter circuitry, is disclosed. The reconfigurable RF receive diplexer receives a first adjunct RF antenna receive signal via a first isolation port to provide a first adjunct RF receive signal via a second main port. The reconfigurable RF receive diplexer further receives a first RF transmit signal via a first main port to provide a first RF antenna transmit signal via the first isolation port. The reconfigurable RF receive diplexer operates in each of a group of operating modes, such that during a first operating mode, a carrier frequency of the first adjunct RF antenna receive signal is within a first RF communications band; and during a second operating mode, a carrier frequency of the first adjunct RF antenna receive signal is within a second RF communications band.

公开(公告)号：US09735854B2

公开(公告)日：2017-08-15

申请号：US15130380

申请日：2016-04-15

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Marcus Granger-Jones

IPC: H04B1/44 ,  H04B7/08 ,  H04B1/00 ,  H04B1/3827

CPC classification number: H04B7/0868 ,  H04B1/0057 ,  H04B1/3827 ,  H04B7/0686

Abstract: The present disclosure relates to antenna swapping for a wireless, e.g., cellular, radio system. In particular, embodiments of a single-die antenna swapping switching circuit are disclosed. In some embodiments, the single-die antenna swapping switching circuit enables antenna swapping in a wireless device using only two coaxial cables or transmission line connections regardless of an order of an antenna multiplexer of the wireless device. This results in significant space savings, particularly as the order of the antenna multiplexer increases, compared to antenna swapping techniques that require a pair of coaxial cables or transmission lines for each order of the antenna multiplexer. In addition, the single-die antenna swapping switching circuit is designed to be located between a radio front-end system and the antenna multiplexer such that intermodulation distortion and harmonics resulting from the switches comprised in the single-die antenna swapping switching circuit are mitigated.

公开(公告)号：US09722639B2

公开(公告)日：2017-08-01

申请号：US14267095

申请日：2014-05-01

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Marcus Granger-Jones

IPC: H04B1/00 ,  H04L5/00

CPC classification number: H04B1/0064 ,  H04L5/001 ,  H04L5/0041

Abstract: Front end circuitry for a wireless communication system includes a first antenna node, a second antenna node, a first triplexer, a second triplexer, and front end switching circuitry coupled between the first triplexer, the second triplexer, the first antenna node, and the second antenna node. The front end switching circuitry is configured to selectively couple the first triplexer to one of the first antenna node and the second antenna node and couple the second triplexer to a different one of the first antenna node and the second antenna node. By using a first triplexer and a second triplexer in the mobile front end circuitry, the mobile front end circuitry may operate in one or more carrier aggregation configurations while reducing the maximum load presented to the first antenna node and the second antenna node, thereby improving the performance of the front end circuitry.

公开(公告)号：US20170207846A1

公开(公告)日：2017-07-20

申请号：US15130380

申请日：2016-04-15

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Marcus Granger-Jones

IPC: H04B7/08 ,  H04B1/3827 ,  H04B1/00

CPC classification number: H04B7/0868 ,  H04B1/0057 ,  H04B1/3827 ,  H04B7/0686

Abstract: The present disclosure relates to antenna swapping for a wireless, e.g., cellular, radio system. In particular, embodiments of a single-die antenna swapping switching circuit are disclosed. In some embodiments, the single-die antenna swapping switching circuit enables antenna swapping in a wireless device using only two coaxial cables or transmission line connections regardless of an order of an antenna multiplexer of the wireless device. This results in significant space savings, particularly as the order of the antenna multiplexer increases, compared to antenna swapping techniques that require a pair of coaxial cables or transmission lines for each order of the antenna multiplexer. In addition, the single-die antenna swapping switching circuit is designed to be located between a radio front-end system and the antenna multiplexer such that intermodulation distortion and harmonics resulting from the switches comprised in the single-die antenna swapping switching circuit are mitigated.

