Ka-waveband low-profile broadband high-gain annular cylindrical dielectric resonator antenna

• Main Authors: YU BING, DENG JIAN, JU LIUJUAN, JIA HONGCHUAN, SU PENG, LIU QINQIN
• Format: Patent
• Language: Chinese; English
• Published: 25.09.2020
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

The invention discloses a Ka-waveband low-profile broadband high-gain annular cylindrical dielectric resonator antenna. A main radiation unit is a cylindrical dielectric resonator, and compared with ametal material, the ohmic loss is lower, and the efficiency is higher. The dielectric annular ring surrounding structure enables electromagnetic waves to form standing waves, the standing waves are limited in the ring as much as possible, and energy is more concentrated. Grooves are formed in the surface of the cylindrical medium, surface current is cut off, and part of gain is improved; high-efficiency coupled feeding of the dielectric resonator is achieved through the equiangular spiral slot, a regular linear slot structure is adopted for feeding of a traditional slot antenna, the equiangular spiral slot antenna is a typical broadband antenna, the equiangular spiral slot structure is applied to the feeding structure, and the effect of improving the bandwidth of the antenna is achieved. 本发明公开了一种Ka波段低剖面宽带高增益环形圆柱介