Understanding VNAs - Antenna Measurements
This video provides a short technical introduction to antenna impedance measurements using a vector network analyzer.
Understanding the Smith Chart: • Understanding the Smith Chart
Understanding S Parameters: • Understanding S Parameters
Understanding VSWR and Return Loss: • Understanding VSWR and Return Loss
Download a Rohde & Schwarz VNA Fundamentals primer: http://rsna.us/6050l9AgC
Learn more about Network Analyzers from Rohde & Schwarz: http://rsna.us/6051l9Agh
Timeline:
00:00 Introduction
00:13 Suggested viewing
00:31 About antennas
01:28 About antenna measurements
02:31 Vector network analyzers (VNA)
03:36 Connecting to the antenna
04:31 Configuring the analyzer
05:40 Performing calibration
06:43 Connecting calibration standards for antenna measurements
07:09 Antenna impedance measurement formats
07:28 Standing wave ratio (SWR)
08:18 Measurement example: SWR
08:47 Measurement example: antenna bandwidth from SWR
09:24 Return loss
10:12 Measurement example: return loss
10:45 Complex impedance
11:26 Smith Chart
12:17 Measurement example: Smith chart
12:59 Summary