9 khz to 2 2 ghz signal generator

...Signal Generator 9 KHz - 1GHz (3 GHz or 6GHz Optional) Description of Keysight Agilent N5171B RF Analog Signal Generator Signal characteristics 9 kHz to 1, 3 or 6 GHz +21 dBm specified power to 3 GHz with electronic attenuator < 900-µs simultaneous switching of frequency and power < -121 dBc/Hz (typ) phase noise at 1 GHz and 20 kHz offset Modulation and sweep AM, FM, ØM, and narrow pulse Pulse train generator......

...signal generation from 300 kHz to 3.3 GHz with a wide –144 dBm to +13 dBm level range and fine 0.1 dB resolution, eliminating external pads for most device-under-test scenarios. Its 30 MHz internal I/Q path supports broadband WLAN, cellular and radar stimuli, while excellent phase-noise performance (≈ –134 dBc/Hz at 1 GHz, 20 kHz......

...human hearing (in the range of 16 kHz - 1 GHz). In addition, you can generate ultrasound with much higher energy, ie, much "louder" than the audible sound. In the use of ultrasound technology distinguish the weak signal (test materials, medical supplies,...