Multi-band array antenna compact in structure
A technology with a compact structure and an array antenna, applied in the field of communication, can solve problems such as difficulty in meeting 700MHz LTE application requirements, difficulty in expanding the 700MHz frequency band, and large windward area of dual-band antennas, so as to reduce operation and maintenance costs, reduce the number of antennas, and have a compact structure Effect
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Embodiment 1
[0032] like Figure 2 to Figure 4 As shown, a compact 3-band array antenna provided by the embodiment of the present invention includes a metal reflector, and a low-frequency radiation unit 1 working in a lower frequency band and a high-frequency radiation unit 1 working in a higher frequency band installed on the metal reflector. Frequency Radiation Unit 2. Preferably, the low-frequency radiation unit 1 works in the frequency range of 698-960 MHz, and the high-frequency radiation unit 2 works in the frequency range of 1710-2690 MHz.
[0033] The low-frequency radiation unit 1 includes horizontal oscillators 101 and vertical oscillators 102 that are orthogonal to each other, and the horizontal oscillators 101 and vertical oscillators 102 are connected to the feed network to generate ±45-degree polarization or vertical and horizontal polarization far-field radiation directions picture. A plurality of low-frequency radiation units 1 are arranged at equal intervals along the fi...
Embodiment 2
[0044] like Figure 5 As shown, the embodiment of the present invention is changed on the basis of the first embodiment, and a 5-band array antenna is provided. Specifically, the multiple high-frequency radiation units 2 in each high-frequency array in the embodiment of the present invention belong to two mutually independent high-frequency systems. In other words, there are four mutually independent high-frequency systems in the embodiment of the present invention, which are respectively Figure 5 The part selected by the four rectangular frames in , together with another low-frequency system, constitutes a 5-band array antenna in which one low-frequency system and four high-frequency systems coexist.
[0045] Other features in this embodiment of the present invention are the same as those in Embodiment 1, so they will not be repeated here.
Embodiment 3
[0047] like Image 6 As shown, the embodiment of the present invention provides a 4-band antenna including a TD intelligent system. Among them, the four high-frequency arrays selected in the figure are TD intelligent systems that work in the 1880-2690MHz frequency band and cover the working frequency bands of TD-SCDMA and TD-LTE, that is, the four high-frequency arrays belong to the same high-frequency system . The two high-frequency arrays located on both sides of the TD intelligent system belong to two independent high-frequency systems and work in the 1710-2690MHz frequency band; the low-frequency array in the center of the entire array antenna belongs to the 698-960MHz frequency band low frequency system.
[0048] Other features in this embodiment of the present invention are the same as those in Embodiment 1, so they will not be repeated here.
[0049] It should be pointed out that in the three embodiments provided above, the number of high-frequency radiation units an...
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