Multi-band Antenna Structure with Same-face Feeding Points
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Solution Overview
Problem
Conventional multi-band antennas are bulky and costly due to multiple antennas being stacked or connected on different faces, making them difficult to install and increasing size and manufacturing costs.
Innovation Solution
A redesigned multi-band antenna structure with signal feeding points for both horizontally and vertically polarized antennas arranged on the same face, utilizing a substrate with interconnected metal wires, filters, and a cross-connect element to form a dual polarization array, reducing size and cost while maintaining multi-band operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple antennas are stacked or connected on different faces using conventional manufacturing methods, then multi-band operation capability is achieved, but volume and size increase
Solution Approach 1:
The patent combines multiple antennas (first and second antennas with different polarizations) onto a single substrate, arranging them on the same face rather than stacking them on different faces. This merging approach maintains multi-band operation capability while significantly reducing the overall antenna volume and size.
Solution Approach 2:
Instead of stacking antennas in the vertical dimension (multiple faces), the patent transitions to arranging antennas in the planar dimension (same face), utilizing the substrate surface area more efficiently. This dimensional change reduces volume while preserving functionality.
2Adaptability or versatility
If multiple antennas are stacked or connected on different faces, then multi-band operation is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
By merging multiple antennas onto a single substrate with signal feeding points on the same face, the patent simplifies the manufacturing process. This eliminates the need for complex stacking and inter-face connections, reducing manufacturing steps and costs while maintaining multi-band capability.
Solution Approach 2:
The substrate serves as a universal platform that can accommodate multiple antennas with different polarizations and frequency bands. This multi-functional design simplifies manufacturing by using a single substrate type for all antenna elements, rather than requiring multiple specialized components.
3Adaptability or versatility
If signal feeding points are arranged on different faces or locations, then multi-band operation is achieved, but installation difficulty increases
Solution Approach 1:
The patent merges the signal feeding points of multiple antennas onto the same face of the substrate. This consolidation allows for simpler installation and connection processes, as all feeding points are accessible from one side, eliminating the need for complex multi-face routing and connection procedures.
4Reliability
If multiple antennas are used for dual polarization array, then antenna gain is improved, but volume and size increase
Solution Approach 1:
The patent achieves dual polarization array functionality by arranging antennas in the planar dimension on the same substrate face, rather than stacking them in the vertical dimension. This approach maintains the antenna gain benefits of dual polarization while minimizing volume increase, as the antennas share the same spatial plane.
Data Source
AI summary
A substrate has a front face and a back face. A first antenna and a second antenna are arranged on the front face in interlaced manner such that a first signal feeding point of the first antenna and a second signal feeding point of the second antenna are arranged on the same face or the same location. A ground face is arranged on the back face of the substrate and opposite to the first antenna and the second antenna. A cross-connect element is fixed on the ground face and electrically connected to the second antenna. The first antenna and the second antenna become a dual polarization array antenna structure for providing multi-band operation when receiving or transmitting a signal flowing through a first metal wire or a second metal wire at a length of a half of a wavelength of the signal.