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http://dx.doi.org/10.5515/KJKIEES.2010.21.11.1208

A Slotted Square-Patch Type Balun-BPF  

Oh, Song-Yi (College of Information Technology, Kangwon National University)
Hwang, Hee-Yong (College of Information Technology, Kangwon National University)
Publication Information
Abstract
In this paper, a microstrip balun-BPF of slotted-square-patch type is proposed. The conventional balun-BPF has some drawbacks of narrow bandwidth and high insertion loss. In order to improve these weak points, we used a square patch in designing balun-BPF on which two slots intersecting perpendicularly and one corner-edge perturbation are adopted. This structure allows one of the most effective use of the patch space so that the insertion loss can be decreased. Changing the slot lengths is use to control the operating frequency and the bandwidth of the balun-BPF. A fabricated balun-BPF shows wide bandwidth of 300 MHz(12.7 %), small insertion loss of 0.56 dB, phase difference of $184^{\circ}{\pm}15^{\circ}$ and amplitude imbalances of within 1 dB between two output ports at 2.4 GHz band.
Keywords
Balun; BPF; Balun-BPF; Square Patch Device;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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