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Ka-Band Shaped Reflector Hybrid Antenna Illuminated by Microstrip-Fed Horn Array
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- Authors
- Young-Bae Jung, Seong-Ook Park
- Issue Date
- 2008-12
- Citation
- IEEE Transactions on Antennas and Propagation, v.56, no.12, pp.3863-3867
- ISSN
- 0018-926X
- Publisher
- IEEE
- Language
- English
- Type
- Journal Article
- Project Code
- 07MR4100, Intelligent Antenna Technology Development, Jeon Soon Ik
- Abstract
- The numerical simulation and experimental results of a shaped reflector hybrid antenna (SRHA) structure are presented. The SRHA design was optimized for a scan range of 짹3째 for a broadside of 45 째 in elevation to maintain a gain of more than 38 dBi and low side-lobes. The designed SRHA has an aperture size of less than 60 × 70 cm2 and an offset structure for a low profile to meet the need for a mobile satellite platform. The antenna geometry and reflector surface was determined by a geometrical optic (GO) method and the radiation pattern was obtained by physical optic (PO) analysis. A microstrip horn array was used as a feeder and was composed of eight elements. The number of array elements was chosen so as to maximize antenna performances, such as gain and efficiency, without overdesign. The SRHA breadboard, including a shaped reflector and a feed horn array, was fabricated and measured. The measured results showed good agreement with the simulation and met the performance required of SRHA. © 2008 IEEE.
- KSP Keywords
- Antenna performance, Feed horn, Horn array, Hybrid antenna, Microstrip-fed, Mobile satellite, Number of array elements, Numerical simulations, Physical Optics, Radiation Pattern, Satellite platform