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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...
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Low PIM 5G RF Directional Coupler
Nov , 13 2020
1.2 Appearance of accessories Low PIM 5G RF Directional Coupler Figure 2 The coupler is distributed in the indoor system 1.4 Main application of directional coupler 1. Signal injection 2. Adjustment of signal generator; 3. Monitoring of power flow; 4. Measure incident power and reflected power to determine standing wave ratio; 5. Signal sampling; directional coupler (derives the downlink sign...
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Distributed antenna system
Nov , 26 2020
A distributed antenna system, or DAS, is a network of spatially separated antenna nodes connected to a common source via a transport medium that provides wireless service within a geographic area or structure.DAS antenna elevations are generally at or below the clutter level, and node installations are compact. Adistributed antennasystem may be deployed indoors (an iDAS) or outdoors (an ...
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What is Hybrid DAS?
Dec , 12 2020
A hybrid DAS A hybrid DAS combines characteristics of passive parts(including RF antenna, directional coupler, power divider,hybrid coupler)and active systems. The RRUs are separate from the antennas, allowing the system to use both fiber optic cable a configuration includes an RRU on each floor that converts from the digital signal to analog RF. The analog RF signal is then connected to multiple ...
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Coverage vs Capacity
Jan , 23 2021
Coverage vs Capacity To be able to compare the different technologies, we need to review the two main performance reasons that DAS solutions are deployed: to provide coverage and capacity. Some locations experience significantly more cellular data usage than others. Think of a sports stadium hosting the Super Bowl, or a large music venue hosting Justin Timberlake. If the venue relied on a ne...
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POWER SPLITTER – RESISTIVE, REACTION, AND WILKINSON
Mar , 01 2021
Power splitter, also widely known as Power Divider, is a device that divides a radio frequency microwave input signal into any number of output signals and while doing so, it maintains the characteristic impedance of the input. They are widely used in labs, radar and communication systems and test instrumentation etc. They are categorized broadly into two- Resistive and Reactive. Resistive Power S...
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BASE STATION antenna-sector antenna
Mar , 20 2021
As known that inbuilding solution wireless coverage will use omni ceiling antenna, directional coupler, 3dB hybrid coupler, power divider splitter and panel directional antenna. and where is this original signal from? There the base station comes, and one kind antenna is used very frequencly at base station. In the engineering design of mobile communication network, the base station an...
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RF passive components to Turkey
Apr , 24 2021
One of our Turkey customer ordered 400pcs 4 in 4 out hybrid coupler , 2000pcs 2 way power splitter, 1000pcs 4 way power splitter. 800pcs directional couplers , and also rf coax connectors, 2 and half weeks ago. Today, all pacakge are shipped out from our factory. this shipment will via ocean, because recenetly air freight cost increase much. In order to save customer shipping cost, after the...
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