发明名称 |
Aircraft shorted loop antenna with impedance matching and amplification at feed point |
摘要 |
An active antenna system for an airborne high frequency single sideband receiver comprised of a shorted loop type antenna having an inductive characteristic over the frequency range of 2.0 to 10.0 MHz and which is tuned to resonance at a selected operating frequency by shunting the antenna at its feedpoint by selectively switched sets of voltage variable capacitors. Also coupled to the feedpoint is a field effect transistor which is adapted to provide radio frequency amplification. Impedance matching between the output of the field effect transistor and the input of a radio frequency receiver is further provided by a transistor configured as an emitter follower.
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申请公布号 |
US4510500(A) |
申请公布日期 |
1985.04.09 |
申请号 |
US19830461766 |
申请日期 |
1983.01.28 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ARMY |
发明人 |
BRUNE, JOHN F. |
分类号 |
H01Q1/28;H01Q7/00;(IPC1-7):H01Q1/28 |
主分类号 |
H01Q1/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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