Results of tests done on 13 miniature yagi aerials; half polar plots at 2.45GHz; 25 Nov 2009; JJ
Angle Titan Black Mesa PYB Thegasui SSPK KK ITGUS S & H Geo RNDM Dan & AD Star SLU/CNET
0 -52 -50 -54 -53 -59 -50 -73 -53 -76 -51 -61 -78 -49
10 -52 -50 -54 -53 -59 -51 -71 -53 -80 -51 -60 -79 -50
20 -53 -52 -54 -54 -60 -52 -67 -54 -71 -52 -60 -76 -51
30 -55 -54 -56 -56 -63 -54 -71 -56 -68 -55 -64 -75 -53
40 -57 -57 -60 -59 -67 -57 -70 -59 -67 -59 -79 -83 -56
50 -60 -63 -64 -63 -71 -63 -66 -61 -71 -66 -65 -81 -61
60 -63 -70 -65 -68 -74 -71 -64 -63 -70 -71 -68 -71 -68
70 -68 -79 -68 -75 -81 -77 -66 -69 -69 -76 -80 -68 -71
80 -83 -77 -73 -81 -76 -82 -73 -85 -69 -77 -72 -67 -82
90 -79 -75 -81 -81 -73 -78 -69 -83 -74 -73 -72 -70 -81
100 -80 -70 -100 -82 -72 -85 -64 -82 -75 -74 -72 -76 -72
110 -74 -68 -79 -76 -74 -73 -63 -75 -70 -75 -72 -76 -69
120 -80 -69 -70 -75 -74 -75 -62 -71 -69 -70 -75 -71 -69
130 -77 -70 -71 -73 -81 -77 -69 -77 -72 -66 -85 -70 -71
140 -72 -73 -69 -69 -74 -85 -62 -73 -70 -64 -77 -69 -75
150 -67 -75 -69 -66 -71 -69 -60 -70 -67 -63 -75 -66 -72
160 -63 -75 -69 -64 -69 -65 -63 -64 -65 -61 -68 -65 -65
170 -61 -79 -65 -63 -68 -63 -65 -61 -63 -61 -64 -67 -63
180 -60 -74 -63 -63 -67 -62 -63 -60 -62 -61 -63 -68 -62
Notes: levels are in dB, relative to an arbitrary fixed reference

You can draw a polar graph in excel by choosing the Radar graph type and selecting the appropriate data - as shown below. You can smooth the graph by right clicking on the plot, choose Format Data Series, Line Style and check the Smoothed line option.



Images:
blackmesa.png
dan&ad.png
geo.png
itgus.png
jasui.png
k-k.png
pyb.png
rndm.png
s&h.png
slucnet.png
sspk.png
star.png
titan.png