For example: Agilent E4440A or Anritsu 68369
Signal Generators
RF and microwave signal generators, PXI and PCI signal generators include versatile arbitrary waveform generators, function generators, and RF vector signal generators.
Keysight / Agilent 83650B-001-002-008
Synthesized Swept-Signal Generator, 0.01 - 50 GHz

Manufacturer: Keysight / Agilent
Keysight / Agilent E8257D-007-1E1-1EA-1EH-520-UNR-UNU
PSG Analog Signal Generator

Manufacturer: Keysight / Agilent
Keysight / Agilent E8267D-544-602-UNT-UNX-016-1EH
44GHz Vector Signal Generator

Manufacturer: Keysight / Agilent
Keithley Instruments 2900-ARB-80
Arbitrary waveform generator, 80 MHz BW

Manufacturer: Keithley Instruments
Keithley Instruments 2910
400MHz - 2.5GHz Signal Generator Vector

Manufacturer: Keithley Instruments
Keithley Instruments 2910-ARB-ALG-GSM-WCDMA
Signal Generator Vector 2.5GHz

Manufacturer: Keithley Instruments
Keithley Instruments 2910-ARB-BT
Signal Generator Vector 2.5GHz (64Msa)

Manufacturer: Keithley Instruments
Keithley Instruments 2910-ARB-DIG-LPN
Signal Generator Vector 2.5GHz

Manufacturer: Keithley Instruments
Keithley Instruments 2910-ARB-F-DIG-LPN
400MHz - 2.5GHz Signal Generator Vector

Manufacturer: Keithley Instruments
Keithley Instruments 2910-ARB-LPN
Signal Generator Vector 2.5GHz (64Msa)

Manufacturer: Keithley Instruments
Keithley Instruments 2910-F-ARB-DIG-LPN
Signal Generator Vector 2.5GHz

Manufacturer: Keithley Instruments
Keithley Instruments 2910-F-DIG
400MHz - 2.5GHz Signal Generator Vector

Manufacturer: Keithley Instruments
Keithley Instruments 2910-F-DIG-LPN
400MHz - 2.5GHz Signal Generator Vector

Manufacturer: Keithley Instruments
Keithley Instruments 2920-80211-PC
Signal Meister Lic., 802.11a,b.g,j WLAN

Manufacturer: Keithley Instruments
Keithley Instruments 2920-FP-BT-006
10MHz - 6GHz RF Vector Signal Generator

Manufacturer: Keithley Instruments
Keithley Instruments 2920-FP-BT-006-ARB-40-102-107-108-80211
10MHz - 6GHz RF Vector Signal Generator

Manufacturer: Keithley Instruments
Keithley Instruments 2920-FP-BT-006-ARB-40-80211
10MHz - 6GHz RF Vector Signal Generator

Manufacturer: Keithley Instruments
Keithley Instruments 2920-RP-RK-004-LPN
RF VSG Rear Output, Rackmount 10 MHz - 4 GHz

Manufacturer: Keithley Instruments
Keysight / Agilent 33509B
33509B Waveform Generator, 20 MHz, 1-Channel

Manufacturer: Keysight / Agilent
Keysight / Agilent 33512B
Agilent 33512B Waveform Generator, 20 MHz, 2-Channel with Arb

Manufacturer: Keysight / Agilent
Aeroflex IFR 3413
Aeroflex IFR 3413 RF Digital Signal Generator 250kHz to 3GHz

Manufacturer: Aeroflex IFR
Anritsu 68077B
Anritsu Wiltron 68077B Synthesized Sweep Signal Generator, 10 MHz - 50 GHz

Manufacturer: Anritsu
Anritsu 68369B
Anritsu Wiltron 68369B Synthesized Sweep Signal Generator, 10 MHz - 40 GHz

Manufacturer: Anritsu
Anritsu 69367B
Anritsu 69367B Ultra Low Noise Synthesized High Performance Signal Generator, 10 MHz to 40 GHz.

Manufacturer: Anritsu
Anritsu 69367B-21B-6-10-15B-21B
Anritsu 69367B Ultra Low Noise Synthesized High Performance Signal Generator, 10 MHz to 40 GHz.

Manufacturer: Anritsu
Anritsu 69367B-2B-11-16-21B
Anritsu 69367B Ultra Low Noise Synthesized High Performance Signal Generator, 10 MHz to 40 GHz.

Manufacturer: Anritsu
Anritsu 69397B
Anritsu 69367B Ultra Low Noise Synthesized High Performance Signal Generator, 10 MHz to 40GHz.

Manufacturer: Anritsu
Keysight / Agilent 81150A
Agilent 81150A Pulse Function Arbitrary Noise Generator

Manufacturer: Keysight / Agilent