Parasitic Patch Antenna Extraction for Compact Wireless Modules
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Solution Overview
Problem
Microstrip patch antenna arrays face challenges in accommodating parasitic elements for higher frequency wireless signaling within spatial constraints, leading to increased assembly size and potential frequency detuning due to proximity of nearby structures.
Innovation Solution
Separating parasitic patches from the antenna module and incorporating them into a separate mechanical part, such as an external housing or antenna carrier, allows for desired spacing and reduces overall assembly size while maintaining performance by using a dielectric gap and conductive stubs for capacitive loading.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If parasitic patches are integrated within the self contained antenna assembly, then the assembly can support higher frequency signaling, but the overall package size increases and spacing requirements relative to nearby structures are not met
Solution Approach 1:
The patent extracts the parasitic patches from the self-contained antenna assembly and places them on a separate mechanical structure (such as the device housing). This separation allows the antenna assembly to be smaller while maintaining the necessary spacing between parasitic elements and nearby structures, thus resolving the contradiction between supporting higher frequency signaling and minimizing assembly size.
2Volume of moving object
If parasitic patches are placed close to exciter patches within the same assembly, then the assembly size is reduced, but frequency detuning occurs due to proximity to nearby structures
Solution Approach 1:
By extracting parasitic patches from the antenna assembly and placing them on a separate mechanical structure, the patent eliminates the frequency detuning problem caused by proximity to nearby structures. The separation ensures that parasitic elements are positioned at optimal distances from both exciter patches and surrounding structures, maintaining frequency response stability while allowing for a more compact antenna assembly.
3Reliability
If self contained antenna assemblies are used for higher frequencies, then wireless signaling capability is improved, but additional separation requirements extend beyond the physical package size
Solution Approach 1:
The patent extracts parasitic patches from the antenna assembly and integrates them into the device housing or other nearby mechanical structures. This approach allows the antenna assembly itself to be smaller and positioned closer to other components, while the parasitic elements on the housing provide the necessary electromagnetic functionality without requiring additional separation space beyond the physical package.
Solution Approach 2:
The patent makes the device housing or mechanical structure serve a dual function: providing structural support and housing the parasitic antenna elements. This multi-functionality eliminates the need for separate parasitic element structures, reducing the overall separation requirements while maintaining wireless signaling capability.
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 configuration reduces the overall size of the antenna assembly, minimizes frequency detuning, and enhances the frequency response by allowing for optimal spacing between exciter and parasitic patches, improving the antenna's ability to transmit and receive wireless signals effectively.
Implementation Method 1
using a dielectric gap and conductive stubs for capacitive loading
Implementation Method 2
using a dielectric gap and conductive stubs for capacitive loading
Implementation Method 3
The one or more parasitic patches can be positioned on a surface of the external housing... allowing for optimal spacing between exciter and parasitic patches, improving the antenna's ability to transmit and receive wireless signals effectively
Data Source
AI summary
The present application provides a parasitic patch antenna for radiating or receiving a wireless signal. The parasitic patch antenna includes an antenna module, which has one or more exciter patches, where each exciter patch is respectively coupled to a signal port of one of a transmitter, a receiver, or a transceiver, and has a ground structure. The parasitic patch antenna further includes a separate mechanical part independent of the antenna module. The separate mechanical part includes one or more parasitic patches organized and arranged separate from, and proximate to the one or more exciter patches of the antenna module.