Terahertz technology opened its wings toward the partially explored electromagnetic spectrum (30–10,000 GHz). This paper presents a novel trapezoidal shape microstrip patch antenna for terahertz regime applications. A thin microstrip line is used to provide the coupling between source and antenna. The proposed antenna is developed to be utilized in the frequency band of 0.88–1.62 THz for high speed applications. The performance of patch antenna is limited due to surface leaky waves beneath; therefore workability of the patch antenna is enhanced by employing photonic crystals in the thick dielectric substrate. It is observed that the return loss, VSWR and gain achieved show enormous improvement. The proposed antenna exhibits a wider bandwidth ranging between 1.2 THz and 1.62 THz.

A trapezoidal microstrip patch antenna on photonic crystal substrate for high speed THz applications

In this work, a high-performance THz microstrip patch antenna is designed using defected ground structure and photonic band-gap. The operating frequency of the proposed antenna is 0.690 THz. DGS an...

High performance THz patch antenna using photonic band gap and defected ground structure

We investigated a dielectric resonator ceramic microstrip patch antenna. The antenna was formed using barium strontium titanate (BST), which had a dielectric constant of 15. A new approach, i.e., the use of a high temperature dielectric probe kit, was used to determine the dielectric constant of BST. A computer simulation technology (CST) microwave studio was used to simulate the BST array antennas, taking into consideration the dielectric constant. We also measured the gain of the antennas loaded with two-, four- , and six-element arrays of the BST antenna and found that the gain of a six-element BST array antenna was enhanced by a gain of about 1.6dB over the four-element BST array antenna at 2.3GHz. The impedance bandwidths of these BST array antennas for voltage standing wave ratio (VSWR) < 2 were in the application ranges,

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Investigation of the Characteristics of Barium Strontium Titanate (BST) Dielectric Resonator Ceramic Loaded on Array Antennas

We investigated a dielectric resonator ceramic microstrip
patch antenna The antenna was formed using barium strontium
titanate (BST), which had a dielectric constant of 15 A new approach,ie, the use of a high temperature dielectric probe kit, was used to determine the dielectric constant of BST A computer simulation technology (CST) microwave studio was used to simulate the BST array antennas, taking into consideration the dielectric constant We also measured the gain of the antennas loaded with two-, four, and six-element arrays of the BST antenna and found that the
gain of a six-element BST array antenna was enhanced by a gain of about 16 dB over the four-element BST array antenna at 23 GHz The impedance bandwidths of these BST array antennas for voltage standing wave ratio (VSWR) < 2 were in the application ranges,ie, 230 to 250 GHz, established for Worldwide Interoperability for Microwave Access (WiMAX) and Wireless Local Area Network
(WLAN) Compared with the conventional array antenna with the same aperture size, the performance of the antenna obviously was improved, and the design is suitable for array applications, including base stations, for example

Investigation of the characteristics ofbarium strontium titanate (bst) dielectricresonator ceramic loaded on array antennas

This letter introduces the first beam splitter that acts on free-space, planar, microwave frequency waves below 80 GHz The design utilizes a frequency selective surface (FSS) operating away from its normal frequency of operation The FSS is constructed from an array of scalable printed patterns, which allows for the tenability of the FSS to any frequency that the fabrication method will allow The basic operation of an FSS, the reasoning behind selecting the chosen unit element and fabrication, and a comparison of simulated and measured results are discussed in detail An inkjet-printed prototype on a glossy paper substrate utilizing silver nanoparticles verifies the easy and scalable low-cost fabrication capability of the proposed topology

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A Novel Polarization-Independent, Free-Space, Microwave Beam Splitter Utilizing an Inkjet-Printed, 2-D Array Frequency Selective Surface

In this paper, we present a novel dielectric EBG corner reflector antenna The reflector is realized using dielectric rods arranged in a square lattice The influence of reflector width, length and source distance from the corner apex is investigated using a simple two-dimensional antenna model; results are then used to design a threedimensional antenna A prototype was build and tested, showing a good agreement between simulations and measurements results: 40% impedance bandwidth is achieved as well as stable radiation patterns with a maximum gain of 135 dBi and a front-to-back-ratio greater than 20 dB

Dielectric EBG Corner Reflector Antenna

A novel dielectric cylindrical electronic bandgap antenna is presented and analysed using an in-house developed Finite-Difierence- Time-Domain software simulator. The design steps and the simulations results of a geometrical parametric study are also presented and discussed, focusing on the design of antennas to operate in the X-band with high directivity patterns on the H-plane. Finally, the measurements results of a set of experiments carried out on a prototype showed very good agreement with simulations: 11% fractional bandwidth at 10GHz and an average gain of 9.5dBi are achieved in the impedance bandwidth with 13dB front-to-back-ratio in the azimuthal plane.

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Design of a Beam Forming Dielectric Cylindrical EBG Antenna

A novel electromagnetic band-gap (EBG) antenna based on a triangular lattice of dielectric rods is presented and analyzed using an in-house developed finite-difference-time-domain software simulator. The design steps and the simulations results are presented, focusing on the design of antenna structures with high directivity patterns on the H-plane. Finally, the measurement results of a set of experiments carried out on a prototype designed and built to operate in the X-band are presented and discussed, showing very good agreement with simulations: 31% fractional bandwidth and an average gain of 11.5 dBi are achieved within the bandwidth with 27 dB front-to-back-ratio in the azimuthal plane.

Triangular Lattice Dielectric EBG Antenna

The design steps for a novel cylindrical electronic bandgap antenna in the X-band are given. Simulation results, based on a FDTD modeller are also presented as an aid to designing the physical antenna. The antenna demonstrated high directivity in the H-plane. Measurements on a prototype achieved 54% fractional bandwidth with an average gain of 8 dBi and 17.5dB front to back ratio in the azimuthal plane.

Beam forming dielectric cylindrical EBG antenna

A conical steerable dielectric resonator antenna is presented and analysed using an in-house developed FDTD simulator. A 30% impedance bandwidth is achieved with an average gain of 6.5% dB. Radiation patterns in the principal planes do not change significantly within the impedance bandwidth, presenting more than 18% dB front-to-back ratio in the azimuthal plane.

Claudio Biancotto

Papers

Dielectric EBG Corner Reflector Antenna

Design of a Beam Forming Dielectric Cylindrical EBG Antenna

Triangular Lattice Dielectric EBG Antenna

Beam forming dielectric cylindrical EBG antenna

Conical steerable dielectric resonator antenna