Quasi-Isotropic Hybrid Dielectric Resonator Antenna—Bow-Tie Patch with Harmonic Suppression

Applied Sciences

Jinsu Park¹  Dong Hyee Hwang¹  Taeyong Jeong¹  Jong Seon Lee¹  Jun Hee Kim¹  Keum Cheol Hwang¹  Dong Geun Lee¹ 

[1] Department of Electrical and Computer Engineering, Sungkyunkwan University, Suwon 16419, Korea;

关键词: quasi-isotropic pattern;    harmonics suppression;    filtering antenna;    dielectric resonator antenna;    bow-tie antenna;   

DOI  :  10.3390/app12083842

来源: DOAJ

【 摘 要 】

This paper proposes a quasi-isotropic hybrid dielectric resonator antenna (DRA) and bow-tie patch with harmonics suppression. The suggested antenna consists of a DRA, a bow-tie patch, and a microstrip seventh-order Chebyshev low-pass filter. By loading a bow-tie patch on the designed DRA, a quasi-isotropic pattern is realized. The seventh-order Chebyshev low-pass filter was applied to the feed line, and harmonics were reduced in the section separate to the operating band to remove harmonics generated by the proposed antenna. The simulated $\mathrm{S}11$ that satisfies below −10 dB is 3.09–3.3 GHz (6.25%), and the measured S11 is 3.10–3.28 GHz (5.64%). The simulated gain difference considering all radiating regions ($0^{\circ }\le \phi \le {360}^{\circ }$ and $0^{\circ }\le \theta \le {180}^{\circ }$) is 7.211 dB. Compared with the antenna without a filter, the harmonic gain was reduced by 10.847 and 15.774 dB. The measured gain isolation of the operating band and the second and third harmonics are 10.10 and 18.94 dB, respectively. The proposed antenna is considered to be applicable to applications that require radio wave reception in all directions such as wireless point access points, internet of things and radio frequency identification, and is expected to contribute to reducing the size of the RF system.

【 授权许可】

Unknown