Phase position adjusting device of base station antenna, and antenna

Abstract

The invention discloses a phase position adjusting device of a base station antenna, and the antenna. The phase position adjusting device comprises a fixed circuit board and a movable circuit board; the fixed circuit board is fixed to a base, and the movable circuit board and the fixed circuit board are connected through a rotary shaft; the physical path length of a microwave passage formed by thetwo boards is changed by rotating the movable circuit board, and thus phase positions of corresponding channels are changed; four or more pairs of discontinuous arcs which are distributed in the radial direction are arranged on the fixed circuit board, circuits where the two pairs of arcs close to the rotary shaft are located constitute the first-stage arc channel, and circuits where the other two pairs of arcs are located constitute the second-stage arc channel; and the outer sides of the two pairs of adjacent discontinuous arcs of the first-stage arc channel and the second-stage arc channelare connected to form a cascade circuit form. Cascade and multi-stage arc circuits are used simultaneously, under the situation that demands are met, a product is smaller, and the cost is lowered; and compared with a common product, in order to reach the same phase position change amount, the rotating angle required by the phase position adjusting device is smaller, and more flexibility is achieved.

Description

technical field [0001] The invention belongs to the field of mobile communication base station antennas, and relates to a phase continuous adjustment device and a base station antenna of a multi-channel radio frequency signal distribution network. Background technique [0002] The RF phase shifter can realize the RF phase adjustment of a channel by changing the electrical wavelength of a channel. There are generally two methods for changing the electrical wavelength of an RF channel. The first is to change the dielectric constant of the transmission medium in the radio frequency path to change the electrical wavelength of the path, thereby achieving a phase change. This method changes the insertion loss of the channel while changing the transmission phase of the channel. And due to the limited range of dielectric constants available in the industry, if you want to obtain a wide range of phase changes in the radio frequency channel, you need to use multi-level cascading, wh...

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Problems solved by technology

Also this method is limited by mechanical limitations such as rotation angle and cannot obtain a wide range of phase changes in the RF channel

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