A compact reconfigurable aperture coupled fed antenna for intelligent transportation system application

Abstract

This article presents a novel reconfigurable aperture coupled fed antenna with a defected ground plane for an intelligent transportation system (ITS). The antenna design with aperture coupled feed line. The defected ground plane allows variation in reactance of the proposed antenna around the center frequency and coupling of energy. This antenna is multiband and works at resonant frequencies of 2.45, 5.9, and 24 GHz allowing measurable reconfigurability with the help of PIN diode. From the measurement, one can infer that the bandwidth is 0.8, 1, and 8.5 GHz, and gain obtained are 11.7, 4.04, and 4.4 dBi at 2.45, 5.9, and 24 GHz frequencies, respectively. It is circularly polarized with a broadside radiation pattern. The advantage of this design is that it covers all the three bands allocated by the Federal Communications Commission for ITS and vehicular communication applications. It is an electrically small, low profile antenna and has a simple structure thus gives large bandwidth.

Compact modified hourglass-shaped aperture-coupled antenna for radar applications

“…The various parameters of the fabricated prototype are compared with the reported works in Table 3. Though literature [7, 13, 18] are giving better gain per unit radiating patch area, their gain per unit aperture area is much less than the proposed antenna. The proposed modified hourglass ACMPA gives a better gain per unit aperture area and better gain per unit radiating patch area compared with the antenna in the reported works.…”

“…Compactness along with gain enhancement can be achieved in aperture-coupled antennas by using fractal slot and defective ground plane [4], stacked patch [5][6][7], substrate integrated waveguide [8,9], by using superstrate [10,11], and by various other technologies [12][13][14][15][16][17][18][19]. All the above works of literature have used a single or dual rectangular slot, H-shaped slot, I-shaped slot, and cross-shaped slot.…”

Realization of reconfigurable filtering horn antennas using active frequency selective surfaces for GSM and LTE signal filtering

“…Due to this, an RF Chock Inductor is not necessary. The mentioned DC biasing method is also being used by other authors in literature 48‐50 . The antenna given in Reference 51 is used as reference antenna for gain characteristic's measurements.…”

Three-Dimensional Printed Annular Ring Aperture-Fed Antenna for Telecommunication and Biomedical Applications

“…A study that resolved this challenge to characterize 2D solderless materials by introducing the capacitive coupling filter has been reported [6]. As a result, the aperture-fed method will exclude the need to solder the feed circuit and radiating elements of the antenna [28][29][30][31]. Most of the work related to aperture-fed antennas has been conducted on linearly polarized rectangular antennas [28][29][30][31][32][33].…”

“…As a result, the aperture-fed method will exclude the need to solder the feed circuit and radiating elements of the antenna [28][29][30][31]. Most of the work related to aperture-fed antennas has been conducted on linearly polarized rectangular antennas [28][29][30][31][32][33]. However, the only paper that discusses the annular antenna is [34], but about circularly, not linear polarization.…”