Feed Mismatch Due to Reflectors Revisited

Bird, TS

Feed Mismatch Due to Reflectors Revisited

Bird, TS

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Publisher:: Institute of Electrical and Electronics Engineers
Publication Type:: Journal Article
Citation:: IEEE Transactions on Antennas and Propagation, 2022, 70, (8), pp. 7164-7168
Issue Date:: 2022-01-01

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Field	Value	Language
dc.contributor.author	Bird, TS
dc.date.accessioned	2023-07-01T23:04:08Z
dc.date.available	2023-07-01T23:04:08Z
dc.date.issued	2022-01-01
dc.identifier.citation	IEEE Transactions on Antennas and Propagation, 2022, 70, (8), pp. 7164-7168
dc.identifier.issn	0018-926X
dc.identifier.issn	1558-2221
dc.identifier.uri	http://hdl.handle.net/10453/171079
dc.description.abstract	An expression for the reflection coefficient in a feed resulting from scattering from a neighboring reflector is derived from the reaction theorem. This expression includes the influence of an external interfering source as well. An asymptotic formula for this reflection coefficient is derived, which simplifies for an arbitrary shaped symmetrical reflector. This formula is shown to be accurate to second order. For a paraboloid this is identical to one derived by Silver except for an additional 180-deg. phase factor. Results are given for a parent parabola, one loaded with a cone at its vertex and another for a reflector that is shaped to minimize reflection while maintaining efficiency over a 20% bandwidth. The effect of an interfering on-axis source on the mismatch is described through an asymptotic approximation.
dc.language	en
dc.publisher	Institute of Electrical and Electronics Engineers
dc.relation.ispartof	IEEE Transactions on Antennas and Propagation
dc.relation.isbasedon	10.1109/TAP.2022.3149582
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0906 Electrical and Electronic Engineering, 1005 Communications Technologies
dc.subject.classification	Networking & Telecommunications
dc.title	Feed Mismatch Due to Reflectors Revisited
dc.type	Journal Article
utslib.citation.volume	70
utslib.for	0906 Electrical and Electronic Engineering
utslib.for	1005 Communications Technologies
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Electrical and Data Engineering
utslib.copyright.status	closed_access	*
pubs.consider-herdc	false
dc.date.updated	2023-07-01T23:04:07Z
pubs.issue	8
pubs.publication-status	Published
pubs.volume	70
utslib.citation.issue	8

Abstract:

An expression for the reflection coefficient in a feed resulting from scattering from a neighboring reflector is derived from the reaction theorem. This expression includes the influence of an external interfering source as well. An asymptotic formula for this reflection coefficient is derived, which simplifies for an arbitrary shaped symmetrical reflector. This formula is shown to be accurate to second order. For a paraboloid this is identical to one derived by Silver except for an additional 180-deg. phase factor. Results are given for a parent parabola, one loaded with a cone at its vertex and another for a reflector that is shaped to minimize reflection while maintaining efficiency over a 20% bandwidth. The effect of an interfering on-axis source on the mismatch is described through an asymptotic approximation.

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http://hdl.handle.net/10453/171079