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Compact Full Ka-Band Waveguide Directional Coupler Based on Rectangular Aperture Array with Stairs
| Content Provider | MDPI |
|---|---|
| Author | Deng, Xida Dong, Ge Dai, Xuan Deng, Jinxiang |
| Copyright Year | 2021 |
| Description | This article presents a compact 3 dB waveguide directional coupler with full waveguide bandwidth. It consists of a pair of rectangular waveguides with stairs structures in the coupling region. The waveguides are placed parallel to each other along their broad wall, which has a rectangular aperture array. The compact size, broad bandwidth, good in-band coupling flatness, and good return loss are achieved by using the proposed structure. For verification purposes, a prototype of the proposed coupler was designed, manufactured, and measured. The experimental results show that over the full waveguide bandwidth a return loss of input port better than 17.46 dB, coupling strength varying between −2.74 dB and −3.80 dB, power-split unbalance within 0.76 dB, and an isolation better than 20.82 dB were obtained. The length of the coupling region was only 15.82 mm. |
| Starting Page | 745 |
| e-ISSN | 2072666X |
| DOI | 10.3390/mi12070745 |
| Journal | Micromachines |
| Issue Number | 7 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2021-06-25 |
| Access Restriction | Open |
| Subject Keyword | Micromachines Telecommunications Compact Directional Coupler Microwave Coupler Full Bandwidth 3 Db Rectangular Aperture |
| Content Type | Text |
| Resource Type | Article |
