A 3-D Printed Lightweight X-Band Waveguide Filter Based on Spherical Resonators
Research output: Contribution to journal › Article
Authors
Colleges, School and Institutes
External organisations
- School of Physical Electronics
- University of Electronic Science and Technology of China
- School of Electronic, Electrical and Systems Engineering, University of Birmingham
- School of Physical Electronics, University of Electronic Science and Technology of China
Abstract
A fifth order X-band waveguide bandpass filter, based on spherical resonators, has been designed, and fabricated by 3-D printing. In comparison with rectangular waveguide, spherical resonators have a higher unloaded quality factor, but at the same time suffer from closer higher order modes. In this letter, a special topology has been proposed to relieve the impact of the first three higher order modes in the resonator and ultimately to achieve a good out-of-band rejection. Stereolithography based 3-D printing is used to build the filter structure from polymer and a 25 microns thick copper layer is deposited to the filter. The measurement result of the filter has an excellent agreement with the simulations. The filter is also considerably lighter than a similar metal filter.
Bibliographic note
This paper won the 2017 Tatsuo Itoh Prize of the IEEE Microwave Theory and Techniques Society. This award recognizes the most significant contribution by a published paper in the IEEE Microwave and Wireless Components Letters Journal
Details
| Original language | English |
|---|---|
| Article number | 7115191 |
| Pages (from-to) | 442-444 |
| Number of pages | 3 |
| Journal | IEEE Microwave and Wireless Components Letters |
| Volume | 25 |
| Issue number | 7 |
| Early online date | 1 Jun 2015 |
| Publication status | Published - 2 Jul 2015 |
Keywords
- 3-D printing, Filter, spherical resonators, stereolithography, waveguide