COMMUNICATION DEVICE
FIG21 is a diagram illustrating an exemplary configuration of an antenna apparatus according to an eighth variant
As illustrated in FIG21, the element 2203 forms a square loop and a plurality of loop antennas 2201 (or loop antennas 2201a and 2201b) with mutually different aspect ratios of the element 2203 is provided in the antenna apparatus 2200. Specifically, the loop antenna 2201a is formed with the element 2203 such that a direction in which the ground plane 2209 extends (or the horizontal direction of FIG21) is the longitudinal direction. Thereby, the loop antenna 2201a more dominantly transmits or receives the polarized wave RH the polarization direction of which substantially matches with the longitudinal direction than the polarized wave RV the polarization direction of which substantially matches with the short direction. That is, the loop antenna 2201a can transmit or receive the polarized wave RH in wireless signals transmitted or received by the antenna apparatus 2190. To the contrary, the loop antenna 2201b is formed with the element 2203 such that a direction (or the vertical direction of FIG21) orthogonal to the direction in which the ground plane 2209 extends is the longitudinal direction. Thereby, the loop antenna 2201b more dominantly transmits or receives the polarized wave RV the polarization direction of which substantially matches with the longitudinal direction than the polarized wave RH the polarization direction of which substantially matches with the short direction. That is, the loop antenna 2201b can transmit or receive the polarized wave RV in wireless signals transmitted or received by the antenna apparatus 2190.
diagram
2209
ground plane
2203
element
2200
antenna apparatus
2201
loop antenna loop antennas
2205
power supply point
['6. The communication apparatus according to claim 5, wherein at least any of the first antenna device and the second antenna device is configured as any of a monopole antenna, a dipole antenna, a one-side short-circuit planar antenna, a notch antenna, an inverted F-antenna, a loop antenna, and a slot antenna.']