Agilent/Keysight 11664E

The Agilent/Keysight 11664E is a coaxial detector engineered to enhance measurement accuracy in scalar network analyzer applications. Operating in AC detection mode, it delivers precise RF signal level detection across a wide frequency spectrum and integrates directly with Keysight 8757, 8756, and 8755 series analyzers to reduce measurement uncertainty in RF and microwave testing.

Technical Specifications

• Frequency Range: 10 MHz to 26.5 GHz


• Dynamic Range: +16 dBm to −60 dBm


• Input Impedance: 50 ohms


• Maximum Input Power: +20 dBm (100 mW)


• RF Connector: APC-3.5 mm male


• Cable Length: Approximately 1.2 meters (4 feet)


• Weight: Approximately 0.17 kg (6 oz); shipping weight 3 lb

Return Loss Performance

• 10–40 MHz: >10 dB (SWR 20 dB (SWR 12 dB (SWR <1.67)

Key Features

• AC detection mode operation only


• Broad dynamic range spanning +16 dBm to −60 dBm for versatile signal measurement


• Excellent return loss performance across three frequency bands


• Calibrated for use with scalar network analyzers in the 8700 series


• Coaxial form factor with standard APC-3.5 mm male connector


• Supplied with cable markers for multi-detector identification

Typical Applications

• Scalar network analyzer enhancement for amplitude-only reflection and transmission measurements


• RF and microwave component characterization from 10 MHz through 26.5 GHz


• Simultaneous dual-measurement configurations using multiple 11664E detectors


• High-frequency signal detection and level monitoring in test setups

Compatibility & Integration The 11664E operates with Keysight scalar network analyzer series 8757, 8756, and 8755. Configuration with three 11664E detectors or two detectors and a bridge enables simultaneous transmission and reflection amplitude measurements displayed on the analyzer CRT. Detector identification via supplied cable markers simplifies operation in multi-detector deployments.