Waveguide slot antenna

• Main Authors: CAI YAOYAO, TIAN DONGXUN, ZHENG WEIJUN
• Format: Patent
• Language: English
• Published: 23.12.2015
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

The invention discloses a waveguide slot antenna comprising a lower conduction plate, a middle conduction plate, a circuit layer and an upper conduction plate stacked in sequence; the middle and lower conduction plates are jointed so as to form an inner cavity-shape waveguide used for transmitting signals; the middle conduction plate is provided with a resonant cavity arranged corresponding to the waveguide and connected with the waveguide; the upper portion of the resonant cavity is provided with a first horn-shape cavity; the circuit layer is arranged between the middle conduction plate and the upper conduction plate, and comprises a plurality of bar-shape circuit boards distributed corresponding to the resonant cavity; the upper conduction plate is provided with a second horn-shape cavity matched with the first horn-shape cavity, and the second horn-shape cavity penetrates the upper conduction plate in the thickness direction. The waveguide slot antenna can improve reception efficiency of circular polarization signals, thus realizing efficient high gain reception of the circular polarization signals.