Abstract
A novel approach for reducing the electromagnetic coupling between planar inverted-F antennas (PIFAs), built on a common ground plane and forming antenna arrays on handheld devices, is presented. The proposed technique is based on the insertion of two coupled quarter-wavelength slits on the ground plane between the antennas. By optimising the distance between the coupled slits, a magnetic resonance can be established within the operating bandwidth of the PIFAs. This resonance inserts a transmission zero in the coupling path between the closely spaced PIFAs, enabling the reduction of the coupling between them to very low levels without significantly disturbing their operating bandwidth.
| Original language | English |
|---|---|
| Pages (from-to) | 1442-1444 |
| Number of pages | 3 |
| Journal | Electronics Letters |
| Volume | 44 |
| Issue number | 25 |
| DOIs | |
| Publication status | Published - 1 Jan 2008 |