A DIPLEXER USING HYBRID JUNCTIONS

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Abstract:

A study was made of a diplexer. This filter connects a transmitter and a receiver to a common antenna so that both may be operated simultaneously when their frequencies are not identical. The diplexer described uses hybrid junctions, is easily tuned and can be designed in a simple, straightforward manner. Its maximum powerhandling capacity is the same as that of the connecting transmission line, and its insertion loss is unusually low. An analysis of this filter and of a long-stub filter is presented, in addition to the design procedure for, and the experimental results obtained with, a specific model. A discussion of its use in place of an in-line long-stub, or cavity, filter is included and the general configuration of a four-frequency multiplexer is presented. Additional curves which can be used to design similar units using the popular standard waveguide sizes are included. Author

Author(s):
Ricardi, L. J.
Author Organization(s):
MASSACHUSETTS INST OF TECH LEXINGTON LINCOLN LAB
Pagination:
0001

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR255TDR62 75, ESD-TDR62 75
Contract/Grant Number(s):
AF19 604 7400
Monitor Series:
TDR62 75
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*MULTIPLEXING, *POWER DIVIDERS, *WAVEGUIDE COUPLERS, *WAVEGUIDE FILTERS, COAXIAL FILTERS, MATHEMATICAL ANALYSIS, MICROWAVE FREQUENCY, MULTIPLE OPERATION, RADAR RECEIVERS, RADAR TRANSMITTERS, RADIO RECEIVERS, RADIO TRANSMITTERS, SUPERHIGH FREQUENCY, SWITCHING CIRCUITS, THEORY, TRANSMISSION LINES, ULTRAHIGH FREQUENCY
Report Date:
1962 Feb 07