Antenna Alignment Using DC Voltage Peak Detection
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Solution Overview
Problem
Conventional antenna alignment devices are cumbersome and prone to errors, particularly in fine alignments required for point-to-point wireless networks, especially for microwave antennas on cell towers.
Innovation Solution
An antenna alignment device equipped with an embedded or connected direct current (DC) voltmeter, which measures DC voltage indicative of received signal strength to facilitate fine alignment by detecting peaks and determining the main lobe of the transmission pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional antenna alignment devices are used for fine alignment, then manual measurement and recording can be performed, but the process is cumbersome and prone to errors
Solution Approach 1:
The patent combines the voltmeter, peak detection circuitry, and alignment device into an integrated system. The voltmeter is physically coupled to the alignment device, allowing automatic measurement and display of voltage peaks during antenna alignment without requiring separate manual operations for measurement and recording
Solution Approach 2:
The alignment device automatically detects and displays voltage peaks through the integrated voltmeter, eliminating the need for manual measurement and recording by technicians. The system performs self-measurement and self-display, reducing human error and operational complexity
2Measurement precision
If manual process with external voltmeter is used, then DC voltage peaks can be measured, but automated storage of optimal alignment parameters is not provided
Solution Approach 1:
The patent merges the voltmeter, peak detection capabilities, and alignment parameter storage into a single integrated device. This combination enables automatic detection of voltage peaks and simultaneous automated storage of the corresponding alignment parameters, eliminating the need for separate manual recording processes
3Manufacturing precision
If technician manually records alignment parameters at high positions, then optimal alignment can be achieved, but the process is inconvenient and error-prone
Solution Approach 1:
The integrated alignment device performs automatic measurement, peak detection, and parameter storage without requiring manual intervention for recording. This self-service capability eliminates the inconvenience of manual recording at high positions while maintaining alignment accuracy through automated processes
Data Source
AI summary
An antenna alignment device includes an embedded (or is connected to) direct current (DC) voltmeter. In addition to using different sensors for azimuth and tilt alignment of an antenna, the DC voltmeter may be used to measure the DC voltage indicative of received signal strength at the antenna. The received signal may have a transmission pattern generated by a far side antenna. Particularly, the DC voltmeter may be used to detect peaks in the DC voltage and count the number of detected peaks as the antenna is moved changing its azimuth and the tilt. An odd number of peaks indicates the boresight of the antenna is in the main lobe of the transmission pattern, and an even number of peaks indicates otherwise. The highest peak in the odd number of peaks corresponds to the main lobe and the boresight of the antenna is aligned/tuned toward the highest peak.