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公开(公告)号：US20190020316A1
公开(公告)日：2019-01-17
申请号：US15652079
申请日：2017-07-17
Applicant: pSemi Corporation
Inventor： Chih-Chieh Cheng , Tero Tapio Ranta
Abstract: A ultra-compact coupler designed to sample the actual output power of a power amplifier and which is “VSWR insensitive”, such that reflected power is essentially not coupled to a detector circuit and only forward power is detected and processed. In a first embodiment, a coupler is situated between the final amplifier stage of a power amplifier and an output impedance matching network, and is specially configured for operation in a low impedance environment in conjunction with a detector circuit, thereby substantially reducing the areal size of the coupler. In a second embodiment, a coupler is integrated within an output impedance matching network coupled to the final amplifier stage of a power amplifier so as to share an inductor between the coupler and the output impedance matching network, thereby further substantially reducing the areal size of the coupler.
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公开(公告)号：US20190013790A1
公开(公告)日：2019-01-10
申请号：US16029364
申请日：2018-07-06
Applicant: pSemi Corporation
Inventor： Emre Ayranci , Miles Sanner , Ke Li , James Francis McElwee , Tero Tapio Ranta , Kevin Roberts , Chih-Chieh Cheng
CPC classification number: H03H7/0161 , H03H7/38 , H03H2210/033 , H03H2210/036 , H04B1/0053 , H04B1/006 , H04B1/0067 , H04L5/001 , H04W28/065 , H04W72/0453
Abstract: A flexible multi-path RF adaptive tuning network switch architecture that counteracts impedance mismatch conditions arising from various combinations of coupled RF band filters, particularly in a Carrier Aggregation-based (CA) radio system. In one version, a digitally-controlled tunable matching network is coupled to a multi-path RF switch in order to provide adaptive impedance matching for various combinations of RF band filters. Optionally, some or all RF band filters include an associated digitally-controlled filter pre-match network to further improve impedance matching. In a second version, some or all RF band filters coupled to a multi-path RF switch include a digitally-controlled phase matching network to provide necessary per-band impedance matching. Optionally, a digitally-controlled tunable matching network may be included on the common port of the multi-path RF switch to provide additional impedance matching capability. In a third version, CA direct mapped adaptive tuning networks include filter tuning blocks for selected lower frequency bands.
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公开(公告)号：US10141927B2
公开(公告)日：2018-11-27
申请号：US15499770
申请日：2017-04-27
Applicant: pSemi Corporation
Inventor： Tero Tapio Ranta , Chih-Chieh Cheng
Abstract: A switch architecture having open reflective unselected ports. Signals can be selectively coupled between a common port and at least one selectable port through series connected switches. When one or more port is selected, the remaining ports are opened. In addition, associated “shuntable” switches from each of the selectable ports to ground are always open, regardless of the ON or OFF state of the series switches; thus, there is no normally active connection of the selectable ports to ground, but the presence of the shuntable switches provides electrostatic discharge protection for all ports. Embodiments of the invention allow configurability between a traditional architecture and an open reflective unselected port architecture, and include integrated circuit and field effect transistor embodiments.
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公开(公告)号：US20180159486A1
公开(公告)日：2018-06-07
申请号：US15372260
申请日：2016-12-07
Applicant: pSemi Corporation
Inventor： Tero Tapio Ranta , Chih-Chieh Cheng , Kevin Roberts
CPC classification number: H03F1/56 , H03F3/19 , H03F3/21 , H03F2200/387 , H03F2200/451
Abstract: An improved architecture for a radio frequency (RF) power amplifier, impedance matching network, and selector switch. One aspect of embodiments of the invention is splitting the functionality of a final stage impedance matching network (IMN) into two parts, comprising a base set of off-chip IMN components and an on-chip IMN tuning component. The on-chip IMN tuning component may be a digitally tunable capacitor (DTC). In one embodiment, an integrated circuit having a power amplifier, an on-chip IMN tuner, and a selector switch is configured to be coupled to an off-chip set of IMN components. In another embodiment, an integrated circuit having an on-chip IMN tuner and a selector switch is configured to be coupled through an off-chip set of IMN components to a separate integrated circuit having an RF power amplifier.
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公开(公告)号：US20240128945A1
公开(公告)日：2024-04-18
申请号：US18492357
申请日：2023-10-23
Applicant: pSemi Corporation
Inventor： Emre Ayranci , Miles Sanner , Ke Li , James Francis McElwee , Tero Tapio Ranta , Kevin Roberts , Chih-Chieh Cheng
IPC: H03H7/01 , H04B1/00 , H04W72/0453
CPC classification number: H03H7/0161 , H04B1/0053 , H04B1/006 , H04B1/0067 , H04W72/0453 , H04W28/065
Abstract: A flexible multi-path RF adaptive tuning network switch architecture that counteracts impedance mismatch conditions arising from various combinations of coupled RF band filters, particularly in a Carrier Aggregation-based (CA) radio system. In one version, a digitally-controlled tunable matching network is coupled to a multi-path RF switch in order to provide adaptive impedance matching for various combinations of RF band filters. Optionally, some or all RF band filters include an associated digitally-controlled filter pre-match network to further improve impedance matching. In a second version, some or all RF band filters coupled to a multi-path RF switch include a digitally-controlled phase matching network to provide necessary per-band impedance matching. Optionally, a digitally-controlled tunable matching network may be included on the common port of the multi-path RF switch to provide additional impedance matching capability. In a third version, CA direct mapped adaptive tuning networks include filter tuning blocks for selected lower frequency bands.
