For example: Agilent E4440A or Anritsu 68369
Microwave Adaptors
Keysight / Agilent 11500D
Cable, Type N (m) to Type N (m); dc to 18 GHz; 1500 mm

Manufacturer: Keysight / Agilent
Keysight / Agilent 87104D-024-161
Switch, SP4T, DC-40 GHz, Terminated

Manufacturer: Keysight / Agilent
Keysight / Agilent 8767K
Agilent 8767K Multiport Coaxial Switch, DC to 26.5 GHz, SP4THP Agilent 8767K Multiport Coaxial Switch, DC to 26.5 GHz, SP4T

Manufacturer: Keysight / Agilent
Keysight / Agilent 901D PN 00901-60004
2.4mm BROADBAND LOAD (F) 901D female 50 ohm termination, 50GHz

Manufacturer: Keysight / Agilent
Keysight / Agilent 909A
HP Agilent 909A Type-N Coaxial Termination, DC to 18 GHz

Manufacturer: Keysight / Agilent
Keysight / Agilent 909F
HP Agilent 909F Type N (f) Precision Coaxial Termination, DC to 18 GHz w/ Option 013

Manufacturer: Keysight / Agilent
Keysight / Agilent R347B
26.5 GHz to 40 GHz R-Band noise source nominal ENR 12dB

Manufacturer: Keysight / Agilent