Array Antenna Module with Adjustable Element Factor

Abstract

The invention discloses an adjustable element factor array antenna module, which comprises a feed-in unit, a first element factor unit, a second element factor unit and a high-frequency common reflection part. The first element factor unit includes a first dual-frequency antenna and a first low-frequency reflection part, the first dual-frequency antenna is connected to the first feed-in branch of the feed-in unit, and the first low-frequency reflection part is connected to the first ground branch through the first diode Connect to ground. The second element factor unit includes a second dual-frequency antenna and a second low-frequency reflection part, the second dual-frequency antenna is connected to the second feed-in branch of the feed-in unit, and the second low-frequency reflection part is connected to the second ground branch through the second diode Connect to ground. The high-frequency common reflector is located between the first dual-frequency antenna and the second dual-frequency antenna, and has a third diode and a third ground branch, and the high-frequency common reflector is connected to the ground through the third diode and the third ground branch . Thereby, the radiation pattern can be controlled.

Description

technical field [0001] The invention relates to an array antenna module, in particular to an array antenna module with an adjustable element factor. Background technique [0002] The radiation pattern of the antenna varies according to the basic working principle of the antenna. Various radiation patterns have different applications. For example, the omnidirectional radiation pattern is suitable for the terminal device so that the terminal device can receive wireless signals from all directions. Signal. For another example, base station antennas, such as wireless access point antennas, may need to be able to generate a radiation pattern in a specific direction, so as to perform wireless communication with terminal devices located in various specific locations. [0003] Generally speaking, although an array antenna can be used to control a specific radiation pattern, the control circuit of the array antenna (including switches, phase control, and feeding network, etc.) intro...

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Problems solved by technology

If you want to use a design with multiple antennas (arrays), but also have multi-band operation at the same time, such as the operation requirements of the 2.4GHz frequency band and the 5GHz frequency band commonly used in wireless local area networks, choose the multi-band antenna used in the traditional array antenna design. In addition to considering the transmission loss in detail for each switch and multiple feed-in networks, it is also necessary to consider the impact characteristics of the impedance of the feed-in network stubs on different frequency bands when they are working at multiple frequencies (or dual frequencies), especially in current electronic devices. When the antenna is required to be light, thin and small, the circuit area of ​​the feed-in network that provides dual-band or higher operation is quite large (maybe larger than the antenna array, which makes it difficult to reduce the overall size of the antenna array module), which makes traditional use require complex feed-in networks. When accessing the network to achieve dual-frequency (or multi-frequency) operation, it will cause a substantial increase in the manufacturing cost of antenna array products

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