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Scope Of RFID Systems In Security Measures

On July 31, 2017, in Antenna, Electrode Products, by Lambert

What is RFID?

 

Radio-frequency identification device is a technology that retrieves the status and presence of a thing to which it is attached to remotely. These devices will track the objects automatically and sends the embedded information to the processors.

 

Typical components of RFID system

 

An RFID system contains an RFID tag, RFID reader, RFID antenna, and RFID package.

 

RFID tag is attached to the item that needs to be tracked and identified.

 

RFID antenna will detect the RFID tag when it comes in range.

 

RFID reader reads the RFID tags and authenticates its presence.

 

RFID package contains the server and software and transmits the information to all other applications.

 

Application of RFID systems

 

To simplify, RFID systems do the same function as of a BAR-CODES, but when it comes to applications they are widely spread as RFID systems doesn’t need to maintain contact with the scanners as in case of BAR-CODE. High Frequency RFID systems doesn’t necessarily to be appear in the line of sight, especially such are applied for livestock tracking, Missile tracking, automobile tracking through assembly lines and most importantly in case of vehicle tracking.

 

Security potential

 

Increasing security measures through CCTV cameras has already outdated, the latest technology implies to the usage of RFID readers wherever the security is needed along with authentication.

 

They can be installed in a library, home, and elsewhere domestically to secure the important files, books, and expensive things, so that even when they are found missing they can be easily detected with the help of local servers that are giving location information.

 

They can also be placed in a vehicle, thanks to their non-contact readable characteristic feature as the vehicles can be tracked along the route as they can use the location provided by the nearest GSM signal boosting towers and thus one can keep notice of their vehicles.

 

The size of the smallest developed RFID is 0.05mm × 0.05mm size and the average size would be around 3mm x 3mm. As we go cheaper the size will be increased consistently. Their dimensions make them invisible to see which a plus point in terms of security measures is.

 

Evercom Communication Technology Co., Ltd. is the professional company of specializing in kinds of antennas. If you are interested in learning more details about RFID antenna and other antennas, welcome to visit Evercom’s website to see what antennas they can offer you.

 

 

Article Source: http://EzineArticles.com/8431202

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Selecting for Right 4G LTE Antennas

On June 23, 2017, in Antenna, Telecommunication, by Lambert

Choosing the right gateway or router isn’t all there is to successful mobile networking. Signal quality is essential and this can only be guaranteed by picking the right 3G or 4G LTE antenna and solutions.

 

Selecting the right antenna

When selecting an antenna the following considerations need to be made:

 

Where will the antenna need to be situated?

If outside then the antenna will need the appropriate IP rating to ensure it is protected against dust and water. If inside then it will need to be of a suitable size.

 

What application is the antenna being used for?

Different applications require different types of antennas, for example WiFi and GPS will require their own antennas in addition to cellular antennas.

 

What environment is the antenna being placed in?

For example, vehicular or industrial locations will require an antenna that is suitably ruggedized with the appropriate fixtures.

 

What is the quality of the signal in the intended location?

If the signal quality is poor then a high gain external antenna may suit it best.

 

What frequency band are you using?

Most high quality antennas cover a wide range of frequencies, but some cheaper antennas are only suitable for one type of connectivity, e.g. 2G, 3G or 4G.

 

How visible will the antenna be?

If it is highly visible in a prominent location then it may be important that it is aesthetically suitable.

 

Where and how does the antenna need to be fixed?

Different locations require for the antenna to be attached in different places, for example on a window, wall or ceiling, and will therefore require different types of fixtures, for example screw-on, stick-on or magnetic.

 

After these questions have been addressed, the process of selecting the correct 4G LTE antenna can begin.

 

Established in 1993, Evercom Communication specializes in manufacturing 4G LTE antennas. The new next generation of in-vehicle connectivity through 4G LTE solution can be monitored and managed remotely from the cloud. For more details, welcome to visit Evercom’s website to see what 4G LTE antenna series products we can offer you!

 

 

Article Source: https://www.westbaseuk.com/news/antennas-for-4g-lte-networking-the-making-or-breaking-of-a-solution/

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WiFi Antenna: Things to Consider When Buying One

On January 6, 2017, in Antenna, by Lambert

The advancement in technology has enabled us to use a variety of gadgets, such as smartphones. Since these gadgets communicate wirelessly, the use of wireless antennas is on the rise. Whether at home or office, people find it more convenient to use devices that use WiFi antenna to communicate with each other.

