Bulk-glass ceramic based stacked dielectric resonator antenna as phased array element

In the design of circularly polarized (CP) dielectric resonator antenna (DRA) arrays, the regular-shaped DRAs with simple feeding configurations are mostly used as array elements to make the design procedure more efficient. However, such array element DRA usually achieves only about 6% axial ratio (AR) bandwidth. In this paper, a CP DRA element coupled by a fractal cross-slot which can radiate efficiently and excite the rectangular DRA simultaneously is considered. By adjusting the dimensions of the fractal cross-slot properly, the resonances of the fractal cross-slot and the dielectric resonator can be merged to obtain a wider AR bandwidth. Based on the proposed fractal cross-slot-coupled CP DRA element, two different CP DRA arrays are designed: a wideband CP DRA array and a low-sidelobe-level (SLL) CP DRA array. The designed DRA arrays are fabricated and measured, and structures and performances of the arrays are presented and discussed.

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Investigation on Harmonic Tuning for Active Ku-Band Rectangular Dielectric Resonator Antennas

International Journal of Antennas and Propagation ◽

10.1155/2008/437538 ◽

2008 ◽

Vol 2008 ◽

pp. 1-6 ◽

Cited By ~ 1

Author(s):

Anda Guraliuc ◽

Giuliano Manara ◽

Paolo Nepa ◽

Giuseppe Pelosi ◽

Stefano Selleri

Keyword(s):

Dielectric Resonator ◽

Shape Factor ◽

Phased Array ◽

Fine Tuning ◽

Dielectric Resonator Antenna ◽

Dielectric Resonator Antennas ◽

Power Added Efficiency ◽

Radiating Element ◽

Integrated Antenna ◽

Ku Band

A slot-coupled rectangular dielectric resonator antenna (DRA) operating in the 14–14.5 GHz frequency band is investigated as a possible radiating element for an active integrated antenna of a transmitting phased array. The effectiveness of the resonator shape factor on achieving harmonic tuning is addressed. Simulation results show that the DRA shape factor can be used to provide a fine tuning of the DRA input impedance both at the fundamental frequency and its first harmonics, so synthesizing the proper load for the optimization of the microwave amplifier power-added efficiency (PAE).

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Dielectric resonator antenna phased array with liquid crystal based phase shifters

The 8th European Conference on Antennas and Propagation (EuCAP 2014) ◽

10.1109/eucap.2014.6902310 ◽

2014 ◽

Cited By ~ 4

Author(s):

Arshad Mehmood ◽

Onur Hamza Karabey ◽

Muhammed Ayluctarhan ◽

Yuliang Zheng ◽

Hubertus Braun ◽

...

Keyword(s):

Liquid Crystal ◽

Dielectric Resonator ◽

Phased Array ◽

Phase Shifters ◽

Dielectric Resonator Antenna

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Compact Low-Cost Phased Array of Dielectric Resonator Antenna Using Parasitic Elements and Capacitor Loading

IEEE Transactions on Antennas and Propagation ◽

10.1109/tap.2012.2237535 ◽

2013 ◽

Vol 61 (4) ◽

pp. 2318-2321 ◽

Cited By ~ 28

Author(s):

Mohammad Ranjbar Nikkhah ◽

J. Rashed-Mohassel ◽

Ahmed A. Kishk

Keyword(s):

Dielectric Resonator ◽

Phased Array ◽

Low Cost ◽

Dielectric Resonator Antenna

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Experimental Study on LTCC Glass-Ceramic Based Dual Segment Cylindrical Dielectric Resonator Antenna

Journal of Ceramics ◽

10.1155/2013/906748 ◽

2013 ◽

Vol 2013 ◽

pp. 1-8 ◽

Cited By ~ 1

Author(s):

Ravi Kumar Gangwar ◽

S. P. Singh ◽

Meenakshi Choudhary ◽

D. Kumar ◽

G. Lakshmi Narayana Rao ◽

...

Keyword(s):

Experimental Study ◽

Contact Angle ◽

Resonant Frequency ◽

Glass Ceramic ◽

Material Properties ◽

Dielectric Resonator ◽

Return Loss ◽

Contact Angle Measurement ◽

Angle Measurement ◽

Dielectric Resonator Antenna

The measured characteristics in C/X bands, including material properties of a dual segment cylindrical dielectric resonator antenna (CDRA) fabricated from glass-ceramic material based on B2O3–La2O3–MgO glass and La(Mg0.5Ti0.5)O3 ceramic, are reported. The sintering characteristic of the ceramic in presence of glass is determined from contact angle measurement and DTA. The return loss and input impedance versus frequency characteristics and radiation patterns of CDRA at its resonant frequency of 6.31 GHz are studied. The measured results for resonant frequency and return loss bandwidth of the CDRA are also compared with corresponding theoretical ones.

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