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公开(公告)号：US2067393A
公开(公告)日：1937-01-12
申请号：US70563634
申请日：1934-01-06
申请人： ERICH HABANN
发明人： ERICH HABANN
IPC分类号： H03F3/62
CPC分类号： H03F3/62 , Y10T29/49082
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公开(公告)号：US20240163069A1
公开(公告)日：2024-05-16
申请号：US18421466
申请日：2024-01-24
摘要： In one embodiment, a method receives a downstream signal and an upstream signal in a same frequency band. The downstream signal and the upstream signal are separated into a first path and a second path. The downstream signal using the first path and the upstream signal using the second path are amplified in an analog domain. The method isolates the downstream signal and the upstream signal from one another and sends the downstream signal downstream to a subscriber device and sends the upstream signal towards a full duplex node.
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公开(公告)号：US20230283242A1
公开(公告)日：2023-09-07
申请号：US18019077
申请日：2021-07-27
申请人： TECHNETIX B.V.
发明人： Martien RIJSSEMUS , Matthijs LARO , Dries ROODBEEN
CPC分类号： H03F1/26 , H03F3/62 , H03F2200/192 , H03F2200/204 , H03F2200/165 , H03F2200/171 , H03F2200/63
摘要： There is provided an amplifier device comprising a first directional coupler (12: 30, 32) and a second directional coupler (14: 30′, 32′) connected together so as to create separate upstream (16) and downstream (18) paths in which amplifier means (24, 24′) are located, wherein the first and second directional couplers (12, 14: 30, 32; 30′, 32′) are configured to have different signal loss characteristics, one of the directional couplers having low signal loss characteristics for upstream signals and the other directional coupler having low signal loss characteristics for downstream signals. The signal loss characteristics are preferably the coupling loss of each directional coupler (12, 14: 30, 32; 30′, 32′). The first and second directional couplers may each comprise a microstrip directional coupler (30; 30′) connected to a ferrite directional coupler (50; 50′).
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15.发明授权公开(公告)号：US10432146B2
公开(公告)日：2019-10-01
申请号：US15881272
申请日：2018-01-26
发明人： Jie Sun , Zhixiong Zeng , Shengbo Wu
摘要： Embodiments of the present application provide a power amplifier, a power amplification method, and a power amplification control apparatus and method. The power amplifier includes n Doherty power amplification units connected in parallel and an n-way outphasing combiner, where n≥2 and n is an integer. Each Doherty power amplification unit includes one input end and one output end. The n-way outphasing combiner includes n input ends and one output end. The output ends of the Doherty power amplification units are separately connected to the input ends of the n-way outphasing combiner.
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公开(公告)号：US10320342B2
公开(公告)日：2019-06-11
申请号：US15719538
申请日：2017-09-28
发明人： Shi Man Li
摘要： A bi-directional RF signal amplifier includes a RF input port and surge suppression circuitry downstream of the RF input port. First and second communications paths lead from the surge suppression circuitry to first and second RF output ports. The second communications path is considered non-interruptible and can support both downstream and upstream RF communications even in the absence of power being supplied to the RF signal amplifier. The surge suppression circuitry includes a data line connected to the RF input port. A first circuit path is electrically connected between the data line and ground. A gas discharge tube (GDT), within the first circuit path, acts as an open circuit when a voltage across the GDT is less than a predetermined value and acts as a short circuit when the voltage across the GDT exceeds the predetermined voltage. An electronic device is placed in series with the GDT within the first circuit path. The electronic device enables the second communications path of the RF signal amplifier to remain operable even if the GDT fails to a short circuit state due to a breakdown of the gases within the GDT.
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公开(公告)号：US20190132111A1
公开(公告)日：2019-05-02
申请号：US16177428
申请日：2018-11-01
发明人： Belal Hamzeh
摘要： An amplification subsystem for a communication system includes a downstream amplifier configured to transmit a downstream signal within a first frequency range, an upstream amplifier configured to transmit an upstream signal within a second frequency range, and a bidirectional amplifier configured to selectively transmit a mid-band signal in either of the upstream and downstream direction.
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公开(公告)号：US10270397B2
公开(公告)日：2019-04-23
申请号：US15698916
申请日：2017-09-08
申请人： NXP USA, Inc.
发明人： Igor Blednov
摘要： The embodiments described herein provide wideband highly asymmetrical power efficient amplifier device that include a compact input power distribution network with input termination circuit. The input termination circuit is configured to provide control of the power distribution at the amplifier input. In one embodiment, the input termination circuit is configured to generate and reflect a frequency dependent portion of an input signal back toward the amplifier device inputs. This input reflection controls the input power distribution and shape of time domain input signal in a way that can affect amplifier device efficiency and linearity.
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公开(公告)号：US10211797B2
公开(公告)日：2019-02-19
申请号：US15646991
申请日：2017-07-11
发明人： Jonathan Roderick
摘要： A bidirectional amplifier includes first and second ports, with a first summing node connected to the first port and a second summing node connected to the second port. First and second gain stages are connected between the first and second summing nodes, respectively, and a first node. First and second feedback stages are also connected between the first and second summing nodes, respectively, and the first node. The amplifier operates in a first mode in which an amplified version of a signal applied to the first port is provided at the second port, or a second mode in which an amplified version of a signal applied to the second port is provided at the first port. The first and second gain stages are preferably first and second common emitter cascode arrangements, and the first and second feedback stages are preferably first and second emitter followers.
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公开(公告)号：US20180302050A1
公开(公告)日：2018-10-18
申请号：US15673476
申请日：2017-08-10
发明人： Yo-Sheng LIN , Jin-You LIAO
CPC分类号： H03F3/62 , H01P5/10 , H03F3/211 , H03F3/245 , H03F3/45475 , H03F3/602 , H03F3/604 , H03F3/68 , H03F2200/06 , H03F2200/09
摘要： A multi-way power amplifier circuit includes two baluns and a number (2×N) of differential power amplifiers, where N≥2. Each balun generates a number (N) of corresponding differential intermediate signal pairs based on a respective to-be-amplified signal. Each differential power amplifier generates a respective differential amplified signal pair based on a respective differential intermediate signal pair. One of the baluns includes: a first transmission line and a second transmission line connected to each other; a number (N) of third transmission lines electromagnetically coupled to the first transmission line; and a number (N) of fourth transmission lines electromagnetically coupled to the second transmission line.
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