Multi-Coplanar Slot Array Antenna for Flexible Directivity
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Solution Overview
Problem
Slot array antennas have limited directional freedom in directivity due to the use of a common coplanar waveguide to feed power to slots arranged in one direction, restricting their application in high-speed and high-capacity wireless communication systems.
Innovation Solution
A slot array antenna design incorporating multiple coplanar waveguides with branching points allows for independent directionality of each slot, enhancing the design freedom of directivity by aligning high-frequency current phases and optimizing slot positions and shapes for improved antenna gain and bandwidth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a common coplanar waveguide is used to feed power to multiple slots arranged in one direction, then the structure is simple, but the direction of directivity is limited
Solution Approach 1:
The patent divides the single coplanar waveguide into multiple separate coplanar waveguides, each independently feeding power to slots in different directions. This segmentation allows the antenna to achieve directivity in multiple directions while maintaining structural simplicity through the use of identical basic waveguide units.
Solution Approach 2:
The patent transitions from a one-dimensional arrangement of slots fed by a single waveguide to a two-dimensional or multi-directional arrangement fed by multiple waveguides. This dimensional expansion enables directivity control in multiple directions simultaneously, resolving the limitation of single-direction directivity.
2Adaptability or versatility
If multiple coplanar waveguides are used to improve directivity freedom, then the adaptability increases, but the device complexity increases
Solution Approach 1:
Each coplanar waveguide is designed with the same structure and can feed power to slots in different directions. This universal design allows the system to achieve multi-directional directivity freedom while avoiding the complexity of designing and optimizing each waveguide individually, as they can be replicated from a standard unit.
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
The design improves antenna gain and directivity, enabling effective transmission and reception of electromagnetic waves in high-frequency bands, such as 5G communication and on-vehicle radar systems, with enhanced directional control and increased productivity.
Implementation Method 1
a first coplanar waveguide formed in a conductor layer provided on one surface of the dielectric layer, and a second coplanar waveguide formed in the conductor layer... each of the first coplanar waveguide and the second coplanar waveguide includes a first end part connected to a point to which the power feeding unit is connected
Data Source
AI summary
A slot array antenna includes a dielectric layer, a power feeding unit, a first coplanar waveguide formed in a conductor layer provided on one surface of the dielectric layer, and a second coplanar waveguide formed in the conductor layer, wherein each of the first coplanar waveguide and the second coplanar waveguide includes a first end part connected to a point to which the power feeding unit is connected or situated in proximity and at least one second end part connected to at least one slot formed in the conductor layer.