Coaxial medium phase shifting system, phase shifter and phase shifting drive device

Abstract

The invention discloses a coaxial medium phase shifter and related application thereof, and improves a phase shifter of a conventional mobile communication antenna. The phase shifter is used for adjusting the phase of signals flowing through the phase shifter and comprises an inner conductor and an outer conductor; the inner conductor defines at least two parallel conduction arms in an integrated-molding way; the outer conductor is provided with coaxial cavities for each of the conduction arms; the conduction arms are sleeved in the coaxial cavities; and medium elements which move along the axial direction of the coaxial cavities to change the phase of the signals are sleeved between the outer conductor and the conduction arms. The propagation rate of radio frequency signals passing through the phase shifter can be changed by the linear reciprocating movement of the medium elements along the axial direction, so that the phase of the signals is changed to fulfill the aim of phase shift. The coaxial medium phase shifter overcomes fixed thinking modes, changes the structure of a conventional coaxial phase shifter, realizes phase adjustment through the movement of the medium elements relative to the coaxial cavities, optimizes both the electrical and physical properties of the phase shifter, serves as a base element, and has an optimistic application prospect.

Description

technical field [0001] The present invention relates to the field of mobile communication antennas, in particular to a coaxial dielectric phase shifter used to change the signal phase, including a coaxial dielectric phase shifter, a coaxial dielectric composite phase shifter, etc. A coaxial medium phase shifting system composed of a phase shifter, and a phase shifting drive device for implementing a phase shifting operation on the phase shifter. Background technique [0002] In the coverage of mobile communication network, the electric adjustable base station antenna is one of the key equipment of the coverage network, and the phase shifter is the core component of the electric adjustable base station antenna. The performance of the phase shifter directly determines the performance of the electric adjustable antenna. This further affects the quality of network coverage, so the importance of phase shifters in the field of mobile base station antennas is self-evident. In the ...

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Problems solved by technology

[0007] One: Although the slit 388 can produce a certain degree of elasticity, in repeated use, it is difficult to ensure good contact between the fixed transmission line 397 or 398 and the movable transmission line 396, and this non-fastening between the two metals The connection method may spark under high power conditions, and it is also difficult to avoid passive intermodulation products caused by poor contact

[0008] Second: Phase shifting is achieved by directly moving the conductor of the transmission line, and this structure is difficult to achieve the stability of the circuit index in the field of mobile base station antennas. This defect is also applicable to the technical solution disclosed in the US2,502,359 patent

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