Metaloop Antenna with a Conducting Plate

A metaloop antenna (MLA) has open space within its loop. This paper investigates the placement of electronic components within this space. For this, the components are generalized by a square conducting plate of perimeter length P
SQR
. The antenna characteristics for the MLA, for which perimeter length P
MLA
is larger than λ
0
, are evaluated by changing P
SQR
, where λ
0
is the free space wavelength at the operating frequency. It is found that an MLA of P
MLA
= 1λ
g
(with λ
g
being the guided wavelength of the current on the loop) continues radiating a broadside beam of circular polarization until the conducting plate and the MLA are in close proximity.