Citation
Abstract
The DSS 13 26-meter antenna with the second generation S/X feedcone was tested to determine the dual S- and X-band (2.1 to 2.3 GHz and 7.1 to 8.5 GHz, respectively) transmit and receive performance. Measurements were conducted using the 20-kW transmitters at S- and X-band while simultaneously receiving S- and X-band. This system proved to be very quiet compared with the other DSN antennas. Under normal tracking configurations, no noise burst or intermodulation product (IMP) activity was detectable to the -175-dBm level. To prove the instrumentation’s ability to detect such phenomena, an IMP generator was introduced onto the system with positive, verifiable results. The IMP occurred at the —162-dBm level, accompanied by moderate noise burst activity, and was readily repeatable. The measurement also showed the possible need for additional fourth-channel filtering in the system to reduce the effect of the transmitter power on the LNAs.
Details
- Volume
- 42-94
- Published
- August 15, 1988
- Pages
- 93–102
- File Size
- 430.6 KB