Planar High-Gain Circularly Polarized Element Antenna for Array Applications

Abstract

This paper proposes a planar high gain circularly polarized element antenna that can be used for array applications. The substrate integrated waveguide (SIW) cavity is designed to support dual resonant modes, the TE120-like and TE210-like modes, for the implementation of circularly polarized radiation performance. Four rectangular radiation slots and a large perturbation, introduced by inserting a metallic via-brick into the SIW cavity, are deployed to achieve a high simulated gain of 10.28 dBi at 6.65 GHz for the proposed element. As a demonstration of an array application, a 4x4 array antenna is designed using the proposed element with a compact beam-forming network. Experiments are carried out to verify the designed prototypes. The measured peak gains of the designed element and array antennas are 9.6 and 20.1 dBi, respectively, which include the loss from SMA connectors. Good agreement between simulated and measured results are obtained.

A Novel Wideband Circularly Polarized Antenna for RF Energy Harvesting in Wireless Sensor Nodes

“…Circularly polarized antennas can be achieved using single-feed or multiple-feed structures. Several antennas for RF energy harvesting have been reported in [10][11][12][13][14][15]. A multilayer patch antenna with CP performance is presented for energy harvesting application in [10].…”

A Novel Ancient Coin-Like Fractal Multiband Antenna for Wireless Applications

“…In [20], a printed fractal monopole such as the Sierpinski-Carpet (SC) antenna with grounded coplanar waveguides (GCPWs) which matches throughout the 4.65-10.5 GHz range with low cross-polar fields and a well-behaved pattern is introduced. In [21], the authors propose a fractal geometry antenna to achieve the desired miniaturization and multiband performance. Furthermore, use of a new hybrid dielectric resonator antenna (DRA) excited by a new fractal monopole antenna provides a large bandwidth range.…”

Novel Circularly Polarized Siw Cavity-Backed Antenna With Wide Cp Beamwidth by Using Dual Orthogonal Slot Split Rings

“…To overcome these shortcomings, many substrate integrated waveguide (SIW) cavitybacked CP slot antennas have been proposed. The following three main radiating configurations of CP SIW cavity-backed slot antennas have been proposed in the literature: compound slots [5][6][7][8][9], annular, triangular or split ring slot [10][11][12][13] and patches, loop or cavity that cover the slots [14][15][16][17][18][19].…”

“…The cross-slots are similar to the compound orthogonal straight slot pair and can also realize the circular polarization [7,8]. A circularly polarized radiating element consisting of four slots has been reported in [9], which can be considered a combination of the orthogonal slot pair. Another SIW cavity-backed CP structure is the annular [10,11], triangular [12] or split ring [13] slot embedded in a cavity-backed resonator.…”