 

WiFi antennas are better than traditional dipole antennas in more ways than one. The thing is that wireless antennas are capable of sending and receiving RF signals. Moreover, wireless networks work when radio transmission is sent through specific frequencies. Listening devices receive the transmitted signals. Some good examples of wireless devices are smartphones, laptops, and routers. These devices feature built-in radio signal receivers and senders. The antennas receive incoming RF signals radiating outgoing signals simultaneously.

 

Antennas found in routers can be mounted externally. However, other types of antennas are installed within the electronic devices. If you want to buy a WiFi antenna, you may want to keep a few things in mind.

 

Aesthetics

 

You can find these antennas in many different designs. Based on the design of your room, you can opt for an antenna of a specific design. The one you pick should suit your office or room.

 

Functionality

 

Different wireless antennas have different features. There are wide-band or multi-band designs. A more powerful antenna will be needed should you want a large area covered.

 

Omni-Directional

 

These powerful antennas can receive signals at 360 degrees. Typically, you can find these antennas in cell phones and WiFi routers.

 

Dipole or Directional

 

As the name implies, these antennas transmit signals in the direction they are pointed to. They have long range and can be an ideal choice if you live in an area that is far away from the place where you want to receive the signals from.

 

Yagi Antennas

 

For signal coverage from far away areas, we suggest that you go for yagi antennas. Let’s suppose you want to have WiFi available outside your house. One good option will be to install a yagi directional antenna.

 

These antennas work well for urban residents residing in quarters as they can save a lot of money. Rather than install multiple other antennas, a couple yagi antennas can do the job.

 

Cantenna

 

It’s a popular brand and refers to a do-it-yourself regular or directional antenna. You can use Cantenna antennas both indoors and outdoors.

 

Now is the time to upgrade your wireless antennas should you experience signal reception problem in your house. After analyzing the site, you may want to install a few more WiFi access points.

 

As soon as you have upgraded your WiFi antennas, you will notice that your device is working more efficiently. However, it is important to keep in mind that the role of antennas is to help with the concentration of signal. For a significant performance improvement, the radio transmitter has to be as powerful as possible. By keeping all these factors in mind, you can easily opt for the right WiFi antennas to meet your needs.

 

Founded in 1996, Cirocomm is a leading provider and designer in microwave communication components industry. We provide a large scale of passive 3C components, including dielectric resonators, dielectric filter and wifi antenna etc products. If you need more information about our wifi antennas or other antennas series, welcome to visit the website of Cirocomm to learn further details.

 

 

Article Source: http://EzineArticles.com/expert/Jovia_D’Souza/2007086

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Overview of NFC Antenna – How Does It Work and Why It isn’t Really Antenna?

On October 17, 2016, in Antenna, by Lambert

How do NFC antennas work? We will discuss that in a simple manner and try to explain why NFC antennas aren’t really antennas at all (like the dipole antenna or the Horn Antenna). But first, let’s give some background on NFC.

 

NFC Background

 

NFC stands for Near Field Communications and goes by the acronym NFC. NFC is simply a set of standards for smartphones or whatever to establish communication with each other by bringing them into close together (typically 0-5 centimeters). This set of standards is just like 802.11b or 802.11n for WIFI – it sets the protocols to send and receive information. The application of NFC include swiped proximity payments (such as Google wallet for paying at Starbucks), information exchange at small distances (for instance, touching smartphones to share contact information), and simplified setup of devices such as Wi-Fi or Bluetooth. Communication is also possible between an NFC device and an unpowered NFC chip, called a tag (as in RFID tag).

 

NFC Antennas

 

So NFC is just a method of communication between two devices at short distance. What makes the NFC antenna design simple or easy? If you know much about antennas, the first question you might ask is what the operating frequency of NFC is. It turns out that these devices operate around 13.56 MHz. The corresponding wavelength is 22 meters long – this means to get a nice half-wave dipole antenna (that radiates well) we would need a device about 11 meters in length.

 

Now, clearly we have NFC antennas on smartphones or there would be no Google Wallet, for instance. So the challenge in NFC antenna design is to obtain a “radiating” structure when the NFC antenna area may be limited to 3″x1″ (or 7 cm * 2.5 cm). Hence, we are talking about fitting an antenna into a volume where the maximum linear dimension is about 0.5% or less of a wavelength. And from antenna theory, we know that you won’t get any radiation out of such a small device.