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Patent Agency Ranking
公开(公告)号：US11575351B2
公开(公告)日：2023-02-07
申请号：US17243038
申请日：2021-04-28
Applicant: pSemi Corporation
Inventor： Tero Tapio Ranta , Chih-Chieh Cheng , Kevin Roberts
Abstract: An improved architecture for a radio frequency (RF) power amplifier, impedance matching network, and selector switch. One aspect of embodiments of the invention is splitting the functionality of a final stage impedance matching network (IMN) into two parts, comprising a base set of off-chip IMN components and an on-chip IMN tuning component. The on-chip IMN tuning component may be a digitally tunable capacitor (DTC). In one embodiment, an integrated circuit having a power amplifier, an on-chip IMN tuner, and a selector switch is configured to be coupled to an off-chip set of IMN components. In another embodiment, an integrated circuit having an on-chip IMN tuner and a selector switch is configured to be coupled through an off-chip set of IMN components to a separate integrated circuit having an RF power amplifier.
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公开(公告)号：US10284151B2
公开(公告)日：2019-05-07
申请号：US15895863
申请日：2018-02-13
Applicant: pSemi Corporation
Inventor： Hossein Noori , Chih-Chieh Cheng
Abstract: A receiver front end capable of receiving and processing intraband non-contiguous carrier aggregate (CA) signals using multiple low noise amplifiers (LNAs) is disclosed herein. A cascode having a “common source” input stage and a “common gate” output stage can be turned on or off using the gate of the output stage. A first switch is provided that allows a connection to be either established or broken between the source terminal of the input stage of each cascode. Further switches used for switching degeneration inductors, gate/sources caps and gate to ground caps for each legs can be used to further improve the matching performance of the invention.
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公开(公告)号：US10700658B2
公开(公告)日：2020-06-30
申请号：US16029364
申请日：2018-07-06
Applicant: pSemi Corporation
Inventor： Emre Ayranci , Miles Sanner , Ke Li , James Francis McElwee , Tero Tapio Ranta , Kevin Roberts , Chih-Chieh Cheng
IPC: H04B1/04 , H04B1/40 , H01B1/00 , H04W88/06 , H03H7/38 , H03H7/01 , H04B1/00 , H04W72/04 , H04W28/06 , H04L5/00
Abstract: A flexible multi-path RF adaptive tuning network switch architecture that counteracts impedance mismatch conditions arising from various combinations of coupled RF band filters, particularly in a Carrier Aggregation-based (CA) radio system. In one version, a digitally-controlled tunable matching network is coupled to a multi-path RF switch in order to provide adaptive impedance matching for various combinations of RF band filters. Optionally, some or all RF band filters include an associated digitally-controlled filter pre-match network to further improve impedance matching. In a second version, some or all RF band filters coupled to a multi-path RF switch include a digitally-controlled phase matching network to provide necessary per-band impedance matching. Optionally, a digitally-controlled tunable matching network may be included on the common port of the multi-path RF switch to provide additional impedance matching capability. In a third version, CA direct mapped adaptive tuning networks include filter tuning blocks for selected lower frequency bands.
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公开(公告)号：US10587229B1
公开(公告)日：2020-03-10
申请号：US16216896
申请日：2018-12-11
Applicant: pSemi Corporation
Inventor： Damian Costa , Chih-Chieh Cheng , Tero Tapio Ranta
Abstract: Methods and devices for providing a feedback network in a multi-stage power amplifier are described. According to one aspect, a final amplifier of the multi-stage power amplifier is a cascode amplifier. The feedback network is placed between an output of the final amplifier and an output of a driver amplifier. The feedback network can decrease a mismatch between the output impedance of the final amplifier and a load presented to the final amplifier. In addition, the feedback network can change a load presented to the driver amplifier and thereby allow the transfer functions of each stage to be tuned so that the overall transfer function of the multi-stage amplifier becomes more linear.
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公开(公告)号：US20190305733A1
公开(公告)日：2019-10-03
申请号：US15942328
申请日：2018-03-30
Applicant: pSemi Corporation
Inventor： Damian Costa , Chih-Chieh Cheng , Richard B. Whatley , Tero Tapio Ranta
Abstract: Methods and devices for improving AM-AM and AM-PM performance of an RF amplifier are presented. According to one aspect, input and output harmonic terminations coupled to the input and output of the amplifier are tuned at frequencies near to, but different than, a second harmonic frequency of an RF signal to be amplified. Improved AM-AM and AM-PM performance is obtained when i) the input harmonic termination is tuned at a frequency that is below the second harmonic frequency and the output harmonic termination is tuned at a frequency that is above the second harmonic frequency, and ii) the input harmonic termination is tuned at a frequency that is farther away from the second harmonic frequency than the frequency used for tuning of the output harmonic termination.
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