Hybrid Microstrip-Waveguide Antenna for Low-Loss Dual Polarization
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Solution Overview
Problem
Current telecommunications systems face challenges in achieving lightweight, low-cost, high-efficiency antennas capable of dual circular-polarization operation for aircraft and dual linear-polarization operation in weather radars, while maintaining a compact footprint and minimizing signal loss.
Innovation Solution
A low-loss, dual-polarized antenna system combining microstrip patch antennas with waveguides, featuring a coupling interface to enable efficient transmission and reception of electromagnetic signals, with the option of dual linear or circular polarization, and an antenna array configuration that includes a waveguide combiner for enhanced signal strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If microstrip patch antennas are used for dual circular-polarization operation in aircraft, then the antenna can be lightweight and low-cost, but signal loss increases
Solution Approach 1:
The patent combines a microstrip patch antenna with a waveguide structure into a hybrid antenna system. The microstrip patch antenna provides lightweight, low-cost, dual circular-polarization capability, while the waveguide component reduces signal loss by providing a low-loss transmission path for electromagnetic signals between the antenna element and the feed network.
2Loss of energy
If waveguides are incorporated into the antenna system, then signal loss decreases, but device complexity increases
Solution Approach 1:
The waveguide is integrated directly with the microstrip patch antenna element, merging two separate components into a unified hybrid structure. This integration reduces the number of discrete parts and simplifies assembly while maintaining the low-loss signal transmission benefits of the waveguide.
3Volume of moving object
If the antenna footprint is reduced for aircraft tail-mount compatibility, then mobility improves, but manufacturing precision requirements increase
Solution Approach 1:
The patent employs a low-profile waveguide structure that extends in the vertical dimension rather than requiring increased horizontal footprint. This allows the antenna to maintain a compact planar footprint suitable for aircraft tail-mount installation while accommodating the waveguide components through vertical stacking and three-dimensional integration.
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 solution provides a lightweight, cost-effective antenna architecture that supports dual polarization operations with minimal signal loss, suitable for aircraft and weather radar applications, while maintaining a compact form factor and high efficiency.
Implementation Method 1
a microstrip patch antenna... capable of dual circular-polarization operation for aircraft and dual linear-polarization operation in weather radars
Implementation Method 2
Waveguides represent an effective mechanism for conveying signals with very little degradation or loss
Implementation Method 3
a coupling interface between the antenna and waveguide
Data Source
AI summary
The present invention is a low-loss polarized antenna for satellite communications and polarimetric weather radar. The antenna may comprise: (a) a microstrip patch antenna, (b) a waveguide, and (c) a coupling interface between the antenna and waveguide. The microstrip patch antennas may individually comprise: (i) a patch radiator having a defined area, and (ii) an associated microstrip.In a further embodiment of the invention, an antenna array is presented. The antenna array may comprise: (a) a plurality of microstrip antennas, and (b) a plurality of waveguides. The antenna array may further comprise: (c) a waveguide combiner. The microstrip patch antennas may individually comprise: (i) a patch radiator having a defined area, and (ii) an associated microstrip.In still a further embodiment of the invention, a method for the manufacturing of an antenna is presented. The method may comprise the step: (a) operably coupling a microstrip patch antenna to a waveguide.