This is the definitive reference text on dielectric resonators used in filters and oscillators. The second edition includes corrections and updates, plus a new chapter instructing readers on the use of software utility programs included on a new disk. The first edition was published in 1986, and the book remains unique to the subject matter. Chapters include general and theoretical descriptions of dielectric materials and their operation in microwave circuits. Coupling techniques, filter implementation and oscillator applications are covered in depth. The accompanying programs provided on disk implement the models presented in the book and identify the frequencies of all resonance modes. With renewed interest in dielectric resonator technology for modern wireless communications equipment, this book is an excellent reference for its understanding and application.