Abstract
In the previous work, it was found that filter designed with 0° feed structure could have two extra transmission zeros in the stopband. In this paper, a method for tuning the frequencies of these two transmission zeros using impedance transformers is proposed. These zeros can be tuned to reject unwanted signals near the passband, such as image signals. This new approach has been experimentally verified with three second-order Butterworth filters.
| Original language | English |
|---|---|
| Pages (from-to) | 2175-2178 |
| Number of pages | 4 |
| Journal | IEEE MTT-S International Microwave Symposium Digest |
| Volume | 1 |
| Publication status | Published - 2001 |
| Event | International Microwave Symposium Digest IEEE MTT-S 2001 - Phoenix, AZ, United States Duration: 2001 May 20 → 2001 May 25 |
All Science Journal Classification (ASJC) codes
- Radiation
- Condensed Matter Physics
- Electrical and Electronic Engineering