A diamond-shaped array digital television antenna and its manufacturing method

Abstract

The invention provides a diamond array digital television antenna and a manufacturing method thereof. Branch center frequency points of a digital television frequency spectrum are set, and antenna oscillators are designed in a frequency band mode: frequency points of one diamond antenna cover 50-MHz bandwidth, and n branch center frequency points designed reasonably cover 100-MHz bandwidth. The diamond array digital television antenna comprises an upright perpendicular to the ground, diamond antenna oscillator sets are arranged on the upper portion of the upright, oscillator connecting sleeves are arranged among the antenna oscillator sets, and the antenna oscillator sets are connected through matching connection lines. The diamond array digital television antenna and the manufacturing method thereof have the advantages that the main lode width of each antenna is increased, multi-path reflection branch links compensate an information source main link, interchange of vertical polarization and horizontal polarization is simple, digital television signal superposition can become possible, attenuation in a concrete building of a reinforced concrete structure can meet use demands, the whole structural design is the array antenna formed by four folded dipoles in a superposition mode, and vehicle-mounted mobile digital television system design can be simplified.

Description

technical field [0001] The invention relates to an outdoor TV antenna, which belongs to a vertical polarization / horizontal polarization dual platform for wireless reception, a digital TV antenna with a bandwidth of 50M to 100M, namely a rhombic array digital TV antenna and a manufacturing method thereof. Background technique [0002] The bandwidth covered by the current digital TV antenna is difficult to exceed 50MHz. The Yagi antenna is in the high-end UHF frequency band. The higher the length of the antenna element is, the shorter the length is. Adding the number of elements can increase the gain but narrow the frequency band of the antenna. Although the peak value of the received signal on the main link as a directional antenna has increased, the wind resistance of the antenna has decreased due to the narrowing of the main lobe width, which is prone to "mosaic" phenomenon. Therefore, the high-end application of the Yagi antenna in the UHF frequency band is subject to cert...

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Problems solved by technology

[0002] The bandwidth covered by the current digital TV antenna is difficult to exceed 50MHz. The Yagi antenna is in the high-end UHF frequency band. The higher the length of the antenna element is, the shorter the length is. Adding the number of elements can increase the gain but the frequency band of the antenna becomes narrower.

Although the peak value of the received signal on the main link as a directional antenna has increased, the wind resistance of the antenna has decreased due to the narrowing of the main lobe width, which is prone to "mosaic" phenomenon

Therefore, the high-end application of Yagi antennas in the UHF frequency band is subject to certain restrictions

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