 

To sum up the discussion so far: NFC antennas operate at low frequency (large wavelengths) on small devices. A consequence of this is that the radiation efficiency of an NFC antenna will be about 0. So how then do they work?

 

You may recall from your electric circuits classes that inductors can be made to couple together – that is, there exists mutual coupling. If the magnetic fields from one inductor pass near another inductor, an induced current will exist within the second inductor. This is contactless energy transfer – exactly what NFC requires.

 

Hence, an NFC antenna isn’t an antenna at all – it is really just a big inductor. In general, the larger the inductance of the antenna can be made, the better it will perform. Note that this doesn’t mean you can place a very small chip inductor as your NFC antenna – the magnetic fields on these inductors are tightly wound and don’t extend much beyond the chips themselves. Rather, a good NFC antenna is as large of a wrapped coil of wire as possible. Recall that a loop of wire around a material gives a strong magnetic field within the loop (and generally the more turns you have the more inductance you create). Hence, NFC antennas are often simply loops of wire, occupying as much surface area as the device allows.

 

One final note related to NFC antenna design. We’ve already stated that the larger the surface area, the better performing your NFC antenna will be. We haven’t mentioned anything about volume. Can the NFC antenna be infinitely thin? The answer is yes – if there is no metal or conductive material around the NFC antenna. If you know much about electromagnetics, you will know that a ground plane directly beneath magnetic or electric fields will very much degrade them. Hence, performance degrades for the NFC inductor style antenna when placed near a metallic surface. As a result, for performance the height of the NFC loop will need maximized. If the space is near zero, the performance will suffer.

 

One small trick to get around this is to use high permeability sheets (ferrite, iron based, whatever) between the NFC antenna and the metallic ground plane. This serves to concentrate the magnetic fields, effectively making them think the distance is larger between the NFC antenna and the ground plane. This helps to alleviate the height problem, but does not eliminate it.

 

This concludes our discussion of NFC antennas and some of the basics in NFC antenna design. As you can see, this is a very atypical antenna, and really I don’t classify it as an antenna at all.

 

If you are interested and need further details about NFC antenna, welcome to visit our website and feel free to contact CIROCOMM – the various high quality antennas manufacturer.

 

Article Source: http://www.antenna-theory.com/definitions/nfc-antenna.php

 

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Type of Wifi Antenna

On May 16, 2016, in Antenna, by Lambert

When deciding to deploy a Wireless LAN (WLAN) solution within a building or facility, there are many factors to consider. The first most obvious consideration is the radio or RF coverage required within the facility, the size and design of the facility will determine the number of wireless access points required to provide that coverage. Another consideration will be selection of the appropriate wireless antennas to provide the desired coverage.

 

Before we get into a description of different types of wifi antenna, how much gain they produce and what type of radiation pattern they typically provide, I must stress that when deploying a wireless LAN for the first time, it is very important to have a wireless site survey conducted to determine the siting of the access points and also highlight any problem areas where specialist wireless antennas may be required.

 

A Wireless Antenna will normally be designed to work efficiently over a narrow band of frequencies, the wider the range of frequencies the antenna will operate over, the more “Broadband” the antenna is said to be. Wifi antennas will operate either in the 2.4Ghz ISM band or the 5Ghz band, so the antenna must be designed to operate within those specific frequency ranges.

 

Let’s take a look at some of the antenna types available and how they typically perform:

Omni-Directional Antennas

This type of Antenna, as previously stated normally produces an isotropic radiation pattern that is often referred to as a “Doughnut” shape. It is worth bearing in mind that true isotropic antennas tend to be purely theoretical and other types of omni-directional antennas are compared to that of an isotropic design.

 

Vertical Omni

A vertical omi-directional antenna is usually based on a dipole design where the radiation pattern of a dipole antenna is 360 degrees in the horizontal plane, with the vertical plane varying depending on whether the dipole is vertical or not. A vertically orientated dipole antenna normally has a 75 degree radiation pattern. Dipole antennas are normally said to have a gain, on average of a little over 2Db.

 

Ceiling domes

These antennas are designed to be mounted on the ceiling, above false ceilings or even on walls. Because of their less obstructed view, they tend to have a higher gain of around 3Db.

 

Rubber Ducks

Rubber duck wireless antennas were first used with early walkie talkies as a cut down whip aerial designed at one quarter wavelength. Because of this they are termed electrically short antennas, usually having a wire type element covered with a rubber sheathing, making them flexible and robust. They are vertically mounted and have a 360 degree radiation pattern similar to that of a half-wave dipole. These are the antennas that you see on most mass produced wireless routers for the home market.

