Design and Investigation of a Dual-Band Annular Ring Slot Antenna for Aircraft Applications

Abstract

Abstract-A novel dual-band annular ring slot antenna is investigated. The antenna consists of a center-fed circular microstrip patch antenna with a coupled annular ring. And it is shorted concentrically with a set of conductive vias. By adjusting the parameters of the antenna, the dual resonant frequencies for two modes (TM 01 and TM 02 modes) are achieved. The antenna is fabricated and tested. Results show that the proposed antenna with height of 0.0217λ 0 can provide gains of 3.01 dBi at 2.6 GHz (the receiving frequency) and 5.74 dBi at 2.95 GHz (the transmitting frequency). Good agreement between the measurement and simulation for the return loss and radiation patterns is achieved. The proposed antenna has dual-band characteristics, simple structure, low profile, and omni-directional azimuth radiation pattern. It is suitable for aircraft both receiving and transmitting signals and frequency division duplex (FDD) applications.

Low‐profile ring slot SIW antenna based on higher‐order cylindrical cavity modes

“…By applying an offset to the feeding point, the other higher‐order modes can be excited. TM 01 (fundamental mode) and TM 11 have been widely used in microstrip, and cavity‐backed antennas [17, 18, 23, 24], and they would not be considered here. On the other hand, higher‐order modes have been rarely used, especially in the cylindrical cavity, because of low bandwidth and high side‐lobe level [12].…”

Performance Analysis on Dual-band Annular Ring Microstrip Antenna at 1.9 GHz and 2.1 GHz Operating Frequencies

“…Annular ring microstrip antenna has been used in many applications including for satellite communication [1], wireless sensor network (WSN) application [2] and also has been proposed for aircraft [3] and integrated GPS and SDARS automotive applications [4]. The concept is adopted widely to obtain ultra wide band operating frequency [5]- [7] and also for its circular polarization capability [1], [8], [9].…”