DOAJ Open Access 2016

A New Dual Circularly Polarized Feed Employing a Dielectric Cylinder-Loaded Circular Waveguide Open End Fed by Crossed Dipoles

Jae-Hoon Bang Soon-Woo Choi Jae-Woo Noh Joo-Young Lim Dong-Hyun Kim +2 lainnya

Abstrak

This paper presents a new dual circularly polarized feed that provides good axial ratio over wide angles and low cross-polarized radiation in backward direction. A circular waveguide open end is fed with two orthogonally polarized waves in phase quadrature by a pair of printed crossed dipoles and a compact connectorized quadrature hybrid coupler. The waveguide aperture is loaded with a dielectric cylinder to reduce the cross-polarization beyond 90 degrees off the boresight. The fabricated feed has, at 5.5 GHz, 6.33-dBic copolarized gain, 3-dB beamwidth of 106°, 10-dB beamwidth of 195°, 3-dB axial ratio beamwidth of 215°, maximum cross-polarized gain of −21.4 dBic, and 27-dB port isolation. The reflection coefficient of the feed is less than −10 dB at 4.99–6.09 GHz.

Topik & Kata Kunci

Electrical engineering. Electronics. Nuclear engineering Cellular telephone services industry. Wireless telephone industry

Penulis (7)

Jae-Hoon Bang

Soon-Woo Choi

Jae-Woo Noh

Joo-Young Lim

Dong-Hyun Kim

Dae-Oh Kim

Bierng-Chearl Ahn

Format Sitasi

APA MLA BibTeX

Bang, J., Choi, S., Noh, J., Lim, J., Kim, D., Kim, D. et al. (2016). A New Dual Circularly Polarized Feed Employing a Dielectric Cylinder-Loaded Circular Waveguide Open End Fed by Crossed Dipoles. https://doi.org/10.1155/2016/7570316

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Informasi Jurnal

Tahun Terbit: 2016
Sumber Database: DOAJ
DOI: 10.1155/2016/7570316
Akses: Open Access ✓