A 0.01-18 GHz Wide Dynamic Range Precision Vector Ratio Meter

A dual channel complex vector ratio meter has a greatly improved dynamic range and higher accuracy than presently available Attenuator Calibrators or Network Analyzers. State-of-the-art performance is achieved through the application of a new Parallel IF Vector Substitution principle. It produces measurements in digital form over a 100 dB single step dynamic and display range, has 0.001 dB and 0.01/spl degree/ resolutions for a frequency range 10 MHz to 18 GHz.