Linear high‐gain bidirectional slot array fabricated by narrow bent metallic line

Abstract

A linear high-gain slot array with bidirectional broadside radiation is proposed. By utilising a novel slot-energising approach, the slot array obtains a simple and compact geometry, which could be fabricated by a narrow bent metallic line. The slot array achieves an approximately constant magnitude distribution on a long radiating aperture by adopting proper slot elements arrangement and optimising the dimensions. Thus, compared to the existing bidirectional slot arrays in the open literature, the proposed slot array generates a higher gain and moderate gain-to-length ratio. To confirm the build strategy, a prototype with the length of 6.3 wavelength at the centre frequency of 2.4 GHz is constructed, fabricated, and tested, which realises a high gain of 14.0 dBi. With the merits of small size, high gain, low cost, and high-power capacity, the proposed slot array is an attractive substitute for various long-distance communication systems.

A compact high‐gain slot antenna array with a bidirectional broadside radiation pattern

“…In [14], two parasitic elements were induced adjacent to the slot in the third mode to cancel the effect of the reverse current, providing both high gain and low sidelobe level. In [15], a slot array utilizing a bent metallic line was introduced, with the G/A value significantly augmented.…”

An X-band gain-enhanced bidirectional antenna array using strip-loaded dielectric resonator operating in TE3δ1 mode

“…As the development of the long-distance wireless communication systems (such as long-street, long bridges, tunnels, highways, and railways), bidirectional antenna array has received everincreasing attention due to its special opposite converge radiation pattern and high gain characteristics. In the past decades, a lot of researches have been done to design the bidirectional antennas [1][2][3][4][5][6]. In [1], a bidirectional end-fire antenna array with six parasitic elements is developed for coal mine or tunnel communication.…”