The Keysight (Agilent) 11970K is a high-performance, passive waveguide harmonic mixer designed to extend the frequency range of spectrum analyzers into the K-band (18 to 26.5 GHz). Featuring a dual-diode design, the 11970K achieves low conversion loss and an exceptionally flat frequency response without requiring external DC bias or tuning stubs.
Specifications
Physical
| Parameter | Value |
|---|---|
| Power Supply | None (passive device) |
| Operating Temperature | 0 to 55 °C |
| Dimensions (W×H×D) | 51 × 51 × 82 mm |
| Weight | 0.14 kg |
| Waveguide Size | WR-42 |
Frequency & Band Specifications
| Parameter | Value |
|---|---|
| RF Input Frequency Range | 18 to 26.5 GHz |
| LO Input Frequency Range | 3.0 to 6.1 GHz |
| IF Output Frequency Range | DC to 1300 MHz |
| LO Harmonic Number (N) | 6 |
| Waveguide Band Designation | K-band |
Electrical & Performance Parameters
| Parameter | Value |
|---|---|
| Maximum Conversion Loss | 24 dB |
| Flat Frequency Response | ±1.9 dB |
| Typical Gain Compression | -3 dBm |
| Maximum CW RF Input Level | +20 dBm (100 mW) |
| Maximum Peak Pulse Power | +24 dBm (250 mW) |
| Optimum LO Drive Level | +14 to +18 dBm |
| Spectrum Analyzer Noise Floor (1 kHz BW) | -105 dBm |
Port Impedance & VSWR
| Parameter | Value |
|---|---|
| RF Input Port SWR | Typically 2.2:1 |
DC Bias & Control Requirements
| Parameter | Value |
|---|---|
| External DC Bias Requirements | None (no bias required) |
| Tuning Adjustments | None (no tuning stubs required) |
Physical Interfaces & Connectors
| Parameter | Value |
|---|---|
| RF Input Connector Type | WR-42 Waveguide |
| Waveguide Flange Type | UG-595/U flange |
| LO Input Connector Type | SMA female |
| IF Output Connector Type | SMA female |
General
| Parameter | Value |
|---|---|
| Compatible Spectrum Analyzers | Keysight E4407B ESA-E, Agilent 8560 E-series, Agilent 8566B (with 11975A amplifier), Agilent 70000 MMS (with 70907A/B) |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature Range | -40 to +75 °C |
| Environmental Compliance | Meets MIL-T-28800C, Type III, Class 3, Style C |
Performance
| Parameter | Value |
|---|---|
| Calibration Points | Individually calibrated at 100 MHz intervals across the band |
Limits
| Parameter | Value |
|---|---|
| Maximum LO Input Level | +20 dBm (100 mW) |
| Maximum RF Input DC Voltage | 0 V |
| Maximum LO Input DC Voltage | ±0.2 V |
LO Input
| Parameter | Value |
|---|---|
| LO Input Impedance | 50 Ω nominal |
IF Output
| Parameter | Value |
|---|---|
| IF Output Impedance | 50 Ω nominal |
Calibration
| Parameter | Value |
|---|---|
| Calibration Accuracy | ±2.0 dB |
| Calibration Point Interval | 100 MHz |
Technology
Dual-diode passive harmonic mixer
Applications
Extending spectrum analyzer frequency range