Dual-Polarized Patch Antenna Array for High-Frequency Module EIRP
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing high-frequency modules suffer from low EIRP and inadequate isolation between antennas, particularly in configurations with dual-polarized antennas, where one antenna cannot be used for both transmission and reception, and there is a lack of effective isolation in phased array antennas with multiple RF terminals and phase shifters.
Innovation Solution
A high-frequency module incorporating a multilayer dielectric substrate with RFICs that include switching devices and variable phase shifters, allowing dual-polarized antennas to operate simultaneously for both transmission and reception, with specific feed point connections and orientations to enhance EIRP and isolation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If separate planar antennas are used for transmission and reception, then isolation between transmission and reception is improved, but only half of the planar antennas can be used during transmission or reception, resulting in low antenna gain and low EIRP
Solution Approach 1:
Each planar antenna is designed to function as both a transmission antenna and a reception antenna. The antenna structure includes feed points for both horizontal and vertical polarizations, allowing each antenna element to handle both transmit and receive operations, eliminating the need for separate dedicated transmit and receive antennas.
Solution Approach 2:
The patent introduces polarization diversity as an additional dimension for signal separation. By utilizing orthogonal polarizations (horizontal and vertical) at each antenna feed point, the system achieves isolation between transmission and reception paths without requiring physical separation of antenna elements, thereby maintaining high antenna gain and EIRP.
2Object-generated harmful factors
If tournament chart-like wiring is used to improve isolation at feed points, then isolation at specific feed points is improved, but isolation cannot be ensured in the configuration of a phased array antenna including multiple RF terminals and phase shifters
Solution Approach 1:
The patent divides the antenna system into multiple independent planar antenna elements, each with its own feed points for horizontal and vertical polarizations. This segmentation allows each element to be independently controlled by RF terminals and phase shifters, enabling phased array functionality while maintaining isolation through the modular structure.
Solution Approach 2:
Each planar antenna element is designed with specific local characteristics, including dedicated feed points for different polarizations and optimized ground structures. This local quality optimization ensures that isolation is maintained at each individual feed point while the overall system supports phased array operations with multiple RF terminals.
Data Source
AI summary
A high-frequency module (1) includes a multilayer dielectric substrate (2), an RFIC (21), and an array antenna (13). The array antenna (13) includes a plurality of first patch antennas (11) having identical polarization directions with each other, and a plurality of second patch antennas (12) having identical polarization directions with each other, which are polarization directions positioned between two orthogonal polarizations of the first patch antenna (11). The first patch antenna (11) and the second patch antenna (12) simultaneously operate as a transmitting antenna or a receiving antenna.