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

reportActive / Technical Report | Accession Number: ADA073356 | Open PDF

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

Author(s):
Winebarger, Ross
Author Organization(s):
COMPUTER SCIENCES CORP FALLS CHURCH VA
Descriptive Note:
Final technical rept.,
Supplementary Note:
Prepared in cooperation with Harris Corp., Melbourne, FL. Government Systems Group. See also Volume 1, AD-A073 429.
Pagination:
0040

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release, Document Partially Illegible
Distribution Statement:
Availability: Document Partially Illegible.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
SBI-AD-E100 272
Contract/Grant Number(s):
DCA100-76-C-0089
Monitor Series:
AD-E100 272
 Subject Terms
Joint Capability Areas:
JCA_6.1.2_Wireless Transmission; JCA_6.1_Information Transport; JCA_6_Net Centric; JCA_5_Command and Control; JCA_5.3_Planning
Modernization Areas:
Space
Communities of Interest:
Space
Descriptor(s):
*COMMUNICATION SATELLITE TERMINALS, *COMMUNICATION TERMINALS, COST EFFECTIVENESS, EFFICIENCY, TIME DIVISION MULTIPLEXING, POWER AMPLIFIERS, FREQUENCY DIVISION MULTIPLEXING, INSERTION LOSS, RADIO TRANSMISSION, BANDPASS FILTERS, X BAND, MULTIPLE ACCESS, DIPLEXERS
Field(s)/Group(s):
Radio Communications
Keyword(s):
Satellite communications, Earth terminals, Satellite terminals, Simultaneous transmission, DSCS(Defense Satellite Communications System), AN FSC 78, AN MSC 61
Report Date:
1979 May 01