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1.发明授权High-frequency power amplifier circuit and high-frequency power amplifier module 失效高频功放电路和高频功率放大器模块公开(公告)号：US06249186B1
公开(公告)日：2001-06-19
申请号：US09288558
申请日：1999-04-09
IPC分类号： H03F316
CPC分类号： H01L23/66 , H01L24/48 , H01L2224/48091 , H01L2224/48227 , H01L2924/00014 , H01L2924/01046 , H01L2924/01078 , H01L2924/1306 , H01L2924/13063 , H01L2924/19041 , H01L2924/30107 , H01L2924/3011 , H01L2924/3025 , H03F1/56 , H03F3/1935 , H01L2924/00 , H01L2224/45015 , H01L2924/207 , H01L2224/45099 , H01L2224/05599 , H01L2224/85399
摘要： An input matching circuit is provided having the output impedance-frequency characteristics wherein the output impedance shows a value approximately equal to that of the gate input impedance of the FET at the frequency of the objective signal to be amplified, and the output impedance shows a value not more than twice the gate input impedance of the FET at least at the entire frequencies from the frequency of the objective signal to be amplified through twice the frequency of the objective signal to be amplified so that the matching between the input previous stage circuit and the gate of the FET can be secured. Thereby, a high-frequency power amplifier circuit and a high-frequency power amplifier module, which can suppress the occurrence of distortion, perform stably, and get miniaturized, are configured.
摘要翻译： 提供具有输出阻抗频率特性的输入匹配电路，其中输出阻抗显示出在待放大的物镜信号的频率处的FET的栅极输入阻抗的值近似等于并且输出阻抗显示值 至少在来自要放大的物镜信号的频率的整个频率处FET的栅极输入阻抗的两倍以上将被放大的目标信号的频率的两倍，使得输入的前级电路和 可以确保FET的栅极。 由此，构成能够抑制失真的发生的高频功率放大电路和高频功率放大器模块稳定地进行小型化。
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2.发明申请公开(公告)号：US20090015473A1
公开(公告)日：2009-01-15
申请号：US12116883
申请日：2008-05-07
IPC分类号： H04B7/00
CPC分类号： H04B7/0865 , H01Q3/2605
摘要： An adaptive array antenna is disclosed which permits the circuit scale to be reduced by omitting a down-converter, an AD converter, and interconnects for them while controlling the directivity well. In one aspect, the array antenna comprises phase shift-amplitude control modules which accept signals received by antenna elements via an analog-to-digital converter. The value of any one of phase-amplitude change modules is set to 1. The values of the other phase-amplitude change modules are set to 0. Thus, the signal from any one antenna element is accepted. This sequence of operations is repeated as many times as there are antenna elements, whereby signals received by all the antenna elements can be accepted.
摘要翻译： 公开了一种自适应阵列天线，其允许通过省略下变频器，AD转换器和它们的互连来减少电路规模，同时很好地控制方向性。 在一个方面，阵列天线包括相移幅度控制模块，其接收由天线元件经由模 - 数转换器接收的信号。 相位幅度变化模块中的任何一个的值被设定为1.其他相位振幅变化模块的值被设定为0.因此，来自任何一个天线元件的信号被接受。 该操作序列重复与天线元件一样多的次数，由此可以接受由所有天线元件接收的信号。
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公开(公告)号：US07692494B2
公开(公告)日：2010-04-06
申请号：US11950347
申请日：2007-12-04
IPC分类号： H03F3/04
CPC分类号： H03F1/56 , H03F1/34 , H03F3/04 , H03F3/191 , H03F2200/111 , H03F2200/213 , H03F2200/222 , H03F2200/378 , H03F2200/42 , H03F2200/451 , H03H7/40
摘要： A variable frequency amplifier suffering less deterioration of strain characteristic and capable of operating at plural frequencies is disclosed. In one aspect, a changeable amplifier comprises an amplifying element, a changeable matching circuit disposed at an input side of the amplifying element and including a first variable capacity element connected in series with a signal conductor and a second variable capacity element connected in parallel with the signal conductor, and a control circuit for controlling the changeable matching circuit. Based on a feedback signal, the control circuit applies DC bias voltages to the first variable capacity element and the second variable capacity element of the changeable matching circuit and also applies thereto a correction signal.
摘要翻译： 公开了一种可变频率放大器，其应变特性较差并能够以多个频率工作。 一方面，可变放大器包括放大元件，设置在放大元件的输入侧的可变匹配电路，包括与信号导体串联连接的第一可变电容元件和与第一可变电容元件并联连接的第二可变电容元件 信号导体和用于控制可变匹配电路的控制电路。 基于反馈信号，控制电路将DC偏置电压施加到可变匹配电路的第一可变电容元件和第二可变电容元件，并向其施加校正信号。
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4.发明授权公开(公告)号：US07642962B2
公开(公告)日：2010-01-05
申请号：US12116883
申请日：2008-05-07
CPC分类号： H04B7/0865 , H01Q3/2605
摘要： An adaptive array antenna is disclosed which permits the circuit scale to be reduced by omitting a down-converter, an AD converter, and interconnects for them while controlling the directivity well. In one aspect, the array antenna comprises phase shift-amplitude control modules which accept signals received by antenna elements via an analog-to-digital converter. The value of any one of phase-amplitude change modules is set to 1. The values of the other phase-amplitude change modules are set to 0. Thus, the signal from any one antenna element is accepted. This sequence of operations is repeated as many times as there are antenna elements, whereby signals received by all the antenna elements can be accepted.
摘要翻译： 公开了一种自适应阵列天线，其允许通过省略下变频器，AD转换器和它们的互连来减小电路规模，同时很好地控制方向性。 在一个方面，阵列天线包括相移幅度控制模块，其接收由天线元件经由模 - 数转换器接收的信号。 相位幅度变化模块中的任何一个的值被设定为1.其他相位振幅变化模块的值被设定为0.因此，来自任何一个天线元件的信号被接受。 该操作序列重复与天线元件一样多的次数，由此可以接受由所有天线元件接收的信号。
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公开(公告)号：US20080285682A1
公开(公告)日：2008-11-20
申请号：US12101900
申请日：2008-04-11
申请人： Lichung Chu , Kiyoyuki Ihara , Kenji Kamitani , Fumitaka Iizuka
发明人： Lichung Chu , Kiyoyuki Ihara , Kenji Kamitani , Fumitaka Iizuka
IPC分类号： H04L27/36
CPC分类号： H04L27/364 , H04L2027/0016
摘要： A calibration apparatus for a quadrature modulation system with a quadrature modulation compensator and a logarithmic envelop detector, wherein a parameter update of the quadrature modulation compensator is derived by utilizing a transformed offset value and a transformed gain value of the logarithmic envelop detector as intermediate parameters, and the transformed offset and the transformed gain parameters are used in a training sequence of the quadrature modulation compensator.
摘要翻译： 一种用于具有正交调制补偿器和对数包络检测器的正交调制系统的校准装置，其中通过利用对数包络检测器的变换偏移值和变换增益值作为中间参数导出正交调制补偿器的参数更新， 并且变换的偏移和变换的增益参数在正交调制补偿器的训练序列中使用。
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