Leaky-Wave Phased Array Antenna for mmWave Wireless Devices
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Solution Overview
Problem
Millimeter wave (mmWave) antennas in wireless communication devices face challenges with power efficiency and beamforming/beamscanning range due to increased communication frequency, and the adoption of metal structures for aesthetics degrades antenna performance by interacting with dielectric and metal structures.
Innovation Solution
The integration of a leaky-wave radiator with a conductive housing structure that includes openings for antenna elements, allowing for electromagnetic field radiation and enabling phased-array antenna configurations for wide beamforming and beamscanning, while maintaining compactness and power efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If communication frequency is increased to mmWave bands, then data transmission speed and bandwidth are improved, but propagation loss and noise factors increase
Solution Approach 1:
The patent combines the antenna element array with the conductive housing structure to form an integrated leaky-wave phased array antenna. The housing structure serves dual purposes as both mechanical enclosure and antenna radiation element, merging functions to improve overall system efficiency and reduce losses at mmWave frequencies
Solution Approach 2:
The patent employs composite structures combining conductive materials (housing) with dielectric materials (substrate) to create the leaky-wave antenna system. This composite approach enables optimized electromagnetic performance at mmWave frequencies while managing propagation losses through material selection and structural design
2Reliability
If antenna gain is boosted to achieve stable access, then communication stability is improved, but power efficiency deteriorates
Solution Approach 1:
The patent merges the antenna radiation function with the housing structure's natural conductive properties. By utilizing the housing itself as part of the antenna system, the design achieves stable communication access without requiring additional power-intensive signal boosting, thereby maintaining power efficiency
Solution Approach 2:
The housing structure serves itself dual purposes: as mechanical enclosure and as active antenna element. This self-service approach allows the structure to contribute to signal radiation and gain without requiring separate powered components, improving power efficiency while maintaining communication stability
3Reliability
If directivity is increased at higher frequency bands, then antenna gain is improved, but beamforming and beamscanning range are reduced
Solution Approach 1:
The patent implements a phased array configuration with controllable phase shifters that enable dynamic beamforming and beamscanning. This dynamic control allows the antenna to adjust beam direction and coverage range adaptively, maintaining wide operational range while achieving high directivity and gain at mmWave frequencies
Solution Approach 2:
The patent divides the antenna system into multiple independent antenna elements arranged in an array. This segmentation enables individual element control through phase shifters, allowing electronic beam steering and scanning across wide angles while maintaining high gain through constructive interference patterns
4Shape
If metal structure is adopted for housing, then aesthetic appearance is improved, but antenna performance is degraded due to interaction with dielectric and metal structures
Solution Approach 1:
The patent merges the housing structure with the antenna radiation system, transforming the previously harmful interaction between metal housing and antenna into a beneficial integrated leaky-wave structure. The conductive housing becomes an active antenna element, eliminating performance degradation while preserving aesthetic appearance
Solution Approach 2:
The patent converts the harmful electromagnetic interaction between the metal housing and antenna elements into a beneficial effect. By designing the housing as part of the leaky-wave antenna structure, the previously detrimental metal-dielectric interactions become useful for achieving wide beam coverage and stable radiation patterns
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 provides stable communication network access with enhanced beamforming and beamscanning capabilities, even in high-frequency bands, by harmoniously interacting with ambient metal and dielectric structures, thus improving antenna performance and reducing mechanical stress on the device.
Implementation Method 1
An electromagnetic field generated by the mmWave antenna may be radiated outside of the housing of the wireless communication device through the leaky-wave radiator
Data Source
AI summary
A wireless communication device including an antenna device is provided. The wireless a communication device includes a housing having a conductive structure, a millimeter wave (mmWave) antenna having a plurality of antenna elements, the mmWave antenna being disposed within the housing, and a leaky-wave radiator having at least one opening formed in the conductive structure of the housing. An electromagnetic field generated by the mmWave antenna may be radiated outside of the housing of the wireless communication device through the leaky-wave radiator. The wireless communication device and/or an electronic device may be diversified according to embodiments.