scholarly journals Design of High Gain and Broadband Antennas at 60 GHz for Underground Communications Systems

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Yacouba Coulibaly ◽  
Mourad Nedil ◽  
Larbi Talbi ◽  
Tayeb A. Denidni
Keyword(s):  
Frequency Band ◽  
Dielectric Resonator ◽  
Communication Systems ◽  
High Gain ◽  
Simulation Software ◽  
60 Ghz ◽  
Dielectric Resonator Antenna ◽  
Underground Communication ◽  
Underground Communications ◽  
Good Agreement

A new broadband and high gain dielectric resonator antenna for millimeter wave is presented. The investigated antenna configuration consists of a periodic square ring frequency selective surfaces on a superstrate, an aperture-coupled scheme feed, an intermediate substrate, and a cylindrical dielectric resonator. This antenna is designed to cover the ISM frequency band at 60 GHz (57 GHz–64 GHz). It was numerically designed using CST microwave Studio simulation software package. Another prototype with a plain dielectric superstrate is also studied for comparison purposes. A bandwidth of 13.56% at the centered frequency of 61.34 GHz and a gain of 11 dB over the entire ISM band have been achieved. A maximum gain of 14.26 dB is obtained at 60 GHz. This is an enhancement of 9 dB compared to a single DRA. HFSS is used to validate our antenna designs. Good agreement between the results of the two softwares is obtained. With these performances, these antennas promise to be useful in the design of future wireless underground communication systems operating in the unlicensed 60 GHz frequency band.

scholarly journals Hybrid Dielectric Resonator Antenna Composed of High-Permittivity Dielectric Resonator for Wireless Communications in WLAN and WiMAX

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Yih-Chien Chen
Keyword(s):  
Wireless Communications ◽  
Dielectric Resonator ◽  
Simulation Software ◽  
Dielectric Resonator Antenna ◽  
High Permittivity ◽  
Resonant Frequencies ◽  
Rectangular Slot ◽  
Measurement Results ◽  
Simulation Results ◽  
Good Agreement

The-hybrid dielectric resonator antenna consisted of a cylindrical high-permittivity dielectric resonator, a rectangular slot, and two-rectangular patches were implemented. The hybrid dielectric resonator antenna had three resonant frequencies. The lower, middle, and higher resonant frequencies were associated with the rectangular slot, rectangular patches, and dielectric resonator, respectively. Parametric investigation was carried out using simulation software. The proposed hybrid dielectric resonator antenna had good agreement between the simulation results and the measurement results. The hybrid dielectric resonator antenna was implemented successfully for application in 2.4/5.2/5.8 GHz of WLAN and 2.5/3.5/5.5 GHz of WiMAX simultaneously.

scholarly journals A Compact Wide-Band Hybrid Dielectric Resonator Antenna with Enhanced Gain and Low Cross-Polarization

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Feibiao Dong ◽  
Limei Xu ◽  
Wenbin Lin ◽  
Tianhong Zhang
Keyword(s):  
Frequency Band ◽  
Dielectric Resonator ◽  
Return Loss ◽  
Wide Band ◽  
High Gain ◽  
Hybrid Design ◽  
Cross Polarization ◽  
Dielectric Resonator Antenna ◽  
Small Base ◽  
Air Layers

By loading two printed patches to the dielectric resonator antenna (DRA), a compact wide-band hybrid dielectric resonator antenna with enhanced gain and low cross-polarization is presented. The proposed antenna utilizes a combination of a rectangular dielectric resonator and two printed patches. Due to the hybrid design, multiple resonances were obtained. By adding two air layers between the dielectric resonator and the printed patches, the bandwidth has been significantly improved. Compared to the traditional hybrid dielectric resonator antenna, the proposed antenna can achieve wide bandwidth, high gain, low cross-polarization, and even small size simultaneously. The prototype of the proposed antenna has been fabricated and tested. The measured −10 dB return loss bandwidth is 25.6% (1.7–2.2 GHz). The measured antenna gains are about 6.3 and 8.2 dBi in the operating frequency band. Low cross-polarization levels of less than −28.5 dB and −43 dB in the E-plane and H-plane are achieved. Moreover, the overall dimensions of the antenna are only 67 × 67 × 34 (mm3). The proposed antenna is especially attractive for small base antenna applications.

