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- Title
High Power Combline Filter for Deep Space Applications.
- Authors
Subramanyam, A. V. G.; Reddy, D. Siva; Hariharan, V. K.; Srinivasan, V. V.; Chakrabarty, Ajay
- Abstract
An S-band, compact, high power filter, for use in theMars OrbiterMission (MOM) of Indian Space Research Organization (ISRO), has been designed and tested formultipaction. Thetelemetry, tracking, and commanding (TT&C) transponder ofMOMis required to handle continuous RF power of 200W in the telemetry path besides simultaneously maintaining an isolation of greater than 145 dBc to its sensitive telecommand path. This is accomplished with the help of a complex diplexer, requiring high power, high rejection transmit path filter, and a low power receive path filter. To reduce the complexity in the multipaction-free design and testing, the transmit path filter of the diplexer is split into a low rejection filter integral to the diplexer and an external high rejection filter. This paper highlights the design and space qualification phases of this high rejection filter. Multipaction test results with 6 dB margin are also presented. Major concerns of this filter design are isolation, insertion loss, and multipaction. Mission performance of the on-board filter is normal.
- Subjects
ELECTRIC power filters; ENERGY bands; INDIAN Space Research Organisation; ELECTRIC power transmission; MARS' orbit
- Publication
International Journal of Microwave Science & Technology, 2014, p1
- ISSN
1687-5826
- Publication type
Article
- DOI
10.1155/2014/396494