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Design of a disc-cone antenna for passive radar in the DVB-T frequency range

: Knott, P.; Nowicki, T.; Kuschel, H.

Institut für Mikrowellen- und Antennentechnik e.V. -IMA-; Institute of Electrical and Electronics Engineers -IEEE-:
GeMIC 2011, German Microwave Conference : 14 - 16 March 2011, Darmstadt, Germany, Digest of Papers
New York, NY: IEEE, 2011
ISBN: 978-1-4244-9225-1
ISBN: 978-3-9812668-3-2
ISBN: 978-3-9812668-2-5
4 S.
German Microwave Conference (GeMiC) <6, 2011, Darmstadt>
Fraunhofer FHR

Multi-static transmitter networks are found in the digital broadcast service nets for radio (DAB) and television (DVB-T) with bandwidths ranging from 1.5 to 7 MHz and transmit powers between 1 and 10 kW. Taking advantage of these transmitter networks for radar purposes combines the covertness of a hardly locatable receiver with the advantageous anti-stealth detection capabilities of the VHF/UHF frequency range and the simultaneous multi-static illumination under different aspect angles. Increased multi-static coverage at low elevations and diffraction propagation add to the detection of low flying objects. Passive, multi-static, low frequency radars are thus expected to have decisive potentials to detect stealth and low flying targets. The proposed paper presents the design of a wideband discone antenna element for use in a technology demonstrator system currently developed at Fraunhofer FHR. The specification of the antenna array aimed at the DVB-T frequency range and the simulation results as well as some preliminary experimental results are shown.