Advantest R3768/R3770 – Network analyzer

The Advantest R3768/R3770 network analyzer series delivers precision S-parameter measurement across extended frequency ranges, serving R&D, manufacturing, and quality control environments. The R3768 operates from 300 kHz to 8 GHz, while the R3770 extends to 20 GHz, both with 1 Hz setup resolution. These instruments characterize 2-, 3-, and 4-port networks with full S-parameter acquisition and flexible measurement formats including rectangular, Smith Chart, polar coordinates, and impedance/admittance conversion.

Dynamic range reaches 125 dB typical, with trace noise as low as 0.0025 dBrms at low frequencies and sweep speeds of 5 µs/point. Temperature stability holds 0.01 dB/°C to 2.6 GHz, degrading to 0.03 dB/°C above 8 GHz. Frequency accuracy is ±10 ppm at 23 ±5°C, with ±15 ppm stability across 5–40°C operation and ±3 ppm/year drift.

The integrated software fixture function enables real-time virtual matching circuit simulation, standardized impedance transformation, and software balun analysis for balanced component evaluation.

Technical Specifications

• Frequency Range: R3768: 300 kHz–8 GHz; R3770: 300 kHz–20 GHz


• Frequency Resolution: 1 Hz


• S-Parameter Measurement: 2-port (S11, S21, S12, S22); 3-port (9 parameters); 4-port (16 parameters)


• Measurement Formats: Rectangular (amplitude linear/log, phase, group-delay, VSWR, complex); Smith Chart; R+jX, G+jB; Polar (linear/log amplitude, phase, complex)


• Dynamic Range: Up to 125 dB typical


• Trace Noise: 0.0025 dBrms (300 kHz–10 MHz); 0.005–0.080 dBrms above 10 MHz depending on frequency


• Output Power Range (8 GHz 2-port): –9 to +11 dBm (300 kHz–0.5 GHz); –7 to +13 dBm (0.5–4.0 GHz); –10 to +10 dBm (4.0–6.0 GHz); –12 to +8 dBm (6.0–8.0 GHz)


• Extended Power Output: –74 to +6 dBm (300 kHz–0.5 GHz); –72 to +8 dBm (0.5–4.0 GHz)


• Frequency Accuracy: ±10 ppm (23 ±5°C); ±15 ppm (5–40°C); ±3 ppm/year


• Temperature Coefficient: 0.01 dB/°C (300 kHz–2.6 GHz); 0.02 dB/°C (2.6–8.0 GHz); 0.03 dB/°C (8.0–20 GHz)


• Sweep Speed: 5 µs/point minimum

Key Features

• Multi-port measurement capability with impedance/admittance conversion


• Software fixture function for virtual matching circuit simulation


• Software balun simulation for balanced parameter analysis


• Selectable rectangular, Smith Chart, and polar coordinate display modes

Typical Applications

• Component characterization (filters, amplifiers, antennas, transmission lines)


• Circuit design validation and tuning


• Manufacturing test and incoming inspection


• Quality assurance across production batches