Compact Multi-Band Patch Antenna Layout for GNSS and UWB Resonance
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Solution Overview
Problem
Existing patch antennas struggle to resonate across multiple frequency bands, particularly for high-precision positioning applications like GPS, GLONASS, SDARS, and UWB, without increasing size or complexity.
Innovation Solution
A multi-band patch antenna design with a base substrate, upper and lower patches, and spaced feeding and radiation patches, incorporating accommodation grooves to maintain separation and minimize size, allowing resonance across GPS, GLONASS, and UWB frequencies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional single-band patch antenna is used, then the structure is simple, but it cannot resonate across multiple frequency bands (GPS, GLONASS, SDARS, and UWB)
Solution Approach 1:
The patent implements multi-functionality by designing a single patch antenna structure that can resonate across multiple frequency bands (GPS L1, L2, L5, GLONASS, SDARS, and UWB). This is achieved through carefully designed feed networks and impedance matching structures that enable the same physical antenna to operate across diverse frequency ranges, eliminating the need for separate antennas for each band.
Solution Approach 2:
The patent employs nesting by integrating multiple functional elements within a compact antenna structure. The feed network, impedance matching components, and radiation elements are nested together in a hierarchical arrangement where smaller functional units are embedded within the larger antenna structure, allowing multi-band operation without proportionally increasing overall size.
2Adaptability or versatility
If additional radiation patches are added to support UWB frequency, then multi-band resonance is achieved, but the antenna size increases
Solution Approach 1:
The patent transitions from planar two-dimensional patch arrangements to three-dimensional structures by utilizing vertical spacing between patches and incorporating feed networks that extend in multiple dimensions. This dimensional transition allows the antenna to support UWB frequencies without proportionally increasing the footprint area, as the additional functionality is achieved through vertical rather than horizontal expansion.
Solution Approach 2:
The patent achieves UWB support by adjusting key parameters including patch dimensions, feed network impedance values, and spacing distances between elements. By optimizing these parameters, the antenna maintains compact dimensions while achieving the required broadband UWB resonance characteristics.
3Reliability
If feeding patch and radiation patches are spaced apart from upper patch, then resonance performance improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent incorporates preliminary action by pre-calculating and pre-positioning the feed networks and impedance matching structures during the design phase. The spacing and positioning of feeding patches and radiation elements are predetermined through simulation and analysis, allowing manufacturers to follow clear fabrication guidelines that reduce the actual manufacturing precision burden while maintaining optimal resonance performance.
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 integrates additional radiation patterns into a simple structure, enabling both indoor and outdoor positioning with minimal size increase, supporting multiple frequency bands including GPS, GLONASS, and UWB.
Implementation Method 1
a multi-band patch antenna which resonates to a frequency in a second bandwidth, as well as to a frequency in a first bandwidth that is a frequency bandwidth of GNSS
Data Source
AI summary
Provided is a multi-band patch antenna which has, on a base substrate, a feeding patch and radiation patches, which are formed apart from an upper patch, so as to resonate with a first frequency band and a second frequency band. The provided multi-band patch antenna comprises: a base substrate having an upper surface, a lower surface, and a plurality of sides; an upper patch disposed on the upper surface of the base substrate; a lower patch disposed on the lower surface of the base substrate; a feeding patch disposed on the upper surface and a first side of the base substrate and disposed to be apart from the upper patch; and a first radiation patch disposed on the upper surface and a second side of the base substrate and disposed to be apart from the upper patch and the feeding patch on the upper surface of the base substrate.