 

Directional Antennas

Reflecting and radiating elements are added to the standard di-pole design to concentrate the signal energy in a specific direction. Directional antennas can give a gain over the standard isotropic antenna of between around 3dB as much as 20Db.

 

Yagi

Yagi antennas are referred to as high gain antennas and have multiple reflector and radiating elements to give a typical gain of between 12 and 20dB. They are often used as outdoor antennas and will have a typical horizontal beamwidth of around 30 degrees and 15-25 degrees vertical beamwidth.

 

Dish

The most common type of dish Wireless Antenna is the parabolic dish, which uses a curved parabola shaped dish to direct the wireless radio waves to a narrow beamwidth. These type of antennas are extremely highly directive and can also have extremely high gain, as much as 40 or 50dB. One of the design factors is that the dish will be larger than the wavelength of the design radio frequency. Most often used for point to point wireless communications links. Outdoor wireless bridges will often use a Parabolic Dish Antenna.

 

Patch Antenna

You will often find Patch Antennas deployed in office type environments, normally attached high up on a wall, or sometimes ceiling mounted. Typical horizontal beamwidth is around 70-80 degrees, but this can extend to around 100 degrees. Construction is normally a pair of metal plates that are actually the antenna elements, which together make up the transmission line. They are normally of half-wavelength design, with typical gain being around 2dB, similar to a traditional dipole antenna.

 

Of course, there are many other variations of wifi antenna which have not had a mention here, but this article was designed to give the layman a simple explanation of basic Wireless Antenna types.

 

Following a successful Wireless Site Survey, the majority of access points in anything but the smallest office environment will normally employ dome antennas or vertical dipoles. Problem areas may be better served by Patch or Sector wireless antennas to maximise the coverage area. To obtain more information about wifi antenna, please feel free to contact us!

 

 

Article Source: http://EzineArticles.com/6852507

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Marine Safety and Electronics

On July 23, 2015, in Antenna, by Lambert

Taking your boat out in the sea or lake with friends is always fun. The best way to make sure that your boat trip is comfortable and a success is to put safety first. Often, this means that you need to have, in addition to your life vests, your marine electronics in good working order.

One of the more important pieces of marine equipment boaters have these days is their GPS. A GPS can track your course, your distance from the shore, and your exact location, especially important in case you need help out at sea.

A quality marine antenna is also an essential safety component for your boat trip.

When you’re far out to sea, marine antennas allow you to boost your cell phone signal so you can make contact with land.

Want to learn more about top-quality marine antenna?

Having a marine generator is useful for powering many of the electronics avid boaters are used to, without straining the boat’s battery. A generator can power lights, radars and other small appliances. A marine generator is essential as backup for powering all of your needed marine electronics.

Properly charged batteries will prevent overuse of a marine generator. This means that a top-quality battery charger is essential boat equipment for maximizing battery longevity and durability.

There are other marine electronics such as satellite phones, televisions, fish finders and depth sounders that will make for a more enjoyable excursion, but are not necessarily essential for safety.

Quality marine electronics, proper boating instruments and their support systems are important for a comfortable and safe boat trip.

Want to learn more about top-quality marine electronics? MarineWholesales.com has all the leading brands of discount marine electronics for yachting, boating and fishing.

Article Source: http://EzineArticles.com/?expert=Den_Harper

Article Source: http://EzineArticles.com/2834076

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Marine Antennas of BJNAV with special design

On April 18, 2014, in Antenna, by Lambert

BJTEK Navigation, INC. Emphatically to the GPS satellite positioning navigation correlation product research and development production, may depend on the customer demand to give the OEM/ODM service, at present has produced the ship with/the vehicle with the GPS antenna and the receiver, the GPS antenna module and the receiver module, the GPS/GSM/3G antenna, GPS receiver, outside various types GSM meets the antenna and in constructs the type GSM/GPRS antenna module design,the BTGPS data logger, GPS/GMS/GPRS tracker, GPS automobile navigation, bluetooth GPS receiver, GPS satellite clock, the ship uses the VHF/UHF antenna, GPS/VHF with/the vehicle the double frequency antenna and 2.4G/5.8G antenna and each kind of high frequency coaxial cable line and the attachment designs Che Chih and so on.

