Multi-Band Antenna Layout With Parallel Resonators for Isolation
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Solution Overview
Problem
The characteristics of patch antennas in existing antenna devices are significantly influenced by the configuration of adjacent AM/FM antennas, leading to interference issues.
Innovation Solution
An antenna device comprising a case, a base forming an accommodation space, and multiple antennas, where one antenna operates in a 1.5 GHz frequency band and another antenna includes parallel resonators connected by external connecting portions to resonate in a different frequency band, thereby minimizing mutual influence on characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If multiple antennas are accommodated in close proximity, then space utilization is improved, but mutual interference between antennas increases
Solution Approach 1:
The second antenna is divided into multiple parallel resonators that are connected through external connecting portions. This segmentation allows each resonator to be independently positioned and configured, enabling better spatial distribution and reduced mutual interference with the first antenna while maintaining compact overall structure.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement by extending the antenna structure in multiple directions (upward, sideways) rather than simply increasing footprint area. The parallel resonators are arranged in different spatial dimensions and connected through external structures, achieving compact integration while maintaining adequate isolation between antenna elements.
2Adaptability or versatility
If antennas operate in different frequency bands, then functional versatility is improved, but frequency band isolation becomes more difficult
Solution Approach 1:
The second antenna is segmented into multiple parallel resonators that can be independently tuned to different frequency bands. Each resonator group can be optimized for specific frequency ranges (e.g., L-band, C-band), allowing broad frequency coverage while maintaining frequency isolation through proper resonator design and positioning.
Solution Approach 2:
Different portions of the antenna structure are designed with locally optimized characteristics - the parallel resonators have specific dimensions and configurations tailored for their designated frequency bands, while the external connecting portions are designed to minimize coupling between different frequency band operations.
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
This configuration effectively suppresses the interference between antennas, enhancing the performance and characteristics of both antennas by allowing them to operate independently with reduced mutual influence.
Implementation Method 1
a first element including a plurality of parallel resonators configured to resonate in the first frequency band
Data Source
AI summary
An antenna device comprising: a case; a base forming an accommodation space with the case; and a first antenna and a second antenna, the first and second antennas being accommodated in the accommodation space, wherein the first antenna operates with radio waves in a first frequency band, the second antenna including a first element including a plurality of parallel resonators configured to resonate in the first frequency band, and first connecting portions each configured to connect parallel resonators immediately adjacent to each other in the plurality of the parallel resonators, and a second element configured to be connected to the first element, and the second antenna operates with radio waves in a second frequency band different from the first frequency band.