Steerable Subreflector Alignment for Auto-Peaked Antennas
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Solution Overview
Problem
Existing antenna systems suffer from manual pointing inaccuracies and misalignments that lead to reduced signal quality and increased resource usage, making it difficult to maintain optimal communication links and requiring costly technician interventions.
Innovation Solution
An antenna assembly with a steerable subreflector and tilt assembly, controlled by an auto-peak device, allows for precise beam alignment during installation and over time, using signal strength measurements to adjust the subreflector's tilt position for optimal pointing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If manual pointing is used to align the antenna during installation, then the installation process is simple and low-cost, but the pointing accuracy is insufficient leading to beam misalignment
Solution Approach 1:
The antenna system performs self-alignment by automatically measuring signal strength at multiple tilt positions and selecting the optimal position without requiring external measurement equipment or technician intervention, thereby achieving high pointing accuracy while keeping the alignment system simple and low-cost
Solution Approach 2:
The system uses signal strength measurements as feedback to automatically determine the optimal tilt position of the subreflector, creating a closed-loop control system that achieves precise beam alignment without complex external measurement devices
2Reliability
If the antenna is manually pointed to be sufficiently aligned, then installation is quick and easy, but the beam gain in the target direction is reduced
Solution Approach 1:
The antenna system automatically optimizes its own alignment by measuring signal strength at multiple tilt positions and selecting the best position, ensuring maximum beam gain and reliable communication links without requiring complex manual alignment procedures or specialized technician skills
3Stability of the object's composition
If the mounting bracket is locked down tightly to prevent movement, then the antenna structure is stable, but the beam direction shifts during the locking process
Solution Approach 1:
The system performs preliminary coarse alignment of the mounting bracket to get the antenna approximately pointed at the target, then uses the automated tilt assembly to perform fine alignment of the beam direction, separating the coarse stabilization function from the fine pointing function to avoid beam shifts during locking
4Reliability
If technician intervention is used to diagnose and correct performance degradation, then accurate diagnosis can be made, but the cost and time for maintenance increases
Solution Approach 1:
The antenna system automatically monitors its own performance by measuring signal strength at multiple tilt positions and can self-diagnose and self-correct alignment issues by repositioning the subreflector, eliminating the need for technician visits for routine maintenance and performance optimization
Solution Approach 2:
The system continuously monitors signal strength as feedback to detect performance degradation and automatically adjusts the subreflector tilt position to restore optimal performance, creating a self-diagnosing and self-correcting maintenance 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
This solution ensures accurate and efficient alignment, reducing resource usage, minimizing maintenance costs, and improving communication performance by maintaining optimal data rates without the need for technician visits.
Implementation Method 1
The feed may be oriented relative to the reflector and the subreflector to produce a beam
Data Source
AI summary
Methods of antenna pointing and antenna assemblies implementing those methods are disclosed. An example method includes providing a user terminal antenna assembly including an antenna and an auto-peak device. The antenna includes a reflector, a subreflector, and a feed, the feed oriented relative to the reflector and the subreflector to produce a beam. The antenna further includes a tilt assembly to tilt the subreflector relative to the reflector and the feed. The method further includes providing a control signal to tilt the subreflector in a plurality of tilt positions to move the beam while measuring corresponding signal strength of a signal communicated via the antenna at each of the plurality of tilt positions. Additionally, the method includes selecting a tilt position from the plurality of tilt positions based on a measured signal strength, and providing the control signal to tilt the subreflector to the selected tilt position.