Britton Jr Ralph H: Swept frequency measurement system. Pacific Measurements, Limbach Limbach & Sutton, September 9, 1975: US3904959 (14 worldwide citation)

A calibration curve for a test circuit alone is first memorized by the system and is then automatically subtracted from subsequent response measurements of a test device placed in the test circuit to give just the response characteristics caused by the test device. In one preferred embodiment, the s ...

Gary Yasumura, Robert D Genin, Scott F Wetenkamp: Broad band microwave detector. Pacific Measurements, Limbach Limbach & Sutton, November 23, 1982: US04360865 (10 worldwide citation)

An improved broad band microwave detector of the type including a detector diode, a by-pass capacitor, and a resistive termination wherein fabrication using coplanar transmission line techniques results in a substantial increase in the frequency response of the detector.