Keysight 8445B Tracking Preselector
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Keysight 8445B is an automatic YIG filter preselector for spectrum analyzers covering 1.8–18 GHz with 20–45 MHz tracking bandwidth and 18 dB/octave roll-off.
Product details
| Model | 8445B |
| Manufacturer | Keysight |
| Category | RF & Microwave Test Equipment |
| Availability | Made to order |
Description
Overview
The Keysight 8445B is an automatic preselector/YIG filter module designed for use with Keysight spectrum analyzers. It automatically tracks the tuned frequency of the analyzer from 1.8 to 18 GHz, suppressing image and multiple responses that result from harmonic mixing.
Key Features
- Automatic YIG filter tracking 1.8 to 18 GHz
- 3 dB bandwidth: 20 to 45 MHz (typical)
- Skirt roll-off: 18 dB/octave (nominal)
- Electronically tuned by sweep voltage and band code signals from analyzer
- Low-pass filter covering DC to 1.8 GHz
Applications
- Spectrum analyzer preselector to suppress harmonic mixing products
- Image frequency suppression in RF and microwave measurements
Specifications
| Frequency Range | 1.8 to 18 GHz |
| 3 dB Bandwidth | 20 to 45 MHz (typical) |
| Skirt Roll-off | 18 dB/octave (nominal) |
| Filter Type | YIG (Yttrium Iron Garnet) |
| Tuning Method | Electronic (sweep voltage and band code signals) |
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Keysight 8445B Tracking Preselector
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