| 摘要 |
The present invention relates to an ASK transceiver for an NRD guide capable of both transmission and reception in the ASK method using an NRD guide. According to the present invention, the oscillator is composed by the Gunn diode mount which is mounted bet ween upper and lower conductive plates, gap between which plates is less than a half wavelength of operational frequency. A half amount of the electric power is transmitted to the first circulator through the 3dB coupler, is modulated in the ASK modulator and is then radiated from the antenna after passing through the second circulator. The received signal is transmitted by the second circulator and is inputted to one port of the balance mixer. The intermediary frequency (IF) may be obtained by the Schottky diode mount on which two Schottky diodes are respectively mounted. |
