Multi-band Antenna Resonating Element for Compact Wireless Devices
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Solution Overview
Problem
Electronic devices face challenges in incorporating compact wireless circuitry that maintains efficient performance across multiple frequency bands while minimizing space and avoiding interference with other components.
Innovation Solution
The design incorporates a multi-band antenna system within a portable electronic device, utilizing peripheral conductive housing structures to form antennas that concurrently cover cellular ultra-high bands, WLAN, and ultra-wideband communications bands without the need for tunable components, by leveraging resonating elements and return paths integrated into the device's housing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If compact antenna structures are used to reduce device size, then device form factor is improved, but antenna efficiency bandwidth deteriorates
Solution Approach 1:
The antenna structure is designed to perform multiple functions across different frequency bands. The resonating element can operate in fundamental mode for lower bands (e.g., 5G, WLAN) and harmonic mode for higher bands (e.g., UWB), allowing a single compact structure to provide multi-band coverage without sacrificing efficiency in any particular band
Solution Approach 2:
The patent utilizes parameter changes by exploiting different resonant modes of the same antenna structure. By designing the resonating element with specific dimensions and configurations, the antenna can transition between fundamental and harmonic modes to cover different frequency bands, effectively maintaining bandwidth efficiency in a compact form
2Adaptability or versatility
If multiple antennas are incorporated to cover multiple frequency bands, then communications capability is improved, but device complexity deteriorates
Solution Approach 1:
The antenna design enables a single structure to serve multiple communication functions by supporting resonance in different modes. The resonating element can simultaneously or selectively operate in fundamental mode for sub-6GHz bands and harmonic mode for millimeter-wave bands, eliminating the need for separate antennas for each frequency range
Solution Approach 2:
The patent merges multiple antenna functions into a single integrated structure. By combining the resonating element, ground structures, and feed arrangements into one unified design, the system achieves multi-band coverage without the complexity of multiple discrete antenna components
3Adaptability or versatility
If antenna structures are added to provide multi-band coverage, then wireless communications capability is improved, but interference with other components deteriorates
Solution Approach 1:
The antenna design incorporates localized ground structures and shielding arrangements that are optimized for each operating band. The ground structures are positioned and configured to provide appropriate electromagnetic isolation for different frequency bands, reducing interference with other device components while maintaining antenna 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
This solution allows for efficient wireless communication across multiple frequency bands with reduced space usage and interference, maintaining satisfactory antenna efficiency without the need for adjustable components.
Implementation Method 1
The antenna may have an antenna resonating element that overlaps a slot between the segment and the ground structures. The first antenna may transmit and receive non-UWB signals such as WLAN signals and cellular ultra-high band signals through the housing wall and the slot... The antenna may concurrently cover the cellular ultra-high band, the 5.0 GHz WLAN band, and the first and second UWB communications band with satisfactory antenna efficiency
Implementation Method 2
The first arm may convey antenna currents in a non-UWB communications band such as one or more cellular ultra-high bands. The antenna currents on the first arm may induce similar currents on a portion of the peripheral conductive housing structures and on a clip attached to the peripheral conductive housing structures. These currents may radiate in the cellular ultra-high band.
Data Source
AI summary
An electronic device may be provided with a housing and an antenna having a resonating element. The resonating element may have first and second arms extending from opposing sides of a feed. The first arm and a portion of the housing may radiate in a cellular ultra-high band. The first arm may have a fundamental mode that radiates in a first ultra-wideband (UWB) communications band at 6.5 GHz. The second arm may have a fundamental mode that radiates in a 5.0 GHz wireless local area network band. The first and second arms may have a harmonic mode that radiates in a second UWB communications band at 8.0 GHz. The antenna may convey radio-frequency signals in each of these communications bands without the need for adjusting components in the antenna to switch between the UWB communications bands.