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公开(公告)号：EP4187781B1
公开(公告)日：2024-10-16
申请号：EP20950261.6
申请日：2020-08-19
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公开(公告)号：EP3985866B1
公开(公告)日：2024-09-25
申请号：EP21189614.7
申请日：2021-08-04
CPC分类号： H04B7/0617 , H03F2200/45120130101 , H03F1/3247 , H03F3/68 , H04B17/354 , H04B17/15
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公开(公告)号：EP4432559A1
公开(公告)日：2024-09-18
申请号：EP23218786.4
申请日：2023-12-20
CPC分类号： H03F3/45475 , H03F3/387 , H03F1/26 , H03F1/52 , H03F2203/4513820130101 , H03F3/68
摘要： A high-voltage chopper-stabilized amplifier can include two paths to compensate for non-ideal electrical parameters. A first path, leading to a primary input of the amplifier, may include a first mux interface circuit to limit voltages at the primary input of the amplifier. A second path, leading to an auxiliary input of the amplifier, may include a chopper amplifier circuit. Despite the first mux interface circuit, a slew condition on the first path may excite a current in the second path that can negatively affect the signal source. Accordingly, the disclosed amplifier further includes a second mux interface circuit that can decouple the second path while a slew condition. The second mux interface circuit is driven by a window floating comparator, which is supplied according to the voltages on primary input. A settling enhancer circuit keeps, during slew condition, certain nodes on the second path at a reference voltage.
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公开(公告)号：EP4402799A1
公开(公告)日：2024-07-24
申请号：EP22783397.7
申请日：2022-08-23
发明人： YU, Xinmin , KU, Bon-Hyun , FENG, Yunfei , WANG, Chuan
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公开(公告)号：EP4325721A1
公开(公告)日：2024-02-21
申请号：EP22939047.1
申请日：2022-04-28
发明人： LIU, Haoyu , ZHENG, Shuangshuang
IPC分类号： H03F3/68
摘要： Disclosed are a package structure and a signal for signal amplification. The package structure for signal amplification includes a substrate, a first transistor on the substrate, a second transistor on the substrate, and a first sub-package structure on the substrate, the first sub-package structure comprising a third transistor and a fourth transistor, an output terminal of the third transistor and an output terminal of the fourth transistor being electrically connected respectively to a control terminal of the first transistor and a control terminal of the second transistor; wherein each of the third transistor and the fourth transistor comprises a silicon-based transistor, and at least one of the first transistor and the second transistor comprises a gallium nitride transistor.
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公开(公告)号：EP4191877A1
公开(公告)日：2023-06-07
申请号：EP21212565.2
申请日：2021-12-06
申请人： Eutelsat SA
摘要： The invention relates to a method for using a multiport amplifier under failure condition, the multiport amplifier being onboard a satellite and providing output signals in frequency reuse, wherein a number of microwave amplifiers greater than the number of redundancy microwave amplifiers fails to provide proper amplification, thus creating, for each input signal, an interference replica signal on all output ports but one, the method being carried out by a communication device, the communication device storing at least a plurality of phase and level reference values of at least one reference signal received from each output port of the plurality of output ports of the multiport amplifier, the method comprising at least the steps of:
- generating at least one useful signal being destined to be input on at least one input port of the input ports of the multiport amplifier,
- generating at least one correction signal being destined to be input on a correction input port corresponding to an output port to improve, the correction signal being generated from:
- the useful signal,
- a predetermined phase value and
- a predetermined level value,
the predetermined phase value and the predetermined level value being chosen from the stored phase and level reference values associated to the reference signal received from the output port to improve,
- multiplexing the correction signal with the useful signal,
- emitting, towards the satellite, the multiplexed correction signal and useful signal.-
公开(公告)号：EP4148989A1
公开(公告)日：2023-03-15
申请号：EP20939853.6
申请日：2020-06-08
摘要： An amplifier circuit is configured in such a way that the amplifier circuit includes: a first amplifier (3) to amplify a signal to be amplified; an output matching circuit (4) through which the signal amplified by the first amplifier (3) propagates; and a second amplifier (7) to amplify the signal which has propagated through the output matching circuit (4), and the output matching circuit (4) is a lumped constant circuit including multiple lumped constant elements, and, by using the multiple lumped constant elements, transforms the impedance seen on the second amplifier (7) side from the first amplifier (3) when the output power of the second amplifier (7) is lower than saturation electric power, to impedance higher than impedance seen on the second amplifier (7) side from the first amplifier (3) when the output power of the second amplifier is equal to the saturation electric power.
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公开(公告)号：EP4142150A1
公开(公告)日：2023-03-01
申请号：EP20939046.7
申请日：2020-06-04
摘要： A Doherty amplifier includes: a first amplifier (9) to amplify a first signal as an auxiliary amplifier in a case where a frequency of each of the first signal and a second signal is a first frequency, and amplify the first signal as a main amplifier in a case where the frequency of each of the first signal and the second signal is a second frequency; a second amplifier (10) to amplify the second signal as a main amplifier in a case where the frequency of each of the first signal and the second signal is the first frequency, and amplify the second signal as an auxiliary amplifier in a case where the frequency of each of the first signal and the second signal is the second frequency; and a combiner (11) to synthesize the first signal amplified by the first amplifier (9) and the second signal amplified by the second amplifier (10). In addition, the second amplifier (10) has a saturated output power larger than that of the first amplifier (9), and the combiner (11) transforms output impedance of the first amplifier (9) so that an imaginary component in the output impedance of the first amplifier (9) is reduced in a case where the first amplifier (9) amplifies the first signal as the main amplifier and the second amplifier (10) amplifies the second signal as an auxiliary amplifier.
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公开(公告)号：EP4128533A1
公开(公告)日：2023-02-08
申请号：EP21718738.4
申请日：2021-03-23
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