BJTEK has specialized in producing marine antennas over 20 years experience. All of our  marine antennas  are a complete combine with high security quality; sustained innovation; and advanced technology. BJNAV navigation is one of leader antennas maker in Taiwan; especially marine antenna mount applications.

Our product is designed for the vessels mast that require long extra cables without signal constraint to the GPS receivers. The VHF marine antenna is not only hidden in a durable and waterproof cover; but also cable is protected by a base which can prevent damage. The special design for marine antennas are really delicate; compact and reliable. Besides that have concinnity and compacted design for base. It is the integration of the high performance GPS patch antenna and a low noise amplifier into an extremely fully waterproof enclosure and when connected to a GPS receiver with 2.5 to 5.5V DC antenna power; it can provide excellent antennas signal amplification and out-band filtering with rejection for that receiver at 2.5V DC or 5.5V DC input voltage. We can supplies satisfy customer’s require marine antennas shape; material; color and logo available. We provide the best antennas with high quality and competitive price.

 

Marine Antennas Series:

GPS Marine Antennas

GPS Marine Antennas

 

GPS Receiver Marine Antennas

GPS Receiver Marine Antennas

 

GSM Marine Antennas

GSM Marine Antennas

 

GPS/VHF Combo Marine Antennas

GPS/VHF Combo Marine Antennas

 

Marine Base Mounting

Marine Base Mounting

 

Marine GPS/GLONASS Antenna

Marine GPS/GLONASS Antenna

 

Marine XM Antenna

Marine XM Antenna

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Marine Antenna Products of BJNAV – A Leading Marine Antenna Manufacturer

On April 17, 2014, in Antenna, by Lambert

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BJTEK antenna manufacturer is one of leader antenna manufacturers in Taiwan. BJTEK correlation personnel invests the antenna industry from 1998 until now to accumulate the quite long time and the experience. The company is a professional antenna manufacturer. Provide a variety of state-of-the-art antenna and marine antenna, excellent signal amplification and out-band filtering & rejection. Our antenna products are sold to places all over the worldwide. We are also constantly innovating new products and incorporating the latest trends and designs into our product lines to keep up with the ever changing needs of our clients.

BJTEK antenna manufacturer has produced the maritime and vehicle with the GPS antenna and the receiver, GPS antennas module and receiver module, GPS/GSM/3G antenna receiver, GPS/GMS/GPRS tracker, outside various types GSM meets the antenna and in constructs the type GSM/GPRS antenna module design, GPS receiver, GPS automobile navigation, GPS satellite clock, ship uses the VHF/UHF antenna, GPS/VHF vehicle the double frequency antenna, 2.4G/5.8G antenna, high frequency coaxial cable line, the attachment designs and so on. BJTEK emphatically to the GPS satellite positioning navigation correlation product research and development production, may depend on the customer demand to give the OEM/ODM service.

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Evercom Provides Mobile Antennas

On October 3, 2011, in Antenna, by Lambert

Evercom is one of leading manufacturers and suppliers of mobile antennas. The mobile antennas contain GSM antenna, CB antenna mount, WiMax antenna, RFID antenna, GPS antenna, DVB-T antenna, VHF/UHF antenna, connectors, amplifiers and accessories. It is dedicated to providing innovative design, quality manufacturing and reliable performance. All mobile antennas are manufactured in Taiwan. Its steady growth of sales performance is based on R&D design capability, advanced testing equipment, well experience production staffs, strict quality control, and excellent after-sales service. If you are interested in the products, please feel free to contact Evercom.

Magnetic Antenna

Magnetic Antenna

EVERCOM COMMUNICATION TECHNOLOGY CO., LTD
NO, 108 JIESIN STREET TAOYUAN CITY 33063, TAIWAN, R.O.C
Tel: +886-3-376-5678
Fax: +886-3-376-5319
E-mail: service@evercomtech.com
Website: www.evercom.com.tw

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APM Has Unrivalled Skill in RF Amplifier

On January 25, 2010, in Antenna, Global Positioning System, Wireless Equipment, by Lambert
RF Amplifier

RF Amplifier

APM Antennas Manufacturer predominantly produces RF amplifiers, wireless access points, GPS tracking system, IP camera, etc. As the sole company in Taiwan manufacturing dual-band and broad-band outdoor wireless antennas, we host the talent and hardware essential for your audio needs. With 30 years of international trading experience and our R&D department which with over a decade of experience produces three new products every season. Over and above all our missions are roviding good quality products and offring compelet service to our customers. Visit APM’s official site for more information.

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