Multi-layer PCB Smart Antenna for Signal Integrity
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Solution Overview
Problem
Yagi antennas require labor-intensive and costly installation processes due to the need for precise alignment and reorientation with signal strength indicators and external measurement equipment, especially when new transmitter sites become available.
Innovation Solution
A multi-layer printed circuit board (PCB) system with high-gain, directional antennas and a processor that gates RF signals and selects antenna transmission patterns, eliminating mechanical structures and connectors to reduce material and labor costs while enabling efficient omni-directional and point-to-point communications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional Yagi antennas are used, then high gain and directional communication are achieved, but installation becomes labor-intensive and costly due to precise alignment requirements
Solution Approach 1:
The patent divides the antenna system into multiple PCB-integrated antenna elements arranged in specific geometries (Yagi, parasitic, or stacked configurations). Each antenna element is a separate functional unit that can be independently optimized and integrated onto the PCB, eliminating the need for complex mechanical assembly and alignment during installation.
Solution Approach 2:
The patent replaces traditional mechanical antenna structures (wire elements, mechanical connectors, adjustable positioning mechanisms) with printed circuit board-based antenna elements. The antenna patterns are defined by PCB trace geometries rather than mechanical arrangements, eliminating the need for mechanical alignment and adjustment during installation while maintaining high gain and directional characteristics.
2Reliability
If traditional Yagi antennas are used, then directional communication is achieved, but manufacturing time and cost increase due to complex assembly processes
Solution Approach 1:
The patent merges the antenna elements, feeding networks, and RF circuitry into a single integrated PCB structure. Multiple antenna elements (Yagi elements, parasitic elements, or stacked configurations) are co-fabricated on the same PCB substrate using standard PCB manufacturing processes, eliminating separate assembly steps and reducing manufacturing complexity while maintaining high gain and directional performance.
Solution Approach 2:
The patent designs the PCB antenna system to provide multiple antenna patterns (omni-directional, Yagi directional, parasitic configurations) that can be electronically selected or combined. This multi-functionality is achieved through integrated switching networks and feeding structures on the PCB, allowing a single device to replace multiple specialized antennas, thereby reducing overall manufacturing complexity and cost.
3Ease of manufacture
If mechanical connectors and structures are used in antenna construction, then antenna assembly is achievable, but reliability decreases and signal loss increases
Solution Approach 1:
The patent replaces all mechanical connectors, joints, and structural elements with PCB-trace-based electrical connections. The antenna elements are electrically connected through controlled impedance traces on the PCB substrate rather than through mechanical connectors or solder joints, eliminating contact resistance, connector degradation, and assembly variability while improving signal integrity and system reliability.
4Reliability
If traditional antenna construction methods are used, then antenna functionality is achieved, but signal loss increases due to mechanical connections
Solution Approach 1:
The patent replaces mechanical connector interfaces with integrated PCB trace connections, eliminating contact resistance, connector impedance mismatches, and signal reflection losses. The continuous controlled impedance traces on the PCB provide consistent signal paths from the antenna elements to the RF circuitry, minimizing signal loss and improving overall signal integrity compared to traditional mechanically-connected antenna systems.
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 system achieves reduced manufacturing time and cost, improved reliability, and minimized signal loss through direct RF circuit connections, with enhanced directivity and compact, lightweight design.
Implementation Method 1
The printed circuit antenna has at least one director formed by strip conductors disposed on the substrate, a reflector formed by the edge of a ground area disposed on the substrate, and a radiating element formed by strip conductors on the substrate
Data Source
AI summary
Systems and methods are disclosed to transmit and receive radio frequency (RF) signals by providing a plurality of high gain, highly directional antennas on a multi-layer printed circuit board; using a processor to gate RF signals from each antenna and to select an antenna transmission pattern based on antenna turned on or the combination of a number of antennas turned on, among others.