IEICE Transactions on Communications
Online ISSN : 1745-1345
Print ISSN : 0916-8516

This article has now been updated. Please use the final version.

Dual-circularly Polarized Offset Parabolic Reflector Antenna with Microstrip Antenna Array for 12-GHz Band Satellite Broadcasting Reception
Masafumi NAGASAKASusumu NAKAZAWAShoji TANAKA
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JOURNAL RESTRICTED ACCESS Advance online publication

Article ID: 2017ISP0012

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Abstract

Japan Broadcasting Corporation (NHK) started test satellite broadcasting of ultra-high-definition television (UHDTV) on August 1st, 2016. The test broadcasting is being provided in the 12-GHz (11.7 to 12.75 GHz) band with right-hand circular polarization. In 2018, left-hand circular polarization in the same frequency band will be used for satellite broadcasting of UHDTV. Because UHDTV satellite broadcasting uses the 16APSK modulation scheme, which requires a higher carrier-to-noise ratio than that used for HDTV in Japan, it is important to mitigate the cross-polarization interference. Therefore, we fabricated and tested a dual-circularly polarized offset parabolic reflector antenna that has a feed antenna composed of a 2 × 2 microstrip antenna array, which is sequentially rotated to enhance the polarization purity. Measured results showed that the fabricated antenna complied with our requirements, a voltage standing wave ratio of less than 1.4, antenna gain of 34.5 dBi (i.e., the aperture efficiency was 69%), and cross-polarization discrimination of 28.7 dB.

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© 2017 The Institute of Electronics, Information and Communication Engineers
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