Design and synthesize modern advanced RF and microwave filters with Couplings Designer for iPhone, available today for $29.99 at the app store. Try Couplings Designer LITE for free, which has all the features but limited to 4th order filters.
Couplings Designer is a powerful and modern coupling matrix synthesis software for professional filter designs. It features an easy to use interface, tuning, a built-in coupling matrix optimizer, Monte Carlo tolerance analysis and an arbitrary topology transformer. It’s an ideal tool for professional filter engineers, system engineers and students alike. Read more about it here..