Conductive Polymer Composite Antenna for E-Book Digital TV
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Solution Overview
Problem
Conventional digital television antennas for e-books are either expensive due to metal materials or inconvenient with external connections, and they do not efficiently meet the size and transmission requirements for digital television signals.
Innovation Solution
A reverse helical beam antenna design featuring a radiator surrounded by a ground structure with low-band and high-band spiral portions, separated by a band separation portion, which reduces interference and allows for compact digital television signal transmission in electronic devices like e-books.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional metal materials are used for digital television antennas, then transmission performance is improved, but manufacturing cost increases
Solution Approach 1:
The patent changes the material parameter from conventional metal to conductive polymer composite material, achieving both cost reduction and maintained transmission performance through the unique electromagnetic properties of the composite material
Solution Approach 2:
The patent employs conductive polymer composite material that combines polymer base material with conductive fillers, creating a composite that offers both electrical conductivity for antenna function and cost advantages over pure metal materials
2Reliability
If externally connected digital television antennas are used, then transmission performance is improved, but ease of operation deteriorates due to connection inconvenience
Solution Approach 1:
The patent merges the antenna with the electronic device body by integrating the conductive polymer composite material directly into the device housing or panel, eliminating the need for external connections while maintaining transmission performance
Solution Approach 2:
The conductive polymer composite material serves multiple functions: it acts as both the structural body material of the electronic device and the antenna element, eliminating the need for separate external antenna components
3Reliability
If conventional antenna designs are used, then transmission coverage is maintained, but device volume increases
Solution Approach 1:
The device body structure simultaneously serves as both the housing and the antenna radiation element, with the conductive polymer composite material forming integral parts that perform dual functions as structural and electromagnetic components
Solution Approach 2:
The patent changes the electromagnetic parameters of the device body materials to achieve antenna functionality, transforming non-conductive or poorly conductive body materials into effective antenna elements through the use of conductive polymer composite materials
Data Source
AI summary
An antenna for transmitting a wireless signal is provided. The antenna includes a radiator and a ground structure. The ground structure surrounds the radiator. The ground structure includes a low-band spiral portion, a band separation portion and a high-band spiral portion. The low-band spiral portion and the high-band spiral portion are respectively connected to two ends of the band separation portion.