A vhf-uhf band broadband omnidirectional receiving antenna

Abstract

The invention discloses a VHF-UHF band broadband omnidirectional receiving antenna, which includes a first structure and a second structure arranged symmetrically up and down, and the first structure includes a first conical vibrator, a second conical vibrator and several connecting rods , the second structure includes a second conical vibrator, a first conical vibrator and several connecting rods, the first conical vibrator is connected to the second conical vibrator through the connecting rod, and the second conical vibrator is connected to the first conical vibrator through the connecting rod The first conical vibrator and the second conical vibrator are coaxially arranged in such a way that the cone tips are opposite; the first conical vibrator and the first conical vibrator are located on the same side of the antenna feed point, and the second conical vibrator And the second frustum-shaped dipole is located on the other side of the antenna feed point. Compared with the traditional biconical antenna, the invention has a wider operating frequency band, an impedance bandwidth of less than 2.3 with a standing wave ratio of more than four octaves, and an omnidirectional pattern on the horizontal plane. At the same time, the antenna is smaller in size and easy to carry.

Description

technical field [0001] The invention relates to the technical field of wireless communication and antennas, in particular to a VHF-UHF band broadband omnidirectional receiving antenna. Background technique [0002] The advancement of science and technology has promoted the broadbandization and miniaturization of radio equipment. As the front-end component of wireless equipment, the antenna's size and working bandwidth have an important impact on the miniaturization degree and broadband performance of the equipment. On the one hand, the broadbandization of equipment requires the system to have stable working performance in a wider frequency band. For broadband wireless devices, if a narrowband antenna is used to send and receive electromagnetic signals, it is necessary to install multiple antennas on the same device to meet the working needs of the device, which will greatly increase the complexity and space occupation of the device. It will bring problems such as electromag...

AI Technical Summary

Problems solved by technology

Traditional broadband antennas, such as logarithmic periodic dipole arrays, Vivaldi antennas, etc., have a large operating bandwidth, but the beam is single-pointing, and the pattern in the azimuth plane is not omnidirectional, which does not meet the requirements of receiving electromagnetic signals in all directions. need

Although traditional biconical antennas, dipole antennas and other antennas have omnidirectional patterns in the azimuth plane, their bandwidth is not wide enough to meet the needs of broadband applications.

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