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.
Compower ABF-900
30 MHz - 300 MHz , Biconical antenna /w Collapsible elements

Manufacturer: Compower
Rohde and Schwarz AC004R1
18 - 26.5 GHz, Ominidirectional Microwave Antenna

Manufacturer: Rohde and Schwarz
Rohde and Schwarz AC004R2
26.5 - 40 GHz, Ominidirectional Microwave Antenna

Manufacturer: Rohde and Schwarz
Rohde and Schwarz AM524
100 Hz - 1000 MHz, Low Noise Active Antenna System

Manufacturer: Rohde and Schwarz
Compower CDN-T8E
Unshielded cable with 8 balanced conductor pairs,150 kHz - 230 MHz

Manufacturer: Compower
Rohde and Schwarz CMU-Z10
Antenna coupler for mobile phones (770-960MHz, 1700-2200MHz)

Manufacturer: Rohde and Schwarz
Rohde and Schwarz HE202
200-1000 MHz, Active Receiving Dipole Antenna

Manufacturer: Rohde and Schwarz
Rohde and Schwarz HE300
Active Directional Antenna 20 MHz to 7500 MHz

Manufacturer: Rohde and Schwarz