Abstract In this article, a dual-sense triband circularly polarized modified slot antenna loaded with metamaterial structures such as split-ring resonator and cross strips is proposed. The first resonant frequency is generated using the modified square slot which produces the two degenerative modes required to achieve circular polarization (CP). The corners of slot antenna are extended to obtain the orthogonal modes. The second resonant band is obtained using the single split-ring resonator. Two micro-splits in Split Ring Resonator (SRR) orthogonal to each other produces CP due to electric field generated by the micro-splits. The third resonance band is obtained due to loading of cross strips. The orthogonal phase is adjusted by varying the length of cross strips, so that the CP is achieved. All resonance bands are tuned independently. The measured impedance bandwidth of 31.68%, 4.55%, and 8.6% is obtained in first, second, and third bands respectively. The axial ratio bandwidth of 13.04%, 2.7%, 8.6% and peak gain of 3.8 dBic, 3.9 dBic, 3.7 dBic are obtained respectively. The simulated radiation efficiencies of above 80% is achieved in all bands. The left-hand CP is obtained in first two band as co-polarization and right-hand CP is obtained at the third band as co-polarization with respect to cross-polarization radiation. The cross-polarization of minimum −10 dB is obtained in all three bands. The proposed design is well suitable for the Bluetooth, n78 and n79 5G applications.

Vinaya Kumar Sugganapalya Rajanna

T. Venkatesh

Puneeth Kumar Tharehalli Rajanna

Shambulinga Mudukavvanavar

International Journal of Microwave and Wireless Technologies

INTERNATIONAL JOURNAL OF MICROWAVE AND WIRELESS TECHNOLOGIES 的主要目标是加强全世界微波工程师之间的交流。因此，它是跨学科和面向应用的，为微波行业提供了一个平台。涵盖范围包括：应用电磁场理论（天线、传输线和波导）、组件（无源结构和半导体器件技术）、模拟和混合信号电路、系统、光-微波相互作用、电磁兼容性、工业应用、生物效应和医学应用程序。

The primary goal of the International Journal of Microwave and Wireless Technologies is to enhance communication among microwave engineers worldwide. This interdisciplinary and application-oriented journal provides a significant platform for the microwave industry. The scope includes: applied electromagnetic field theory (such as antennas, transmission lines, and waveguides), components (passive structures and semiconductor device technologies), analog and mixed-signal circuits, systems, optical-microwave interactions, electromagnetic compatibility, industrial applications, biological effects, and medical applications.

《International Journal of Microwave and Wireless Technologies》的主要目标是促进全球微波工程师之间的交流。该期刊跨学科且注重应用，为微波行业提供了一个重要的平台。其涵盖的领域包括：应用电磁场理论（如天线、传输线和波导）、组件（无源结构和半导体器件技术）、模拟与混合信号电路、系统、光-微波相互作用、电磁兼容性、工业应用、生物效应及医学应用等。

Category	Quartile
计算机科学	4
计算机科学, 工程电子与电气	4
计算机科学, 电信学	4

Independently tunable metamaterial inspired compact triband dual-sense circularly polarized antenna

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