Fix touchstone deepcopy issue

_unittest/test_44_TouchstoneParser.py

@@ -38,7 +38,7 @@ def test_02_read_ts_file(self):
         ts1 = TouchstoneData(touchstone_file=os.path.join(test_T44_dir, "port_order_1234.s8p"))
         assert ts1.get_mixed_mode_touchstone_data()
         ts2 = TouchstoneData(touchstone_file=os.path.join(test_T44_dir, "port_order_1324.s8p"))
-        assert ts1.get_mixed_mode_touchstone_data(port_ordering="1324")
+        assert ts2.get_mixed_mode_touchstone_data(port_ordering="1324")
 
         assert ts1.plot_insertion_losses(plot=False)
         assert ts1.get_worst_curve(curve_list=ts1.get_return_loss_index(), plot=False)

pyaedt/generic/touchstone_parser.py

@@ -1,4 +1,4 @@
-from copy import deepcopy as copy
+from copy import deepcopy
 import itertools
 import os
 import re
@@ -86,6 +86,18 @@
             rf.Network.__init__(self, touchstone_file)
         self.log_x = True
 
+    def __deepcopy__(self, memo):
+        cls = self.__class__
+        result = cls.__new__(cls)
+        memo[id(self)] = result
+
+        for key, value in self.__dict__.items():
+            if key == "solution_data":
+                setattr(result, key, value)
+            else:
+                setattr(result, key, deepcopy(value, memo))
+        return result
+
     @pyaedt_function_handler()
     def get_insertion_loss_index(self, threshold=-3):
         """Get all insertion losses. The first frequency point is used to determine whether two
@@ -214,7 +226,7 @@
         TouchstoneData
 
         """
-        ts_diff = copy(self)
+        ts_diff = deepcopy(self)
         port_count = len(ts_diff.port_names)
 
         if num_of_diff_ports is None: