Admin

,Noradavis,post a CST file with such problems..!!!

,,,for those who want to test... ESA Antenna.cst

,,,could it be like that...!!??

,,,this system is a bit complicated, but I think it can be executed...!!! ,,,and why the frequency of 300MHz...??? ,,,model of a tunable antenna embodiment with Variable capacitors....!!!

No money for a factory TV antenna or have a desire to make something with your hands? Then You have an easy and quick project — antenna-butterfly. It is easy to manufacture, compact shortwave HF-antenna. It is called so because of the resemblance with a butterfly. For its production we need a copper wire with a diameter of about 2-4 mm. If the Antenna of the butterfly is done for external, that is external to the application — you can use 4 mm., and for the home (for example, to improve reception of 3G/4G or WiFi) will fit even a piece of ordinary TV coax cable 75 Ohm. The production is simple — make a rectangular frame from wire. For the theory of conical antennas Butterfly(BowTie) see this ...https://habrahabr.ru/post/328728/

Updated <<KONUS>> 4G antenna model (1800 MHz) with gain up to 17 dBi (max 16.7 dBi), which is also made of composite materials.Composite material consists of two layers of thin, pre-painted aluminum sheet, between which polypropylene(dielectric constant (2.2–2.5) is enclosed,thickness = 3.2mm. Thin composite panels with a thickness of 3.0 mm with a wall of 0.21-0.3 mm,4.0 mm thick panels with 0.4 mm thick aluminum sheet The antenna is made in the form of a cone, with a total length of 620 mm. The output has two F-connectors for connecting a 50-ohm or 75-ohm coaxial cable. It is possible to install SMA connectors on the antenna and make a cable assembly with pigtails for an additional fee.for a fee. Installing and configuring the antenna is quite simple. Instructions for setting up the antenna are attached. You can use it to set up the antenna without even knowing which way the base station is located. ,,,,information from...https://www.avito.ru/voronezh/tovary_dlya_kompyutera/4g_antenna_1800_mgts_s_usileniem_do_17_dbi_2120447796?referer=https://www.youtube.com/

Operating frequency range 2000 MHz Uplink 1900 - 2170 3G mobile connection Radiation sector in the vertical plane 34.5 Horizontal radiation sector 35.0 Gain 15 dB Vertical polarization UMTS 2000 Standard Maximum input power 100.0 W Wave resistance 50.0 ohm VSWr of input and output, no more than 1.5 Mounting position on the bracket / on the mast (up to 50 mm) Housing material Aluminum Connector type N-female Operating temperature range -40..+60 Dimensions 750×110×90 mm Weight 0.3 Kg

,,, it seems that the user "com66" launches a new cage antenna panel that ensures a good isolation between ports...

Universal 3G / 4G MIMO 2x2 irradiator for parabolic reflector ("plates"). F=1700-2700 MHz. It works in the LTE1800, DC-HSPA+, LTE2600, and WIFI2400 standards. Equipped with F-female connectors. KY=9dBi. Own the coefficient of the radiator, dBi 8÷10 Polarisation -Vertical/ horizontal / inclined Width of the bottom of the irradiator in the plane of the vector E at the level of -10dB, deg-86 - 130 Width of the bottom of the irradiator in the plane of the vector H at the level of -10dB, deg-104 - 116 Input impedance, Ohms-75 Decoupling between inputs in the operating range, dB-More than 28 SWR in the operating frequency range, max.1,8 Permissible power, 10W Overall dimensions, mm 140 x 140 x 140 Weight, g350 Connector 2 x F-female Material of the protective cover Polycarbonate+ABS Antenna material galvanized steel Protective coating powdered polymer paint

I think this question is given by everyone here I found an article about Wi-Fi , hope for your understanding admins... What is wifi and how to use it (2.4 GHz and 5 GHz.) Wi-Fi (pronounced [Wi-Fi], abbr. Wireless Fidelity — the standard equipment for broadband wireless communication intended for the organization of local wireless networks Wireless LAN. The installation of such networks is recommended where the deployment of the cable system is impossible or economically impractical. Thanks handover users can move between access points throughout the network coverage Wi-Fi without disconnection. Developed by a consortium Wi-Fi Alliance based on IEEE 802.11 standards. Mobility Mobile devices (PDAs and laptops), equipped with a client Wi-Fi receiver-transmitter can connect to a local network and access the Internet via so-called access points or hotspots. The first Wi-fi Wi-Fi was created in 1991 NCR Corporation/AT&T (later Lucent and Agere Systems) in Nieuwegein, the Netherlands. Products, initially for systems and cash services, was brought to market under the name WaveLAN and provided data transfer rate of 1 to 2 Mbit/s. Vic Hayes (Vic Hayes) — the Creator of the Wi-Fi was named "father of Wi-Fi" and was in the team involved in the development of standards such as IEEE 802.11 b, 802.11 a and 802.11 g. In 2003, Vic retired from Agere Systems. Agere Systems are unable to compete on equal terms in difficult market conditions, despite the fact that its products have occupied the niche of cheap Wi-Fi solutions. 802.11 abg all-in-one chipset from Agere (code named: WARP) didn't sell well, and Agere Systems decided to quit the Wi-Fi market in late 2004. Wireless-Fidelity -literally "Wireless Reliability". Wi-Fi: How it works Usually a scheme Wi-Fi network contains one access point (AP). access point) and at least one client. Access point is broadcasting its SSID (eng. Service Set IDentifier, Network name — network identifier, network name) via a special packet, called signaling packets transmitted every 100 MS. Signaling packets are transmitted at the speed of 1 Mbps and have a small size, so they do not affect network performance. Since 1 Mbit/s minimum data transfer rate for Wi-Fi, the client, receive the signal packet, can be sure that I will be able to connect at a speed no less than 1 Mbps. Knowing the parameters of the network (i.e. the SSID), the client can figure out if you can connect to this access point. The program, built-in Wi-Fi card of the client, may also affect the connection. When getting within range of two access points with identical SSID, the software can select between them on the basis of the signal level. Standard Wi-Fi gives the customer complete freedom in the choice of criteria for connection and roaming. This is the advantage of Wi-Fi, although it means that one of the adapters can perform these actions much better than the other. The latest versions of operating systems contain a feature called zero configuration which shows the user all available networks and allows you to switch between them on the fly. This means that roaming is fully controlled by the operating system. Wi-Fi transmits data in the ether, so it has properties similar to non-switched ethernet network, and it can cause the same problems as with a non-switched ethernet networks. Wi-Fi and mobile phones Some believe that Wi-Fi and similar technologies may eventually replace cellular networks such as GSM. Barriers to such developments in the near future are the lack of roaming and authentication features (see 802.1 x, SIM cards and RADIUS), limited frequency range and very limited radius of action Wi-Fi. Looks more correct comparison of Wi-Fi with other networks, such as GSM, UMTS or CDMA. However, the Wi-Fi is ideal for VoIP in corporate networks or in a SOHO environment. The first equipment was available in the early 90s, but had not entered commercial operation until 2005. Then the company Zyxel, UT Starcomm, Samsung, Hitachi and many others introduced on the market VoIP Wi-Fi phones at "reasonable" prices. In 2005 ADSL ISP providers started to offer VoIP services to your customers (for example German ISP XS4All). When calls using VoIP are very cheap and often even free, providers are able to provide VoIP services, had the opportunity to open up a new market of VoIP services. GSM phones with integrated support for Wi-Fi and VoIP have begun to appear on the market, and potentially they can replace phones. At the moment, a direct comparison of the Wi-Fi and cellular networks is impractical. Phones using Wi-Fi only have a very limited range, so deployment of such networks is very expensive. However, the deployment of such networks may be the best solution for local use, for example, in corporate networks. However, devices that support multiple standards can take a significant market share. Commercial use of Wi-Fi Commercial access services based on Wi-Fi is available in places such as Internet cafes, airports, and cafes around the world (normally called Wi-Fi-cafés), but their coverage can be regarded as a point compared with the cellular networks: • Ozone and OzoneParis In France. In September 2003, Ozone started deploying the OzoneParis network across The City of Lights. The ultimate goal is the creation of a centralized Wi-Fi network that can cover your Paris. The basic principle of Ozone Pervasive Network is that this network on a national scale. • WiSE Technologies provides commercial access in airports, universities, and independent cafes in the U.S.; • T-Mobile provides hotspots for Starbucks in the US and the UK, as well as more than 7500 hotspots in Germany; • Pacific Century Cyberworks provides access to the Pacific Coffee stores in Hong Kong; • Columbia Rural Electric Association is trying to deploy a network of 2.4 GHz Wi-Fi on an area of 9,500 km?, located between counties Walla-Walla and the Columbia in Washington state and Umatilla, Oregon; To the list of other major networks in the US are: Boingo, Wayport and iPass; • Sify, an Indian Internet service provider, has installed 120 access points in Bangalore, in hotels, galleries and government institutions. • Vex has a large network of hotspots located throughout Brazil. Telefónica Speedy Wi-Fi began providing its services in a new growing network that has spread to the territory of the state of Sao Paulo. • BT Openzone owns many hotspots in the UK, working in McDonald's, and has a roaming agreement with T-Mobile UK and ReadyToSurf. Their clients also have access to The Cloud hotspots. • Netstop provides access to New Zealand. • The company Golden Telecom provides support for municipal Wi-Fi network in Moscow, and also provides communication channels for the project Yandex.Wi-Fi ([2]). • EarthLink plans in the third quarter of 2007 to fully connect Philadelphia (USA) to the wireless Internet. This will be the first city-metropolis in the USA which is fully covered by Wi-Fi. The cost will be around 20-22 dollars a month at connection speed of 1 Mbit/sec. For low-income residents of Philadelphia cost would be 12-15 dollars a month. Currently, the city centre and surrounding areas are already connected. Connect the other regions will be made as the installation of transmitters. Wireless technology in industry For use in industry Wi-Fi technology are available while a limited number of suppliers. So Siemens Automation & Drives offers Wi-Fi solutions for their controllers SIMATIC in accordance with the IEEE 802.11 b standard in the free ISM-band 2.4-GHz and providing a maximum transmission speed of 11 Mbit/s. these technologies are mainly used to control moving objects and in warehouse logistics, as well as in cases when for any reason it is impossible to lay a wired Ethernet network. International projects Another business model is to connect existing networks to the new one. The idea is that users will share your frequency response using personal wireless routers completed. For example, FON is a young Spanish company created in November 2005. She intends to become the largest network of hotspots worldwide by the end of 2006 with 30,000 access points. Users are divided into three categories: linus, allocating free access to the Internet; bills, selling your frequency range; and aliens that use access via bills. Thus, the system is similar to peer-to-peer services. Despite the fact that the FON receives financial support from such companies as Google and Skype, only with time it will be clear, will this idea really work. Now this service has three main problems. The first is that for transition of project from initial stage to bulk requires more attention from the public and the media. You also need to consider the fact that the provision of access to your Internet channel to others may be limited by your contract with the ISP. Therefore, the Internet providers will try to protect their interests. The same is likely to come from record companies opposed to the free distribution MP3. And third, the FON software is still in beta stage, and it remains only to wait when will be solved the problem of security.

