Combine the remaining 3/4 cup orange juice, ginger ale, lemon juice and zest and cardamom in a martini shaker or small pitcher filled with ice. Stir or shake to mix. Fill each champagne glass two-thirds full with champagne. Top off each glass with 2 to 3 tablespoon of the orange juice mixture. Garnish each drink with a couple of the frozen raspberries and serve.