| 摘要 |
<p>Modern airborne systems shall be of less in weight and size. To reduce the size and weight, Hybrid Micro Electronic Technology is used in UHF Communication System. Automatic Voltage Generator Hybrid shall generate the tuning voltage required for Voltage Controlled Oscillator (VCO) circuit for generation system frequency. This AVG Hybrid takes analog voltage from DAC. DACS gets data from Micro Controller IC where tuning data is stored. Depending up on the system frequency corresponding DAC voltage is provided to AVG Hybrid. AVG Hybrid amplifies and filters through OPAMP circuit. The amplified and filtered tuning voltage is fed to VCO through driving transistor stage. Apart from tuning voltage generation circuit, this Hybrid also has circuit to provided required commands for System operation.</p> |
