Active UHF/VHF Antenna Dynamic Tuning for HD Signal Reception
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Solution Overview
Problem
Conventional antennas for UHF and VHF bands face performance limitations, requiring strategic placement, elevation, and signal conditioning, which has led to a decline in their use with the rise of internet streaming, and they fail to support high definition television signals effectively.
Innovation Solution
Active UHF/VHF antennas with an antenna element and parasitic elements coupled to a multi-port switch, controlled by a microprocessor, allowing dynamic tuning and optimization of signal reception by selecting the optimal mode based on receive signal strength indicator (RSSI) for improved signal quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional antennas are used for UHF/VHF signal reception, then the antenna structure is simple, but the signal reception quality is insufficient and cannot support high definition television signals
Solution Approach 1:
The patent implements dynamic tuning capability through a microprocessor-controlled switching system that adjusts antenna element configurations based on received signal strength indicator (RSSI) measurements. The system dynamically reconfigures the antenna structure by switching between different parasitic element connections to optimize signal reception for HD television broadcasts, transforming a static antenna into an adaptive system.
Solution Approach 2:
The antenna design incorporates multiple parasitic elements that can be connected in different configurations through a multi-port switch, allowing the same antenna structure to serve multiple frequency channels and signal conditions. This multi-functional capability enables the antenna to handle various UHF/VHF channels and signal strengths using a single integrated structure.
2Reliability
If strategic placement and elevation are required for conventional antennas, then signal reception can be improved, but the ease of operation and installation is reduced
Solution Approach 1:
The antenna system performs self-optimization by automatically measuring RSSI and reconfiguring its own elements through the microprocessor-controlled switch matrix. The antenna adjusts its own configuration without requiring manual intervention or strategic positioning by the user, enabling plug-and-play installation while maintaining optimal signal reception through automated adaptation.
Solution Approach 2:
The system continuously monitors signal strength through RSSI measurements and uses this feedback to dynamically adjust the antenna configuration. The microprocessor receives signal quality information and automatically reconfigures the parasitic elements to maximize reception, creating a closed-loop control system that eliminates the need for manual placement optimization.
3Adaptability or versatility
If conventional antennas lack dynamic tuning capability, then the device complexity is low, but the adaptability to different signal conditions and channels is poor
Solution Approach 1:
The patent implements dynamic tuning capability through a microprocessor-controlled switching system that adjusts antenna element configurations based on received signal strength indicator (RSSI) measurements. The system dynamically reconfigures the antenna structure by switching between different parasitic element connections to optimize signal reception for HD television broadcasts, transforming a static antenna into an adaptive system.
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 active UHF/VHF antennas significantly enhance signal reception in UHF and VHF bands, enabling better access to high definition broadcast television signals and addressing the limitations of conventional antennas.
Implementation Method 1
a parasitic element positioned adjacent to each of the antenna element and the ground plane, wherein the parasitic element is coupled to the ground plane at a multi-port switch
Data Source
AI summary
An active antenna for UHF/VHF signal receiving is described, the active antenna being capable of configuration in one of a plurality of possible modes. The active antenna includes an antenna element configured for multiple resonances in the UHF/VHF bands, and capable of generating multiple radiation modes as well as active impedance matching using a microprocessor and multi-port switch having variable or multiple selectable modes. The active antenna may include a second antenna element arranged in a right-angle orientation with respect to the first antenna element. The first antenna element, second antenna element, or a combination may be selected for receiving signals in at a desired frequency. A three-dimensional antenna assembly is also described. Each of the examples illustrate an active beam steering antenna capable of UHF/VHF signal receiving.