Journal ArticleDOI
Bandwidth-Enhanced Low-Profile Cavity-Backed Slot Antenna by Using Hybrid SIW Cavity Modes
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TLDR
In this paper, a low-profile substrate integrated waveguide (SIW) cavity-backed slot antenna is presented, where two hybrid modes, whose dominant fields are located in different half parts of the SIW cavity are two different combinations of the and resonances.Abstract:
A bandwidth enhanced method of a low-profile substrate integrated waveguide (SIW) cavity-backed slot antenna is presented in this paper. Bandwidth enhancement is achieved by simultaneously exciting two hybrid modes in the SIW-backed cavity and merging them within the required frequency range. These two hybrid modes, whose dominant fields are located in different half parts of the SIW cavity, are two different combinations of the and resonances. This design method has been validated by experiments. Compared with those of a previously presented SIW cavity-backed slot antenna, fractional impedance bandwidth of the proposed antenna is enhanced from 1.4% to 6.3%, its gain and radiation efficiency are also slightly improved to 6.0 dBi and 90%, and its SIW cavity size is reduced about 30%. The proposed antenna exhibits low cross polarization level and high front to back ratio. It still retains advantages of low-profile, low fabrication cost, and easy integration with planar circuits.read more
Citations
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Journal ArticleDOI
Compact Half Diamond Dual-Band Textile HMSIW On-Body Antenna
Sam Agneessens,Hendrik Rogier +1 more
TL;DR: In this paper, a dual-band textile antenna, designed for optimal on-body performance in the 2.4 and 5.8 GHz Industrial, Scientific and Medical bands, is proposed.
Journal ArticleDOI
Enhanced Isolation of a Closely Spaced Four-Element MIMO Antenna System Using Metamaterial Mushroom
TL;DR: In this article, a double-layer mushroom structure is proposed to enhance the interelement isolation of a four-element antenna system, wherein four closely positioned substrate-integrated cavity-backed slot (SICBS) antenna elements are configured for multiple-input multiple-output (MIMO) applications.
Journal ArticleDOI
Broadband Substrate Integrated Waveguide Cavity-Backed Bow-Tie Slot Antenna
TL;DR: In this article, a bow-tie-shaped slot antenna is proposed to induce strong loading effect in the cavity and generate two closely spaced hybrid modes that help to get a broadband response.
Journal ArticleDOI
Wearable Textile Half-Mode Substrate-Integrated Cavity Antenna Using Embroidered Vias
TL;DR: In this article, a wearable textile antenna based on the fundamental mode of a half-mode substrate-integrated semicircular cavity is presented, which operates around 5 GHz and is manufactured with two layers of silver fabric conductors, on the top and bottom of a low-permittivity low-loss foam with minimal water absorption.
Journal ArticleDOI
Design and Analysis of SIW Cavity Backed Dual-Band Antennas With a Dual-Mode Triangular-Ring Slot
TL;DR: In this paper, a dual-mode triangular-ring slot (TRS) antenna was proposed by simultaneously exciting the SIW cavity, the slot mode and the patch mode inside the slot.
References
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Journal ArticleDOI
Planar Slot Antenna Backed by Substrate Integrated Waveguide Cavity
TL;DR: In this paper, a low profile cavity backed planar slot antenna has been described, which is completely constructed at a single substrate by using substrate integrated waveguide technique and grounded coplanar waveguide.
Journal ArticleDOI
Development of Low Profile Cavity Backed Crossed Slot Antennas for Planar Integration
TL;DR: In this article, a single-fed low profile cavity backed crossed slot antennas for dual frequency dual linear polarization and circular polarization applications are proposed by employing the substrate integrated waveguide (SIW) technique in the antenna designs.
Journal ArticleDOI
Compact Low-Loss Integration of High- $Q$ 3-D Filters With Highly Efficient Antennas
TL;DR: In this paper, a novel synthesis technique to integrate high-Q 3-D filters with highly efficient slot antennas is presented, which allows for compact integration of 3D filters and antennas with very high antenna efficiency and significantly reduced form factor of integrated RF front ends.
Journal ArticleDOI
Comparison of the Radiation Efficiency for the Dielectric Resonator Antenna and the Microstrip Antenna at Ka Band
TL;DR: In this paper, the radiation efficiency of a dielectric resonator antenna (DRA) and a microstrip antenna (MSA) at the Ka band was investigated numerically and experimentally.
Journal ArticleDOI
Design of SIW Cavity-Backed Circular-Polarized Antennas Using Two Different Feeding Transitions
TL;DR: In this paper, two circular-polarized circular patch antennas which have novel feeding structures such as a substrate integrated waveguide (SIW), a cavity-backed resonator and two different feeding transitions, are proposed and experimentally investigated in terms of electrical performances, including reflection coefficients, optimized parameter values, circular polarized antenna gain, axial ratios and radiation patterns.