The mutual coupling effects of flush-mounted (horizontal) monopole antennas on high-impedance ground planes (HIP) have been measured. Experiments of horizontal monopoles on HIP with a bandgap centred at 4.7 GHz show that the interference between two adjacent elements is stronger compared to those on a regular metal ground plane due to special properties of HIP. A technique using a combination of HIP and thin metal strip is proven to reduce the mutual coupling by ~6 dB. Similar results have been obtained for the horizontal monopoles on HIP with a bandgap centre at 17 GHz
Published in:
Electronics Letters
(Volume:38
,
Issue:
16
)
Date of Publication: 1 Aug 2002