On performance of hidden car roof antennas

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Hidden antenna solutions for car roofs are of current interest to car manufacturers, to avoid having larger shark-fin based antenna systems to support growing number of wireless services. However, there are only a few studies in the literature on the integration of hidden antennas, particularly in relation to realistic roofs and propagation channels. This paper investigates the performance impact of hiding car roof-top antennas in roof cavities for an outdoor channel defined by an angular power spectrum. Different 700 MHz antenna concepts and roof cavity locations are considered for an idealized flat roof as well as a real curved roof. The results reveal that hiding antennas in cavities result in a minor mean effective gain (MEG) penalty of up to 1 dB, for a flat rectangular car roof. However, a realistic roof curvature can largely offset the MEG loss. Moreover, different monopole-based antenna concepts can provide MEG variations of up to nearly 3 dB, indicating that significant performance gain can be achieved through an optimized design.
Original languageEnglish
Title of host publicationEuropean Conference on Antennas and Propagation (EuCAP), 2018
Number of pages5
Publication statusPublished - 2018 Apr
EventEuropean Conference on Antennas and Propagation (EuCAP), 2018 - London, United Kingdom
Duration: 2018 Apr 92018 Apr 13


ConferenceEuropean Conference on Antennas and Propagation (EuCAP), 2018
Country/TerritoryUnited Kingdom

Subject classification (UKÄ)

  • Communication Systems


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