Abstract
In this letter, a miniaturized planar two-pole microwave filter with two transmission zeros is presented. The building block of this filter is a high-Q double spiral slot resonator backed by a conductor plane. The provision of a float back conductor plane allows vertical integration of this filter with other passive and active RF electronic components usually found in miniaturized wireless transceivers. The conductor plane also provides a coupling mechanism between the input and output of the filter giving rise to transmission zeros. It is shown that the location of transmission zeros can easily be adjusted and significant out-of-band rejection be achieved using only two miniaturized double-spiral resonators. The design procedure and fabrication of a two-pole filter operating at 2.11 GHz is demonstrated and a very good agreement between measured and simulated results is shown.
| Original language | English |
|---|---|
| Pages (from-to) | 660-662 |
| Number of pages | 3 |
| Journal | IEEE Microwave and Wireless Components Letters |
| Volume | 16 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2006 Dec |
| Externally published | Yes |
Bibliographical note
Funding Information:Manuscript received June 2, 2006; revised June 15, 2006. This work was supported by the Korea Science and Engineering Foundation under Grant D00103. The authors are with the Radiation Laboratory, Department of Electrical Engineering and Computer Science, The University of Michigan, Ann Arbor, MI 48109-2122 USA (e-mail: [email protected]; [email protected]). A color version of Fig. 4 is available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/LMWC.2006.885612
Keywords
- Elliptic-response
- Microwave filter
- Slot-line resonator
- Transmission zeros
ASJC Scopus subject areas
- Condensed Matter Physics
- Electrical and Electronic Engineering