Ultracompact Quarter-Mode Substrate Integrated Waveguide Self-Diplexing Antenna

Iqbal, Amjad; Al-Hasan, Muath; Mabrouk, Ismail Ben; Nedil, Mourad

Abstract

A highly compact substrate integrated waveguide (SIW) self-diplexing antenna, operating at wireless local area network bands (3.6 and 5.4 GHz), is proposed in this letter. The proposed antenna consists of two closely placed (0.022λ g , where λ g is the guided wavelength at 3.6 GHz) quarter-mode SIW resonators, exited by two coaxial probes. Two rectangular slots are added to the closed-ends of each resonator to generate additional capacitances. Therefore, both resonators operate below their fundamental frequencies, and hence, miniaturization is achieved. Moreover, a reliable circuit model is developed to validate the design process. The proposed antenna has ultracompact dimensions of 0.08λ g 2 with simulated gains of 4.9 and 5.34 dBi at 3.6 and 5.4 GHz, respectively. In addition, the simulated isolation levels are 32.5 and 36.6 dB at the lower and higher resonant bands, respectively. Furthermore, both resonant frequencies can be independently controlled by changing the length of the capacitive slots. Due to its compactness, independent resonance control and high isolation, the proposed antenna is suitable for compact and planar radio frequency components.

Citation

Iqbal, A., Al-Hasan, M., Mabrouk, I. B., & Nedil, M. (2021). Ultracompact Quarter-Mode Substrate Integrated Waveguide Self-Diplexing Antenna. IEEE Antennas and Wireless Propagation Letters, 20(7), 1269-1273. https://doi.org/10.1109/lawp.2021.3077451

• Journal Article Type: Article
• Acceptance Date: Apr 30, 2021
• Online Publication Date: May 4, 2021
• Publication Date: Jul 7, 2021
• Deposit Date: May 26, 2023
• Journal: IEEE Antennas and Wireless Propagation Letters
• Print ISSN: 1536-1225
• Electronic ISSN: 1548-5757
• Publisher: Institute of Electrical and Electronics Engineers
• Volume: 20
• Issue: 7
• Pages: 1269-1273
• DOI: https://doi.org/10.1109/lawp.2021.3077451
• Public URL: https://durham-repository.worktribe.com/output/1172870