Dual-Layer Corrugated Plate Antenna

Abstract

A subwavelength slot fed high gain and compact dual layer corrugated plate antenna is presented in this paper. The antenna is realized by placing a second corrugated layer on top of the traditional corrugated plate antenna. The addition of the second layer generates waves reflection that produces multi-resonance frequencies to improve the antenna's bandwidth. Compared to a traditional single layer corrugated plate antenna, the proposed dual layer antenna has higher gain, lower side lobe level, narrower half power beam width (HPBW) and better impedance bandwidth. A prototype of the proposed antenna is built and tested. It has a measured peak gain of 16.3 dB at 11.3 GHz and an impedance bandwidth of 27%. The operating principle of the proposed antenna is also discussed and analysed.

High aperture efficient slot antenna surrounded by the cavity and narrow corrugations at Ka‐band and Ku‐band

“…Adding more periodic corrugations to the surface of the structure will contribute to further improvement in the overall antenna gain, but it will reduce the aperture efficiency of the antenna. This is due to the overall size increment of the structure as typically the corrugations period (P) and depth is equivalent to the operation wavelength P + D ≃ λ [3,9]. Moreover, the relationship between the size, gain, aperture efficiency, and number of corrugations for the Ka-band antenna was studied and shown in Table 2.…”

“…A resonant slot antenna perforated in a metallic plate and surrounded by corrugations was widely employed to deliver high directivity performance at microwave, THz and optical frequencies [1][2][3][4][5][6][7]. These corrugations can have a straight shape as in [2][3][4][5][6][7][8][9] or circular shape which also called 'Bull's eye' (B-E) as in [10][11][12][13][14]. These corrugated structures have a lot of advantages, e.g.…”

Additively manufactured trapezoidal grooves for wideband and high gain Ku‐band antenna

“…Grooves can be used either to increase directivity, or suppress higher order modes or reduce cross‐polarization components of radiated fields. The effect of grooves has been well studied and applied to feeder antennas, highly directive Bull's Eye antenna, and slot‐coupled antennas . In most of these applications, multiple grooves were used to create a surface wave on the surface of the structure with the aim of in‐phase radiation on the broadside.…”

2D Gain Enhancement Based on Single-Layer SIW Corrugated Technique with Slot Array Feeder

“…Obviously, the slit array requires multiple rectangular waveguides, which increases the total weight and profile, and cannot be used in compact space of wireless terminals. Another method to achieve 2D gain enhancement [9] employed a dual metallic corrugated plate, with three radiation slots on the top layer. However, the metallic technique makes the antenna heavy and cannot be used in the wireless terminals such as mobile phone.…”