RF Signal Generator USG-LF44

Frequency Range: 34.5MHz ~ 4400MHz

Output Power Range: -30dBm ~ 0dBm

Continuous Wave Signal Without any Modulation

Support Fixed Frequency, Frequency Sweep, Frequency Hopping & Power Sweep Mode

-107dBc/Hz Phase Noise @100kHz Offset

Frequency Resolution: 10kHz

PC USB Interface Powered and Controlled

External PC Software Support Different Operating System

GW Instek debuts the brand new USG-Series RF signal generator, which comes with five models to meet users’ requirements and is a pocket-sized, and USB interface compatible RF signal generator with the frequency range from 35MHz to 4400MHz. The USG-Series provides continuous wave (CW) signal outputs without any signal modulation function. The built-in electronic attenuator of the USG-Series allows an adjustable power range from -30dBm to 0dBm. The USG-Series has several operational modes including fixed frequency, frequency sweep, frequency hopping, and power sweep. The USB-Series RF signal generator, with the frequency bandwidth limitation, provides lower harmonic output performance.

Figure shows the test result of USG-LF44 simultaneous power sweep and frequency sweep. The test result covers the frequency range from 35MHz to 4400MHz and the power range from -30dBm to 0dBm. The yellow trace illustrates the test result of maximum hold and the pink trace shows the test result of signal output.

A USG CD-ROM provides dedicated PC application programs, which were developed under JAVA software* structure. Users must install JAVA software to use USG PC application programs, which support operating systems such as Windows 2000/XP/Vista/7/8, Linux & Mac OS X through the USB interface.

Users can download USG APP to smart phone or tablet with Android 4.0 or above. To operate USG, use USB-OTG connecting cable to connect tablet (or smart phone) and USG. The Android APP application software for the USG signal generator is available on Google Play Store.

The USG signal generator can be designated as the tracking generator for GSP-730 spectrum analyzer to conduct measurement functions of scalar network analyzer. A USG CD-ROM provides PC application programs for the Primary RF software. Users can, using a Windows OS computer, control USG and GSP-730 via the Primary RF software. The NI-488.2 software** must be installed first before installing Primary RF software.

USG-LF44 Specifications

Frequency Range:
- 34.5 MHz to 4.4 GHz

Output Power:
- -30 dBm to 0 dBm in 1 dB steps

Internal Reference Frequency:
- 25 MHz, aging ±1 ppm at first year

Frequency Accuracy (0 dBm Output Level):
- ±150 Hz at 100 MHz

Frequency Resolution:
- 10 kHz

Output Isolation:
- ≤-75 dBc, Output Control On/Off

Mode Control:
- Fixed Frequency / Single Sweep / CW Sweep/Hopping/Power Sweep

Step Dwell:
- ≤ 1000 ms in 1 ms steps

Frequency Offset:
- -50 kHz to 50 kHz in 10 kHz steps

Output Flatness:
- -1dBm~3.5dBm typical (at 0 dBm Output)

Phase Noise:
- <-97 dBc/Hz (10 kHz offset @ 1.0 GHz, typical)
- <-100 dBc/Hz (100 kHz offset @ 1.0 GHz, typical)
- <-88 dBc/Hz (10 kHz offset @ 3.7 GHz)
- <-94 dBc/Hz (100 kHz offset @ 3.7 GHz)

2nd Harmonics:
- 0 dB Attenuation: ≤-15 dBc, typical (34.5 MHz to 2.0 GHz, fundamental)
- 0 dB Attenuation: ≤-10 dBc, typical (2.0 GHz to 3.0 GHz, fundamental)
- 0 dB Attenuation: ≤-25 dBc, typical (3.0 GHz to 4.4 GHz, fundamental)

3rd Harmonics:
- 0 dB Attenuation: ≤-5 dBc, typical (34.5 MHz to 2.0 GHz, fundamental)
- 0 dB Attenuation: ≤-20 dBc, typical (2.0 GHz to 3.0 GHz, fundamental)
- 0 dB Attenuation: ≤-40 dBc, typical (3.0 GHz to 4.4 GHz, fundamental)

Spurious related to output:
- ≤-30 dBc, typical (Resolution <1 MHz)
- ≤-65 dBc, typical (Resolution ≥ 1MHz)

Spurious related to the fundamental output (Single Point Mode):
- ≤-65 dBc, typical

Accessories

USB cable
CD-ROM with USG software
GSP-730 PrimaryRF software and user manual

Optional Accessories

ADP-003, 50 Ohm N type (female) to SMA (female) Adapter
GTL-303, 50 Ohm SMA RF cable (600mm)

RF Signal Generator USG-LF44