Symmetrical double-comb multi-slotted large bandwidth antenna for intelligent transportation systems

Abstract

This article presents a novel compact circularly polarized multi-slotted large bandwidth antenna for intelligent transportation system (ITS). The proposed antenna has a rectangular shaped multi-slotted patch on upper side and a partial ground plane with multiple slots on lower side. The designed prototype antenna works from 22 to 29 GHz and is therefore applicable for ITS and weather forecasting applications. The design structure is distinct in terms of a low profile as well as simple structure, which is advantageous in mass production. Moreover, the multiple slots design antenna provides enhanced bandwidth. The axial ratio shows that the proposed antenna's behavior is circularly polarized with a compact size of 30 × 20 mm 2 . The measured reflection coefficient, gain, and the radiation pattern are consistent with simulated results. The proposed antenna has a reflection coefficient below −20 dB and maximum gain of~5 dBi at 24 GHz (ITS band).

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

“…These diodes allow reconfigurability. 5 The diode resistance and capacitance in the ON and OFF conditions are 3 Ω, 0.15 pF, and 2.7 kΩ, 9 pF, respectively. 5 The PIN diode can operate up to resonance frequency of 30 GHz.…”

“…A reconfigurable coplanar waveguide single fed antenna with the defected ground plane for DSRC application has been presented in References . Reconfigurable ultra‐wideband antennas for ITS have been reported in Reference Using PIN diodes, beam shaping is allowed in antenna arrays. In Reference , a polarization reconfigurable E‐shaped patch antenna with wideband performance is presented.…”

A dual feed PIN diode based switchable multiband planar meandered antenna for intelligent transportation system application

“…In Reference , frequency‐reconfigurable microstrip patch‐slot antenna based on Distributed Transceivers has been described in References and . Different multiband, dual‐fed, PIN diode based switchable antenna architecture for frequency bands like ITS, WLAN/WiMAX, DSRC, and GPS has been reported in the context of vehicular and general communication . A fern‐fractal shape patch antenna for vehicular communication having impedance bandwidth of 410 MHz is described in Reference .…”