Compact Dual-Band HDTV Antenna With Tapered Loop And Symmetric Arms
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Solution Overview
Problem
Existing HDTV antenna designs are often large and cumbersome, making them difficult to install and aesthetically unappealing, while also requiring separate VHF and UHF elements that increase cost and reduce signal efficiency.
Innovation Solution
A compact dual-band HDTV antenna assembly with a tapered loop antenna element and symmetric arms on a substrate, eliminating the need for a diplexer by naturally coupling impedance across both high VHF and UHF bands, allowing for a single 75 ohm balun and reducing the antenna's size and cost.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate VHF and UHF antenna elements are used, then signal reception for both bands is achieved, but device complexity and cost increase
Solution Approach 1:
The patent combines separate VHF and UHF antenna elements into a single integrated antenna structure. The tapered loop design with symmetric arms provides both VHF and UHF reception capabilities within one unified element, eliminating the need for multiple separate antenna components and their associated diplexers.
Solution Approach 2:
The integrated antenna element serves multiple functions by simultaneously receiving both VHF and UHF broadcast signals. The single antenna structure is designed to operate across both frequency bands, making it a universal solution that replaces multiple specialized antenna elements.
2Adaptability or versatility
If a diplexer is used to combine VHF and UHF signals, then both bands can be received through a single feed, but signal efficiency is reduced and cost increases
Solution Approach 1:
The patent extracts and eliminates the diplexer component from the antenna system. By designing the antenna elements and feed network to naturally support both VHF and UHF bands without requiring signal splitting and recombination, the diplexer is removed entirely, reducing signal loss and component cost.
3Adaptability or versatility
If traditional HDTV antenna designs are used, then comprehensive signal coverage is achieved, but the antenna becomes large and cumbersome
Solution Approach 1:
The patent employs a tapered loop design with curved symmetric arms instead of traditional linear or rectangular antenna elements. This curved geometry allows the antenna to maintain effective electrical length for signal reception while reducing the physical footprint and overall size of the antenna structure.
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 solution provides improved signal efficiency and reduced costs by eliminating the need for separate VHF and UHF elements, resulting in a smaller, easier-to-install antenna with enhanced VHF and UHF gain performance.
Implementation Method 1
The plurality of elements may include an antenna element having a generally annular shape with an opening and spaced-apart first and second portions
Data Source
AI summary
Exemplary embodiments are disclosed of HDTV antenna assemblies. In an exemplary embodiment, a high definition television antenna assembly generally includes an antenna element having a generally annular shape with an opening and first and second end portions. First and second arms are spaced apart from the antenna element and extend at least partially along portions of the antenna element. A first member extends between the first arm and the first end portion of the antenna element. A second member extends between the second arm and the second end portion of the antenna element. A substrate supports and/or is coupled to the antenna element, the first and second arms, and the first and second members.