Mixer spur calculator, 4 are taken into account

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  1. Mixer spur calculator, With this tool, the output frequencies of an RF mixer are calculated using the Henderson [see the Watkins Johnson application note written by Henderson available after the installation of WinRFCalc] model for spurious calculations. . g. There are lots of bits of software that produce pretty graphical plots but I wanted something that just gave me the Radio Frequency Engineering Calculator. All n x m mixer spurs with LO harmonic n = 08 and IF harmonic m = 04 are taken into account. Its main use is found in conjunction with mixers, however, it can be applied to all kinds of nonlinear elements, e. Enter LO Tuning Range, IF frequency/bandwidth and injection side. Mixer Spur Search Calculate a list of mixer spurious responses for a set frequency plan. Browser-based RF mixer spur calculator for lab work. RF Mixer spurious analyser. There are lots of bits of software that produce pretty graphical plots but I wanted something that just gave me the The Mixer Spurious chart is a graphical representation of wanted and unwanted (spurious) mixing products in-band and out-of-band. Cascaded Mixer Spurs Calculator Note: The mixer is modeled as a double-balanced mixer. Additionally, the mixer spur suppression for the spur product (derived from the mixer definition file) is displayed along with the power level of the spur product at the system output (inclusive of system gain and filter rejection). Compute |n·Fin ± m·FLO| spurs with n,m up to 9, using input frequency ranges and LO. The Microwaves101 Professor has outdone them with an expanded mixer spur calculator which you can now download. Highlight spurs that fall inside up to three IF/RF output windows and export results to CSV. power amplifiers. If you don't know, it can be easy to miss spurs that are buried in the spectrum analyser noise but prove to be a problem later. This simple “spur table” calculator allows for inputting of LO and RF frequencies and calculates potential output mixing product frequencies (or spurs) according to: Cascaded Mixer Spurs Calculator Note: The mixer is modeled as a double-balanced mixer. The original version came about because when I'm checking mixer performance on the bench I found it useful to know exactly where to look for spurs. We would like to show you a description here but the site won’t allow us. Mar 2, 2007 · The CALCULATE SPUR LEVEL window is open wherein the frequency of the spur product is verified. Mixer Spur Analysis RF Mixer Configuration for Receive RF Mixer Configuration for Transmit The well known equation found behind all mixer-spurious analysis programs is given by (after the paper by Bert Henderson) in which n and m are (positive and negative) integers. A spur with an M value of 3 (or -3) will have an output level increase of 3 dB for each 1 dB increase in RF input level. We have also put up a page on the instructions for using the revised calculator, check it out! Download Chris and Graham's spur calculator spreadsheet Download The Professor's spur calculator spreadsheet The original version came about because when I'm checking mixer performance on the bench I found it useful to know exactly where to look for spurs. Some mixer manufacturers provide tables of spurious response levels for specific levels of LO and RF input power. It is assumed that the IM products are within the RF output bandwidth of the mixer, while the bandpass filter is modeled as a brick-wall filter.


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