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1. 发明授权

US5614863A Method and system for increasing the power efficiency of a balanced amplifier/antenna combination 失效
标题翻译：用于增加平衡放大器/天线组合的功率效率的方法和系统
公开(公告)号：US5614863A
公开(公告)日：1997-03-25
申请号：US550948
申请日：1995-10-31
申请人： John A. Pierro , Richard L. Clouse, Jr. , Ronald Rudish
发明人： John A. Pierro , Richard L. Clouse, Jr. , Ronald Rudish
IPC分类号： H01Q3/26 , H03F3/24 , H03F3/26 , H04B1/04 , H04B1/18
CPC分类号： H03F3/245
摘要： A system for increasing the power efficiency of a balanced amplifier driven antenna arrangement includes a push-pull class B power amplifier circuit which is responsive to a periodic, time varying input signal and generates at least two output signals in response thereto. The arrangement also includes a balanced antenna exhibiting a relatively high impedance at the second harmonic of the input signal. The arrangement further includes at least one transmission line operatively coupled between the power amplifier circuit and the balanced antenna to provide the at least two output signals to the balanced antenna. The at least one transmission line has a length which is one-eighth of the wavelength of the input signal or odd multiples thereof, and thereby reflects back to the power amplifier circuit a substantially short circuit at the second harmonic of the input signal.
摘要翻译：用于增加平衡放大器驱动天线布置的功率效率的系统包括推挽类B功率放大器电路，其响应于周期性的时变输入信号并响应于此产生至少两个输出信号。该布置还包括在输入信号的二次谐波处呈现相对较高阻抗的平衡天线。该布置还包括至少一个传输线，其可操作地耦合在功率放大器电路和平衡天线之间，以将至少两个输出信号提供给平衡天线。至少一条传输线的长度是输入信号的波长的八分之一或其奇数倍，从而在输入信号的二次谐波处反射回功率放大器电路基本上短路。

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