Abstract
This article proposes an analytical design methodology for dual-band hybrid couplers and baluns structures for any arbitrary frequency ratio using a stub-loaded transmission line. An analysis of changing the impedance behavior of the stub, is carried out for the two bands of operation, which along with a dispersive analysis, emphasizes certain conditions where the existing methodology is not applicable. In addition, an extra degree of freedom has been included to increase the solutions for a given frequency ratio, thus providing greater flexibility and feasibility of the proposed structure. The design methodology is experimentally validated with the design and fabrication of dual-band branch-line and rat-race couplers for various commercial frequency bands.
| Original language | English |
|---|---|
| Pages (from-to) | 325-335 |
| Number of pages | 11 |
| Journal | International Journal of RF and Microwave Computer-Aided Engineering |
| Volume | 21 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - May 2011 |
Keywords
- branch-line hybrid
- CDMA
- commercial communication bands
- couplers
- dispersion
- dual-band
- GSM
- microstrip
- rat-race balun
- stub-loaded line
- transmission line
- WCDMA
- WiMax
ASJC Scopus subject areas
- Computer Science Applications
- Computer Graphics and Computer-Aided Design
- Electrical and Electronic Engineering