Integrated Circular Array Antenna for Low-PIMD Miniaturization
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Solution Overview
Problem
Existing circular array antennas are not miniaturized and lack improved electrical performance, which affects their efficiency and productivity in manufacturing.
Innovation Solution
A circular array antenna design that integrates components like dipoles, baluns, power dividers, and phase shifters within a wiring structure, eliminating the need for separate cables and soldering, and includes a reflector and radome for enhanced performance and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional separate cable and soldering connections are used for antenna components, then assembly flexibility is maintained, but manufacturing productivity decreases and PIMD performance deteriorates
Solution Approach 1:
The patent integrates multiple separate components (dipoles, baluns, power dividers, phase shifters, and connection ports) into a single integrated wiring structure. This merging eliminates the need for separate cables and soldering connections, directly improving manufacturing productivity while reducing Passive Intermodulation Distortion (PIMD) through eliminated connection interfaces.
Solution Approach 2:
The integrated wiring structure performs multiple functions simultaneously: it serves as the dipole antenna element, the balun transformer, the power divider network, and the phase shifter mechanism. This multi-functionality reduces the overall number of components needed while maintaining all necessary antenna operations.
2Reliability
If multiple separate components are used for antenna elements, then functional flexibility is maintained, but manufacturing quality and PIMD performance deteriorate
Solution Approach 1:
By combining multiple functional components into a single integrated wiring structure, the patent eliminates numerous cable connections and soldering joints that are potential sources of PIMD. The integrated design reduces the number of interfaces where passive intermodulation can occur, thereby improving reliability.
3Volume of moving object
If traditional antenna designs are used, then structural simplicity is maintained, but miniaturization and electrical performance improvement are limited
Solution Approach 1:
The patent implements a nested structure where the balun, power divider, and phase shifter are embedded within the dipole structure itself. This nesting allows multiple functional elements to occupy the same spatial envelope, enabling miniaturization while maintaining precise electrical characteristics through integrated design.
Data Source
AI summary
Disclosed herein are circular antennas that are miniaturized and have improved electrical performance. As an example, disclosed herein is a circular array antenna used in a wireless communication system, comprising a plurality of column units arranged at a predetermined angle, each column unit comprising: a connection port formed at one end and configured to transmit or receive power or a signal; a wiring structure coupled to the connection port; and at least one pair of dipoles formed in the wiring structure and protruding toward the other end, wherein the dipoles are formed in the wiring structure through a pattern and are integrally formed.