Active RF Mixer / RF Signal Generator – MixNV
The Windfreak MixNV is a 1 MHz to 6 GHz software programmable RF mixer (upconvert or downconvert) with a built in Local Oscillator controlled and powered by a PC running Windows, Linux or Android.
The oscillator will tune from 85MHz to 5GHz in 1Hz steps using an advanced sigma-delta modulator PLL that delivers low fractional spurious products and excellent phase noise.
The MixNV also has nonvolatile on board memory so it can be programmed to fire up by itself to any LO frequency, FSK modulation, or other settings. This makes for a highly mobile, low power and light weight solution for your RF frequency conversion needs.
The MixNV is designed as a stand alone mixer for use in RF and Microwave communications products or test setups but has the ability to self bias the mixer such that it can be used as a signal generator with fine frequency resolution. It also has the ability to perform 2 level FSK (Frequency Shift Keyed) Modulation with finely adustable frequency deviation via software or offboard external 3.3V cmos drive. Use the open source Windfreak software, or the device can be controlled easily with 3rd party programs such as Hyperterminal or other freeware serial communications terminals across many operating systems.
Case Dimensions including mounting tabs: 2.5″ X 1.375″ X 0.75″ (6.35cm X 3.5cm X 1.9cm)
Block Diagram: (Note: The external FSK connection is available inside on the PCB but not through the case.)
Shown below, the software is eloquently engineered giving professional performance at a fraction of the cost of a separate mixer plus RF synthesizer solution.
Main tab for frequency and mode setting. (Both modes shown – Mixer and LO Mode)
FM Modulation Tab. Enter deviation and rate. Also manually toggle between FSK frequencies with Mod Bit for fine tuning.
Shown is 10.123KHz deviation FSK.
Extras Tab. Save all settings to MixNV EEPROM and read firmware version. Also choose external or 10MHz internal reference.
USB Communications Tab. Scan for devices connected and determine the built in serial number.
This software was written in Labview. The open source code is included so that you can modify and enhance any way you see fit for your own use. Please do not distribute. If you don’t own Labview, you will also get the executable that will install stand-alone and run on a PC. (Note: The Labview development system is available with a free 1 month trial from National Instruments.) All source code is sent on CD “saved as” using the latest version of Labview Basic.
The MixNV is also very easy to control without using the Windfreak supplied software. Click the link below to see the format for MixNV serial communications and how to use 3rd party (free) software to control the device on windows or any other operating system. With this format of serial communications, writing your own control software will be very easy.
**The MixNV has been tested with a terminal program from the Google Play market called “Android USB Serial”. This app is currently free. The only hardware it has been tested with to date is the Samsung Galaxy Note 1. To act as a USB host the phone needs a USB dongle which is about a $15 cable from Amazon. The Galaxy Note is successfully able to power the MixNV making it one of the most portable RF Signal Generators in the world. If you have success with your phone, please drop us an email so we can add it to the list of compatible hardware.
Local Oscillator accuracy is based on an onboard 2.5ppm 10MHz crystal oscillator, which is also routed to the outside world via the reference SMA connector. This connector can also be used to input a higher precision reference if so desired. The external reference can range from 10MHz to 100MHz. Internal or External reference selection is made via software.
The operating temperature range of the MixNV is -40C to +85C.
The MixNV will run off USB power via its USB mini connector. It will also run standalone via its 5 (+/-0.5) volt DC power connector. Current draw is 150mA. The center pin is positive and the outer conductor is ground.
Compare this unit to other less integrated solutions worth thousands of dollars. Windfreak Technologies has invested hundreds of man hours on software that you get to build upon for highly custom applications. The Labview source code is included with your purchase.
Some applications include: wireless communications systems, SDR, microwave point to point backhaul radios, Automated Test Equipment (ATE), frequency upconversion, frequency downconversion, Local Oscillator (LO) replacement, transverters, and hobbyist radio development.
For orders over 10 units volume discounts will apply. Request a quote via this Web Form . Emails will be answered within 24 hours. Keep an eye on your SPAM folder. You will be given a lead time (usually ships right away) and a quote if you desire large volume.
IN STOCK. Ships within 2 business days.