For example: Agilent E4440A or Anritsu 68369
Detector
Pacific Measurements Corp 15176
1MHz-18.5GHz Balanced Detector
Manufacturer: Pacific Measurements Corp
Keysight / Agilent 33330B
Low-Barrier Schottky Diode Detector, 0.01 to 18 GHz
Manufacturer: Keysight / Agilent
Keysight / Agilent 33330C
Low-Barrier Schottky Diode Detector, 10 MHz to 26.5 GHz
Manufacturer: Keysight / Agilent
Narda 4506
SMA (M/F) 0.01 to 18 GHz Negative Polarity Zero Bias Schottky Detector
Manufacturer: Narda
Keysight / Agilent 83036C
Broadband Directional Detector, 10 MHz to 26.5 GHz
Manufacturer: Keysight / Agilent
Keysight / Agilent 85025C-K57
Millimeter Adapter for 85025C Detectors
Manufacturer: Keysight / Agilent
Keysight / Agilent 85025E
HP Agilent Keysight 85025E Coaxial Detector, 10 MHz to 26.5 GHz
Manufacturer: Keysight / Agilent
Hioki PD3129-10
Phase Rotation Meter with Easy-to-Read Arrow and Non-Metallic Contact Clips for 70V to 1000V Lines
Manufacturer: Hioki
Keysight / Agilent Q85026A
WR-22 Waveguide Detector, 33 GHz to 50 GHz
Manufacturer: Keysight / Agilent