These very useful and functional devices make it possible for you to connect your computer to the Internet at a relatively good speed if you are living in a rural area where cable and DSL services aren’t available. But you need to ensure that you get a good cell signal to be able to use the broadband card properly. For people who frequently travel, mobile broadband is a reliable friend. Some people can even use the broadband card while travelling or on the road.

If you are searching for the best broadband cards 2012 in the market, try checking out several models to help you decide on the matter.

598U from Sierra Wireless (USB Modem)
A two-in-one device that you can plug into your personal computer or laptop’s USB port. This has a microSD slot that creates a storage drive as well as a wireless high-speed access device. This is one of the broadband cards 2012 that is easy to install and GPS enabled. 598U is also e-mail and webmail capable and has a memory card slot.

Sprint 3G/4G USB Modem 250U (from Sierra Wireless)
This device connects your netbook, laptop or personal computer through a rotating USB to maximize any spot that offers wireless Internet. You can participate in web conferences, check your e-mail or download materials wherever you are. It also offers you up to 10x faster access to 4G than 3G. It is GPS navigation-enabled and has web browsing capabilities. You can also use this modem for checking and sending e-mails.

Overdrive Pro 3G/4G Mobile Hotspot (from Sierra Wireless)
Deemed as the mobile broadband gadget of the next generation, the Overdrive Pro 3G/4G delivers a great wireless experience sans the software installation or the cables. You can easily connect up to eight wi-fi capable devices such as laptops, gaming consoles and eReaders to the Internet. This offers you 4G access that is 10x faster than 3G but it also has 3G connectivity.

MiFi 3G/4G Mobile Hotspot (from Novatel Wireless)
Allows you to take your hotspot with you anywhere you go, anytime of the day. You can get Internet access in an instant and use your wi-fi enabled gadgets. This is GPS-enabled and is also capable of web browsing.

Apart from the ones mentioned above, there are others models of broadband cards 2012 available today. Take time to do your research and scour the internet to find the model of broadband card that suits you the best.

Right now, the newest method to connect your mobile device to the Internet is through the use of wireless card for ipad. Aircards make this possible by using a router to make a wi-fi connection for your iPad. You can select from several modems which use 3G mobile connection to use with your device.

Here is a list of some good modems that you can use:

1. Zoom 450 3G Travel Router- Plug the USB aircard on this router and get a free wi-fi connection for your personal computer or iPad. This operates on rechargeable batteries.
2. Cradlepoint 3g ctr350 Mobile Router- An easy to use modem where you can plug your aircard and then this automatically recognizes the device to create a wi-fi hotspot.
3. Dlink dir-457 3g MyPocket- A portable router for getting 3G wireless access 802.11 g b/n network. It boasts of its ability to accommodate up to 16 people wirelessly and simultaneously.
4. Cradlepoint 3g-4g phs300- This modem supports a number of USB aircards like Sierra Wireless Compass 597U, Sierra Wireless 595U, Sierra Wireless Compass 598U and express aircards like Novatel C777, Sierra Wireless Aircard 402 and Sierra Wireless 597E. This is slightly more expensive than the other modems but you can be assured to have a good battery life.

At present, the iPad comes with built-in aircard wireless connectivity. Since it is a device that was designed to become the most portable gadget out there, you must not confine your usage only in your home. With the aid of a wireless card for ipad, you can use it wherever you go. Make the most out of the wi-fi technology and the ever increasing number of wireless ports.

Apple has locked down the iPhone, hence, numerous amazing applications that uses wireless connectivity are set to be carried on with the iPad. At the same time, new applications are currently being developed especially for the particular gadget. Since there is a prediction that more business-oriented apps will be included in the iPad, more people would want to link their device to a wireless connection and to other devices related to business.

Along with the iPad, several other great accessories, apart from the wireless card for ipad, are rolled out for the consumers. The future looks very promising for the wireless Internet technology because trends will rely on it heavily. Expect more devices to support wireless connection not just for ipad but for other devices as well.

The new networks are divided into two main technologies: WiMAX and Long TermEvolution (LTE). The two systems use similar approaches to supply the availability of bandwidth than the current one. A method called OFDM (Orthogonal frequency-division multiplexing) allows a base station to split a portion of spectrum in sub-channels. The signal strength of the subchannels and the number of channels allocated to different devices can be changed. OFDM allows highspeed data transmission, even far away from the base station, and fits well with all types of radio interference present in urban areas, where the signals reflected on the walls produce confusing echoes.

Both LTE and WiMax are based on the MIMO method (multiple input, multiple output). It uses multiple antennas to create a single wireless connection. MIMO can package the data with a higher density in the wireless spectrum available than a system with a single antenna, which consumes the same amount of energy.

WiMax has arrived on the market two years before LTE; it offers a theoretical maximum download speed of 144 megabits per second compared to the 360 ​​of LTE (the United States a standard residential broadband connection is around 10 megabits per second ). LTE seems to have an overwhelming speed advantage, but in reality wireless mobile companies are far from reaching that performance of both technologies. In the U.S., Sprint’s WiMax network reach speeds between 3 and 6 megabits per second, while Verizon’s LTE network is between 5 and 12 megabits per second.

