| 摘要 |
<p>The adjustable frequency transceiver has a selective pass band filter centered on a frequency (f0) which is the main emission or reception frequency. The filters (5-8) have variable reactances adjusted by activators (18,20,22) which modify the filter response, and adapt the filter response selected under the control of a microprocessor (21). The reactances include variable capacitance diodes (12) in series with dielectric resonators (13). The activators also include circuitry for polarizing the anodes of the diodes.</p> |
