Microstrip Antenna Structure with Integrated Feed for Lower Profile
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Solution Overview
Problem
Conventional microstrip antennas require a separate feed circuit as a physical structure, increasing thickness and complicating integration with other communication hardware units.
Innovation Solution
The antenna feed assembly and radiation assembly are integrated on the same layer of physical structure, with the radiation patch partially overlapping the coupling patch and the feed assembly distributed outside the projection area, allowing signal coupling and transmission while reducing overall height and space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a separate feed circuit is designed as a physical structure, then the antenna can function properly, but the overall antenna thickness increases and integration with other communication hardware becomes more difficult
Solution Approach 1:
The patent merges the feed circuit and radiation assembly into a single integrated structure where the feed circuit is formed on the same substrate as the radiation elements. The feed lines and matching circuits are traces patterned on the substrate, eliminating the need for separate feed circuit boards or assemblies, thus reducing overall thickness while maintaining proper antenna function.
Solution Approach 2:
The substrate serves multiple functions simultaneously: it acts as the mechanical support structure, the electrical feed circuit board, and the mounting platform for the radiation elements. This multi-functionality eliminates the need for separate dedicated feed circuit structures, thereby reducing overall antenna thickness and improving integration capability.
2Reliability
If a separate feed circuit is designed as a physical structure, then the antenna can function properly, but the design complexity of the communication system increases
Solution Approach 1:
The feed circuit and radiation assembly are merged into a single integrated unit with unified design and manufacturing processes. The feed lines, matching circuits, and radiation elements are all fabricated on the same substrate using consistent manufacturing steps, significantly reducing design complexity and facilitating integration with other communication hardware.
3Ease of manufacture
If the antenna structure uses conventional separate layers, then each component can be optimized independently, but the overall space occupation increases
Solution Approach 1:
The patent transitions from a conventional layered three-dimensional structure to a planar two-dimensional integrated structure. All feed circuits and radiation elements are arranged on the same substrate plane, utilizing the surface area efficiently rather than stacking layers vertically, thus reducing overall space occupation while maintaining independent optimization capability through careful layout design.
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 integration reduces the antenna's overall height, minimizes space occupation, and facilitates its use by enabling efficient signal coupling and transmission without interference.
Implementation Method 1
the radiation patch has on the second dielectric plate a patch projection area that at least partially overlaps with the coupling patch
Data Source
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AI summary
The present disclosure provides a microstrip antenna structure and a communication device, which relate to the technical field of microwave communications. In the present disclosure, an antenna feed assembly and a coupling patch in an antenna radiation assembly are mutually communicatively provided on a side surface of a second dielectric plate, and an antenna ground is provided on the other side surface of the second dielectric plate; then, a radiation patch in the antenna radiation assembly is provided on a side surface of a first dielectric plate, and the other side surface of the first dielectric plate is laminated over the second dielectric plate and spaced by the coupling patch and the antenna feed assembly; the radiation patch has on the second dielectric plate a patch projection area that at least partially overlaps with the coupling patch, and the antenna feed assembly is distributed outside of the patch projection area of the radiation patch. Therefore, while the communication function of the antenna structure is realized, the feed assembly and the antenna radiation assembly are integrally arranged on a same layer of physical structure, which decreases the overall height of the antenna structure, reduces the space occupied thereby, and facilitates its use.