Circular Polarized Antenna Array Layout for Compact Tx/Rx Isolation
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Solution Overview
Problem
Existing antenna array modules in low-orbit satellite systems are large due to separate arrangements of transmitting and receiving antennas, which is not suitable for mobile terminals.
Innovation Solution
A circular polarized antenna array module with alternately arranged transmitting and receiving antennas on a dielectric substrate, utilizing phase modifiers to adjust signal phases and minimize interference, reducing the overall area by 60% and enabling miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If transmitting antenna and receiving antenna are arranged in different areas, then interference between antennas is reduced, but overall area of the antenna array module becomes large
Solution Approach 1:
The patent merges transmitting antennas and receiving antennas into the same antenna array module, arranging them in an interleaved pattern where transmitting and receiving antennas alternate positions. This integration reduces the overall area while maintaining isolation through the alternating arrangement and shared substrate structure.
Solution Approach 2:
The patent transitions from a spatial separation approach (different areas) to a dimensional arrangement approach (alternating positions in a grid pattern). By organizing antennas in alternating transmit-receive sequences across multiple rows and columns on the same substrate, the design achieves both compactness and interference reduction.
2Device complexity
If transmitting antenna and receiving antenna are arranged in different areas, then complexity of antenna design is reduced, but overall area of the antenna array module becomes large
Solution Approach 1:
The patent employs a universal antenna element design where the same basic antenna structure serves both transmitting and receiving functions. By using identical or similar antenna elements for both purposes and arranging them in an alternating pattern, the design simplifies the overall system while achieving compact integration.
Solution Approach 2:
The patent utilizes parameter changes in the alternating arrangement pattern, where the position, phase, and activation state of antenna elements are dynamically adjusted. This allows the same physical structure to function as both transmitting and receiving elements, reducing design complexity while maintaining compact form factor.
Data Source
AI summary
A circular polarized antenna array module and a wireless communication device, including a plurality of circular polarized transmitting antennas and circular polarized receiving antennas, a dielectric substrate, and a plurality of first group of phase shifting units and second group of phase shifting units. In each row of the circular polarized transmitting/receiving antennas, every two adjacent circular polarized transmitting/receiving antennas arranged with a distance, each of the circular polarized transmitting antennas arranged with a first feed point and a second feed point, each of the circular polarized receiving antennas arranged with a third feed point and a fourth feed point. Each row of the circular polarized transmitting antennas and each row of the circular polarized receiving antennas alternately placed to form array arranged on the dielectric substrate. The first/second group of phase shifting units adjust phases of transmitting signals/return signals of the circular polarized transmitting/receiving antennas.