发明名称 |
Frequency modulation-type transmitting apparatus |
摘要 |
A front-end processing circuit applies predetermined processing to an input signal and outputs a processed signal. A frequency modulation circuit applies frequency modulation to the output signal of the front-end processing circuit and outputs a processed signal. The front-end processing circuit includes a variable amplifier and a level detector. The variable amplifier receives a feedback signal and amplifies a signal by an amplification factor corresponding to the feedback signal. The level detector outputs the feedback signal to the variable amplifier in accordance with a level of a signal obtainable in a circuit succeeding the variable amplifier. The front-end processing circuit maintains the signal supplied to the frequency modulation circuit at a constant level.
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申请公布号 |
US8009835(B2) |
申请公布日期 |
2011.08.30 |
申请号 |
US20060528874 |
申请日期 |
2006.09.28 |
申请人 |
SANYO ELECTRIC CO., LTD. |
发明人 |
KINOSHITA MASAKI;TAKAHASHI NOBUO;TERADA SATOSHI |
分类号 |
H04H20/47;H03G3/00;H04H20/48;H04H20/88;H04H40/36;H04H40/45 |
主分类号 |
H04H20/47 |
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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