Planar Dual Antenna Unit for Proximity Communication
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Solution Overview
Problem
The existing designs of electronic apparatuses with multiple antennas for proximity communication face performance issues due to the increased distance between the antennas and the communication modules when arranged in layers, leading to potential degradation in antenna performance.
Innovation Solution
The implementation of a dual-antenna unit where a loop antenna and an electric field induction antenna are positioned in the same plane on separate boards within the housing, with the electric field induction antenna's element part integrated within the area surrounded by the loop antenna, allowing for proximity communication while maintaining a compact design and minimizing performance loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If two antennas for proximity communication are arranged in layers above and below, then the antenna mounting area is reduced, but the distance between the antenna contained in the housing on the inner side of the housing and the communication module becomes large, leading to potential degradation in antenna performance
Solution Approach 1:
The element part of the electric field induction antenna is positioned inside the area surrounded by the loop antenna, creating a nested configuration where one antenna structure is contained within the spatial footprint of the other. This nesting approach allows both antennas to coexist in a compact area while maintaining their respective radiation patterns and performance characteristics.
Solution Approach 2:
The invention transitions from a vertical layered arrangement to a planar co-located arrangement where both antennas operate in the same plane. The loop antenna and electric field induction antenna are positioned side-by-side or nested within the same horizontal plane, eliminating the vertical separation distance that degrades performance while maintaining compact footprint.
2Device complexity
If two antennas for proximity communication are arranged in layers above and below, then the device structure is simplified, but the distance between the antenna and communication module increases, reducing communication efficiency
Solution Approach 1:
The invention changes the spatial arrangement from vertical stacking to horizontal planar configuration. Both antennas are positioned in the same plane, reducing the distance to communication modules while maintaining structural simplicity through standardized board mounting and integrated circuit board designs.
3Adaptability or versatility
If multiple antennas are mounted on separate boards in layers, then the antenna types can be differentiated, but the overall housing size increases and antenna performance deteriorates
Solution Approach 1:
The invention merges the spatial footprints of multiple antenna types by positioning them in the same plane rather than stacking them vertically. The loop antenna and electric field induction antenna share the same housing plane, with one antenna's element positioned within or adjacent to the other's radiation area, thereby consolidating the overall housing footprint while maintaining distinct antenna functionalities.
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 enhances user convenience by enabling simultaneous communication in both electromagnetic induction and electric field induction systems without significant performance degradation, while reducing the antenna mounting area and maintaining antenna performance.
Implementation Method 1
a first antenna part comprising a loop antenna provided on the first board, and the first antenna part being configured to communicate with a communication module opposed to the loop antenna
Implementation Method 2
a second antenna part comprising an element part provided in an area surrounded by the loop antenna, and positioned in the same plane as the loop antenna
Data Source
AI summary
According to one embodiment, an electronic apparatus includes a housing, a first board contained in the housing, a second board contained in the housing on the inner side of the first board, a first antenna part, and a second antenna part. The first antenna part includes a loop antenna provided on the first board, and configured to communicate with a communication module opposed to the loop antenna. The second antenna part includes an element part provided in an area surrounded by the loop antenna, and positioned in the same plane as the loop antenna, and a ground part provided on the second board, and configured to communicate with a communication module opposed to the element part.