For example: Agilent E4440A or Anritsu 68369

Antenna

An antenna is a device used for transmitting and receiving electromagnetic waves, enabling wireless communication and connectivity in various applications.

Manufacturers: ICS, Compower, Rohde and Schwarz, AH Systems, Keysight / Agilent, ETS-Lindgren, EMCO, BK Precision, Advantest, Anritsu, Scientific Atlanta, Narda, Amplifier Research, Instruments for Industry, Symmetricom, A.H. Systems, Com-Power, Concentric Technology Solutions, ZDA Telecommunication, MEGAPULSE, Centurion, Haefely, Spectracom, Teseq (Schaffner), Instek, Aeroflex, Bird Electronics