A K u band frequency‐reconfigurable dielectric resonator antenna using metallic pillars

2019 ◽  
Vol 62 (4) ◽  
pp. 1760-1764 ◽  
Author(s):  
Chang‐Wu Tong ◽  
Hui Tang ◽  
Wei Qin ◽  
Wen‐Wen Yang ◽  
Jian‐Xin Chen
Keyword(s):  
Dielectric Resonator ◽  
Dielectric Resonator Antenna ◽  
Band Frequency

Structural Characteristic and Dielectric Properties of Zirconia Toughened Alumina

2020 ◽  
Vol 1010 ◽  
pp. 250-255
Author(s):  
Nik Akmar Rejab ◽  
Nurul Khairunnisa Su ◽  
Wan Fahmin Faiz Wan Ali ◽  
Mohd Fadzil Ain ◽  
Zainal Arifin Ahmad ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Dielectric Resonator ◽  
Cutting Tool ◽  
High Hardness ◽  
Xrd Analysis ◽  
Dielectric Resonator Antenna ◽  
Frequency Range ◽  
Band Frequency ◽  
X Band ◽  
Zirconia Toughened Alumina

Zirconia toughened alumina (ZTA) has shown a great effect in the cutting tool application due to its high hardness and comparable fracture toughness. However, the capability of the materials to be applied in as the dielectric resonator antenna (DRA) is not being discussed in detail. In this study, an attempt is made to further explore the potential of ZTA to be applied in DRA. Various related characterization techniques were applied that is subjected to DRA properties. The addition of CeO2 (0 wt.% to 15 wt.%) on ZTA has been pressed into pellets shape and sintered at 1600 °C for 2 hours under pressureless conditions. Based on the XRD analysis, only corundum and yttria doped zirconia phases were present. Shift in position of the zirconia peaks was observed due to an existence of Ce2Zr3O10 phase. For the DRA measurement, ZTA with 10 wt.% CeO2 addition have resonated at 6.76 GHz which is suitable for X-band applications. Meanwhile the radiation pattern indicated the omnidirectional characteristic, which suggested that the signal could be received by this dielectric antenna in various positions. Therefore, ZTA- 10 wt.% CeO2 have high potential to be used as DRA that operates X-band frequency range applications.

scholarly journals Single Feed Aperture-Coupled Wideband Dielectric Resonator Antenna with Circular Polarization for Ku-Band Applications

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Joshua M. Patin ◽  
Satish K. Sharma
Keyword(s):  
Circular Polarization ◽  
Dielectric Resonator ◽  
Ground Plane ◽  
Axial Ratio ◽  
Resonant Mode ◽  
Center Frequency ◽  
Back Side ◽  
Dielectric Resonator Antenna ◽  
Band Frequency ◽  
Ku Band

A novel single feed aperture-coupled wideband dielectric resonator antenna (DRA) exhibiting righ-handed circular polarization (RHCP) operating in the Ku-band frequency range is presented. The aperture-coupled single feed design utilizes back-side microstrip excitation through a novel bow-tie-shaped cross-slots in the ground plane. Extensive simulation parametric studies resulted in a 3 dB axial ratio (AR) bandwidth of 17.24% at a center frequency of 13 GHz, where the dielectric resonator is excited in its HEM11δresonant mode. A prototype DRA was fabricated with some limitations and experimentally verified for the impedance matching and radiation patterns showing circular polarization.

Bandwidth Enhancement of Cylindrical Dielectric Resonator Antenna Using Thin Dielectric Layer Fed by Resonating Slot

Frequenz ◽  
2016 ◽  
Vol 70 (9-10) ◽  
Author(s):  
Nipun K. Mishra ◽  
Soma Das ◽  
Dinesh K. Vishwakarma
Keyword(s):  
Dielectric Layer ◽  
Dielectric Resonator ◽  
Dielectric Resonator Antenna ◽  
Frequency Range ◽  
Band Frequency ◽  
Bandwidth Enhancement ◽  
X Band ◽  
Low Permittivity ◽  
Thin Dielectric Layer

AbstractIn this paper Cylindrical Dielectric Resonator Antenna (CDRA) has been designed for X-band frequency range applications with slot feeding. Bandwidth of designed cylindrical dielectric resonator antenna has been enhanced by making the slot to be resonating and inserting very thin low permittivity dielectric layer between the slot and CDRA. Resonating slot excites the closely spaced HEM

A DUAL BAND FREQUENCY AND PATTERN RECONFIGURABLE DIELECTRIC RESONATOR ANTENNA

2012 ◽  
Vol 27 ◽  
pp. 115-128 ◽  
Author(s):  
M. Gulam Nabi Alsath ◽  
B. Sridhar ◽  
Kanagasabai Malathi ◽  
R. Rajesh Kumar ◽  
N. Karthik ◽  
...  
Keyword(s):  
Dielectric Resonator ◽  
Dual Band ◽  
Dielectric Resonator Antenna ◽  
Band Frequency

scholarly journals 1×4 Dielectric Resonator Antenna Array with Corporate Feed for C-Band RADAR

2019 ◽  
Vol 8 (9) ◽  
pp. 1046-1049
Keyword(s):  
Antenna Array ◽  
Dielectric Resonator ◽  
Return Loss ◽  
Impedance Matching ◽  
Beam Width ◽  
Dielectric Resonator Antenna ◽  
Band Frequency ◽  
Radar Applications ◽  
Equal Split ◽  
Microstrip Feed

A four element 1×4 dielectric resonator antenna array with corporate feed structure has been designed and investigated in this paper. microstrip feed has been used to power the corporate feed structure. Proposed antenna radiates at the C-band frequency of 6.5GHz which is widely used for the RADAR applications. For the design of corporate feed equal split Wilkinson power divider concept is been used. Arlon material has been used as base to the antenna which is having a thickness of 0.79mm. Proposed antenna is having a gain of 12dB. From the return loss and smith chart plots we can observed the impedance matching characteristics of the antenna array. A beam width of 250 is obtained with a SLL of 15dB which is best acceptable for array applications.

Design and Analysis of Wideband Dielectric Resonator Antenna with Bandwidth and Gain Enhancement for C-Band Applications

2018 ◽  
Vol 11 (6) ◽  
pp. 352 ◽  
Author(s):  
Sharif Ahmed Qasem ◽  
Tan Kim Geok ◽  
Mohamad Yusoff Alias ◽  
Ferdous Hossain ◽  
Naif Alsowaidi
Keyword(s):  
Dielectric Resonator ◽  
Dielectric Resonator Antenna ◽  
Gain Enhancement
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