Reconfigurable Multiband Antenna Aperture for Wideband Gain
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Solution Overview
Problem
UWB antennas suffer from low gain and efficiency in the operational frequency range, require long signal acquisition times, and are prone to interference, limiting their use in applications where minimal interference is critical.
Innovation Solution
A reconfigurable aperture-sharing antenna system with integrated planar inverted-F antennas, square patch antennas, and circular patch antennas on a single substrate, utilizing PIN and varactor diodes for frequency tuning across multiple bands, and a multilayer stacked configuration with horn-like tapered slot antennas for ultra-wideband operation up to 300 GHz.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single UWB antenna is used, then the device complexity is reduced, but the gain and efficiency in the operational frequency range deteriorate
Solution Approach 1:
The patent divides the UWB antenna system into multiple frequency-band-specific antennas (0.5-4 GHz, 4-10 GHz, 10-40 GHz) with different geometries (PIFA, square patch, circular patch). Each antenna is optimized for its specific band, resolving the contradiction by achieving high gain and efficiency in each band through specialized design rather than using a single compromised antenna.
Solution Approach 2:
The patent creates a multi-functional antenna system where a single integrated structure serves multiple frequency bands simultaneously. The aperture-in-aperture configuration allows different antenna types to coexist and operate across the entire UWB range (0.5-40 GHz), achieving both low complexity and high performance through universal design.
2Device complexity
If conventional UWB antennas are used, then the device simplicity is maintained, but the signal acquisition time increases
Solution Approach 1:
The patent incorporates reconfigurable elements (PIN diodes, varactor diodes, aperture tuners) that allow the antenna system to dynamically adjust its electrical characteristics. This dynamic tuning capability enables faster signal acquisition by optimizing the antenna response for different frequency bands and signal conditions, reducing the acquisition time compared to static conventional antennas.
3Device complexity
If conventional UWB antennas are used, then the device simplicity is maintained, but the interference probability increases
Solution Approach 1:
The patent assigns different geometric configurations and operational characteristics to antennas针对specific frequency bands (PIFA for 0.5-4 GHz, square patch for 4-10 GHz, circular patch for 10-40 GHz). This localized optimization reduces interference within each band by matching the antenna characteristics to the specific frequency requirements, minimizing harmful interactions between different frequency components.
4Productivity
If multiple antenna types are integrated, then the bandwidth is enhanced, but the device complexity increases
Solution Approach 1:
The patent implements an aperture-in-aperture configuration where smaller antenna structures are nested within larger ones. This nesting approach allows multiple antenna types to be integrated in a compact arrangement, achieving enhanced bandwidth coverage (0.5-40 GHz) while controlling the overall device complexity through space-efficient design.
Solution Approach 2:
The patent transitions from planar two-dimensional antenna designs to three-dimensional aperture-in-aperture structures. This dimensional change enables multiple antenna types to be integrated vertically and spatially, achieving broad bandwidth coverage while managing complexity through three-dimensional space utilization rather than simple planar expansion.
Data Source
AI summary
An extremely wideband reconfigurable antenna system is provided, including a plurality of planar inverted-F antennas, operating in a frequency range of 0.5 GHz to 4 GHz; a plurality of square patch antennas, operating in a frequency range of 4 GHz to 10 GHz; a plurality of circular patch antennas, operating in a frequency range of 10 GHz to 40 GHz; a plurality of multilayer stacked-up folded antennas, operating in a frequency range of 40 GHz to 110 GHz; a plurality of square patch antennas including a plurality of Jerusalem cross elements, operating in a frequency range of 110 GHz to 170 GHz; and a plurality of subarrays of horn-like tapered slot antennas, operating in a frequency range of 170 GHz to 300 GHz.