Citation

Yahya, Salah I. and Zubir, Farid and Nouri, Leila and Md Jizat, Noorlindawaty (2025) A New Class of Miniaturized Balanced Couplers: Low-Loss Design for Wireless Network and RF Scavenging Systems. IEEE Access, 13. pp. 149361-149372. ISSN 2169-3536

Text A New Class of Miniaturized Balanced Couplers_ Low-Loss Design for Wireless Network and RF Scavenging Systems.pdf - Published Version Restricted to Repository staff only Download (1MB)

Abstract

A new class of miniaturized balanced 0◦ microstrip filtering couplers is presented, characterized by an ultra-compact footprint of only 0.006 λ 2 g achieved through a unique configuration of coupled thin microstrip lines integrated with solid stubs. The proposed design exhibits a built-in filtering response with balanced output magnitudes and phase (0◦ phase difference) across its passband, while maintaining exceptionally low group delays (0.84 ns at S21 and 0.83 ns at S31). Operating at 1.2 GHz, the coupler achieves outstanding performance metrics, including a return loss of 31.1 dB, an insertion loss of 3.11 dB, and a coupling factor of 2.98 dB. These metrics surpass those of prior coupler designs by concurrently achieving extreme miniaturization, low loss, and minimal group delay in a single device. Close agreement between full-wave electromagnetic simulations and measurements from a fabricated prototype validates the design’s effectiveness and underscores its suitability for wireless network and RF energy scavenging systems, where extreme compactness, low loss, and phase coherence are critical.

Item Type:	Article
Uncontrolled Keywords:	Microstrip
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800-8360 Electronics > TK7871 Electronics--Materials
Divisions:	Faculty of Engineering (FOE)
Depositing User:	Ms Rosnani Abd Wahab
Date Deposited:	29 Sep 2025 09:19
Last Modified:	04 Oct 2025 12:40
URII:	http://shdl.mmu.edu.my/id/eprint/14511

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