The Interleaved Passive Active Antenna (IPAA) for 5G is an antenna developed by Nokia and CommScope that also supports legacy cellular technologies like 4G, 3G and 2G scattered over a variety of frequency bands. It combines Nokia's mMIMO radio technology and CommScope’s passive antenna technolog...
In an active DAS, the RF signal is converted to another signal type for transmitting to the second antenna and converted back to RF. Typically, fiber optic or ethernet are used for the cable runs. Active DAS components are more expensive to purchase and maintain. However, the fiber oretherne...
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The passive devices have unloaded interfaces. The STA is far away from the AP's antennas, so the signal loss is large. Signals are blocked by a beam, post, concrete wall, metal door, or other obstacles between the STA and antennas. In this case, change the ant...
A DAS can be either passive or active. A passive DAS simply takes wireless signals from an antenna and then runs them through “leaky” feeder cables that act as antennas all over the building; the signal leakage distributes the signals. An active DAS takes the wireless signals from an exte...
An NFC tag chip is a passive device: embedded in an antenna, it is powered by the magnetic field generated by the NFC reader (for example, a smartphone). An NFC tag responds tospecific NFC instructions. For instance, it can reply to an instruction such as “Read command” by displaying...
passive active semi-active The basic components of any RFID transponders are a microchip and an antenna (usually in the shape of a coil). The microchip of a standard transponder offers a storage capacity from a few bits up to several kilobytes, based on the design. Depending on the ve...
This is going to be difficult for all but the most technically advanced. The board features all surface mounted components, with 4 QFNs, a few SOT-363s and tightly spaced 0603 passives. The antenna switch on board 11.3.0 is about 0.8 x 1 mm and you'll need a microscope to align it...
RFID tags can be passive, and therefore powered by the reader, or active, and therefore powered by a battery. Special Considerations The technology is not without controversy. Due to the nature of how these devices work it is not inconceivable that someone who is not supposed to access the ...