Dual-band serial feedback vibrator antenna array

Abstract

The invention relates to a dual-band cross-feeding vibration generator antenna array which is applicable to the technical field of wireless communication, comprising coaxial segments of basic frequency radiation, coaxial segments of double frequency radiation and end regulating coaxial segments; the feeding ports are taken as the beginning, the front end of the cross-feeding antenna array is the part of the coaxial segments of basic frequency radiation, behind which the part of the coaxial segments of double frequency radiation is connected, and at last the end regulating coaxial segments areconnected; the amount of coaxial segments of basic frequency radiation and coaxial segments of double frequency radiation is determined by the gains and direction coefficients demands of the design, wherein, the amount of the coaxial segments of double frequency radiation is an even number; the bandwidth can be adjusted by adjusting the length of end regulating coaxial segments; various coaxial segments are connected with each other in a way of cross-feeding and the inner and the outer conductors of the neighboring coaxial segments are cross connected; the inner and the outer conductors at the tail end of the end regulating coaxial segments are connected. The invention has compact structure and can generate dual-band antennas of different gain requirements by increasing and decreasing thetwo kinds of radiation coaxial segments, the bandwidth thereof is easy to control and the antenna has good omni-direction by adopting coaxial cross-feeding.

Description

technical field [0001] The invention relates to a dual-band serial-feed dipole antenna array, which is a small serial-feed array antenna array that can be used for mobile communication repeaters or small base stations. It belongs to the technical field of wireless communication. Background technique [0002] With the development of communication technology, various antenna arrays are widely used in wireless communication devices. The antenna array can obtain higher gain, wider bandwidth, and better directivity than a single antenna. The feeding method of the antenna array can be divided into series-fed antenna array and parallel-fed antenna array. Now the parallel-fed antenna array is mostly used, because its feeding method is simple and flexible, and easy to control, while the feed of the series-fed antenna array is generally relatively simple. , the feed point control of a single antenna on the antenna array is relatively strict. With the continuous improvement of peopl...

AI Technical Summary

Problems solved by technology

In "Antenna Principles and Design" written by Lin Changlu, a series-fed antenna array made of coaxial cables is proposed. The length of each coaxial cable is half the wavelength of the transmission frequency, and the inner and outer conductors of adjacent coaxial cables are cross-connected. It cannot realize the tuning of the transmission frequency and the double transmission frequency at the same time, and sometimes the bandwidth required by the two frequency bands is different (for example, the bandwidth of GSM900 is 80MHz, and the bandwidth of DCS1800MHz is 170MHz), so it is difficult to realize

There are also two antennas used to realize the tuning of two frequency bands, which has restrictions on the positions of the two antennas, the mutual interference between the antennas is serious, and it also increases the cost

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