added

git-svn-id: http://moon:8086/svn/matlab/trunk@99 801c6759-fa7c-4059-a304-17956f83a07c
2018-08-30 18:06:49 +00:00
parent 07c78cd992
commit 1ab94a4bea
24 changed files with 988 additions and 0 deletions
@@ -0,0 +1,28 @@
+function vga_eval(gain_dB)
+% gain_dB : combined gain
+ 
+% Constants (gain contraints of HMC625)
+gain_min_dB = -13.5; 
+gain_max_dB = +18.0;
+ 
+% Gains of individual VGA
+vga_gain = zeros(1,2);
+ 
+if gain_dB > 0
+  for k=1:length(vga_gain),
+    vga_gain(k) = min(gain_max_dB, gain_dB);
+    gain_dB = gain_dB - vga_gain(k);
+  end
+else
+  for k=1:length(gain),
+    vga_gain(k) = max(gain_min_dB, gain_dB);
+    gain_dB = gain_dB - vga_gain(k);
+  end
+end
+  
+vga_gain = vga_gain
+fprintf(stdout, "Gain = %f\n", vga_gain(1) + vga_gain(2));
+if gain_dB > 0
+  fprintf("Gain not reached!\n");
+end
+