Integration of a Very High Quality Factor Filter in Empty Substrate Integrated Waveguide at Q-band
Recently, new methodologies for manufacturing empty waveguides completely integrated in a planar substrate have been proposed in order to improve the performance of substrate-integrated devices. One of these alternatives is the so-called Empty Substrate-Integrated Waveguide (ESIW). The height of hig...
| Authors: | , , , , |
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| Format: | article |
| Publication Date: | 2018 |
| Country: | España |
| Institution: | Universidad de Castilla-La Mancha |
| Repository: | RUIdeRA. Repositorio Institucional de la UCLM |
| OAI Identifier: | oai:ruidera.uclm.es:10578/19714 |
| Online Access: | http://hdl.handle.net/10578/19714 |
| Access Level: | Open access |
| Keyword: | Quality factor Substrate Integrated Waveguide (ESIW) Substrate Integrated Waveguide (SIW) Rect- angular waveguide Microstrip transition |
| Summary: | Recently, new methodologies for manufacturing empty waveguides completely integrated in a planar substrate have been proposed in order to improve the performance of substrate-integrated devices. One of these alternatives is the so-called Empty Substrate-Integrated Waveguide (ESIW). The height of high-frequency substrates, where ESIW devices are integrated, is very small. Then, the capacity of storing energy of ESIW resonators is drastically reduced, and, as a result, their quality factor is not as high as it could be with a higher ESIW. In order to overcome this restriction, a novel integrated structure is proposed to embed very high-quality factor filters based on ESIW with increased height. As a result we show in this work, for the first time, the successful integration of an increased-height ESIW filter in a printed circuit board (PCB) of 0.305 mm height at Q-band, achieving a quality factor above 1000, which is a remarkable result for a completely substrate-integrated device operating in this frequency band. When compared with the same filter manufactured with an ESIW with the same height as the substrate, the novel filter shows a measured Q-factor 85% higher. |
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