A dual-polarized patch antenna for weather radar applications. Circular patch antennas 2019-03-20

A dual-polarized patch antenna for weather radar applications Rating: 8,5/10 631 reviews

Dual Band X Shape Microstrip Patch Antenna for Satellite Applications

a dual-polarized patch antenna for weather radar applications

In still a further embodiment of the invention, a method for the manufacturing of an antenna is presented. The waveguide 401 may also comprise a ridge 402 disposed along the center length of the individual waveguides so as to compress the lateral dimensions of a signal and ensure very low signal degradation or loss. The stripline 104 may be configured so that the antenna receives or emits polarized electromagnetic signals, as will be further discussed. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list. The waveguide may be manufactured from any number of electromagnetically conductive materials including brass, copper, silver, aluminum, or any other metal that has low bulk resistivity. Microwave Opt Technol Lett 51: 1324—1326, 2009; Published online in Wiley InterScience www.

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US7436361B1

a dual-polarized patch antenna for weather radar applications

The stripline 104 is disposed between the second dielectric layer 106 and third dielectric layer 107. The antenna comprises a microstrip patch antenna 101 and a waveguide 102 disposed substantially adjacent the microstrip patch antenna. To function properly, a waveguide must have a certain minimum cross-sectional dimensions relative to the wavelength of the desired signal. The microstrip patch antenna is comprised of a patch element 103, a stripline 104, a first dielectric layer 105, a second dielectric layer 106, a third dielectric layer 107, a first ground plane 108, a second ground plane 109, and coupling mechanisms for transferring signals between the patch element 103 and stripline 104 and between the stripline 104 and waveguide 102. The apparatus of claim 4, wherein the dual-polarized electromagnetic signals are linearly polarized.

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US7436361B1

a dual-polarized patch antenna for weather radar applications

You can change the cookie settings in your browser. Because of this, it is often referred as the hybrid mode. The apparatus of claim 4, wherein the dual-polarized electromagnetic signals are circularly polarized. The striplines 301 of each of the plurality of microstrip patch antennas 300 may be individually configured for vertical, horizontal, dual linear or circular polarity in a transceived signal. Take the square root of W+Dh x H+Dh , then divide that subtotal by two. A novel scheme is developed for mitigating measurement biases in agile-beam polarimetric phased array weather radar. The waveguide may be operably connected to the waveguide combiner via any number of methods including chemical adhesion, solder, mechanical clamps, rivets or screws.

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US7436361B1

a dual-polarized patch antenna for weather radar applications

Various modifications to the illustrated embodiments will be readily apparent to those skilled in the art, and the generic principles herein may be applied to other embodiments and applications without departing from the present teachings. More information on the subject can be found in the Privacy Policy and Terms of Service. The configuration of the microstrip may dictate the polarity and phase of the signal that is either transmitted or received by the microstrip patch antenna. When an array is steered with a fixed precision set of phase shifters, there are some angles where results are significantly better than others. The simultaneous transmission of horizontal and vertical polarizations results in an arbitrary elliptical polarization state transmitted, whereas the reception states in horizontal and vertical polarizations are neither copolar nor cross-polar to the transmitted state. Waveguides represent an effective mechanism for conveying signals with very little degradation or loss.

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A dual

a dual-polarized patch antenna for weather radar applications

To function properly, a waveguide must have a certain minimum cross-sectional dimensions relative to the wavelength of the desired signal. The microstrip patch antennas in the array may individually comprise: i a patch radiator having a defined area, and ii an associated microstrip. Previously developed algorithms by Gorgucci et al. Thus, the present teachings are not intended to be limited to embodiments shown, but are to be accorded the widest scope consistent with the principles and features disclosed herein. Weather radar system and method for detecting a high altitude crystal condition using two or more types of radar signals 2011-09-27 2017-04-18 Rockwell Collins, Inc. The antenna array may be operably connected to a plurality of waveguides not pictured via any number of methods including chemical adhesion, solder, mechanical clamps, rivets or screws. The array can be easily placed on the aircraft fuselage because of its ultra-thin thickness 0.

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US Patent for Low

a dual-polarized patch antenna for weather radar applications

In further embodiments, the respective couplings between the waveguide 206 and stripline 203, and stripline 203 and patch element 201 may be selected from the group comprising: probe coupling, proximity coupling, or edge feeding. In a further embodiment, the waveguide 500 and ridge 501 may have dimensions such that it is capable of transceiving polarimetric radar signals. The board vias may comprise generally cylindrical holes through the second dielectric layer 204 and third dielectric layer 205 which are plated with a conducting material. An overview is given of these results and capabilities. The waveguide 500 may comprise a ridge 501 disposed along the center length of the waveguide so as to compress the lateral dimensions of a signal and ensure very low signal degradation or loss. A program plan for risk reduction and system demonstration will be outlined. Mobility is a prime concern in the design of modern communications systems.

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US7436361B1

a dual-polarized patch antenna for weather radar applications

Weather radar system and method with fusion of multiple weather information sources 2013-11-21 2017-06-27 Rockwell Collins, Inc. In still a further embodiment, the waveguide ridge 501 may have a height 505 of from 1. The combiner is capable of receiving multiple instances of a common signal from a series of inputs and combining them to increase the overall signal strength. The respective couplings between a waveguide 206 and stripline 203, and stripline 203 and patch element 201 can be accomplished in any number of standard ways. The combiner 600 may comprise a plurality of inputs 601 which are combined to sum to a single output 602. In general, the invention applies to systems where a microstrip patch antenna is combined with a waveguide for the transmission or reception of electromagnetic signals. I don't need my network analyzer??? The waveguide 401 may also comprise a ridge 402 disposed along the center length of the individual waveguides so as to compress the lateral dimensions of a signal and ensure very low signal degradation or loss.

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Ultra‐lightweight dual‐polarized X‐band array antenna for airborne weather radar applications

a dual-polarized patch antenna for weather radar applications

Another potential improvement for modern communications devices is the incorporation of waveguide architectures. The time variation of Nw, Do, and μ averaged over a 5 km × 5 km area within which a network of gauges and a profiler were situated is shown to illustrate temporal changes associated with the gamma parameters as the squall line passed over the network. In the depicted embodiment, board-compression screw holes 405 are provided. A method for manufacturing an antenna, the method comprising the step: operably coupling microstrips of a plurality of microstrip patch antennas to at least one waveguide via a slot couple, each of the microstrip patch antennas of the plurality of microstrip patch antennas comprising: a patch radiator, and the microstrip; the waveguide comprising: a ridge along the center length of the waveguides. Anyway, I found a clever way to calculate a conversion from a standard rectangle patch antenna to a circular patch antenna. The role of the future navy continues to require higher levels of functionality, performance, and interoperability from shipboard systems. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention claimed.

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