The Keysight (Agilent) 85027E directional bridge is high-performance reflection measurement hardware designed to operate with scalar network analyzers. It offers excellent directivity, low test port SWR, and a wide frequency range up to 26.5 GHz for RF and microwave components characterization in coaxial environments. depending on the analyzer model utilized, it can detect both AC and DC detection signals.
Specifications
General
| Parameter | Value |
|---|---|
| Interfaces | Integrated cable with multi-pin analog connector for connection to HP/Agilent scalar network analyzers |
| Display | No display (passive device requiring external scalar network analyzer) |
Physical
| Parameter | Value |
|---|---|
| Power Supply | Powered by host scalar network analyzer via connection cable |
| Operating Temperature | 0 to +55 °C |
| Dimensions (W×H×D) | 163 mm × 120 mm × 36 mm |
| Weight | 0.5 |
| Integrated Cable Length | 1.5 m (5 ft) |
RF & Electrical Performance
| Parameter | Value |
|---|---|
| Frequency Range | 10 MHz to 26.5 GHz |
| Nominal Impedance | 50 Ω |
| Directivity (0.01 to 20 GHz) | ≥40 dB |
| Directivity (20 to 26.5 GHz) | ≥36 dB |
| Maximum RF Input Power | +23 dBm (200 mW) |
| Maximum DC Input Voltage | ±16 V |
| Detection Modes | AC and DC (analyzer dependent) |
Impedance & SWR
| Parameter | Value |
|---|---|
| Test Port Return Loss (0.01 to 8 GHz) | ≥26 dB (SWR ≤ 1.11) |
| Test Port Return Loss (8 to 20 GHz) | ≥22 dB (SWR ≤ 1.17) |
| Test Port Return Loss (20 to 26.5 GHz) | ≥18 dB (SWR ≤ 1.29) |
Port & Connector Configurations
| Parameter | Value |
|---|---|
| Input Port Connector Type | 3.5 mm (f) |
| Test Port Connector Type | 3.5 mm (m) |
System Compatibility
| Parameter | Value |
|---|---|
| Compatible Analyzer Models | HP 8757 (AC/DC detection), HP 8756 (AC detection), HP 8755 (AC detection) |
Physical Characteristics
| Parameter | Value |
|---|---|
| Shipping Weight | 1.2 kg |
| Dimensions (inches) | 6.4 in × 4.7 in × 1.4 in |
Environmental
| Parameter | Value |
|---|---|
| Storage Temperature | -40 to +75 °C |
Port Characteristics
| Parameter | Value |
|---|---|
| Input Port Return Loss (0.01 to 20 GHz) | ≥ 20 dB |
| Input Port Return Loss (20 to 26.5 GHz) | ≥ 16 dB |
Interfaces
| Parameter | Value |
|---|---|
| Integrated Cable | 1.5 m (5 ft) cable with multi-pin connector for direct interface to 8757 analyzer |
Detector Characteristics
| Parameter | Value |
|---|---|
| Detector Type | Schottky diode |
Inputs & Outputs
| Parameter | Value |
|---|---|
| Cable Connector Type | Proprietary multi-pin (mates with Agilent/HP 8757 series SNA detector inputs) |
Power
| Parameter | Value |
|---|---|
| Power Source | Powered directly by the scalar network analyzer via the integrated cable |
Technology
RF/Microwave Directional Bridge
Applications
Reflection and transmission measurements with scalar network analyzers