The Agilent 8720ES is a two-port S-parameter network analyzer operating from 50 MHz to 20 GHz, delivering fast, accurate characterization of RF and microwave components across magnitude, phase, group delay, and reflection/transmission parameters. Built around an integrated synthesized source, test set, and tuned receiver, it eliminates the need for external instrumentation while maintaining 100 dB dynamic range (up to 105 dB) and typical frequency stability of 10 ppm. The analyzer supports two independent measurement channels with four independent display channels, enabling simultaneous capture of forward and reverse S-parameters (S11, S21, S12, S22) and derived quantities including impedance, admittance, and SWR across Cartesian, Smith chart, and polar display formats.
Technical Specifications
• Frequency Range: 50 MHz to 20 GHz
• Impedance: 50 ohms nominal
• Connectors: NMD 3.5 male; 3.5 mm precision connectors on 8719/20ET and 8719/20ES models
• Dynamic Range: 100 dB typical (up to 105 dB)
• Measurement Channels: 2 independent
• Display Channels: 4 independent
• Source Type: Integrated synthesized source
• Source Modes: Swept or stepped
• Frequency Stability & Accuracy: 10 ppm typical
• Source Output Power: Wide range with 55 dB step attenuator (ES models)
• Test Set: S-parameter test set for full forward and reverse magnitude and phase measurements
– Key Features
• Four independent display channels for simultaneous multi-parameter monitoring
• Full two-port, adapter-removal, and optional TRL calibration
• Enhanced response calibration improves transmission accuracy without two-port calibration speed penalty
• Adapter-removal calibration for non-insertable device measurement
• Marker functions: data, delta, and polar format markers
• S-parameter conversion to impedance/admittance (Z/Y) and inverse S-parameters
• Multiple display formats: log/linear magnitude, phase, group delay, SWR, real/imaginary components
– Typical Applications
Filter and amplifier characterization, transmission line analysis, impedance matching networks, device modeling for circuit simulation, component selection and screening, and system-level RF integration.
– Compatibility & Integration
Standard 50 ohm measurement impedance enables direct connection to industry-standard components and test fixtures. 3.5 mm connectors provide low-loss interfaces across the 50 MHz to 20 GHz band.
