Circularly polarised hybrid Z‐shaped cylindrical dielectric resonator antenna for multiband applications. Issue 12 (1st September 2016)

• Record Type: Journal Article
• Authors: Sharma, Anand; Gangwar, Ravi Kumar
• Is Part Of: IET microwaves, antennas & propagation. Volume 10:Issue 12(2016)
• Page Start: 1259
• Page End: 1267
• Publication Date: 2016-09-01
• Subjects: multifrequency antennas -- dielectric resonator antennas -- Q‐factor -- microstrip antennas -- polarisation; circularly polarised hybrid Z‐shaped cylindrical dielectric resonator antenna -- multiband hybrid Z‐shaped cylindrical dielectric resonator antenna -- Z‐shaped CDRA -- dual C‐shaped patch -- TE01δ mode -- quality factor -- field lines -- circular polarisation -- axial ratio bandwidth -- WLAN -- WiMAX -- satellite communication -- frequency 1.24 GHz to 1.36 GHz -- frequency 2.56 GHz to 2.88 GHz -- frequency 3.4 GHz to 4.08 GHz -- frequency 5.08 GHz to 5.72 GHz -- frequency 7.2 GHz to 8.5 GHz -- bandwidth 7.85 GHz to 8.35 GHz; Microwaves -- Periodicals; Microwave antennas -- Periodicals; Antennas (Electronics) -- Periodicals; Radio wave propagation -- Periodicals; Microwave communication systems -- Periodicals; 621.381305
• DOI: 10.1049/iet-map.2016.0035
• Languages: English
• ISSNs: 1751-8725

Abstract

Abstract : This study presents design and analysis of a multi‐band hybrid Z‐shaped cylindrical dielectric resonator antenna (CDRA) with partial ground plane. The proposed antenna design consists of Z‐shaped CDRA along with dual C‐shaped patch. Dual C‐shaped patch is used to excite TE01 δ mode, which also act as a radiator. Offset between upper and lower CDRAs is responsible for reduction in quality factor and also produce π /2 phase shift between the field lines of the proposed antenna which generates circular polarisation. The archetype of the proposed structure has been fabricated and practically validated. The proposed design operates in five frequency bands, i.e. 1.24–1.36 GHz, 2.56–2.88 GHz, 3.4–4.08 GHz, 5.08–5.72 GHz and 7.2–8.5 GHz with the fractional bandwidth of 9.23, 11.76, 18.18, 11.85 and 16.56%, respectively. Axial ratio bandwidth (AR < 3 dB) for 7.85–8.35 GHz frequency band is 6.17%. The proposed antenna may be suitable for different wireless applications like WLAN (5.2 GHz), WiMAX (2.6/3.5/5.5 GHz) and satellite communication (7.9–8.39 GHz).