Active and passive GPS antennas are field replaceableJeanPierre Joosting
they only increase reliability, not capacity. They are considered passive systems because theyare distributed only through parts that don’t require power such as splitters, coaxial cables and couplers. Passive DAS systems simply use donor antennas and BDAs ...
Use Com-Power horn antennas for emissions measurements and immunity testing. We offer both passive and active horn antennas and accessories for EMI testing. All of our horn antennas feature high gain and sensitivity, and our active configurations have a built-in preamp that you can connect directl...
Nokia rolls out Interleaved Passive Active Antennas for Globe Telecom across the Philippines Nokia will deploy its latest generation of Interleaved Passive Active Antennas (IPAA+) enabling Globe Telecom to rapidly expand 4G/5G coverage in the Philippines Nokia’s ...
Topology Optimization of Metamaterial-Based Electrically Small Antennas IET microwaves, antennas, and propagation, vol. 1, no. 1, pp. 116-128, 2007.R. Ziolkowski and A. Erentok, "At and below the chu limit: Passive and active broad bandwidth metamaterial-based electrically small antennas," IET...
Passive mm-wave imaging using two scanning fan-beam antennas A prototype cross-correlating 190 GHz passive mm-wave imaging system has been developed. This system is based on the Mills Cross system used for radio astr... L Yue,G Timms,G Rosolen,... - Defense & Security Symposium 被引量:...
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It is well known that active components will generate nonlinearities in systems. Various techniques have been developed to improve the performance of such devices during both the design and operational phase. It is easy to neglect that the passive devices can also introd...
For high-Q antennas, litz-wire should be used to reduce the impact of the skin effect. 5 Recommended Antenna Parameter for Long Cable Systems 5.1 Antenna Inductance To reduce the impact of the parasitic antenna cable capacitance of a long antenna cable system, it is recommended to lower the ...