Multi-band antenna free of lumped parameter element for high-screen ratio mobile terminal
A multi-band antenna, lumped parameter technology, applied in the directions of antennas, electrical components, antenna grounding devices, etc., can solve problems such as loss, and achieve the effect of simple antenna structure, wide coverage frequency band, and small non-floor size
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[0035] The present invention proposes a mobile terminal WWAN / LTE antenna capable of covering multiple frequency bands without using lumped parameter elements and under the condition of small non-floor height. Its front view is as follows figure 1 shown. It can be seen from the figure that the antenna proposed by the present invention is mainly composed of four parts: the antenna main body, the dielectric board, the microstrip feeder, and the metal floor. The main part of the antenna is printed on the dielectric board, and part of it is folded to form a three-dimensional folded structure in space.
[0036] The material used for the dielectric plate is FR4, and the loss tangent is 0.02. The metal floor printed on the front of the dielectric board is connected to the main body of the antenna, which approximately replaces the screen and circuit components of the mobile terminal device, and also plays a role in radiating and guiding electromagnetic waves.
[0037] The main body of...
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