Miniaturized size of dual-band-meandered branch-line coupler for WLAN application

• Main Authors: Md. Jizat, N., Abdul Rahim, Sharul Kamal, Abd. Rahman, Tharek, Abdulrahman, A. Y., Sabran, M. I., Hall, P. S.
• Format: Article
• Published: Wiley Periodicals, Inc. 2011
• Subjects: TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utm.my/id/eprint/29305/; http://dx.doi.org/10.1002/mop.26312
• Institution: Universiti Teknologi Malaysia

A new method of a dual-band miniaturized branch-line coupler (BLC) is presented with two widely separated bands (f2 > 2f1) for wireless local area network application. Partially meandered lines are used as the coupler's shunt arms; and are designed to operate at f1 = 2.45 GHz and f2 = 5.8 GHz. There are 65 and 90% reduction in circuit area compared to the previous research design. Theoutput signal ports have an equal power split within measurement accuracy and 2° error at the resonant frequencies. The simulated and measured results are in good agreement, thereby verifying the design concept.