,,,the only method of powering the antenna is the one indicated in the sketch...!!!

,,,hi buddy...!!! ,,,it seems that the pdf file does not have all the dimensions required for the antenna...!!!

,,,maybe only this...

,,,maybe FA20 with more patches..!!!

,,,good work WEAZY...!!!

Universal remote panel antenna for receiving and amplifying digital TV (DVB-T, DVB-T2) and analogue (UHF) channels. Connector type - F-female. Electrical characteristics Operating frequency range, MHz 470-790 Gain, dBi 7.5-9.5 The width of the days in H-plane, degrees 59÷91 Days width in E-plane, degrees 49-80 Input impedance, Ohm 75 SWR in the frequency range, not more 1.8 Polarization vertical/horizontal/inclined Mechanical characteristics Weight with mount, g 1840 Overall dimensions without mounting, m 0.3 x 0.3 x 0.12 Connector F-female The mast diameter, mm 30÷52 The emitter material, the coating galvanized steel, plastic coating Material of protective box Polycarbonate+ABS Operating temperature range, gr. Celsius -40...+60

,,, a few years ago I launched on the web such an MiMo patch antenna on PCB which through practice proved not to rise to its simulation level... And that's only because the isolation between ports was not taken into account

,,,other dimensions, another wifi-shotgun antenna...

,,, such a thing cannot be done..!!!! ,,look better on this forum...!!

,, the connection between radiator and vibrator is not visible...show it...!!!!

,,,it would be easier to build such an antenna...

,,,yes, all elements of the antenna are not isolated from the reflector..!!! ,,,yes, the cable connection is as shown in the figure...!!!

The Cifra-4 antenna is designed for receiving and amplifying DVB-T, DVB-T2 and analog TV signals in the DMV band. Antenna type: contour-slit. It is recommended for use at distances up to 1-5 km from the TV repeater.CIFRA-4-room bidirectional antenna with gain up to 4 dBi