A wide circularly polarized dual‐band isosceles trapezoidal monopole antenna with modified ground plane

Abstract

Summary In this paper, a simple wideband circularly polarized monopole antenna for different wireless and satellite communication applications is proposed. The top plate of the antenna is composed of an isosceles trapezoidal patch with an inverted L‐shaped strip connected along with this. The bottom side (ground plane) has been modified by embedding two right‐angle triangular stubs for enhancing the impedance and CP performances. The proposed antenna is designed and fabricated on commercially available FR4 substrate occupying the volume of 0.525λ₀ × 0.42λ₀ × 0.0168λ₀. The −10‐dB reflection coefficient bandwidth exhibits two wide bands of 1530 MHz (2.6 GHz to 4.13 GHz) and 2040 MHz (6.93 GHz to 8.97 GHz). The measured 3‐dB AR bandwidth is 1800 MHz (6.6 GHz to 8.4 GHz), covering International Tele‐communication Union for satellite communication bands (uplink and downlink). In addition, the proposed monopole antenna has also provided good gain ≥5dBi for both the bands.

Axial ratio bandwidth improvement of compact planar monopole antenna with dual‐band and dual‐sense

“…In references, 14–17 coplanar strip, simple strip, slot and half cutting CP antenna techniques, and inverted L‐ shaped PS with microstrip line had been developed for CP radiation. Semicircular patch antenna, 18 metal ridge septum with rectangle and triangle cascade, 19 trapezoidal monopole antenna, 20 two parasitic strips loaded CP antenna, 21 coplanar waveguide feeded T ‐shaped monopole antenna with inverted L ‐shaped grounded stub, 22 modified rectangular monopole, asymmetric ground plane, L ‐shaped strip with CPW feed, 23 and a DRA for circular polarization 24 were implemented for broadband, dual‐band, and dual‐sense applications. From the above literature survey, it is observed that the ARBW is improved with large antenna size.…”

“…rectangle and triangle cascade, 19 trapezoidal monopole antenna, 20 two parasitic strips loaded CP antenna, 21 coplanar waveguide feeded T-shaped monopole antenna with inverted L-shaped grounded stub, 22 modified rectangular monopole, asymmetric ground plane, L-shaped strip with CPW feed, 23 and a DRA for circular polarization 24 were implemented for broadband, dual-band, and dual-sense applications. From the above literature survey, it is observed that the ARBW is improved with large antenna size.…”

Dual-Band CPW Graphene Antenna for Smart Cities and IoT Applications

“…This paper presents the design of a multiband coplanar waveguide antenna using a graphene film over a glass substrate. The proposed antenna presents omnidirectional radiation and operates in two bands, first in the 2.45 GHz ISM band and the second band covering the frequency range from 4 to 6 GHz to generate the multiband behavior; the antenna is formed by two resonator patches, as reported in [ 33 , 34 , 35 , 36 ]. The antenna is fully characterized by the reflection coefficient and the radiation patterns’ measurement.…”

Circularly polarized patch antenna with simultaneously wide frequency tuning range and high gain performance

“…The circularly polarized antenna is not sensitive to the polarization of electromagnetic waves, can receive electromagnetic waves in any form of polarization, and also can avoid polarization loss caused by polarization mismatch. [4][5][6] The methods to achieve circular polarization include the single-feed method, 7,8 multi-feed method, [9][10][11] and the use of polarization converters. 12,13 The polarized reconfigurable antennas [14][15][16] can be converted between circular polarization and linear polarization.…”

“…The propagation of electromagnetic signals in space is becoming increasingly complex, and more and more interference factors have put forward a major challenge to the stability of wireless communication systems. The circularly polarized antenna is not sensitive to the polarization of electromagnetic waves, can receive electromagnetic waves in any form of polarization, and also can avoid polarization loss caused by polarization mismatch 4–6 . The methods to achieve circular polarization include the single‐feed method, 7,8 multi‐feed method, 9–11 and the use of polarization converters 12,13 .…”