Adjustable multi-band antenna system
A multi-frequency antenna and adjustable technology, which is applied to antennas, antenna supports/installation devices, and devices that make antennas work in different frequency bands at the same time, which can solve the problems of small antenna space, small mobile phone antenna space, and complex antenna environment. , to achieve the effect of multiple frequency bands and wide bandwidth
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Embodiment 1
[0031] An adjustable multi-frequency antenna system suitable for mobile terminals with a metal frame structure. The antenna system includes a metal frame, a PCB board and an antenna part; the PCB board is a general printed circuit board (Printed circuit board).
[0032] Such as figure 1 As shown, the metal frame includes a first bottom frame 102, a first side frame 103, a second side frame 104, a top frame 105, a third side frame 106, a fourth side frame 107, and a second bottom frame 108; 102. The first side frame 103, the second side frame 104, the top frame 105, the third side frame 106, the fourth side frame 107 and the second bottom frame 108 are connected in sequence to form a first space; the first bottom frame 102 and A gap 109 is provided between the second bottom frame 108; the metal frame is wrapped around the mobile terminal; the first bottom frame 102 and the second bottom frame 108 correspond to the bottom of the mobile terminal. In this embodiment, taking a general...
Embodiment 2
[0053] Such as Image 6 As shown, the difference between this embodiment and Embodiment 1 is that the antenna part is not provided with the first high-frequency coupling arm 210. This embodiment 1 is suitable for the first bottom frame 102 and the first side frame 103. Frequency parasitic arm demand situation. The other technical features of this embodiment are the same as those of Embodiment 1, and will not be repeated here.
Embodiment 3
[0055] Such as Figure 7 As shown, the difference between this embodiment and Embodiment 1 is that the antenna part includes a second high-frequency coupling arm 212 and a second coupling location 211, which replaces the first high-frequency coupling arm 210 in Embodiment 1. The second high-frequency coupling arm 212 is arranged in the same plane as the feeder trace, and the second coupling point 211 is arranged in the PCB board; the second high-frequency coupling arm 212 is connected to the second coupling point 211 and is connected to The second low frequency branch 204 corresponds to it. The second high-frequency coupling arm 212 in this embodiment serves as a high-frequency parasitic arm for generating required high-frequency resonance. The other technical features of this embodiment are the same as those of Embodiment 1, and will not be repeated here.
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