Notched Ground Antenna Isolation in Compact PCB

The ground plane is segmented by introducing notches that divide the continuous ground into separate regions. This segmentation isolates the current paths of adjacent antennas, preventing mutual interference while maintaining compact device dimensions. The notched ground structure creates electrical separation between antenna elements without increasing overall device volume.

The ground plane is modified locally at specific positions where antennas are placed, introducing notches only in those regions. This local modification approach maintains the overall compact ground structure while creating targeted isolation zones. The notches are strategically positioned to affect only the immediate antenna regions, preserving device compactness while reducing interference locally.

The harmful edge currents are extracted or removed from the ground edge by introducing notches that interrupt the current path. The notches effectively take out the problematic continuous ground edge that supports harmful currents, replacing it with a discontinuous structure that prevents current accumulation at edges while maintaining antenna placement flexibility.

The notched ground structure converts the potentially harmful continuous ground edge into a beneficial isolated structure. By strategically placing notches, the ground edge that would normally support harmful currents is transformed into a current-isolating feature. The notches create natural current barriers that redirect and contain currents within desired paths, turning the ground edge from a source of interference into an isolation mechanism.