Phase antenna center (FCA) and its search in Ansys HFSS

Phase antenna center (FCA) and its search in Ansys HFSSWhen calculating the high-frequency technique with the use of mirror reflecting systems (parabolic mirrors), there is always the problem of searching for the phase center of the antenna (FCA), since proper operation of the mirror is possible only if the focus is on an antenna (called the feed, feeder, feedhorn) which has a phase wave front in the form of a sphere, and the center of this sphere is in the focus of the mirror. With any deviations, both the shape of the phase front from the sphere, and the displacement of the FCA from the focus of the mirror - the efficiency of the mirror system falls...
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How will Starlink launch - satellite Internet from Ilona Mask

How will Starlink launch - satellite Internet from Ilona MaskSeveral days ago on Habré Article 3r3217 appeared. how Starlink - satellite Internet from SpaceX - will affect the work of banks and other organizations. Today we decided to continue this topic and talk about how the "star network" is planning to deploy.
 
 
3r311.
nasa.gov /PD [/i] 3r3147.
 
 

A few words about Starlink


 
Starlink is a network of near-earth satellites, which is developed by Ilona Mask SpaceX. The goal of the project is to create a high-performance communication channel that will provide an Internet connection anywhere in the world.
 
 
Starlink work began in 2015...
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Integration of 3CX with 1C: Trade Management - a method of combining configurations

Integration of 3CX with 1C: Trade Management - a method of combining configurationsIn 3r3147. previous article 3r3148. We reviewed the integration of 3CX v15.5 with a typical configuration of 1C Trade Management, edition 11 (???.167) for Russia. However, some experts in the comments expressed concern that disabling the compatibility mode of the 1C platform with the current version of the Trade management configuration could cause various problems for users. Although we did not receive any information about any problems, we prepared a second instruction describing the combination of configurations. 3r3145.  3r3154. 3r3145.  3r3154. So, at the moment we offer two ways to integrate ...
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Programmable valve arrays: how they will help networks 5G

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Installing FreeSWITCH 1.8 on Debian 9 (Raspbian Stretch, the basic image of the SmartDomain system MajorDoMo on Rasbperri Pi)

Installing FreeSWITCH 1.8 on Debian 9 (Raspbian Stretch, the basic image of the SmartDomain system MajorDoMo on Rasbperri Pi) 3r33434. 3r3-31. I continue a small series of articles devoted to the creation of a “smart home” and step-by-step instructions for self-installation /configuration. 3r33411.  3r33434. But now it will be mainly about Freeswitch and IP telephony. 3r33411.  3r33434. In August, the developer of the open VoIP IP telephony platform FreeSWITCH, ClueCon, published a public release of the new software version - 1.8. (??? has already been released). 3r33411.  3r33434. In connection with the release of this version of the Freesfitch 1.8 IP telephony platform, there was a decision to install it on Raspberry ...
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FM spam: soon the posters will “grow wiser” and start broadcasting the FM signal, scoring our favorite radio station

FM spam: soon the posters will “grow wiser” and start broadcasting the FM signal, scoring our favorite radio stationLast year, a very interesting presentation was presented at the conference “USENIX Symposium on Networked Systems Design and Implementation”. How to turn a T-shirt or billboard into an FM radio station. The presentation author explains how to “fit” digital data and arbitrary audio tracks onto an FM signal already flying over the air. Through the effect of backscattering radio waves. The presentation seemed so interesting to me that I could not refrain from preparing a brief retelling.
 
What is the practical value of such "FM-jerking"? Are they generally real, or is it from science fiction? And ...
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Announced Wi-Fi 6: what you need to know it is the new standard

 
3r3-31. In early October, the Wi-Fi Alliance announced a new version of the standard Wi-Fi - Wi-Fi 6. Its release is scheduled for the end of 2019. The developers changed the naming approach - they replaced the usual ???ax-type constructions with single digits. We understand what else is new. 3r3179.  
3r3179.  
Announced Wi-Fi 6: what you need to know it is the new standard 3r3190. 3r3179.  
3r3119. 3r3152. /Wikimedia / yonolatengo
/ CC 3r3194.
3r3179.  
3r3179.  

Why change the name

3r3179.  
By According to 3r3190. developers of the standard, the new approach ...[/h]
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Losses in mismatched line

In the literature described approximate formulas for calculating additional heat losses in uncoordinated transmission lines (cables, waveguides) due to standing waves. The limitation of such formulas is that the own losses of the matched cable should be up to 2 dB. Today, high-loss cables are increasingly used for microwave frequencies above 1 GHz. Broadband antennas often have a CWS 1. To find a compromise between the length of the line (for example, the antenna's suspension height), its cost, to estimate losses in a deliberately mismatched line (for example, 75 Ohm cable in 50 Ohm systems)...
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Soon half of the calls will be from robots. Advice: do not answer (?)

Soon half of the calls will be from robots. Advice: do not answer (?) 3r-33199. 3r3-31. Today we have an unusual material - this is a translation of an article about illegal automatic dialing in the USA. For centuries, there have been people who used technology not for good, but to fraudulently cash in on gullible citizens. Modern telecommunications are no exception, spam or outright "divorces" can overtake us by SMS, by mail, by phone. With phones it has become even more fun, because today there are automatic calls (hereinafter - robozvonki). Invented as a legitimate and transparent way to inform people and make additional sales, they are very fond of scammers; ...
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MNaaS and eSIM - the pros and cons of virtualization for mobile operators and their customers

Virtualization technologies are coming to the network of mobile operators. We started appear Services such as Mobile Network as a Service (MNaaS) and acquire the popularity of electronic SIM. Let's talk about the potential benefits of these technologies for operators and customers and the complexities of their implementation.
 
 
MNaaS and eSIM - the pros and cons of virtualization for mobile operators and their customers

 
/ PxHere /PD
 
 

Mobile network as a service


 
The technology "mobile network as a service" (MNaaS ...[/h]
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