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.
Rohde and Schwarz HM525
100 Hz - 30 MHz, Active H Field Test Antenna
Manufacturer: Rohde and Schwarz
Concentric Technology Solutions TC-93021A
Flat Type Antenna Coupler
Manufacturer: Concentric Technology Solutions