Compact Multiband Antenna Layout With Integrated PCB Radiators
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Solution Overview
Problem
Conventional antenna devices face high structural and manufacturing complexities, requiring multiple parts and soldering joints, which increase installation effort and complexity, and struggle with interference-free communication across multiple frequency bands.
Innovation Solution
A compact antenna device with integrated radiators and baluns on a single printed circuit board, using planar structures and grounding capacitors to reduce parts and soldering joints, enabling interference-free communication across multiple frequency bands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radiators are integrated into one antenna device to service multiple frequency bands, then the antenna can operate across multiple frequency bands, but the structural complexity and manufacturing complexity increase significantly
Solution Approach 1:
The patent integrates multiple radiators (first radiator for first frequency band, second radiator for second frequency band) into a single antenna device with a unified structure. The radiators are combined on a common support structure with shared feeding mechanisms, eliminating the need for separate antenna devices for different frequency bands while maintaining manageable complexity through systematic integration.
Solution Approach 2:
The antenna device is designed as a universal structure that can operate across multiple frequency bands simultaneously. The first and second radiators are integrated into a single device that can service both frequency bands, making the antenna multi-functional and adaptable to different communication requirements without requiring separate specialized antennas.
2Adaptability or versatility
If multiple probes and coaxial cables are used to feed current to integrated radiators, then the antenna can support multiple frequency bands, but the number of parts and manufacturing complexity increase
Solution Approach 1:
The patent combines multiple feeding mechanisms into a unified feeding structure. Instead of using separate probes and coaxial cables for each radiator, the invention integrates the feeding paths, reducing the total number of discrete parts. The first and second radiators are fed through a coordinated feeding system that minimizes the number of connection points and simplifies the manufacturing process.
Solution Approach 2:
The patent extracts and eliminates unnecessary intermediate components from the feeding system. By directly integrating the radiators onto a common support structure with optimized feeding paths, the design removes the need for multiple separate probes and coaxial cable connections, thereby reducing assembly steps and manufacturing complexity while maintaining multi-frequency band capability.
3Adaptability or versatility
If more soldering joints are required to electrically couple contact points, then the antenna can support multiple frequency bands, but the installation effort and time increase
Solution Approach 1:
The patent merges multiple electrical connection points into a reduced number of integrated contact points. The first and second radiators are electrically coupled through a simplified connection system that requires fewer soldering joints compared to separate feeding mechanisms. This integration maintains multi-frequency band operation while significantly reducing installation time and effort.
Solution Approach 2:
The patent segments the antenna device into modular components that can be assembled with minimal soldering. The radiators and feeding structures are designed as integrated units that require fewer connection points, allowing for faster installation while maintaining the capability to operate across multiple frequency bands.
4Adaptability or versatility
If the antenna size is increased to accommodate multiple radiators, then the antenna can service multiple frequency bands, but the form factor and wind-load increase beyond installation site requirements
Solution Approach 1:
The patent employs a nested arrangement where the second radiator is positioned within or alongside the structure of the first radiator. This nesting strategy allows multiple radiators to occupy overlapping or adjacent spatial volumes, enabling multi-frequency band operation without proportionally increasing the overall antenna footprint or wind-load, thus meeting installation site constraints.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement to integrate multiple radiators efficiently. By arranging the first and second radiators in different spatial dimensions or orientations rather than simply extending the antenna in one direction, the design achieves multi-frequency band capability while maintaining a compact form factor that fits within installation site requirements.
Data Source
AI summary
An antenna device comprises a base plate, a first radiator, a first balun and a second radiator. The base plate has a substantially planar shape. The first radiator is configured to radiate a first electromagnetic signal in a first frequency band. The first balun extends along a first axis between the base plate and the first radiator. The first axis is oriented perpendicular to the base plate and the first radiator. The first balun is arranged in order to support the first radiator. The second radiator is configured to radiate a second electromagnetic signal in a second frequency band. The second radiator includes one or more planar structures extending along the first axis and arranged between the base plate and the first radiator. The first and second radiators operate in different frequency bands without any interference to form a compact multiband antenna device.