Journal ArticleDOI
Photonic waveguide inspired corrugated cross-coupled notch DRA
Duggirala Venkata Kiran,Dileep Sankara Narayanan,Vinay Kumar Killamsetty,Biswajeet Mukherjee +3 more
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In this article, a cross-coupled corrugated notch Dielectric Resonator Antenna (DRA) is proposed, which is applied on the dielectric resonator.Abstract:
In this paper, a cross-coupled corrugated notch Dielectric Resonator Antenna (DRA) is proposed. The corrugated surface is applied on Dielectric Resonator (DR), which resembles with the feat...read more
Citations
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Broadbeam Coplanar-Parasitic Rectangular Dielectric Resonator Antenna
TL;DR: In this article, a broadbeam aperture-coupled coplanar parasitic rectangular dielectric resonator antenna is proposed which yields broadbeam in both working planes simultaneously, where the antenna consists of a main radiating rectangular DRS element centered over a wide feed slot and two parasitic rectangular DSR elements one on each side of the main DRS with an optimum gap in between.
Journal ArticleDOI
Oversized Circular Corrugated Waveguides Operated at 42 GHz for ECRH Application
Amit Patel,Pujita Bhatt,Keyur Mahant,Alpesh Vala,Krishnamachari Sathyanarayan,Sanjay V. Kulkarni,and Dharmesh Rathi +6 more
TL;DR: In this article, the design, analysis, and manufacturing of an oversized circular metallic corrugated waveguide with rectangular and square grooves for transmitting power from gyrotron to tokamak or dummy load have been carried out.
Journal ArticleDOI
Design of a novel ultra‐wideband dual‐polarized printed planar antenna
TL;DR: In this article , a simple one-layer printed planar structure with dual-polarization and ultra-wideband (UWB) properties is proposed, which consists of a pair of crossed dipoles, two stacked square loops, four meander slots, and a hornlike reflecting cavity.
References
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Journal ArticleDOI
The resonant cylindrical dielectric cavity antenna
TL;DR: In this article, an experimental investigation of the radiation and circuit properties of a resonant cylindrical dielectric cavity antenna has been undertaken, and a simple theory utilizing the magnetic wall boundary condition is shown to correlate well with measured results for radiation patterns and resonant frequencies.
Journal ArticleDOI
Fundamental limitations in antennas
TL;DR: In this article, four fundamental limitations in antennas have been identified in the areas of: electrically small antennas, super-directive antenna, superresolution antennas, and high-pin antennas.
Journal ArticleDOI
Theory of Periodic Dielect Waveguides
TL;DR: In this paper, the propagation of electromagnetic waves along open periodic, dielectric waveguides is formulated as a rigorous and exact boundary-value problem, and the characteristic field solutions are shown to be of the surface-wave or leaky-wave type, depending on the ratio of periodicity to wavelength (d/lambda).
Journal ArticleDOI
Recent advances in dielectric-resonator antenna technology
TL;DR: Several novel elements are presented that offer significant enhancements to parameters such as impedance bandwidth, circular-polarization bandwidth, gain, or coupling to various feed structures in the dielectric-resonator antenna environment.
Proceedings ArticleDOI
Impedance, bandwidth, and Q of antennas
TL;DR: In this article, the authors derived an approximate expression for the bandwidth of a tuned antenna in terms of its input impedance that holds at every frequency, i.e., throughout its entire antiresonant and resonant frequency ranges.