A Low-Profile Substrate-Integrated-Gap-Waveguide- Fed Magnetoelectric Dipole

• Published in: IEEE antennas and wireless propagation letters Vol. 17; no. 8; pp. 1373 - 1376
• Main Authors: Shen, Dongya, Ma, Chaojun, Ren, Wenping, Zhang, Xiupu, Ma, Zuhui, Qian, Rongrong
• Format: Journal Article
• Language: English
• Published: New York IEEE 01.08.2018; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Antenna; Antenna measurements; Antenna radiation patterns; Antennas; Bandwidths; Dipole antennas; Dipoles; Far fields; Gain; High gain; low profile; magnetoelectric (ME) dipole; Microstrip; millimeter wave (MMW); Periodic structures; substrate-integrated gap waveguide (SIGW); Substrates; Waveguide discontinuities
• ISSN: 1536-1225; 1548-5757
• DOI: 10.1109/LAWP.2018.2845848

In this letter, a magnetoelectric (ME) dipole antenna with characteristics of low profile, easy integration, wide band, and high gain is proposed. The ME dipole is composed of rectangular patches and metallic via holes, and is embedded in a square aperture etched on substrate-integrated gap waveguide (SIGW). In particular, the ME dipole is fed by a coplanar strip line, which is designed in SIGW to realize a low profile of 0.19λ g (λ g is the guide wavelength at center frequency). The measurements show that the 10 dB impedance bandwidth of the antenna is 29%, ranging from 22.4 to 30 GHz, with a mean gain of 8.04 dBi. Furthermore, the antenna emits a stable radiation pattern, validated by the far-field measurements.