Broadband VHF Antenna Hook Connection Impedance Matching
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Solution Overview
Problem
The challenge in wireless devices is to maintain or improve antenna performance despite decreasing space and the need to operate over multiple frequency ranges, often requiring multiple antennas and effective impedance matching, which is complicated by the mechanical connection of radiating elements to printed circuit boards.
Innovation Solution
An antenna assembly with a circuit board and radiator connected via a conductive path, utilizing a hook and conductive extension to securely link the radiator to the circuit board, providing a robust mechanical and electrical connection for efficient broadband impedance matching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an impedance matching network is provided in the antenna assembly, then impedance matching performance is improved, but device complexity increases
Solution Approach 1:
The patent combines the impedance matching network and the circuit board into a single integrated structure. The circuit board serves dual purposes: as the mechanical support structure and as the substrate for the impedance matching circuit components, thereby reducing overall device complexity while maintaining impedance matching performance
Solution Approach 2:
The circuit board is designed to perform multiple functions simultaneously: it provides mechanical support for the antenna elements, serves as the mounting platform for impedance matching components, and acts as the electrical connection pathway between the radiator and the connector, thereby reducing the need for separate dedicated components
2Adaptability or versatility
If multiple antennas are used to cover multiple frequency ranges, then frequency coverage is improved, but device volume increases
Solution Approach 1:
The helical antenna is designed with adjustable winding parameters that allow a single antenna structure to operate across multiple frequency ranges. By varying the pitch, diameter, and number of windings, the same physical antenna can be tuned to different frequency bands, eliminating the need for multiple separate antennas
Solution Approach 2:
The patent utilizes parameter changes in the helical antenna structure (such as pitch, winding diameter, and turn density) to adjust the resonant frequency and impedance characteristics, enabling a single antenna to cover multiple frequency ranges by simply modifying its geometric parameters rather than using multiple antennas
3Reliability
If the radiator is securely connected to the circuit board, then mechanical reliability is improved, but manufacturing complexity increases
Solution Approach 1:
The electrical connection and mechanical support functions are merged into a single integrated circuit board design. The circuit board provides both the electrical pathway through conductive traces and the mechanical support through its rigid structure, eliminating the need for separate connection components and simplifying assembly
Data Source
AI summary
An antenna assembly having a radiating element and a circuit board is provided. The radiating element is coupled to the circuit board by a conductive extension and hook portion where the hook portion extends into and possibly through a bore on the circuit board.