The UHF slot TV transmitting antenna is a product that radiates electromagnetic signals in the UHF (frequency range: 470-862MHz) band. It is a wireless digital television signal and a wireless analog television transmitting antenna. Adopt infinite ideal metal surface slit to simplify design. The antenna is polarized horizontally.

The slot antenna is composed of a resonant cavity and a protective cover. The wide side of the rectangular resonant cavity has several slots. The number of slots determines the gain of the antenna. The distance between the two layers of slits in the axial direction is about one wavelength, and the length of each slit is also close to one wavelength. The theoretical calculation is based on one wavelength. The feeding of each slot is coupled by inductance or capacitance. The maximum gain of the antenna is obtained by adjusting the balance of the resonance amplitude of each slot.

The feeding system of the slot antenna is contained inside the antenna cavity, so the antenna has fewer feeding connectors, compact feeding, miniaturization, low feeding loss, and the feeding system is all sealed in the radome. Therefore, the antenna has Compact, strong tightness, high stability, etc.

2. Craft materials and technical characteristics

The antenna cavity is made of high-gloss clean aluminum plate; the outer conductor of the feeding system is copper-plated with nickel and the inner conductor is copper-plated with silver; the outer cover of the antenna is made of glass fiber material;

The antenna adopts multi-channel transmission technology, which has higher gain and more uniform horizontal plane radiation field pattern; long working distance, uniform field strength coverage, small standing wave ratio; high stability, small feed loss, and strong corrosion resistance.