| 摘要 |
PURPOSE:To attain heterodyne relaying with waveform equalization without using a modulator by providing an intermediate frequency band transversal filter, a digital demodulator and a control signal generator. CONSTITUTION:A receiving signal of radio frequency band is converted and amplified in an intermediate frequency band at a receiving section 1 and inputted to an intermediate frequency band transversal filter 8. The output of the filter 8 is branched into two; one is converted into a radio frequency band, amplified and transmitted from a transmission section 7, and the other is demodulated into 4-value base band signal of two rows at a digital demodulator 2 and compared and discriminated with plural threshold values predetermined at a control signal generator 5'. A heterodyne relay device with waveform equalizer having an adaptive transversal equalizer is obtained by controlling the filter 8 from the result of comparison and discrimination. |
