The HP/Agilent 83640B is a synthesized swept-signal generator delivering precision frequency synthesis across 0.01 GHz to 40 GHz with +10 dBm calibrated output power. Built on indirect synthesis architecture, this instrument achieves superior single-sideband phase noise performance while maintaining broad spectral coverage. The 83640B supports multiple operational modes—CW, step sweep, list mode, manual sweep, ramp sweep, and analog sweep variants—alongside modulation capabilities including pulse, AM, and FM. Frequency resolution reaches 1 Hz with Option 008, stepping down to 1 kHz standard. Output power ranges from -20 dBm to +10 dBm leveled; Option 001 extends the range to -110 dBm minimum. Switching time of 10 ms typical (without attenuator change) enables rapid frequency transitions. Temperature stability holds 0.01 dB/°C for output power. This generator is engineered for radar system characterization, wireless communication testing, and microwave circuit validation where signal purity and dynamic range matter.
## Technical Specifications
• **Frequency Range:** 0.01 GHz to 40 GHz
• **Calibrated Output Power:** +10 dBm
• **Output Power Range (Levelled):** -20 dBm to +10 dBm; -110 dBm to +10 dBm with Option 001
• **Single-Sideband Phase Noise:** Typically -80 dBc at 10 GHz, 10 kHz offset
• **Harmonics:** Typically -50 dBc below 26.5 GHz; -40 dBc minimum above 26.5 GHz
• **Frequency Resolution:** 1 kHz standard; 1 Hz with Option 008
• **Switching Time:** 10 ms typical (without attenuator change); 15 ms + (step size/1 GHz) × 5 ms for frequency band steps
• **Temperature Stability (Output Power):** 0.01 dB/°C typical
• **Source Match (Internally Leveled):** 1.6:1 SWR <20 GHz; 1.8:1 SWR <40 GHz; 2.0:1 SWR <50 GHz
## Key Features
• Indirect synthesis for low-noise performance across the band
• Modulation support: pulse, AM (DC to 250 kHz, 3 dB), FM
• Pulse modulation for frequencies ≥400 MHz; internal pulse generator included
• Option 002 adds 30 ns delay and ±5 ns pulse compression for external pulse inputs
• External ALC (Automatic Level Control) supported
• Power meter mode at 0.7 Hz nominal
• Operating temperature range: 0 °C to 55 °C
## Typical Applications
• Radar system testing and characterization
• Wireless communication signal validation
• Microwave circuit design and verification
## Compatibility & Integration
Multiple sweep modes and modulation types enable integration into automated test systems and manual measurement setups. Option 001 step attenuator expands dynamic range to -110 dBm minimum output.
