Agilent 8757E 110 GHz Scalar Network Analyzer

The Agilent 8757E is a scalar network analyzer delivering magnitude and phase measurements across 10 MHz to 110 GHz, with coaxial coverage to 50 GHz and waveguide extension to 110 GHz. It measures insertion loss, gain, return loss, SWR, power, and noise figure with a 75 dB dynamic range and dual independent display channels. Two independent display channels and three detector inputs enable simultaneous multi-parameter characterization.

The instrument supports ratioed and non-ratioed measurements in both AC (27.778 kHz ±12 Hz modulation) and DC modes, with trace resolutions of 101, 201, or 401 points and minimum sweep times as low as 40 ms. Averaging of up to 256 successive traces and configurable smoothing (0.1% to 20% aperture) reduce noise and improve measurement stability. An internal power meter calibrator option provides ±0.05 dB accuracy at 0 dBm across the +20 to –50 dBm range with ≤1.05 SWR.

Technical Specifications

• Frequency Range: 10 MHz to 110 GHz (coaxial to 50 GHz; waveguide to 110 GHz)


• Dynamic Range: 75 dB (+16 dBm to –60 dBm)


• Display Channels: 2 independent channels


• Detector Inputs: 3 inputs (Type N female)


• Measurement Modes: Ratioed/non-ratioed; AC at 27.778 kHz ±12 Hz; DC unmodulated


• Trace Resolution: 101, 201, or 401 points


• Sweep Time: 40–100 ms typical (1–2 traces, 101–401 points)


• Averaging: 2 to 256 successive traces


• Smoothing: Linear moving average, 0.1% to 20% aperture


• Power Meter Calibrator Accuracy: ±0.05 dB at 0 dBm; linearity ±0.04–0.08 dB across +20 to –50 dBm


• AUX Voltage Input: –10 to +10 V (rear panel BNC; ±60 mV typical error)

Key Features

• Dual independent display channels for simultaneous parameter tracking


• Three detector inputs enable multi-port and bridge-based measurements


• Optional internal power meter calibrator with high linearity


• Trace normalization stored at highest resolution


• Internal plotter/printer buffer for documentation

Typical Applications

• Component characterization in aerospace and defense


• Filter and amplifier design and validation


• Transmission and reflection measurements on RF/microwave devices


• Power and SWR monitoring in production and field environments

Compatibility & Integration The 8757E integrates with Agilent/Keysight 85025, 85026, and 85027 series detectors, as well as 11664 series detectors for extended measurement capability. Physical: 178 H × 425 W × 482 D mm; 22 kg net (28 kg shipping)