The Keysight/Agilent HP 11742A is a 0.045–26.5 GHz APC‑3.5 mm male‑to‑female inside DC‑blocking capacitor with very low insertion loss and low SWR, intended for use as a DC block in high‑frequency test and measurement chains.
| Parameter | Value | Notes |
|---|---|---|
| Frequency range | 0.045 to 26.5 GHz | Full published operating band. |
| Connector type | APC‑3.5 mm (male‑female) | Precision 3.5 mm connectors for low VSWR. |
| Insertion loss | ≤0.35 dB (0.045–12.4 GHz); ≤0.70 dB (12.4–26.5 GHz) | Low loss across band. |
| Reflection coefficient / SWR | ≤0.052 (≤1.11 SWR) to 8 GHz; ≤0.062 (≤1.13 SWR) to 12.4 GHz; ≤0.102 (≤1.23 SWR) to 26.5 GHz | Indicates excellent match for precision measurements. |
| DC working voltage | 50 V max | Absolute working limit for DC across the block. |
Low insertion loss and low SWR make the 11742A suitable for high‑accuracy amplitude and phase measurements up to 26.5 GHz.
Mechanical size: compact coaxial body suitable for bench and rack use; outline/dimensions provided in the datasheet.
Environmental ratings: Operating −5 °C to +60 °C; non‑operating −55 °C to +75 °C; altitude and humidity/vibration/shock test limits are specified in the datasheet for instrument‑grade reliability.