TD-3 System: Microwave Generator

Abstract

The TD-3 microwave generator furnishes all of the heal oscillator power used in a TD-3 transmitter-receiver bay. It delivers an output power of 0.6W at a frequency which can be adjusted to any one of 17 frequencies. In designing the generator special emphasis was placed on reliability, ease of tuning, and on obtaining a carrier with high spectral purity and frequency stability. This paper describes the generator's circuit con figuration and operation, and discusses important design considerations and techniques.

The AR6A Single-Sideband Microwave Radio System: Microwave Carrier Supply

“…This provides for 512 steps in either direction to compensate for increase or decrease in frequency. This corresponds to ±1600 Hz at 125 MHz or about ±1.28 parts in 10 6 •…”

“…6 The filter is a coaxial reentrant cavity with an unloaded Q of about 3000. Its 3-dB bandwidth is about 300 kHz, with about 2-dB insertion loss.…”