name: VNA
full_form: Vector Network Analyser
context: locations should be used and (6) uncorrelated orientations per position when directive spurs are to be detected. Different test equipment set ups can be used for the acquisition of the PTF between REF TX and RX. Such as devices capable of directly extracting the PTF, like a Vector Network Analyzer (VNA) or a set up with separate transmitter and receiver test equipment, such as a Signal Generator (SG) and Spectrum/signal Analyzer (SA) configuration. In the latter case the operator should account for the losses in the set up originating from cables, mismatch, etc. When using a VNA, the REF TX ant and the measurement receive antenna (RX) are connected to the test equipment. For each location/orientation n of the REF TX ant, RC sample, and desired frequency f, the power transfer function is measured. Here, the brackets denote average value over the entire stirring sequence. The explicit dependence on RC sample and frequency is not written out here. In case of using an SG and SA the PTF is
description: A Vector Network Analyser (VNA) is an instrument used to measure the electrical properties of networks, such as impedance and scattering parameters. It is utilized in telecommunications to measure Power Delay Profiles (PDPs) in channel models for Over-the-Air (OTA) antenna configurations.
explanation: VNAs are classified as Test Equipment because they are specialized instruments designed for measuring and analyzing electrical properties of networks, a crucial aspect of telecommunications testing and characterization.
section_title: 8.3.2.1	Power Delay Profile (PDP)
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