| DOI | Resolve DOI: https://doi.org/10.1109/LAWP.2020.3017185 |
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| Author | Search for: Du, XuanORCID identifier: https://orcid.org/0000-0002-7586-591X; Search for: Johnson, ThomasORCID identifier: https://orcid.org/0000-0003-0727-7304; Search for: Landecker, Tom1ORCID identifier: https://orcid.org/0000-0003-1455-2546; Search for: Veidt, Bruce1ORCID identifier: https://orcid.org/0000-0003-3182-2720 |
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| Affiliation | - National Research Council of Canada. Herzberg Astronomy and Astrophysics
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| Format | Text, Article |
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| Subject | coaxial waveguide; iris matching network; radio telescope feed antenna; wideband |
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| Abstract | The design of a 2.2 to 4.4 GHz coaxial waveguide feed antenna for radio telescopes is described. An iris matching network is designed to improve the unmatched aperture reflection coefficient from −6.7 to −12 dB over a 2:1 bandwidth ratio. An efficient method of optimizing the irises over a wideband is presented. The properties of wideband iris matching networks including their behavior as bandpass structures are discussed. The far-field beamwidth of the feed is held constant across the octave band by a corrugated choke. Measured radiation properties agree closely with simulation. |
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| Publication date | 2020-08-17 |
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| Publisher | IEEE |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | ec00f725-259b-4afe-94ad-c0e6f9681c6d |
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| Record created | 2021-12-17 |
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| Record modified | 2021-12-17 |
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