Compact Indoor Yagi Antenna with Adjustable Bracket
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Solution Overview
Problem
Traditional high-gain TV Yagi antennas are large and inconvenient to adjust, requiring specific installation and outdoor mounting, which limits their usability and lifespan due to environmental factors.
Innovation Solution
A compact high-gain indoor Yagi antenna design featuring a sealed PCB substrate with a high-gain amplifier and adjustable bracket with a suction disk mechanism, allowing flexible orientation and angle adjustment for indoor installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional high-gain TV Yagi antenna is used, then the antenna gain is high, but the antenna size is large and requires specific installation brackets and outdoor mounting
Solution Approach 1:
The antenna is divided into separate functional components: the oscillating element, director element, reflector element, and feeding system are independently positioned and connected through the PCB substrate. This segmentation allows each component to be optimized independently while maintaining overall high gain performance in a compact configuration.
Solution Approach 2:
The oscillating element is nested within the PCB substrate structure, with the PCB serving as both the mounting platform and the feeding transmission line. The director and reflector elements are positioned in close proximity to the oscillating element, creating a nested arrangement that reduces overall antenna volume while maintaining electrical performance.
2Reliability
If a traditional Yagi antenna is installed, then the antenna provides signal reception, but the directional characteristic makes it extremely inconvenient to adjust orientation and angle after installation
Solution Approach 1:
The antenna incorporates an adjustable mounting bracket system that allows the entire antenna assembly to be rotated and oriented in different directions after installation. The bracket includes adjustment mechanisms that enable users to change the antenna's pointing direction to optimize signal reception without requiring complex reinstallation procedures.
3Ease of manufacture
If a traditional Yagi antenna is mounted outdoors, then the antenna can be installed, but weather factors cause the use time and service life to be greatly reduced
Solution Approach 1:
The antenna replaces traditional outdoor mechanical mounting structures with an indoor-compatible design that can be mounted on windows, walls, or other indoor surfaces. The compact PCB-based structure eliminates the need for large outdoor brackets and embracing rods, allowing installation in protected indoor environments while maintaining signal reception capability.
Solution Approach 2:
The antenna uses a compact enclosed housing that protects the internal PCB and electronic components from environmental damage. This protective enclosure allows the antenna to be installed in various locations including indoor environments, thereby extending service life by protecting against weather factors while maintaining installation flexibility.
4Volume of moving object
If the number and size of oscillators are reduced, then the antenna size is compact, but the antenna performance may not meet standards
Solution Approach 1:
The antenna uses a high-gain amplifier integrated into the PCB substrate to compensate for the reduced size of the oscillating element. By changing the gain parameter of the amplifying system and optimizing the impedance matching network on the PCB, the antenna achieves standard-compliant performance despite the compact oscillator dimensions.
Solution Approach 2:
The PCB substrate serves as an intermediary that efficiently couples the compact oscillating element to the director and reflector elements. The PCB's transmission lines and impedance matching structures act as intermediaries to maximize the effectiveness of the small oscillator, enabling compact size while maintaining performance through optimized electromagnetic coupling.
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
Enables effective indoor signal reception with improved durability and aesthetics by reducing the size of critical components and providing adjustable mounting options, overcoming the directional and environmental limitations of traditional antennas.
Implementation Method 1
the suction disk of the bracket discharges air by pressing downwards the lock catch, a vacuum state between the suction disk and a mounting plane facilitates the suction disk to be adsorbed on the mounting plane
Data Source
AI summary
An indoor Yagi antenna includes an antenna body, a PCB substrate and an antenna bracket. The antenna body includes an upper shell and a lower shell which form an inner cavity containing the PCB substrate including an end connected to a signal director, an end connected to a signal reflector, a middle section connected to a main antenna oscillator, the portions of the three which are electrically contacted with the PCB substrate respectively, are wrapped by the upper shell and the lower shell, the bottom surface of the lower shell is provided with a feed line terminal block connected to the PCB substrate; the antenna bracket includes a bracket rod that can be flexibly bent, the top end of the bracket rod is provided with a universal adjusting mechanism connected to the lower shell, and the bottom end of the bracket rod is provided with a bracket base.