On the group delay effect of DSN microwave components on multimegabit telemetry
Abstract
When the gain and phase shift characteristics of the overall system between the modulator and demodulator are given, the group delay effect for the intended data rate can be assessed by examining the equation for the recovered signal for several rectangular pulse inputs with different duty cycles. For example, the group delay loss of 30 Mbit/sec telemetry with only a Block II X-band maser is less than 0.2 dB even with a 10-MHz center frequency offset.
- Publication:
-
The Telecommunications and Data Acquisition Report
- Pub Date:
- February 1982
- Bibcode:
- 1982tdar.nasa...59L
- Keywords:
-
- Deep Space Network;
- Delay;
- Microwave Equipment;
- Signal Processing;
- Telemetry;
- Time Lag;
- Equalizers (Circuits);
- Masers;
- Microwave Switching;
- Phase Shift Circuits;
- Space Communications, Spacecraft Communications, Command and Tracking