Multi-Stage Rat-race Ring Coupler for Broadband Application
Sun-Kuk Noh1, Tae-Soon Yun2
1Sun-Kuk Noh, SW Convergence Education Institute, Chosun University, Gwangju, Republic of Korea.
2Tae-Soon Yun, Department of Electronics Engineering, Honam University, Gwangju, Republic of Korea.
Manuscript received on 09 May 2019 | Revised Manuscript received on 19 May 2019 | Manuscript Published on 23 May 2019 | PP: 1286-1288 | Volume-7 Issue-6S5 April 2019 | Retrieval Number: F12220476S519/2019©BEIESP
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: In this paper, the design method of the multi-stage rat-race ring for the wideband application is suggested. Suggested structure is simply uniplanar structure. Designed multi-stage rat-race ring with 3dB-coupling has the differenced phase of in-phase or out-of-phase. Theoretically, the bandwidth of 3 stage rat-race ring has 202.6% compare with the single rat-race ring. Fabricated 3 stage rat-race ring has the insertion loss and bandwidth of 3.29dB and 62.7%, respectively. Also, the differenced magnitude and phase between outputs is measured 0.04dB and 181.47°, respectively.
Keywords: Rat-Race Ring, Coupler, Bandwidth, Multi-Stage.
Scope of the Article: Multi-Agent Systems