Compact Phased Array Antenna With Phase-Shift Element
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Solution Overview
Problem
Wireless communication systems face performance degradation when antennas are placed within enclosures due to interference from other components, leading to reduced antenna efficiency and gain.
Innovation Solution
The use of phased array antenna systems with multiple radiation elements and phase-shift elements, arranged to form desired beam patterns, which can be configured to resonate at specific frequencies and phases, allowing for increased gain and robustness within enclosures, and enabling antennas to be embedded in printed circuit board assemblies or on-board assemblies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an antenna is placed within an enclosure close to device components, then the antenna can be embedded in the device, but the antenna performance is greatly decreased
Solution Approach 1:
The antenna is divided into multiple radiating elements (first radiating element, second radiating element, third radiating element) arranged in a specific configuration within the enclosure. Each element contributes to the overall radiation pattern, allowing the antenna system to maintain performance despite spatial constraints and interference from other device components.
2Power
If multiple antenna elements are used to increase gain, then the antenna gain is improved, but the overall antenna length increases
Solution Approach 1:
The antenna elements are arranged in a three-dimensional configuration within the enclosure rather than extending linearly. The first, second, and third radiating elements are positioned at different locations and orientations, creating a compact phased array structure that achieves high gain through spatial distribution rather than increased length.
Solution Approach 2:
The multiple radiating elements are nested within the device enclosure, with each element strategically positioned to maximize radiation efficiency while minimizing the overall antenna structure footprint. The elements are integrated into the available space within the enclosure, achieving compact high-gain performance.
3Adaptability or versatility
If phase-shift elements are added to control beam patterns, then the directional control is improved, but the device complexity increases
Solution Approach 1:
The phase-shift functionality is combined with the radiating elements themselves rather than being implemented as separate external components. The patent describes a phased array antenna system where the phase control is integrated into the antenna structure, allowing beam pattern control while maintaining a compact and relatively simple overall design suitable for device integration.
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 enhances antenna performance by increasing gain and tolerance, allowing for directional radiation patterns while minimizing interference from enclosure components, thus improving the overall efficiency of wireless communication devices.
Implementation Method 1
a first radiation element that is made of a material and has a length selected to resonate at a desired frequency... the second radiation element is made of a material and has a length selected to resonate such that the first and second radiation elements cooperate to form a desired beam patter
Implementation Method 2
The phase-shift element shifts the phase of the radio signal approximately one-half a wavelength of the radio signal
Data Source
AI summary
A phased array antenna system includes a first radiation element that is made of a material and has a length selected to resonate at a desired frequency. A phase-shift element is coupled to one end of the first radiation element. A second radiation element is coupled to the end of the phase-shift element opposite the first radiation element, so that a radio signal passes through the first radiation element through the phase-shift element and through the second radiation element, the second radiation element is made of a material and has a length selected to resonate such that the first and second radiation elements cooperate to form a desired beam pattern from the antenna system.