3D Multi-Band Phase Shifter Cavity for Compact Dual Polarization
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Solution Overview
Problem
Existing multi-band multi-mode antennas face challenges with complex stacked structures that occupy large space and are difficult to assemble, particularly in the internal thickness direction of the cavity, and existing phase shifters have issues with discontinuous connections between layers.
Innovation Solution
A multi-band multi-channel phase shifter with a metal cavity divided by a transverse rib into symmetric upper and lower hollow cavities, featuring integrated metal strip lines with combining and phase shifting sections, and dielectric blocks for relative displacement to generate phase shifting, forming a compact three-dimensional structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the cavity is arranged in a stacked or arrayed manner to implement dual-polarized antenna, then the antenna can support multiple bands and modes, but the structure becomes complex and occupies large space
Solution Approach 1:
The single cavity is segmented by a transverse rib into two independent hollow cavities that are symmetrically distributed, allowing each cavity to handle different polarization channels while maintaining a compact single-cavity overall structure
Solution Approach 2:
The patent transitions from a two-dimensional planar stacked structure to a three-dimensional configuration by introducing a transverse rib that divides the cavity into upper and lower hollow cavities, utilizing the thickness direction for functional separation
2Adaptability or versatility
If the cavity is arranged in a stacked or arrayed manner to implement dual-polarized antenna, then the antenna can support multiple bands and modes, but the structure occupies large space in internal thickness direction
Solution Approach 1:
The two hollow cavities are nested within a single cavity structure, with the transverse rib creating internal partitions that allow both cavities to coexist in the same overall cavity envelope, effectively reducing the external thickness dimension
3Ease of manufacture
If existing phase shifters use two-dimensional strip lines, then the structure is simple, but the connections between layers are discontinuous and manufacturing is difficult
Solution Approach 1:
The patent transforms the two-dimensional strip line configuration into a three-dimensional integrated metal strip line structure that spans across different layers continuously, eliminating connection discontinuities while improving manufacturability through integrated construction
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution reduces assembly complexity, saves space, and improves manufacturability by converting two-dimensional strip lines to three-dimensional transmission, while supporting multiple bands and dual-polarized antennas with reduced environmental pollution and weight.
Implementation Method 1
A pull rod assembly pulls the dielectric block, to generate relative displacement between the dielectric block and the phase shifting section, to generate phase shifting
Data Source
AI summary
The present invention discloses a multi-band multi-channel phase shifter and a multi-band dual-polarized antenna, including a metal cavity, where the metal cavity is internally provided with a transverse rib to be separated into two upper and lower hollow cavities that are independent, and two upper and lower side surfaces of the transverse rib are provided with separators toward the hollow cavities respectively; the separators include parallel walls that are parallelly arranged at intervals relative to the transverse rib, and a vertical wall is connected between the parallel wall and the transverse rib; and a metal strip line of an integrated structure is mounted in a single hollow cavity respectively, and the metal strip line includes a combining section and a phase shifting section that are parallel to each other.