Abstract
The development of a low profile, lightweight, broadband spiral antenna for airborne applications is described. The use of an electromagnetic band gap substrate with loads as reflector for an Archimedean spiral antenna is proposed. A method based on a transmission line model is presented to design this loaded electromagnetic band gap substrate. Simulation and measurements results demonstrate the applicability of the concept. A good impedance matching as well as a good circular polarisation are achieved over a 10:1 frequency bandwidth. Finally, thickness and weight of this new antenna are greatly reduced and their performances are better compared with a conventional spiral antenna with unidirectional beam.
| Original language | English |
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| Pages (from-to) | 212-216 |
| Number of pages | 5 |
| Journal | IET Microwaves, Antennas and Propagation |
| Volume | 1 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 1 Feb 2007 |