Cavity-backed folded-slot antenna

Planar High-Gain Circularly Polarized Element Antenna for Array Applications

“…Although some CP antennas, which use bulk cavities, can achieve gains of approximately 8.7 dBi [10] [11], they suffer from the three-dimensional structure, the large footprint over one wavelength square, or the non-planar form for array applications. Evidence found in the literature suggests that there are few planar CP element antennas that are suitable for array applications and can provide a radiation gain higher than 8.0 dBi [1][2] [6][8] [19][20][21][22][23]. This paper reports a planar high-gain element CP antenna that can provide a gain of approximately 10.0 dBi for array applications.…”

“…Low-cost SIW-cavity-backed antennas have been reported for linear polarization applications [17]- [19]. Additionally, circularly polarized antennas have been developed using backed SIW cavities [20]- [23].…”

Characterization of a cavity-backed capacitively-fed folded slot antenna using DOE techniques

“…The antenna had a 4.28 dB gain. The work in [2] was based on previous work by López, et.al. in [3] and [4], where the folded-slot was characterized using DOE techniques.…”

“…The high and low levels of the proposed factors were selected, as a 110% and 90% of the initial dimensions, respectively. Seven factors were selected according to the work in [2] and [3] and are shown in Fig. 1.…”

“…In [2], a cavity-backed coplanar-waveguide (CPW) fed antenna was characterized using DOE. The antenna operated at 4.5 GHz, and had the cavity soldered on the ground plane of a single-sided Rogers RO3006 substrate.…”