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公开(公告)号：US09838068B2
公开(公告)日：2017-12-05
申请号：US15027767
申请日：2014-10-15
申请人： NEC CORPORATION
发明人： Kazuaki Kunihiro , Shinichi Hori
IPC分类号： H04L5/16 , H04B1/44 , H03F3/217 , H03F3/195 , H03F3/213 , H03F3/24 , H04B1/3827 , H04L27/36 , H04L27/38
CPC分类号： H04B1/44 , H03F3/195 , H03F3/213 , H03F3/217 , H03F3/2171 , H03F3/2173 , H03F3/245 , H03F2200/171 , H03F2200/294 , H03F2200/331 , H03F2200/451 , H04B1/3833 , H04L27/36 , H04L27/38
摘要： A transmitter/receiver apparatus including: a transmitter/receiver terminal; a switching amplifier that includes a low-side switching element connected between a ground terminal and a pulse output terminal and a high-side switching element connected between the pulse output terminal and a power supply terminal and that outputs a pulse signal from the pulse output terminal; a filter that passes therethrough and outputs as a transmitted signal a predetermined frequency component of the pulse signal from a transmitter terminal; and a transmit/receive switch unit that switches the connection status between the transmitter/receiver terminal and the transmitter terminal and also switches the connection status between the transmitter/receiver terminal and a receiver terminal. During receiving, on the basis of the connection status between the transmitter/receiver terminal and the transmitter terminal, the low-side and high-side switching elements are fixed to conductive and non-conductive states, respectively, to non-conductive and conductive states, respectively, or both to non-conductive states.
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公开(公告)号：US09531327B2
公开(公告)日：2016-12-27
申请号：US14434137
申请日：2013-10-29
申请人： NEC CORPORATION
发明人： Kazuaki Kunihiro
CPC分类号： H03F1/0288 , H03F1/0222 , H03F1/0244 , H03F1/42 , H03F1/56 , H03F3/19 , H03F3/211 , H03F3/24 , H03F3/601 , H03F2200/102 , H03F2200/111 , H03F2200/451 , H03F2203/21106
摘要： When frequency allocation for a plurality of frequencies is in an intra-band CA relationship, a first amplifier is operated in class B, a second amplifier is operated in class C, and a power modulator is caused to supply a constant voltage to the first and second amplifiers so as to operate as a Doherty-type power amplifier. In addition, when the frequency allocation for the plurality of frequencies is in an inter-band non-contiguous CA relationship, the first and second amplifiers are operated in class B, and the power modulator is caused to supply a voltage proportional to the amplitude component of an input signal to the first and second amplifiers so as to operate as a power amplifier based on an ET system.
摘要翻译： 当多个频率的频率分配处于带内CA关系时，在B类中操作第一放大器，在C类中操作第二放大器，并且使功率调制器向第一放大器提供恒定的电压， 第二放大器，以便作为Doherty型功率放大器工作。 此外，当多个频率的频率分配处于带间不连续的CA关系时，在B类中操作第一和第二放大器，并且使功率调制器提供与振幅分量成比例的电压 输入信号到第一和第二放大器，以便作为基于ET系统的功率放大器工作。
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公开(公告)号：US20150263768A1
公开(公告)日：2015-09-17
申请号：US14428106
申请日：2013-09-17
申请人： NEC CORPORATION
发明人： Shinichi Hori , Kazuaki Kunihiro , Kazumi Shiikuma
IPC分类号： H04B1/04
CPC分类号： H04B1/04 , H03F3/195 , H03F3/211 , H03F3/2173 , H03F3/24 , H03F3/245 , H03F2200/336 , H03F2200/541 , H04B2001/0408
摘要： A transmitter includes: multiple digital transmitters which perform delta-sigma modulation on the same baseband signal; a combiner that combines the output signals from the plural digital transmitters and outputs the combined result; a control unit that generates an external signal different for every digital transmitter, to be supplied to each of the digital transmitters; and, an input means that supplies the different external signal for every digital transmitter, to the input terminal or the internal node of a delta-sigma modulator that performs the delta-sigma modulation, the delta-sigma modulator being provided for every digital transmitter.
摘要翻译： 发射机包括：在相同基带信号上执行Δ-Σ调制的多个数字发射机; 组合器，其组合来自多个数字发射机的输出信号并输出组合结果; 控制单元，其生成对每个数字发送器不同的外部信号，供给每个数字发送器; 以及向每个数字发射机提供不同的外部信号的输入装置，用于执行Δ-Σ调制的Δ-Σ调制器的输入端或内部节点，为每个数字发射机提供Δ-Σ调制器。
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公开(公告)号：US11158945B2
公开(公告)日：2021-10-26
申请号：US17032302
申请日：2020-09-25
申请人： NEC Corporation
发明人： Korkut Tokgoz , Naoki Oshima , Kazuaki Kunihiro
IPC分类号： H04M1/00 , H01Q3/40 , H04B7/0452 , H01Q1/24
摘要： A phased array antenna apparatus 10 according to an example embodiment includes at least four patch antennas 6 arranged in a two-dimensional array, and a semiconductor IC 1 connected to the patch antennas 6, in which the semiconductor IC 1 includes at least two first input/output terminals 5 through which a transmission/reception signal is input/output between the phased array antenna apparatus and an external apparatus connected to the phased array antenna apparatus, a plurality of second input/output terminals 4 connected to feeding points 8 of the patch antennas 6 through respective feed lines 7, the plurality of second input/output terminals being terminals through which the transmission/reception signal is input/output, and a matrix switch 2 capable of changing a connection relation between the first input/output terminals 5 and the second input/output terminals 4.
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公开(公告)号：US20150263678A1
公开(公告)日：2015-09-17
申请号：US14434137
申请日：2013-10-29
申请人： NEC CORPORATION
发明人： Kazuaki Kunihiro
CPC分类号： H03F1/0288 , H03F1/0222 , H03F1/0244 , H03F1/42 , H03F1/56 , H03F3/19 , H03F3/211 , H03F3/24 , H03F3/601 , H03F2200/102 , H03F2200/111 , H03F2200/451 , H03F2203/21106
摘要： When frequency allocation for a plurality of frequencies is in an intra-band CA relationship, a first amplifier is operated in class B, a second amplifier is operated in class C, and a power modulator is caused to supply a constant voltage to the first and second amplifiers so as to operate as a Doherty-type power amplifier. In addition, when the frequency allocation for the plurality of frequencies is in an inter-band non-contiguous CA relationship, the first and second amplifiers are operated in class B, and the power modulator is caused to supply a voltage proportional to the amplitude component of an input signal to the first and second amplifiers so as to operate as a power amplifier based on an ET system.
摘要翻译： 当多个频率的频率分配处于带内CA关系时，在B类中操作第一放大器，在C类中操作第二放大器，并且使功率调制器向第一放大器提供恒定的电压， 第二放大器，以便作为Doherty型功率放大器工作。 此外，当多个频率的频率分配处于带间不连续的CA关系时，在B类中操作第一和第二放大器，并且使功率调制器提供与振幅分量成比例的电压 输入信号到第一和第二放大器，以便作为基于ET系统的功率放大器工作。
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