Earth Terminal Subsystem Study. Volume 4 - Transmitter Combining for Simultaneous Transmission of FDMA and TDMA Carriers.

Abstract

This report addresses alternative methods of combining high-power TDMA and FDMA X-band carriers for simultaneous transmission from Defense Satellite Communications System (DSCS) earth terminals. The TDMA signal is assumed to be in Channel 1 of the DSCS III frequency plan, with the FDMA carriers in Channels 2 and 6 (on both sides of the TDMA signal). Three alternative diplexer configurations are described: (1) a conventional bandpass filter; (2) a band-stop filter; and (3) a dual E-stub filter. The three configurations are evaluated in terms of insertion loss, phase linearity, and complexity. It is concluded that the bandpass filter approach is the preferred approach, based on its low-loss characteristics and its design simplicity. (Author)

Open PDF

Document Details

Document Type
Technical Report
Publication Date
May 01, 1979
Accession Number
ADA073356

Entities

People

  • Ross Winebarger

Organizations

  • Computer Sciences Corporation

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Amplifiers
  • Artificial Satellites
  • Bandpass Filters
  • Bandwidth
  • Computer Programs
  • Computer Science
  • Computers
  • Filters
  • Frequency
  • Frequency Bands
  • Governments
  • Insertion Loss
  • Power Amplifiers
  • Radio Frequency Devices
  • Satellite Communications
  • Security
  • Transmitters

Readers

  • Computer Networking
  • Microwave Engineering.

Technology Areas

  • Space