July 25, 2022
How do I block Wi-Fi in a room for children?
In today’s society, WIFI signals are everywhere. Some people think that WIFI signals affect health, and some people think that WIFI signals make people immersed in entertainment and affect learning. In any case, there are always some people who think WIFI signal is a heinous crime. Some low radiation Individuals who use Wi-Fi Wireless routers [...]
July 5, 2022
How To Make Portable Cell Phone Jammer?
What is Portable Cell Phone Jammer? Portable Cell Phone Jammer is a type of handheld signal jammer, usually about the size of a walkie-talkie. It blocks the communication signal of the corresponding device by sending interfering signals. Very useful in some special occasions. For example, during school exams, signal jammers can block the communication signals [...]
June 30, 2022
The five best ways to stop drones.
Today, privately and commercially owned drones are almost ubiquitous and are (or will be) used for everything from photography to packaging delivery. But what if one of these drones needs to be taken down – literally? Well, there are plenty of ways to stop a pesky drone, whatever the reason for its existence. However, it [...]
June 21, 2022
What is B5 (850 MHz)?
B5 is the frequency band used by 3G signals. Deployment of LTE Band 5 is limited due to the usage of spectrum by existing 2G GSM and 3G UMTS networks, consequently the band is employed in fewer than 4% of all commercial LTE networks globally. Despite its limited adoption, greater than 31% of LTE compatible [...]
June 16, 2022
What is B1 (2100 MHz)?
Overview The 3GPP B1 (2100 MHz) LTE band is the sixth most popular band used by public mobile operators for LTE network deployments, and is typically deployed due to the existing regulatory framework in place governing 2100 MHz spectrum, as well as the ability for operators to refarm unused spectrum allotments for 4G. 2100 MHz band 1 spectrum provides [...]
What is B2 (1900 MHz)?
Overview Deployment of B2 (1900 MHz) LTE is limited due to the wide deployment of B1 (2100 MHz) with which the band partially overlaps and hence cannot be deployed alongside. Consequently Band 2 LTE represents fewer than 4% of all commercial LTE networks globally. Network deployments are generally only observed in the Americas (and external [...]
what is B3 (1800 MHz)?
Overview The majority of the world’s network operators have commercially launched LTE systems in 1800 MHz spectrum (LTE1800 – 3GPP band 3). B3 (1800 MHz) deployments represent greater than 48% of all LTE networks globally. The notable exception to which is North America where the band is not deployed due to an overlap with B2 [...]
June 15, 2022
What is the radio frequency band?
The certified spectral range of our sub-terahertz imaging cameras (50 GHz – 0.7 THz) borders with other portions of electromagnetic spectrum, and therefore it makes sense for us to describe briefly the adjacent spans and their peculiarities. The radio spectrum (also known as radio frequency or RF) is one of such parts of the electromagnetic spectrum [...]
June 14, 2022
2 Major Categories of Signals: Analog Signals vs. Digital Signals
A signals can be transmitted by electrical current or by electromagnetic waves. A signal is an electromagnetic or electrical current that carries data from one system or network to another. In electronics, a signal is often a time-varying voltage that is also an electromagnetic wave carrying information, though it can take on other forms, such [...]
June 12, 2022
What are the classifications of signals?
Today we will learn about the types of signals. Start with the following. Signals are classified into the following categories: Continuous Time and Discrete Time Signals Deterministic and Non-deterministic Signals Even and Odd Signals Periodic and Aperiodic Signals Energy and Power Signals Real and Imaginary Signals Continuous Time and Discrete Time Signals A signal is [...]
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