This invention discloses a bandwidth-reconfigurable dual-polarized
dielectric patch antenna for full-duplex communication. The antenna consists of a rectangular
dielectric patch with a pair of grooves etched along its edges and two substrate
layers. In the X-polarization direction, a single port is used to excite the fundamental mode TM. 10 mode and higher mode TE 12 This mode is used for
broadband transmitter operation. For the Y-polarization direction, a differential feed structure is used to excite a degenerate TM. 01 Mode and Inversion™ 02 This mode is used for
broadband receiver operation. A
metal ground plane is placed between two substrates, and two sets of slots are etched on it for
aperture coupling between the
dielectric patch
resonator and the
metal microstrip line located at the bottom of the lower substrate. A
variable capacitor is placed in the
coupling slot in the Y-polarization direction to tune the operating bandwidth of the dielectric
patch antenna in the Y-polarization direction. This gives the antenna advantages such as bandwidth
reconfigurability,
high isolation, low profile, and simple structure, making it promising for applications in full-duplex systems.