Broadband miniaturized low-profile horizontally polarized omnidirectional antenna

• Main Authors: MENG JIANQING, SHI YANGYI
• Format: Patent
• Language: Chinese; English
• Published: 02.06.2020
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

The invention discloses a broadband miniaturized low-profile horizontally polarized omnidirectional antenna. The antenna comprises a dipole, a central bonding pad, a transmission line connecting a radiation unit with the central bonding pad, and an impedance matching branch knot on the transmission line. A dipole arm is provided with a plurality of sections of trapezoidal grooves. The antenna cancover 2.1-4.2 GHz working frequency bands, the out-of-roundness in the whole frequency band is smaller than 3dB, the VSWR is smaller than or equal to 2.0, and the antenna has the characteristics of broadband, miniaturization and low profile and is widely applied to electronic equipment such as mobile communication and modern radars. By redesigning the structural size of the dipole and adjusting the multi-section trapezoidal groove and the impedance matching branch knot, the working frequency band of the horizontally polarized omnidirectional antenna can be changed by using the horizontally polarized omnidirectional an