Abstract
A high-temperature superconducting bandpass filter at 408 MHz using microstrip quarter-wavelength spiral resonators is demonstrated. The quarter-wavelength spiral resonators were shorted to ground, as in a combline filter, via a grounding strip that is attached to the box wall by a number of aluminum bonding wires. The introduction of the normal metal wires does not introduce a measurable attenuation. The filter achieves a symmetrical quasi-elliptic characteristic by using two cross-coupling links. The experimental results of the filter are in very good agreement with the simulated ones.
| Original language | English |
|---|---|
| Pages (from-to) | 559-563 |
| Number of pages | 5 |
| Journal | IEEE Transactions on Microwave Theory and Techniques |
| Volume | 54 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Feb 2006 |
Keywords
- quasi-elliptic
- combline
- bandpass filter
- spiral
- quarter-wavelength
- superconducting
- microstrip