公开(公告)号：US09654151B2

公开(公告)日：2017-05-16

申请号：US15083791

申请日：2016-03-29

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Marcus Granger-Jones

IPC: H04B1/00 ,  H04B1/3805 ,  H04B1/48 ,  H04B7/06 ,  H04B7/08

CPC classification number: H04B1/006 ,  H04B1/3805 ,  H04B1/48 ,  H04B7/0602 ,  H04B7/0805

Abstract: RF front end circuitry includes primary transceiver circuitry associated with a primary antenna and secondary receiver circuitry associated with a secondary antenna. Generally, the primary transceiver circuitry and the primary antenna are located on one end of a mobile communications device, while the secondary receiver circuitry and the secondary antenna are located at an opposite end of the device. Cross-coupling connection lines run between the antenna switching circuitry for the primary antenna and the secondary antenna, and are reused to send a portion of primary RF transmit signals from the primary transceiver circuitry to the secondary receiver circuitry so that primary RF transmit signals coupled into the secondary receiver path via antenna-to-antenna coupling can be reduced.

公开(公告)号：US20160373176A1

公开(公告)日：2016-12-22

申请号：US15084142

申请日：2016-03-29

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Marcus Granger-Jones

IPC: H04B7/06 ,  H04B1/401 ,  H04B1/00

CPC classification number: H04B7/0608 ,  H04B1/0053 ,  H04B1/0064 ,  H04B1/0458 ,  H04B1/18 ,  H04B1/401 ,  H04B7/0602 ,  H04B7/0802

Abstract: Antenna swapping circuitry includes a first pole, a second pole, a first throw, a second throw, and a number of switching elements. A first switching element is coupled between the first pole and the first throw. A second switching element is coupled between the first pole and the second throw. A third switching element is coupled between the second pole and the first throw. A fourth switching element is coupled between the second pole and the second throw. A linearity of the first switching element and the fourth switching element is higher in a closed state of operation than in an open state of operation. A linearity of the second switching element and a third switching element is higher in an open state of operation than in a closed state of operation.

Abstract translation: 天线交换电路包括第一极，第二极，第一掷，第二掷和多个开关元件。 第一开关元件连接在第一极和第一掷之间。 第二开关元件耦合在第一极和第二掷之间。 第三开关元件耦合在第二极和第一掷之间。 第四开关元件耦合在第二极和第二掷之间。 在闭合运行状态下，第一开关元件和第四开关元件的线性度高于开启操作状态。 第二开关元件和第三开关元件的线性度在打开操作状态下高于在关闭操作状态。

公开(公告)号：US09503044B2

公开(公告)日：2016-11-22

申请号：US14815252

申请日：2015-07-31

Applicant: RF Micro Devices, Inc.

Inventor： Marcus Granger-Jones ,  Baker Scott ,  Ali Tombak

IPC: H01P5/18 ,  H03H7/46 ,  H01F38/14 ,  H01P1/10

CPC classification number: H03H7/468 ,  H01F21/12 ,  H01F38/14 ,  H01F2021/125 ,  H01F2038/146 ,  H01P5/185 ,  H03H7/48

Abstract: The present disclosure relates to a reconfigurable directional coupler with a variable coupling factor that can be changed in value as a function of a desired transmit band of operation. The reconfigurable directional coupler includes a primary inductive segment, secondary inductive segments, and switch circuitry configured to change the total coupling capacitance formed between the primary and secondary inductive segments by selectively switching the secondary inductive segments into the secondary signal path. Simultaneously, the mutual inductance and coupling factor between the primary and the secondary inductive segments are reconfigured.

Abstract translation: 本公开涉及具有可变耦合因子的可重新配置的定向耦合器，其可以根据期望的发射操作频带而变化。 可重构定向耦合器包括初级感应段，次级感应段和开关电路，其经配置以通过选择性地将次级感应段切换到辅助信号路径来改变形成在初级和次级感应段之间的总耦合电容。 同时，初级和次级感应段之间的互感和耦合因子被重新配置。