-
Cellular Distributed Antenna Systems (DAS)
Sep , 17 2020
How A DAS Works A DAS is a network of antennas that sends and receives cellular signals on a carrier’s licensed frequencies, thereby improving voice and data connectivity for end users. In its most simplified form, a DAS has two basic components: 1 - A signal source A Distributed Antenna System, as the name implies, “distributes” signal. But it generally doesn’t generate the cellular signal itself...
View more
-
What is active DAS?
Nov , 07 2020
Active DAS An active DAS converts the analog radio frequency transmissions from the signal source to a digital signal for distribution. A master unit performs this analog-to- digital conversion. The master unit may digitize the signal from a single carrier or multiple carriers. Once converted, the DAS transmits the digital signal over fiber optic or Ethernet cables to remote radio units (RRUs) tha...
View more
-
Public Safety Distributed Antenna System (PS DAS)
Jan , 09 2021
A Public Safety Communications system is a wireless communications system used by first responder and emergency services personnel such as police, fire, emergency medical, homeland security, and disaster response agencies to prevent or respond to incidents or situations that pose a threat to people or property. Bands of frequencies, especially in the VHF and UHF parts of the spectrum, were allocat...
View more
-
What is the indoor distribution system?
Sep , 10 2021
What is the indoor distribution system? Indoor distribution system is used to cover the indoor blind area of the system, the signal into the indoor through indoor installation of antennas, feeders, power dividers, couplers and other devices to achieve the purpose of coverage Indoor distribution system is a successful scheme for indoor user groups to improve the mobile communication environment in ...
View more
-
Wireless Communications in Public Safety
Oct , 16 2021
With growing concern for public safety globally, the need for reliable wireless network availability is critical. First responders，police and fire must have access to the network for vital emergency communications. It is very important for the property and personal safety of them and citizens.And citizens need to contact authorities when they are in emergency situations. Therefore to provide...
View more
-
' smart brains' guaranteed the communication system for Beijing Winter Olympics
Feb , 12 2022
The 2022 Beijing Winter Olympic Games is coming, stable network communication is an essential element to ensure the smooth running of sports events, but the overall network complexity of the event is quite high, and the network operation and maintenance of the Winter Olympic Games are facing considerable challenges. China Unicom Winter Olympics Communications Operation Command Center (TTOC) is ful...
View more
-
Labor Day
Apr , 29 2022
In oredr to celebrate the Labor Day,we will have three-day holidays,from 30th,April to 2nd,May.On returning from the holiday,we will delivery goods according to scheduled date. With the coming of 1st May,people all over the wold will celebrate Labor Day,however do you know the history of Labor Day?Do you know why we celebrate Labor Day? And do you know why it is called Labor Day or why May 1...
View more
-
radio frequency combiner
Sep , 12 2022
The circuit breaker is generally used at the transmitter. It combines two or more radio signals sent from different transmitters into an RF device transmitted by the antenna. At the same time, the interaction between signals at different ports is avoided. A circuit breaker typically has two or more input ports and only one output port.Port isolation is an important indicator that describes the cap...
View more
