The HP 11664A is a wideband RF detector engineered for envelope detection within HP scalar network analyzer systems. Operating across 10 MHz to 18 GHz, it detects the envelope of a 27.8 kHz amplitude-modulated RF signal and delivers a 10 VDC output proportional to signal level. Maximum input power is +20 dBm (100 mW), with usable dynamic range from +10 dBm to -50 dBm. The detector features 50-ohm nominal input impedance with type N male connector (APC-7 and SMA jack options available). Frequency response variation remains below 0.5 dB from 10 MHz to 8 GHz, with <1.0 dB variation to 12 GHz and <1.5 dB to 18 GHz. Tracking between paired detectors is <0.5 dB (10 MHz–8 GHz), <1.0 dB (8–12 GHz), and <1.5 dB (12–18 GHz). Temperature stability is approximately ±0.4 dB across the operating range. VSWR performance ranges from 1.22 to 1.92 across the frequency band. Operating temperature: 0°C to 55°C. The detector arrives with a 1.2-meter cable and cable marker kit.
Technical Specifications
• Frequency Range: 10 MHz to 18 GHz
• Input Power Range: +10 dBm to -50 dBm
• Maximum Input Power: +20 dBm (100 mW)
• DC Output: 10 VDC
• Input Impedance: 50 ohms nominal
• Detection Mode: Envelope detection of 27.8 kHz amplitude-modulated RF signal
• Frequency Response Variation: <0.5 dB (10 MHz–8 GHz); <1.0 dB (8–12 GHz); <1.5 dB (12–18 GHz)
• Temperature Stability: ±0.4 dB typical
• Detector Tracking: <0.5 dB (10–8 GHz); <1.0 dB (8–12 GHz); <1.5 dB (12–18 GHz)
• VSWR: 1.22–1.92 depending on frequency band
• Operating Temperature: 0°C to 55°C
• Storage Temperature: -40°C to 75°C
• Connector: Type N male (Options: APC-7, SMA jack)
• Cable Length: 1.2 meters
• Weight: 0.17 kg (6 oz.)
– Key Features
• Wide dynamic range suitable for precision power measurement and signal monitoring
• Low frequency response variation across the entire operating band
• Multiple connector options for system integration flexibility
• Tight tracking characteristics between paired detectors for dual-channel measurements
• ESD-protected design
– Typical Applications
• Signal monitoring and power measurement in network analysis
• System calibration within scalar analyzer environments
• Amplitude-only transmission and reflection measurements (up to three detectors simultaneously)
– Compatibility & Integration
Designed for operation with HP 8757, 8756, and 8755 series scalar network analyzers in AC mode. Compatible with directional bridges (HP 85021A/C, HP 11666A) and sweep oscillators (HP 8350 and 8620 series) for comprehensive measurement systems.
