发明名称 |
BUFFER AMPLIFIER CIRCUIT USED IN WIDEBAND TUNER |
摘要 |
<p>A buffer amplifier circuit of a wideband tuner has an output transistor. The output terminal of this transistor is grounded through a matching transformer having two taps. One of the taps constitutes a terminal through which the output signal is delivered to a mixer circuit, while the other tap is grounded through a capacitor which constitutes, in cooperation with the matching transformer, a trap circuit. This trap circuit is adapted to trap a frequency which is about twice as high as the low region oscillation frequency of a local oscillator which produces an input to the buffer amplifier circuit.</p> |
申请公布号 |
CA1149878(A) |
申请公布日期 |
1983.07.12 |
申请号 |
CA19800359029 |
申请日期 |
1980.08.26 |
申请人 |
ALPS ELECTRIC CO., LTD. |
发明人 |
USHIDA, SUSUMU;YANAGIDA, HIROYUKI |
分类号 |
H03F1/26;H03F3/191;H04B1/10;H04B1/26;H04N7/10;(IPC1-7):H04B1/28 |
主分类号 |
H03F1/26 |
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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