Abstract
In this letter, a compact Ridge Substrate Integrated Waveguide (RSIW) filter with transmission zeros (TZs) is developed by employing the higher-order mode coupling and the mixed electric and magnetic coupling. A novel RSIW cavity with triangular ridge is designed to implement the coupling of the higher-order mode in order to achieve a TZ above the passband. The mixed coupling is employed to obtain another TZ below the passband without increasing the size of the filter. A prototype of the mixed-coupled RSIW filter with triangular ridge is designed and tested. It is shown that high selectivity and compact size are achieved for the proposed filter.
| Original language | English |
|---|---|
| Article number | 7332256 |
| Pages (from-to) | 778-780 |
| Number of pages | 3 |
| Journal | IEEE Microwave and Wireless Components Letters |
| Volume | 25 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2 Dec 2015 |
| Externally published | Yes |