name: CLTA
full_form: Co-Location Test Antenna
context: In the following, a practical version of the Free Space VSWR method is presented [73]. In the Free Space VSWR method the quality of quite zone is measured from amplitude ripple caused by reflections inside the anechoic chamber. Phase variation of the direct signal and the reflected signals is obtained by moving a field-probe in the quiet zone. Amplitude ripple in the quiet zone is caused by this phase variation of reflected signals and the direct signal from antenna. The figure F.1 below shows seven measuring positions. Figure F.1: Measurement positions with 150mm separation In each of the seven-measurement position amplitude of power received by field-probe [dBm] is measured where is index of measuring position. Variance of measurement distance to the antenna from field-probe in different measurement positions can be compensated by following equation: where, (2) is distance to point from the antenna, is distance to centre of quiet zone from the antenna is uncorrected measurement value
description: The Co-Location Test Antenna (CLTA) is a standardized antenna used for testing co-location scenarios in Active Antenna Systems (AAS) Base Stations (BS). It has specific characteristics, such as vertical radiating dimension, frequency range, polarization, and beamwidth, which are defined to ensure consistent testing conditions. The CLTA is used to simulate real-world co-location scenarios and to evaluate the performance of AAS BS in these scenarios.
explanation: The context provided describes the Co-Location Test Antenna (CLTA) as a specific type of antenna with well-defined characteristics, which is used for testing purposes in AAS BS. Since CLTA does not fit into any of the predefined categories such as Protocol, Network Function, Interface, etc., it is classified under Miscellaneous.
section_title: 5.1.2.2.2	Co-location test antenna
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