The HP/Agilent 8720B is a 20 GHz network analyzer engineered for precise characterization of microwave components and networks. Operating from 130 MHz to 20 GHz, it measures complex transmission and reflection characteristics—S-parameters, magnitude, phase, and group-delay response—across two-port devices in the frequency domain.
Technical Specifications
Frequency & Resolution
• Frequency range: 130 MHz to 20 GHz
• Frequency resolution: 1 Hz (Option 001)
• Fast-sweeping synthesized source
Dynamic Range & Power
• Standard dynamic range: 85 dB
• Forward dynamic range: 95 dB (Option 003)
• Output power range: −65 dBm to −10 dBm
• Step attenuator: −10 to −65 dBm in 5 dB steps
Measurement Capability
Integrated switching S-parameter test set measures all four S-parameters (forward and reverse) with single connection. Display formats include log magnitude, linear magnitude, SWR, phase, group delay, polar, real, and Smith Chart. Two independent channels with full-color display. Vector accuracy enhancement built-in.
Signal Conditioning
Two internal bias tees provide DC bias to active devices through test ports. 3.5 mm connectors throughout.
– Key Features
• Time-domain measurement capability (Option 010)
• High forward dynamic range to 95 dB (Option 003)
• External disk drive support for direct save/recall
• VGA-compatible external monitor support
• Mini-DIN external keyboard interface for remote front-panel operation
• HP-IB (GPIB) interface for automated control and data transfer
• Rack-mount flange kit available (Option 913)
• Military Standard 456 option (Option 1BP)
– Typical Applications
Characterization of microwave filters, amplifiers, mixers, and passive components. Active device testing with integrated bias capability. Network impedance and transmission-line measurements. Time-domain reflectometry and impulse response analysis.
– Compatibility & Integration
GPIB-enabled computers with appropriate interface cards and drivers control the instrument remotely. GPIB cables supplied in 0.5 m, 1.0 m, and 2.0 m lengths. Optional calibration kits (Option 830) and dual disk drive package (Option 802) available. Operating manuals support HP 8719A, 8720B, 8719ET, 8720ET, 8722ET, and ES series variants.
