Abstract
The multiple-branch strips have been found to offer the antenna engineer with a significant amount of design flexibility to achieve multiband operations. By binding two or three strips and printing them on an FR4/Epoxy substrate, a multiband antenna can be obtained for WLAN systems and DCS1800 or PCS1900 operation with a compact and low-profile configuration. The resonant frequencies can be changed by tuning the length of the strips and the mutual coupling among them. A spiral monopole can provide multiple-resonant modes. By properly spiralling the monopole strip, good impedance matching and bandwidth can be obtained for the first two modes. Considering the effects of the slots arising from the spiral strip, the location of the resonant frequencies can be further fine-tuned. The antennas based on these techniques have been successfully implemented with compact, low-profile configurations for mobile communications and WLAN applications.
| Original language | English |
|---|---|
| Title of host publication | Printed antennas for wireless communications |
| Editors | R Waterhouse |
| Place of Publication | Chichester, UK |
| Publisher | John Wiley & Sons |
| Pages | 257-279 |
| Number of pages | 23 |
| ISBN (Electronic) | 9780470512241 |
| ISBN (Print) | 9780470510698 |
| DOIs | |
| Publication status | Published - 5 Nov 2007 |
Keywords
- Coplanar waveguides (CPWs) and microwave circuits
- Dielectric substrate and microstrip line
- Dual-arm and triple-arm monopole antenna
- Mobile communication bands
- Multiple-resonant modes
- Quad-band operations
- Simulated radiation patterns