Wideband four-element two-segment triangular dielectric resonator antenna with monopole-like radiation

2015 ◽  
Vol 9 (2) ◽  
pp. 411-418 ◽  
Author(s):  
Ravi Kumar Gangwar ◽  
Pinku Ranjan ◽  
Abhishek Aigal
Keyword(s):  
Resonant Frequency ◽  
Dielectric Resonator ◽  
Return Loss ◽  
Simulation Software ◽  
Network Analyzer ◽  
Dielectric Resonator Antenna ◽  
Microwave Frequencies ◽  
Ansoft Hfss ◽  
Coaxial Probe ◽  
Good Agreement

In this paper, a wideband two-segmented four-element triangular dielectric resonator antenna (TDRA) with coaxial probe feed has been proposed. The proposed antenna has been analyzed, optimized, and studied through Ansoft HFSS simulation software. The prototype of the proposed antenna has been fabricated and its input characteristics are measured with the help of R&S Vector Network Analyzer. Good agreement has been obtained between simulated and measured results. The proposed design has been compared with two segments TDRA and found wider bandwidth with lower resonant frequency. The proposed antenna provides monopole-like radiation pattern over the entire bandwidth with nearly 33% bandwidth (return loss ≥10 dB) at a resonant frequency 6.9 GHz and 4.93 dBi peak gain. The proposed antenna is suitable for application of C-band microwave frequencies.

Four element triangular dielectric resonator antenna for wireless application

2015 ◽  
Vol 9 (1) ◽  
pp. 113-119 ◽  
Author(s):  
Ravi Kumar Gangwar ◽  
Pinku Ranjan ◽  
Abhishek Aigal
Keyword(s):  
Resonant Frequency ◽  
Dielectric Resonator ◽  
Simulation Software ◽  
Experimental Results ◽  
Single Element ◽  
Dielectric Resonator Antenna ◽  
Ansoft Hfss ◽  
Wireless Application ◽  
Operating Bandwidth ◽  
Good Agreement

A wideband four element triangular dielectric resonator antenna (TDRA) has been designed and fabricated by using 50 Ω coaxial probe feed. The input and radiation characteristics of the proposed antenna have been extracted through Ansoft HFSS and CST Microwave Studio simulation software and compared with the experimental results. The simulated results have been in good agreement with the experimental results. The proposed antenna characteristics have also been compared with the same dimensions of the single element TDRA, and found enhancement in bandwidth with lower resonant frequency. Its performance has also been compared with same area (equal to proposed antenna) of single element TDRA. The proposed antenna provides nearly 37% bandwidth (|S11| < −10 dB) at a resonant frequency of 5.45 GHz with 4.76 dBi peak gain. The symmetry and uniformity in the radiation patterns is obtained consistently for the entire operating bandwidth. The proposed antenna shows consistently symmetric monopole type radiation pattern with low cross polarization for WLAN (IEEE 802.16) and WiMAX applications. The performance of the proposed antenna has been compared with some similar type of dielectric resonator antenna (DRA) shapes and it has been observed that TDRA is taking very less radiation area for giving better performance than other DRA shapes.

Probe Feed Multi-Element Multi-Segment Triangular Dielectric Resonator Antenna with RCS Analysis

2019 ◽  
Vol 28 (12) ◽  
pp. 1950208
Author(s):  
Pinku Ranjan ◽  
Ravi Kumar Gangwar
Keyword(s):  
Dielectric Resonator ◽  
High Gain ◽  
Dominant Mode ◽  
Similar Type ◽  
Dielectric Resonator Antenna ◽  
General Guideline ◽  
Antenna Performance ◽  
Ansoft Hfss ◽  
Coaxial Probe ◽  
Good Agreement

The aim of the paper is to propose a design and analysis of multi-element multi-segment triangular dielectric resonator antenna (MEMS TDRA) with Radar Cross-Section (RCS). The proposed antenna has been excited through coaxial probe feed. The coaxial probe feed excites TM[Formula: see text] dominant mode fields within the TDR elements. A general guideline for wide bandwidth and high gain has been prepared for designing of MEMS TDRA. The model of the proposed MEMS TDRA has been studied through simulation (Ansoft HFSS software) and fabricated for measurement. The simulated antenna performance has good agreement with the measured one. The proposed MEMS TDRA performance has been compared with some similar type of previously published structure and found wider bandwidth and higher gain. The proposed MEMS TDRA provides monopole-like radiation pattern with nearly 39% bandwidth ([Formula: see text] dB). The average gain of 6.0 dBi has been found over the entire bandwidth. The RCS analysis has been performed for monostatic and bistatic modes at different frequencies and angles. The proposed antenna is appropriate for WLAN and WiMAX applications.

Pattern Reconfigurable High Gain Spherical Dielectric Resonator Antenna Operating on Higher Order Mode

2019 ◽  
Vol 18 (1) ◽  
pp. 128-132 ◽  
Author(s):  
Byung Kuon Ahn ◽  
Hye-Won Jo ◽  
Jong-Sang Yoo ◽  
Jong-Won Yu ◽  
Han Lim Lee
Keyword(s):  
Dielectric Resonator ◽  
High Gain ◽  
Higher Order ◽  
Dielectric Resonator Antenna ◽  
Order Mode ◽  
Higher Order Mode
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