rfplot

Plot mixer spurs of IMT mixer

Since R2022a

Syntax

rfplot(imt,frequency)

rfplot(ax,imt,frequency)

Description

rfplot(imt,frequency) plots the mixer spurs response of the IMT mixer object imt at the frequency specified in frequency. The function plots the mixer spurs on the current axes, with the frequency in Hz on the X-axis and the input power in dBm on the Y-axis.

example

rfplot(ax,imt,frequency) plots the mixer spurs on the axes specified in ax instead of the current axes. Return the current axes using the gca function.

Examples

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Plot Mixer Spur of IMT mixer

Open Live Script

Create an IMT mixer with the LO frequency of 5995 MHz and with the IMT spurs.

imt = mixerIMT(LO=5995e6,IMT=...
     [99 17 13.6 42.9; 40 0 47.7 54.3; 50.4 58.5 61.3 72.2; 75 67.4 75 99]);

Plot the mixer spur at an input signal frequency of 1005 MHz.

rfplot(imt,1005e6)

Figure contains an axes object. The axes object with title Mixer Spurs, xlabel Frequency [GHz], ylabel Power [dBm] contains 2 objects of type stem. These objects represent Signal, Spurs.

Plot IMT Spurs in Tabs

Open Live Script

Create an IMT mixer with 4-by-4 IMT spur data.

imt = mixerIMT(LO=5995e6,IMT=...
     [99 17 11.6 42.9; 40 0 44.7 54.3; 51.4 58.5 61.3 72.2; 75 67.4 73 99]);

Create an IMT mixer with 3-by-3 IMT spur data.

imt2 = mixerIMT(LO=5995e6,IMT=...
     [99 99 80; 99 0 99; 99 80 99]);

Type these commands at the command line to create a rfplot figure with two tabs. Add axes to each tab by specifying the parent container for each axis. Plot the IMT mixer with the 4-by-4 IMT spur data in the first tab and the IMT mixer with the 3-by-3 IMT spur data in the second tab.

figure
tab1 = uitab('Title','4-by-4 IMT spur data');
ax3 = axes(tab1);
rfplot(ax3,imt,frequency=1005e6, powerinput=-5)

tab2 = uitab('Title','3-by-3 IMT spur data');
ax4 = axes(tab2);
rfplot(ax4,imt2,frequency=1005e6, powerinput=-5)