A Three-band Common Aperture Antenna Based on Structure Multiplexing

Abstract

The invention belongs to the technical field of common-aperture antennas, and provides a three-frequency common-aperture antenna based on structural multiplexing, which is used to solve the problem of zero radiation aperture utilization caused by separation of radiation units in three-frequency common-aperture antennas based on wireless technology applications. Gig frequency band antennas have high gain and narrow beam coverage, and Wi-Fi frequency bands are not combined with MIMO technology. The present invention utilizes the closeness of the substrate integrated waveguide structure and the characteristics of less disturbance to the electric field of the PIFA antenna, and integrates the SIW leaky wave antenna structure in the Wi-Gig frequency band and the dual-frequency PIFA antenna radiation unit in the Wi-Fi frequency band, Achieve extremely high radiator utilization; finally, combine the Wi-Fi frequency band antenna with MIMO technology, and use a tri-band antenna unit with multiple radiators, which greatly improves the channel capacity of the system, enabling the antenna in this frequency band to independently , working at the same time, and multiple high-frequency units further expand the coverage of the Wi‑Gig band antenna beam.

Description

technical field [0001] The invention belongs to the technical field of common-aperture antennas, and relates to a common-aperture antenna applied to Wi-Fi technology, Wi-Gig technology and MIMO technology, in particular to a three-frequency common-aperture antenna based on structural multiplexing. Background technique [0002] In traditional wireless local area networks, Wi-Fi technology is widely used in long-distance communication, and its working frequency bands are 2.4GHz and 5GHz. Combining it with MIMO technology can greatly improve the channel capacity of the system; in order to further obtain higher data Communication speed, Wi-Gig technology working in V-band has become the next generation communication tool. Therefore, the combination of Wi-Fi frequency band dual-band MIMO technology and Wi-Gig technology is the development trend of wireless technology in the future, and a corresponding triple-band common-aperture antenna that can work under these technologies at t...

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Problems solved by technology

For example, in the document "D.Wang and C.H.Chan, "Multiband Antenna for Wi-Fi and Wi-Gig Communications", IEEE Antennas WirelessPropag. Lett., vol.15, pp.309-312, 2016", Wi-Fi and The Wi-Gig frequency band adopts the form of a printed monopole antenna and a high-order mode patch antenna respectively, and the radiation unit is placed separately, and the aperture utilization of the radiation unit is zero; and the antenna gain of the Wi-Gig frequency band is low, which is difficult to achieve work with longer range; moreover, the Wi-Fi bands in this document are not designed for MIMO applications to increase channel capacity

[0004] Another example is the literature "L. Zhang, K. Y. See, B. Zhang and Y. P. Zhang, "Integration of dual-band monopole and microstrip grid array for single-chip tri-band application", IEEE Trans. Antennas Propag., vol.61, no.1, pp.439-443, January 2013", the Wi-Fi and Wi-Gig frequency bands adopt the form of a monopole antenna and a microstrip grid antenna respectively, and the radiating unit is also placed separately, and the aperture utilization of the radiating unit is zero; the Wi-Gig frequency band antenna adopts the method of forming an array to achieve high gain, but the beam width is too narrow, which is not conducive to large-scale beam coverage; in addition, the Wi-Fi frequency band in this document is not combined with MIMO application design to improve channel capacity

[0005] It can be found that the existing solutions generally place the radiation units of different frequency band antennas separately, and the aperture utilization rate of the radiation units is zero; the Wi-Gig frequency band antennas can achieve high gain by forming an array, but the beam coverage is reduced; The simultaneous combination of Wi-Fi technology and MIMO applications cannot meet the development needs of future wireless technologies

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