The application discloses a kind of ultra-
wideband miniaturized vertical polarization end-fire antennas, belong to
wireless communication technology and
radar technology field.The antenna includes columnar
metal carrier, half-module
Vivaldi antenna and PCB top plate;Half-module
Vivaldi antenna is uniformly arranged on the outside of
metal carrier, and PCB top plate is arranged above half-module
Vivaldi antenna, and they are vertically arranged and electrically connected;Arc-round combined slot is arranged on the
radiation patch of half-module Vivaldi antenna, first rectangular slot is arranged on the PCB top plate, and they are communicated and synergistic, form slot
radiation mode working in
low frequency band;Two rows of periodic U-shaped slots are further arranged on the PCB top plate, compensate the impedance mismatch caused by
ground current change, break the horizontal polarization current path at the same time, improve the
cross polarization performance of antenna.The application adopts half-module low profile Vivaldi structure, reduces the space occupied by antenna;Through slot
radiation mode, working
cut-off frequency is effectively reduced, and
low frequency bandwidth is expanded;Periodic slotting structure improves
cross polarization characteristics and realizes good conformal.The application has the characteristics of ultra-
wideband and
miniaturization, and is suitable for
wireless communication and
radar system.