A kind of digital TV transmitting antenna based on e-type patch

Abstract

The invention relates to a digital television transmitting antenna based on an E-shaped patch. The digital television transmitting antenna comprises a formation plate, the E-shaped patch, a rectangular parasitic patch, an input connector and a retaining screw, wherein the rectangular parasitic patch, the E-shaped patch and the formation plate are orderly arranged in parallel from top to bottom to form a main structure of a stacked antenna; the E-shaped patch is provided with two symmetric rectangular gaps, and the length of a middle wing is smaller than that of two sides; an outer conductor of the input connector is fixed on the formation plate, and an inner conductor of the input connector penetrates through the formation plate and is connected to the E-shaped patch to feed; the rectangular parasitic patch at the upper layer is coupled by the E-shaped patch to feed. The digital television transmitting antenna based on the E-shaped patch provided by the invention satisfies the use requirement of a terrestrial television broadcasting transmitting system by adopting a multi-resonator technology to improve the impedance bandwidth and power handling of antennas; the invention has the characteristics of being wide in working band, high in gain, small in input standing-wave ratio, high in power handling, simple in processing, convenient in debugging and the like, and is applicable to a terrestrial television transmitting antenna system of a decimeter wave band.

Description

technical field [0001] The invention relates to the technical field of digital TV transmitting antennas, in particular to an E-shaped patch vertically polarized antenna applied to a terrestrial TV transmitting system in the decimeter wave band. Background technique [0002] The antenna and its feeding equipment are important devices for converting the power of the transmitter into electromagnetic waves and propagating them to a long distance. They are also an important link in the connection between receiving and transmitting equipment and space radio waves. Use a high-quality antenna to build an ideal small TV switch. In addition to the high-quality TV switch, a good transmitting and receiving antenna is also very important. It can effectively use the power of the transmitter and reduce the impact on the receiver. requirements. With the continuous acceleration of global TV digitization and mobilization, my country's digital TV has developed rapidly in recent years, and man...

AI Technical Summary

Problems solved by technology

However, the main disadvantages of patch antennas are narrow bandwidth and low power consumption. The bandwidth of a typical patch antenna with a VSWR of less than 1.1 is only on the order of a few tenths of a percent, and the feed network is mostly composed of microstrip power splitters. composition, and therefore withstands a small power

Based on the above reasons, the patch antenna has not been applied in the radio and television transmission system

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