Improved methods for tuning microwave devices

A new generation of frequency agile airborne radars has created a need for magnetrons with fast random tuning and accurately monitored output frequencies. This paper will discuss various means of tuning microwave cavities specifically applied to coaxial magnetrons. A number of different tuning arrangements presently being sold will be briefly discussed with emphasis placed on the new whisper tuner. Advantages and disadvantages of the various designs will be pointed out in light of present system requirements.