Vertical polarization arraying antenna for emission system of terrestrial digital television

Abstract

The invention discloses a vertical polarization arraying antenna for an emission system of a terrestrial digital television, which comprises a laminated flat radiating unit, a vertical polarization antenna array, an asymmetric broadband inverse feeder network, an impedance regulator, an input connector and fixing screws, wherein the laminated flat radiating unit, from top to bottom, comprises an upper plate, a lower pate and a ground plate; the vertical polarization antenna array is constructed by levelly and inversely arranging two laminated flat radiating units; the asymmetric broadband inverse feeder network is arranged between the lower plate and ground plate of the laminated flat radiating unit; one end of the impedance regulator is connected to the asymmetric broadband inverse feeder network while the other end is connected to the lower plate; an external conductor of the input connector is fixed on the ground plate, and an internal conductor penetrates through the ground plate to connect to the asymmetric broadband inverse feeder network. The antenna provided by the invention has the advantages of wide working band, small input standing-wave ratio (SWR), low cost and small size and the like characteristics; and the antenna is suitable for the application of the emission system of the terrestrial digital television in decimetric wave band.

Description

technical field [0001] The invention relates to a vertically polarized array antenna for a terrestrial digital television transmission system, in particular to a vertically polarized array antenna for a terrestrial digital television transmission system in the decimeter wave band. Background technique [0002] The antenna and its feeding equipment are the important links between receiving and transmitting equipment and space radio waves, and are important devices for converting the power of the transmitter into electromagnetic waves and propagating them to distant places. To build an ideal small TV switch, in addition to having a high-quality TV switch, there must also be a good transmitting and receiving antenna. Using high-quality antennas can effectively use the power of the transmitter and reduce the requirements on the receiver. With the continuous acceleration of global TV digitization and mobilization, digital TV in my country has developed rapidly in recent years, a...

AI Technical Summary

Problems solved by technology

However, the main obstacle in many applications is the limited bandwidth and low power of the panel antenna. The bandwidth of a typical panel antenna with a VSWR of less than 1.1 is only a few tenths of a percent, and the feed network is basically composed of Composed of microstrip power splitters, so the withstand power is small

For this reason, flat panel antennas have not been used in broadcast television transmission systems

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