CIRCUIT FOR GENERATING PULSE OF POLAROTAR IN SATELLITE TELECOMMUNICATION RECEIVER

摘要

The circuit for changing the angle of a receiver aerial probe comprises a converter (3) for converting a sine wave input signal of a power source into a rectangular wave, a clock synchroniser for synchronising the converted rectangular wave with an HF clock source (CK1) to control the loading time of a counter (1), the counter loaded by the output of the synchroniser and for counting the pulse width of a polarotar as HF clock signals (CK1), a latch (2) for receiving the width data of the polarotar pulse to latch the counter and a counter disable circuit (4) for stopping the counting until the occurrence of the next loading signal when a carry signal occurs.