Optimization Procedure for Wideband Matched Feed Design

Michael Forum Palvig; Erik Jørgensen; Peter Meincke; Olav Breinbjerg

doi:10.1109/EuCAP.2016.7481136

Optimization Procedure for Wideband Matched Feed Design

Michael Forum Palvig, Erik Jørgensen, Peter Meincke, Olav Breinbjerg

TICRA

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Abstract

The inherently high cross polarization of prime focus offset reflector antennas can be compensated by launching higher order modes in the feed horn. Traditionally, the bandwidth of such systems is in the order of a few percent. We present a novel design procedure where the entire matched feed and reflector system can be efficiently optimized. This allows the design parameters of the matched feed to be directly related to the desired design goals in the secondary pattern over a specified band. Using this procedure, we present a design of a die-castable axially corrugated matched feed horn that provides an XPD improvement better than 7 dB over a 12% bandwidth for a reflector with an f/D of 0.5. An investigation of the mode requirement for an arbitrary circular aperture feed is also presented.

Original language	English
Title of host publication	Proceedings of 2016 10th European Conference on Antennas and Propagation
Number of pages	4
Publisher	IEEE
Publication date	2016
ISBN (Electronic)	978-8-8907-0186-3
DOIs	https://doi.org/10.1109/EuCAP.2016.7481136
Publication status	Published - 2016
Event	10th European Conference on Antennas and Propagation - Davos, Switzerland Duration: 10 Apr 2016 → 15 Apr 2016 Conference number: 10

Conference

Conference	10th European Conference on Antennas and Propagation
Number	10
Country/Territory	Switzerland
City	Davos
Period	10/04/2016 → 15/04/2016

Keywords

Matched feed
Reflector antenna
Horn antennas
Optimization
Antenna modelling

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10.1109/EuCAP.2016.7481136

20151102 MFP eucap16 ver4 rev 1 Accepted author manuscript, 1.22 MB

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title = "Optimization Procedure for Wideband Matched Feed Design",

abstract = "The inherently high cross polarization of prime focus offset reflector antennas can be compensated by launching higher order modes in the feed horn. Traditionally, the bandwidth of such systems is in the order of a few percent. We present a novel design procedure where the entire matched feed and reflector system can be efficiently optimized. This allows the design parameters of the matched feed to be directly related to the desired design goals in the secondary pattern over a specified band. Using this procedure, we present a design of a die-castable axially corrugated matched feed horn that provides an XPD improvement better than 7 dB over a 12% bandwidth for a reflector with an f/D of 0.5. An investigation of the mode requirement for an arbitrary circular aperture feed is also presented.",

keywords = "Matched feed, Reflector antenna, Horn antennas, Optimization, Antenna modelling",

author = "Palvig, {Michael Forum} and Erik J{\o}rgensen and Peter Meincke and Olav Breinbjerg",

year = "2016",

doi = "10.1109/EuCAP.2016.7481136",

language = "English",

booktitle = "Proceedings of 2016 10th European Conference on Antennas and Propagation",

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address = "United States",

note = "10th European Conference on Antennas and Propagation, EuCAP 2016 ; Conference date: 10-04-2016 Through 15-04-2016",

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TY - GEN

T1 - Optimization Procedure for Wideband Matched Feed Design

AU - Palvig, Michael Forum

AU - Jørgensen, Erik

AU - Meincke, Peter

AU - Breinbjerg, Olav

N1 - Conference code: 10

PY - 2016

Y1 - 2016

N2 - The inherently high cross polarization of prime focus offset reflector antennas can be compensated by launching higher order modes in the feed horn. Traditionally, the bandwidth of such systems is in the order of a few percent. We present a novel design procedure where the entire matched feed and reflector system can be efficiently optimized. This allows the design parameters of the matched feed to be directly related to the desired design goals in the secondary pattern over a specified band. Using this procedure, we present a design of a die-castable axially corrugated matched feed horn that provides an XPD improvement better than 7 dB over a 12% bandwidth for a reflector with an f/D of 0.5. An investigation of the mode requirement for an arbitrary circular aperture feed is also presented.

AB - The inherently high cross polarization of prime focus offset reflector antennas can be compensated by launching higher order modes in the feed horn. Traditionally, the bandwidth of such systems is in the order of a few percent. We present a novel design procedure where the entire matched feed and reflector system can be efficiently optimized. This allows the design parameters of the matched feed to be directly related to the desired design goals in the secondary pattern over a specified band. Using this procedure, we present a design of a die-castable axially corrugated matched feed horn that provides an XPD improvement better than 7 dB over a 12% bandwidth for a reflector with an f/D of 0.5. An investigation of the mode requirement for an arbitrary circular aperture feed is also presented.

KW - Matched feed

KW - Reflector antenna

KW - Horn antennas

KW - Optimization

KW - Antenna modelling

U2 - 10.1109/EuCAP.2016.7481136

DO - 10.1109/EuCAP.2016.7481136

M3 - Article in proceedings

BT - Proceedings of 2016 10th European Conference on Antennas and Propagation

PB - IEEE

T2 - 10th European Conference on Antennas and Propagation

Y2 - 10 April 2016 through 15 April 2016

ER -

Optimization Procedure for Wideband Matched Feed Design

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