The Keysight Agilent 11970U is a high-performance waveguide harmonic mixer designed to extend the frequency range of spectrum analyzers to the U-band (40 to 60 GHz). It employs a dual-diode design that achieves exceptionally flat frequency response and low conversion loss without requiring external DC bias or tuning stubs. This makes both manual and automated millimeter-wave measurements simple, precise, and highly reliable.
Specifications
Physical
| Parameter | Value |
|---|---|
| Power Supply | None (passive device, no external DC bias required) |
| Operating Temperature | 0 to 55 °C |
| Dimensions (W×H×D) | 70 mm × 47 mm × 103 mm |
| Weight | 0.14 kg |
| Shipping Weight | 0.9 kg |
Frequency & Band Specifications
| Parameter | Value |
|---|---|
| Waveguide Band Designation | U Band |
| RF Input Frequency Range | 40 to 60 GHz |
| LO Input Frequency Range | 3.0 to 6.1 GHz |
| IF Output Frequency Range | DC to 1300 MHz |
| Harmonic Number (N) | 10- |
| Waveguide Designation | WR-19 |
Electrical & Performance Parameters
| Parameter | Value |
|---|---|
| Conversion Loss (Maximum) | 28 dB |
| Conversion Loss Flatness Across Band | ±1.9 dB |
| Maximum RF Input Power (CW Damage Level) | +20 dBm (100 mW) |
| Maximum Peak Pulse Power | +24 dBm (250 mW) with pulse width <1 µs |
| Optimum LO Drive Level | +14 to +18 dBm |
Port Impedance & VSWR
| Parameter | Value |
|---|---|
| Typical RF Input SWR | <2.2:1 |
| Nominal Port Impedance | 50 Ω (LO and IF ports) |
Physical Interfaces & Connectors
| Parameter | Value |
|---|---|
| RF Input Connector Type | WR-19 Waveguide |
| Waveguide Flange Type | UG-383/U-M circular flange |
| LO Input Connector Type | SMA female |
| IF Output Connector Type | SMA female |
DC Bias & Control Requirements
| Parameter | Value |
|---|---|
| External DC Bias Requirements | None (unbiased dual-diode design) |
| Tuning Adjustments | None required (no tuning stubs) |
Environmental & Reliability
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 to +75 °C |
Compliance & Quality Standards
| Parameter | Value |
|---|---|
| Calibration Traceability | Individually calibrated conversion loss chart attached to housing |
General & Compatibility
| Parameter | Value |
|---|---|
| Compatible Spectrum Analyzers | Keysight E4440A/46A/48A PSA, E4407B ESA-E, 8560 E-series, 8566B (with 11975A amplifier), 70000 MMS (with 70907A/B interface) |
Performance
| Parameter | Value |
|---|---|
| Typical Calibration Uncertainty | ±2.0 dB |
| Calibration Step Size | 1 GHz |
| Maximum LO Input Power | +20 dBm |
Environmental
| Parameter | Value |
|---|---|
| Environmental Standards | MIL-T-28800C, Type III, Class 3, Style C (except operating temperature) |
Compliance
| Parameter | Value |
|---|---|
| MIL-T-28800C Compliance | Type III, Class 3, Style C |
Calibration
| Parameter | Value |
|---|---|
| Recommended Calibration Cycle | 1 year |
Technology
Harmonic Mixer
Applications
Millimeter-wave spectrum analysis and frequency extension
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