Parametric surface acoustic wave amplifier |
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| 申请号 | JP15304582 | 申请日 | 1982-09-01 | 公开(公告)号 | JPS5941911A | 公开(公告)日 | 1984-03-08 |
| 申请人 | Clarion Co Ltd; | 发明人 | MINAGAWA SHIYOUICHI; OKAMOTO TAKESHI; | ||||
| 摘要 | PURPOSE:To perform a sufficient amplification even with a medium showing the dispersion characteristic, by causing the parametric interaction only when waves satisfying a certain condition are inputted on the frequency dispersion characteristic and propagating these waves through the medium. CONSTITUTION:If non-linearity of surface charge capacity or the like exists on the Si surface just under a pump electrode 6 when an input surface acoustic wave 9 is propagated on the pump electrode 6, the piezoelectric potential due to the input surface acoustic wave propagated in this part and the potential of a pump power source 7 applied to the electrode 6 cause the parametric interaction through the surface charge capacity non-linear characteristic to generate an idler wave as a new wave. Energy is given to surface acoustic waves 10 and 11 from the power source 7 by this parametric interaction, and they are increased and propagated on the medium and are converted to electric signals by an output transducer 5 and are outputted from terminals 5A and 5B. | ||||||
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| 说明书全文 | |||||||
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