Phase shifter, phase shift network and electrically-controlled antenna

Abstract

The invention is suitable for the field of antennae, and provides a phase shifter, a phase shift network and an electrically-controlled antenna. The phase shifter comprises a fixed unit, a guide unit and a sliding unit, wherein the fixed unit comprises a fixed plate and two microstrip lines fixed on the fixed plate; and the sliding unit comprises a T-shaped sliding lead which is fixed together with the guide unit, and the top end and the tail end of the T-shaped sliding lead are respectively in contact with the two microstrip lines correspondingly in a sliding manner. The phase shifter, the phase shift network and the electrically-controlled antenna provided by the invention can ensure larger phase shift quantity on the premise of low standing-wave ratio, small insertion loss and better phase linear change characteristic in a phase shift process; and the phase shifter has better frequency characteristic and large bandwidth.

Description

technical field [0001] The invention belongs to the field of antennas, and in particular relates to a phase shifter, a phase shifting network and an electric adjustable antenna. Background technique [0002] In mobile communication, the electrically adjustable antenna has been used more and more because of its convenient angle adjustment. Especially at present, urban buildings are getting higher and higher, and the traffic volume is increasing, so the demand for large downtilt electronically adjustable antennas is also increasing. [0003] The working principle of the electric adjustable antenna is to change the relative phase of the input signal of the radiating unit by electrical means, so as to realize the adjustment of the downtilt angle of the beam. The phase shifter that changes the relative phase of the input signal of the radiating unit becomes the core component of the electric adjustable antenna. [0004] In the prior art, common phase shifters cannot achieve a r...

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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a phase shifter, aiming at solving the premise that the common phase shifter in the prior art cannot guarantee low standing wave ratio, small insertion loss, and good phase linear change characteristics during the phase shifting process The problem of achieving a large amount of phase shift under the

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