Circularly Polarized Self-Diplexing SIW Cavity Backed Slot Antennas

Priya, Shruti; Kumar, Kundan; Dwari, Santanu; Mandal, Mrinal Kanti

doi:10.1109/tap.2019.2938576

Cited by 55 publications

(22 citation statements)

References 22 publications

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“…In fact, each SIW resonator is individually excited using coaxial probe. Similarly, many self-diplexing antennas have been reported using plus-shaped slots [18], square slots [19], cross slots [20], triangular patches [21], and bowtie slots [22]. Despite good in-band performance of these antennas, they suffer from poor isolation levels and large footprints that limit their employment in ultracompact RF devices.…”

Section: Introductionmentioning

confidence: 99%

Ultracompact Quarter-Mode Substrate Integrated Waveguide Self-Diplexing Antenna

Iqbal

Al‐Hasan

Mabrouk

et al. 2021

Antennas Wirel. Propag. Lett.

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A highly compact substrate integrated waveguide (SIW) self-diplexing antenna, operating at wireless local area network bands (3.6 and 5.4 GHz), is proposed in this letter. The proposed antenna consists of two closely placed (0.022λ g , where λ g is the guided wavelength at 3.6 GHz) quarter-mode SIW resonators, exited by two coaxial probes. Two rectangular slots are added to the closed-ends of each resonator to generate additional capacitances. Therefore, both resonators operate below their fundamental frequencies, and hence, miniaturization is achieved. Moreover, a reliable circuit model is developed to validate the design process. The proposed antenna has ultracompact dimensions of 0.08λ 2 g with simulated gains of 4.9 and 5.34 dBi at 3.6 and 5.4 GHz, respectively. In addition, the simulated isolation levels are 32.5 and 36.6 dB at the lower and higher resonant bands, respectively. Furthermore, both resonant frequencies can be independently controlled by changing the length of the capacitive slots. Due to its compactness, independent resonance control and high isolation, the proposed antenna is suitable for compact and planar radio frequency components.

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Section: Introductionmentioning

confidence: 99%

Ultracompact Quarter-Mode Substrate Integrated Waveguide Self-Diplexing Antenna

Iqbal

Al‐Hasan

Mabrouk

et al. 2021

Antennas Wirel. Propag. Lett.

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“…The antenna in Ref. 10, uses a cross‐slot as a radiator to realize CP characteristic. However, these aforementioned SIW antennas have only one CP beam.…”

Section: Introductionmentioning

confidence: 99%

Dual‐beam and dual‐mode circularly polarized antenna based on substrate integrated waveguide technology

Tian

Tang

Guan

et al. 2021

Micro & Optical Tech Letters

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This article presents a dual‐beam dual‐mode circularly polarized (CP) antenna based on substrate integrated waveguide (SIW) technology. The antenna is etched with an octagon slot on upper surface of a SIW rectangular cavity, which has size of0.25em1.4λg×1.4λg. Four square patches with the same size and a cross‐shaped patch are placed in the slot. Experiments are conducted both on simulation and measurement, showing the proposed antenna can radiate two beams simultaneously at 10.9 GHz. One beam is left‐handed circular polarization (LHCP) pointing at phi = −45°and theta = 30°, the other beam is right‐handed circular polarization (RHCP) pointing at phi = +45° and theta = 40°. The measured axial ratio (AR) bandwidths are 1.46% (10.8–10.96 GHz) and 1.19% (10.82–10.95 GHz) for LHCP and RHCP beams respectively. Both CP beams can achieve 20° beamwidth for 3‐dB AR. The measured results are in good agreement with the simulations.

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“…The size is not presented in the paper, but the proposed structure is very bulky because of the space for the GCPW‐SIW transition and matching circuit. In Reference 16, an asymmetric cross‐slot on top of a rectangular SIW cavity is used as the basic radiator. A different sense of polarizations over the bands is obtained by changing the feed position and the slot orientation.…”

Section: Introductionmentioning

confidence: 99%

Wideband circularly polarized antenna for dual‐band operation

Sung

2020

Micro & Optical Tech Letters

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In this paper, we propose a wideband antenna with circular polarization (CP) characteristics in two different bands. The proposed antenna consists of two radiator elements on the top layer of the substrate and a feeding structure on the bottom layer of the substrate. A square wide slot with 45 rotation achieves low resonant frequency. High resonant frequency is formed by a square patch implemented in a square slot. To obtain CP characteristics in the low-frequency band, a pair of opposite edges of the ground plane/substrate is cut off. By applying a pair of slits to the diagonal part of the patch antenna, good CP performance can be obtained in the high-frequency band. The measured 3-dB axial ratio (AR) bandwidths are 11% and 10.4% in two different bands, respectively. Right-handed CP (RHCP) characteristics are exhibited in both bands; these measurements are congruent with the simulated data.

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Circularly Polarized Self-Diplexing SIW Cavity Backed Slot Antennas

Cited by 55 publications

References 22 publications

Ultracompact Quarter-Mode Substrate Integrated Waveguide Self-Diplexing Antenna

Ultracompact Quarter-Mode Substrate Integrated Waveguide Self-Diplexing Antenna

Dual‐beam and dual‐mode circularly polarized antenna based on substrate integrated waveguide technology

Wideband circularly polarized antenna for dual‐band operation

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