A Novel HIS with a Perforated Ground Plane for Miniaturization and Bandwidth Enhancement

Durgun, Ahmet Cemal
Balanis, Constantine A.
Birtcher, Craig R.
Because of the design limitations of conventional high impedance surfaces (HIS), it is not possible to miniaturize the HIS and increase the bandwidth, simultaneously. To overcome this, a novel HIS is proposed with a periodically perforated ground plane. The magnetic flux flowing through the perforations results in an extra inductance which increases the fractional bandwidth and decreases the center frequency.