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As is well known, traditional HF/VUF/UHF antennas are often protruding and have large size blades, which are greater than 1 meter tall. Such obtrusive antennas are undesirable for modern aircraft. Therefore, there is a strong need for low profile antennas that can still operate efficiently at HF/VUF/UHF bands. This paper presents ultra low profile wideband antenna operating from 30MHz to 400MHz. The...
A new compact dual-linearly polarized ultrawideband (UWB) antenna for continuous operation from 100 to 2000 MHz band with a minimum realized gain of -15 dBi is presented. The bore-sight realized gain monotonically increases from -15 dBi at 90 MHz to 0 dBi at 600 MHz, and remains approximately +4 dBi above 1000 MHz. The flared horn section closer to the feed is responsible for radiation above 1000...
We have designed a light weight and low height UWB antenna with omnidirectional coverage for airborne applications. For the given aperture, we attain - 15 dBi gain point at 55 MHz. Thus this antenna is only 15% larger than the theoretical miniaturization limit: 49 MHz. It is also important to note that the realized gain above 200 MHz is constantly above 0 dBi till at least 1 GHz, even at the second...
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