发明名称 |
FET Amplifier comprising a circulator for an input signal as an isolator |
摘要 |
In an FET amplifier comprising a series connection of a coaxial-to-waveguide converter and a circulator for supplying an FET with an input signal of a wide microwave band, such as an octave band between about 1 GHz and 12 GHz, a d.c. bias voltage is applied to the FET through the circulator from a terminator therefor. For this purpose, the terminator comprises an inner and an outer conductor insulated ohmically from each other and shunted for the microwave band, as by a capacitor of several picofarads. Preferably, a resistor and a third conductor are successively connected to the inner conductor with the capacitor placed at an end of the resistor remoter from the inner conductor and with a dummy for the input signal positioned between the outer and the third conductors.
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申请公布号 |
US4152666(A) |
申请公布日期 |
1979.05.01 |
申请号 |
US19780929052 |
申请日期 |
1978.07.28 |
申请人 |
NIPPON ELECTRIC CO LTD |
发明人 |
AKINAGA, WAKOTO;FUKUDA, SACHIRO;KAJIKAWA, MITSUGI |
分类号 |
H03F3/193;H03F3/60;(IPC1-7):H03F3/16 |
主分类号 |
H03F3/193 |
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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