Miniaturized Planar Antenna With Parasitic Element For Broadband Signal Reception
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional miniaturized antennas for portable electronic devices have narrow bandwidths, leading to poor electromagnetic signal transmission efficiency when receiving digital television signals.
Innovation Solution
A miniaturized planar antenna design that includes a metal parasitic element on the insulation plate, in addition to a metal radiator and grounding element, with meander line configurations to broaden the bandwidth and enhance signal transmission efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the antenna is miniaturized by combining a circuit board with a metal radiator in a meander line configuration, then the size of the antenna is reduced, but the bandwidth becomes narrow and signal transmission efficiency deteriorates
Solution Approach 1:
The antenna is divided into multiple functional segments: a metal radiator with meander line configuration for signal reception, a metal grounding element for grounding, and a metal parasitic element for bandwidth enhancement. Each segment is disposed on different surfaces of the insulation plate, allowing the antenna to maintain a compact form while achieving broader bandwidth and improved signal transmission efficiency through the coordinated operation of these segmented components
Solution Approach 2:
The antenna structure transitions from a two-dimensional planar configuration to a three-dimensional arrangement by disposing different metal elements on both the first and second surfaces of the insulation plate. The metal radiator, grounding element, and parasitic element are positioned at different spatial locations and orientations, utilizing the third dimension (z-axis) to achieve bandwidth broadening while maintaining a compact overall size
2Volume of moving object
If the antenna is miniaturized by combining a circuit board with a metal radiator, then the size is reduced, but the bandwidth of electromagnetic signal transmission becomes narrow
Solution Approach 1:
The metal parasitic element acts as an intermediary component that couples the metal radiator and the grounding element through electromagnetic interaction. This parasitic element, disposed on the second surface of the insulation plate corresponding to the metal radiator position, mediates the electromagnetic field distribution and enables bandwidth broadening without requiring direct electrical connection, thus maintaining the miniaturized structure while enhancing adaptability
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 antenna achieves a significantly broader bandwidth, approximately 250 MHz, compared to conventional antennas, resulting in improved signal transmission efficiency and size reduction.
Implementation Method 1
a metal radiator used for allowing the antenna to receive electromagnetic signals
Implementation Method 2
the metal radiator 22 includes a meander line portion 221... a bandwidth that the antenna receives electromagnetic signals can be broadened
Data Source
AI summary
A miniaturized planar antenna of digital television comprises an insulation plate a metal radiator combined with a first surface thereof, a metal grounding element connected to a second surface thereof and a metal parasitic element. The metal radiator has a meander line portion and the metal parasitic element also has a meander line portion and is corresponding to a position of the metal radiator; the transmission efficiency of digital television signals can be elevated by broadening an electromagnetic signal receiving bandwidth of the antenna by means of the metal parasitic element.