Amplitude and phase modulator with feedback circuit |
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| 申请号 | JP9455888 | 申请日 | 1988-04-19 | 公开(公告)号 | JPH01268211A | 公开(公告)日 | 1989-10-25 |
| 申请人 | Toshiba Tesuko Kk; | 发明人 | MIYAKE HISAO; | ||||
| 摘要 | PURPOSE:To generate high-power signals having an excellent linearity and phase stability from a small-sized power amplifier by feeding back the output of the power amplifier to amplitude modulators after rectification by using two each of double-balanced mixers and comparators. CONSTITUTION:By feeding back the output of the power amplifier 11 to the amplitude modulators 3 and 5 after rectification by using two each of the double-balanced mixers 14 and 15 and comparators 20 and 21, the amplitude and phase distortion of the power amplifier 11 are automatically corrected. Therefore, high-power signals having an excellent linearity and phase stability can be generated from the small-sized power amplifier and the need of a large- sized power amplifier is eliminated. Thus a small-sized power amplifier having an excellent power efficiency and small constitution can be used for generating the high-power signals. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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