fixed feature size

dxfs/10MHz_single_IDT/single_idt.json

@@ -25,7 +25,7 @@
             "prop_text_size": "2.5",
             "scale_unit": "1000",
             "size": "0.002",
-            "substrate": "SI",
+            "substrate": "LINBO",
             "test_number": "1",
             "thickness": "0",
             "title_text_size": "4",

dxfs/25MHz_cross_idt/cross_pattern_idt.json

@@ -1,28 +1,29 @@
 {
     "parameterSets": {
-        "frogs": {
+        "design default values": {
             "$fa": "1",
             "$fs": "0.01",
             "FONT": "Ubuntu Sans Mono:style=Regular",
             "SCRIPT_VERSION": "0.0.1",
             "bond_pad_shape": "square",
             "c": "3992",
-            "distance": "50",
+            "distance": "150",
             "finger_length": "60",
-            "freq": "5e+7",
+            "freq": "2.5e+7",
             "gap": "0",
-            "has_id_number": "true",
+            "has_id_number": "false",
             "id_text_size": "1",
-            "idt_x_spacing": "10",
+            "idt_1_x_offset": "0",
-            "idt_y_spacing": "12.5",
+            "idt_1_y_offset": "0",
-            "info_block_offset_x": "7",
+            "idt_2_x_offset": "0",
-            "info_block_offset_y": "30",
+            "idt_2_y_offset": "0",
+            "info_block_offset_x": "20",
+            "info_block_offset_y": "-30",
             "info_block_scale": "0.3",
             "leg_angle": "10",
             "leg_length": "0.003",
             "leg_width": "0.00001875",
             "n_fingers": "50",
-            "number_of_idts_per_quadrent": "4",
             "prop_text_size": "2.5",
             "scale_unit": "1000",
             "size": "0.002",

makefile

@@ -0,0 +1,19 @@
+
+
+all: single_10MHZ pair_10MHZ quadrand_50MHz array_345MHz cross_25MHz
+
+
+single_10MHZ:
+	openscad -o dxfs/10MHz_single_IDT/single_10MHZ.dxf wafer_layouts/single_idt.scad -p dxfs/10MHz_single_IDT/single_idt.json
+
+pair_10MHZ:
+	openscad -o dxfs/10MHz_pair_IDT/pair_10MHZ.dxf wafer_layouts/pair_idt.scad -p dxfs/10MHz_single_IDT/pair_idt.json
+
+quadrand_50MHz:
+	openscad -o dxfs/50MHz_quadrant_array_16/quadrand_50MHz.dxf wafer_layouts/quadrant_array.scad -p dxfs/50MHz_quadrant_array_16/quadrant_array_16_50MHz.json
+
+array_345MHz:
+	openscad -o dxfs/345MHz_grid_10_10_IDT/array_345MHz.dxf wafer_layouts/gird_array_idt.scad -p dxfs/345MHz_grid_10_10_IDT/gird_array_idt.json
+
+cross_25MHz:
+	openscad -o dxfs/25MHz_cross_idt/cross_25MHz.dxf wafer_layouts/cross_pattern_idt.scad -p dxfs/25MHz_cross_idt/cross_pattern_idt.json

modules/idt.scad

@@ -1,6 +1,14 @@
 // creates 1 side of the idt
-module delay_line(lambda = 1, n_fingers = 1, finger_length = 50, gap = 0, thickness = 0) {
+module delay_line(
-    // code
+    lambda = 1, 
+    n_fingers = 1, 
+    finger_length = 50, 
+    gap = 0, 
+    thickness = 0
+) {
+
+    // just a very small value that allows the polygons to overlap nicely
+    esp = $fs;
     l45 =lambda*5/4;
     l2 = lambda/2;
     l4 = lambda/4;
@@ -24,8 +32,8 @@ module delay_line(lambda = 1, n_fingers = 1, finger_length = 50, gap = 0, thickn
         [b+f, l2],
         [b+f, l2+l4],
         [b, l2+l4],
-        [b, l4*5-l4],
+        [b, l4*5-l4 + esp],
-        [0, l4*5-l4]
+        [0, l4*5-l4 + esp]
     ];
     union () {
 

wafer_layouts/cross_pattern_idt.scad

@@ -36,7 +36,7 @@ substrate = "LINBO";
 c = 3992.0;
 // si
 // c = 3159.0;
-freq = 50.0e6;
+freq = 25.0e6;
 
 // $fs = (c/freq);
 
@@ -101,7 +101,7 @@ module params() {
             str("leg_length     : ", leg_length),
             str("leg_angle      : ", leg_angle),
             str("size           : ", size),
-            str("feat. size (mm): ", (c/freq)*1e3),
+            str("feat. size (mm): ", (c/freq)*1e3 / 4),
             str("version        : ", SCRIPT_VERSION)
         ]
     );

wafer_layouts/gird_array_idt.scad

@@ -143,7 +143,7 @@ module params() {
             str("leg_length     : ", leg_length),
             str("leg_angle      : ", leg_angle),
             str("size           : ", size),
-            str("feat. size (mm): ", (c/freq)*1e3),
+            str("feat. size (mm): ", (c/freq)*1e3 / 4),
             str("version        : ", SCRIPT_VERSION)
         ]
     );

wafer_layouts/hex_layout_idt.scad

@@ -105,7 +105,7 @@ module params() {
             str("leg_length     : ", leg_length),
             str("leg_angle      : ", leg_angle),
             str("size           : ", size),
-            str("feat. size (mm): ", (c/freq)*1e3),
+            str("feat. size (mm): ", (c/freq)*1e3 / 4),
             str("version        : ", SCRIPT_VERSION)
         ]
     );

wafer_layouts/pair_idt.scad

@@ -25,7 +25,11 @@ SCRIPT_VERSION="0.0.1";
 // this really just need to be any mon font
 FONT="Ubuntu Sans Mono:style=Regular";
 test_number = 1;
+
 // scale in m
+// 1e3 : mm
+// 1e6 : um
+// 1e9 : nm
 scale_unit = 1e3;
 // ================= meta =================
 
@@ -101,7 +105,7 @@ module params() {
             str("leg_length     : ", leg_length),
             str("leg_angle      : ", leg_angle),
             str("size           : ", size),
-            str("feat. size (mm): ", (c/freq)*1e3),
+            str("feat. size (mm): ", (c/freq)*1e3 / 4),
             str("version        : ", SCRIPT_VERSION)
         ]
     );

wafer_layouts/quadrant_array.scad

@@ -89,7 +89,7 @@ module params() {
             str("leg_length     : ", leg_length),
             str("leg_angle      : ", leg_angle),
             str("size           : ", size),
-            str("feat. size (mm): ", (c/freq)*1e3),
+            str("feat. size (mm): ", (c/freq)*1e3 / 4),
             str("version        : ", SCRIPT_VERSION)
         ]
     );

wafer_layouts/single_idt.scad

@@ -47,7 +47,7 @@ scale_unit = 1e3;
 substrate = "SI";
 
 // linbo
-// the aoucstice wave speed in the substrate
+// the acoustic wave speed in the substrate
 c = 3992.0;
 // si
 // c = 3159.0;
@@ -144,7 +144,7 @@ module params() {
             str("leg_length     : ", leg_length),
             str("leg_angle      : ", leg_angle),
             str("size           : ", size),
-            str("feat. size (mm): ", (c/freq)*scale_unit),
+            str("feat. size (mm): ", (c/freq)*1e3 / 4),
             str("version        : ", SCRIPT_VERSION)
         ]
     );