Purpose

The purpose of this paper is to design and develop half-mode substrate-integrated waveguide (HMSIW)- and quarter-mode substrate-integrated waveguide (QMSIW)-based antennas for wireless communication application. The developed antennas offer advantages in terms of compactness, high gain and better isolation between the ports.

Design/methodology/approach

Initially, the tri-band substrate-integrated waveguide-based antenna is designed using a slot on the ground plane. Then, the same structure has been bisected into two parts for the development of the HMSIW structure. Again the concept of the slot is used for the realization of a dual-band antenna. QMSIW-based structure is designed with further dividing HMSIW structure into two parts. Simulation has been carried out with the use of a high-frequency structure simulator (HFSS) software, which used a finite element-based solver for the full-wave analysis.

Findings

The proposed HMSIW-based dual-band antenna resonates at two different frequencies, namely, 5.81 GHz with 4.5 dBi gain and at 6.19 GHz with 6.8 dBi gain. Isolation between two ports is 20 dB. The overall dimensions of the proposed model are 0.39 λ × 0.39 λ. Similarly, QMSIW-based antenna is resonated at 5.66 GHz of the frequency with the 3 dBi gain. Frequency tuning is also carried out with the change in the slot dimension to use the proposed antenna in various C (4–8 GHz) band applications.

Originality/value

The proposed antennas can use C band wireless frequency application. The proposed structure provides better performance in terms of isolation between the ports, small size, high front-to-back ratio and higher gain. It is fabricated for the proof of concept with the RT Duroid 5880 substrate material having a 2.2 permittivity. Measured results show a similar kind of performance as a simulated one.

中文翻译：

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用于无线通信应用的基于 HMSIW 和 QMSIW 的天线

目的

本文的目的是设计和开发用于无线通信应用的基于半模衬底集成波导 (HMSIW) 和四分之一模式衬底集成波导 (QMSIW) 的天线。开发的天线在紧凑性、高增益和端口之间更好的隔离方面具有优势。

设计/方法/方法

最初，三频基片集成波导天线是使用接地平面上的缝隙设计的。然后，为了开发 HMSIW 结构，相同的结构被一分为二。狭缝的概念再次用于实现双频带天线。基于 QMSIW 的结构的设计进一步将 HMSIW 结构分为两部分。使用高频结构模拟器 (HFSS) 软件进行了模拟，该软件使用基于有限元的求解器进行全波分析。

发现

所提出的基于 HMSIW 的双频天线在两个不同的频率下谐振，即 5.81 GHz 的 4.5 dBi 增益和 6.19 GHz 的 6.8 dBi 增益。两个端口之间的隔离度为 20 dB。所提出模型的整体尺寸为 0.39 λ × 0.39 λ。类似地，基于 QMSIW 的天线在 5.66 GHz 的频率下谐振，增益为 3 dBi。频率调谐也随着缝隙尺寸的变化而进行，以在各种 C (4-8 GHz) 频段应用中使用建议的天线。

原创性/价值

建议的天线可以使用 C 波段无线频率应用。建议的结构在端口之间的隔离、小尺寸、高前后比和更高增益方面提供了更好的性能。它采用具有 2.2 介电常数的 RT Duroid 5880 基板材料制造，用于概念验证。测量结果显示了与模拟类似的性能。