| 摘要 |
PURPOSE:To make the transmission band broad by using a deglitch circuit of a carrier noise produced at a demodulated output of balanced modulation to eliminate the high-frequency carrier noise produced in the demodulated output without of a low-pass filter. CONSTITUTION:An analog signal being a signal source output is fed to a balanced modulator 2 from an input terminal 1, subjected to double balanced modulation and led in a primary winding 3P of an isolation transformer 3. The transmission output produced in a secondary winding 3S is inputted to a demodulator 4 and a reflected output is led at the 2nd output terminal 5. A deglitch circuit 8 to suppress carrier leakage is added to the output of the demodulator 4 and an output 9 eliminating carrier noise is obtained. |
