Read this P&C report on May 13 published by National Operation Council (MAGERAN) This is the true independent version based on reports by multi-racial security officers. Unless one would rat…Full description
Version: 2.0.0 Release Date: Oct 28, 2017
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Nokia Multiantenna White Paper
This paper introduces why social media information should be integrated with your internal systems and also how easy it is to integrate Facebook data into your systems and database.
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Version: 2.0.0 Release Date: Oct 28, 2017Full description
Descripción: libro de marketing web
tZERO understands that regulation in the crypto-world is inevitable and we are working to develop a scalable and stable securities token trading platform that, when operational, will be fully compl...
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32 page white paper that lays out the story of Russia's interference with the US elections and the connections to President Trump, his campaign, and his administration.
White Paper on Spectrum
WHITE PAPER Page 12
T h e
Current Site
700 AWS
X
X
X
X
X
X
1900
1900
UMTS 850
TMA 850
1900
Diplexer 850
1900
GSM 1900
®
700 Overlay 850 1900
Diplexer 850
C h o i c e
850 1900
TMA 850
C l e a r
TMA 850
1900
TMA 850
Diplexer 850
1900
UMTS 850
1900
Diplexer 850
1900
GSM 1900
TMA 700
AWS
Diplexer 700
AWS
LTE 700
TMA 700
AWS
Diplexer 700
AWS
AWS 1700-2100
Please Note: All frequencies defined in MHz. AWS defined as 1700-2100 MHz.
Figure 7 Possible co-located sector configuration
For the addition of LTE at 700 MHz, existing antennas will need to be swapped out for dual-polarized, wide-band antennas capable of operation at 700 MHz and 850 MHz (i.e. 698 to 896 MHz), and multiband antennas featuring single antenna modules (i.e. multiple elements) and capable of serving both the low-band (698-894 MHz) and the high-band (1720-2200 MHz). By moving two bands (either lower or higher) onto a single antenna, an additional antenna can be added to the cell tower without increasing the antenna count. The same can be achieved with transmission line using cross-band couplers. For example, a low-weight 700/850 MHz cross-band coupler can be deployed at the top and bottom of the cell tower – to split and mix the signals respectively – to enable feeder sharing between bands/systems. The cross-band coupler can also incorporate a highly selective filter to provide a high level of isolation between ports, while keeping insertion loss in both paths to a minimum. Cross-band couplers and TMAs are available in dual-band formats covering multiple combinations of 700 MHz, 850 MHz, PCS and AWS bands. As shown in Figure 6, one possible site configuration is where two 850 MHz, vertically-polarized antennas are replaced by a single, dual-
WIRELESS | MOBILE RADIO | MICROWAVE | IN-TUNNEL | IN-BUILDING | TV & RADIO | HF & DEFENSE
