Fundamental challenges for wideband antenna elements in focal-plane arrays

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This paper discusses the main design challenges of wideband antenna elements which can be used in focal-plane arrays. A novel electrically-small wideband antenna is presented. It is based on a bow-tie antenna. The proposed antenna shows excellent input matching properties over a frequency band of more than one octave and nearly reaches the theoretical Chu-Harrington limit. It is shown that the centre element of a five-element feed array, operating at a centre frequency of 30 GHz, realizes an input matching bandwidth of 24.4 GHz.
Original languageEnglish
Title of host publicationProceedings of the The 9th European Conference on Antennas and Propagation (EuCAP'2015), 12-17 april 2015, Lisbon Portugal
Publication statusPublished - 2015

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