Although Sprint and Verizon have them labeled as 4G, these services do not actually meet the performance criteria that the ITU (International Telecommunication Union) has called officially for 4G services. But the latest version of WiMax and LTE are trying to meet these standards, guaranteeing download speed up to 1,000 megabits per second or even higher.

Although WiMax has been developed more quickly (the first large-scale deployment dates back to 2008) most operators in the U.S., Europe and Japan are using LTE for next-generation wireless networks. The main reason is that they assume that LTE network is technically easier to integrate with their existing structures.

But some suppliers, such as T-Mobile in the United States to upgrade their existing 3G networks, they prefer a system called HSPA+. T-Mobile claims that HSPA+ enables peak download speeds of 21 megabits per second, enough to compete with next-generation networks, at least for now.

At present all the network operators are committed to enhancing the capacity and flexibility of their 3G networks. Over the next four years, when the next generation systems will be developed and 3G chips will become cheap enough to make their appearance in a wide range of consumer products, these systems will attract more subscribers of the LTE network.

The biggest obstacle to the improvement of these systems comes from the wired network, not from the wireless. The cell towers and base stations must be connected to the same network hub. These links from one point to another, which typically use copper telephone wires or special connections or microwave, in recent years have become real bottleneck, forcing operators to adopt the more expensive fiber connections.

About 95 percent of the new Verizon LTE data network will be over fiber. But dig into the streets to lay fiber optic cable in densely populated areas can be expensive. For this reason, AT&T is committed to improving its 3G service in New York, which must withstand the impact of thousands of iPhone users.

The new antenna presented in London this year could be reduced 100 times the energy consumption of mobile communications if it’s used in multiples of one hundred. In practice, replacing a single tower with hundreds of small transmitters, it would consume only 1% greater energy required from the antenna to get the same quality of service. But this is only the beginning.

The aim of the consortium, founded a year ago at the initiative of the legendary Bell Labs-Lucent Aleatel and now part of a forty public and private research centers, is to introduce by 2015 a series of “key elements” that can increase dramatically the efficiency of communications networks.

It’s an ambitious goal but not impossible to achieve. GreenTouch collects the best of global know-how, laboratories of private companies, even competitors – such as Huawei, Samsung. Swisscom and Telefonica and public research, such as that conducted by the University of Cambridge and the Tsinghua University.

All over the world the users of mobile phones are growing, data and video application’s explosion are generating an unprecedented wave of data traffic. The transport of large quantities of bits are now the rule even in mobile networks and then on the radio link with a data traffic doubles every year. In the near future additional scenarios are making big changes: Cloud computing with the distribution of users, applications, data, computing resources and storage. Without radical action mobile phone energy consumption will become a problem.

At present there is no real uniform radio mesh. This will waste a lot of energy, which would be saved if the networks were more homogeneous.

Often also called “wi-fi range extender” or with other similar names, the wi-fi repeaters have a major limitation: having to use the radio equipment for both communicating with the main access point and for extending wireless signal to the client, the available overall wireless bandwidth will be halved.

In the case of an 802.11g wifi network, for example, the theoretical 54 Mbps down to 27 Mbps and, in turn, the actual throughput is halved. These are solutions that improve wireless coverage, but decrease the speed. In addition to the stand-alone devices developed specifically for this purpose, the repeater function can also be performed by a traditional access point, not all access points on the market are able to operate in repeater mode, and this feature is not always well marked in technical specifications of the product. Before to buy an access point or router, check that the repeater mode network is supported.

Install a wi-fi repeater is a simple operation. First, it is important to choose the most appropriate point for the placement of the device: it does not require a wired connection to the network, so you will have a fair amount of freedom in the choice of location. Typically, the wireless repeater is located in an area with coverage limits of the original access point signal, so to maximize the signal range. Pay attentio to do not exceed: the signal received by the repeater must still be of good quality to avoid reducing the speed of connection.

Try also to extend wifi range with Wireless Distribution System (WDS).

But, as it is very annoying to lose the Internet connection when we are working, the TL-MR3220 integrates the 3G/WAN failover function, which allows you to choose whether to give priority to the Wan(DSL) or 3G mobile connection. The router will automatically switch to wireless connection with secondary priority when the primary signal is weak.
Once the service is restored, router will back to the connection with higher priority, this will keep “always-on” Internet connection.

TP-Link presented also the Access Point TL-WA701ND that allows you to connect to the wireless network gaming consoles, printers,external hard drives, smartphones, iPad, iPhone. It integrates “repeater” function with WDS (Wireless Distribution Service , see how to extend coverage of wireless home network with WDS) technology that improves the strength of wi-fi network coverage in large environments. What makes the TL-WA701ND very simple in its setup is the Quick Secure Setup (QSS) function that allows you to establish a wireless connection protected by a password simply touching a button.