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A Helix Excited Cir...
A Helix Excited Circularly Polarized Hollow Cylindrical Dielectric Resonator Antenna
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- Moteasselian, Alireza (författare)
- KTH,Elektroteknisk teori och konstruktion
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- Ellgardt, Anders (författare)
- KTH,Elektroteknisk teori och konstruktion
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- Jonsson, B. Lars G. (författare)
- KTH,Elektroteknisk teori och konstruktion
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(creator_code:org_t)
- 2013
- 2013
- Engelska.
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Ingår i: IEEE Antennas and Wireless Propagation Letters. - 1536-1225 .- 1548-5757. ; 12, s. 535-538
- Relaterad länk:
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https://urn.kb.se/re...
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visa fler...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- In this letter, we use a helix to excite two orthogonal HE11 delta modes in phase quadrature in a hollow cylindrical dielectric resonator antenna to generate circular polarization. As compared to our previous work, it is shown that replacing the cylindrical dielectric resonator antenna with a hollow cylindrical-shaped one leads to a significant enhancement in the 3-dB axial-ratio bandwidth. A design guideline is provided, and three design cases are presented. A prototype for one of the designs is fabricated and measured. Measured and simulated data are presented and discussed. It is shown that the 3-dB axial-ratio bandwidth increases as the wall thickness of the hollow cylindrical dielectric resonator decreases. Furthermore, a reduction in the wall thickness requires a longer helix exciter for similar performance.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Nyckelord
- Circular polarization
- dielectric resonator antenna (DRA)
- helix
- hollow cylindrical
- probe feed
- ring
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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