External Antenna Flexible Circuit Board Full Band
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Internal antennas in portable devices have poor reception, and external antennas typically operate only in a partial frequency band, limiting their applications.
Innovation Solution
An external antenna design featuring a coaxial conductor assembly, flexible circuit board, passive element, and support tube, forming an antenna loop with a capacitive and inductive element, allowing operation in a full frequency band and providing high sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an internal antenna is used in portable electronic devices, then the device structure is compact, but the reception performance is poor
Solution Approach 1:
A flexible circuit board is introduced as an intermediary carrier to mount the antenna components. The circuit board serves as a mediator between the antenna elements and the device housing, allowing the antenna to be positioned optimally for reception while maintaining device compactness through flexible routing and mounting arrangements.
2Reliability
If an external antenna is used to improve reception, then the reception performance improves, but the antenna can only operate in a partial frequency band range
Solution Approach 1:
The antenna system is segmented into multiple independent antenna elements, each designed to operate in specific frequency bands. By dividing the antenna into separate segments with different geometries and configurations, the system can cover a broader frequency range while maintaining high reception performance in each band.
Solution Approach 2:
The antenna design incorporates multi-functional elements that can operate across multiple frequency bands. The antenna structure is designed to support both sub-6GHz and millimeter-wave frequencies, allowing a single antenna system to perform multiple functions and cover the full frequency band range required for modern wireless communications.
3Reliability
If the flexible circuit board is wound around the support tube, then the antenna maintains performance when bent, but the manufacturing complexity increases
Solution Approach 1:
The flexible circuit board is pre-formed with the appropriate curvature and mounting positions before assembly. The antenna elements are pre-positioned and secured on the circuit board in the desired configuration, allowing the entire assembly to be wound around the support tube as a unit. This preliminary preparation simplifies the final assembly process while ensuring proper antenna performance in the bent configuration.
Data Source
AI summary
An external antenna is disclosed. The external antenna has a coaxial conductor assembly, a flexible circuit board, a passive element, and a support tube. The coaxial conductor assembly has a coaxial cable including an external conductor and an internal conductor insulated from the external conductor. The flexible circuit board is connected with the coaxial conductor assembly. The passive element is attached to the flexible circuit board and electrically connected to the external conductor and the internal conductor. The external conductor, the internal conductor, the flexible circuit board, and the passive element form an antenna loop. The flexible circuit board is wound around the support tube.