Title : 
Oscillators to maintain precise time and frequency-an overview
         
        
        
            Author_Institution : 
NPL, Teddington, UK
         
        
        
        
        
        
            Abstract : 
Gives a broad indication of the relative stabilities of time and frequency devices available for use in the microwave region, and also their relative susceptibilities to environmental effects. The devices examined include quartz crystal oscillators, the caesium beam standard, the rubidium gas cell, and the hydrogen maser
         
        
            Keywords : 
caesium; crystal resonators; frequency stability; hydrogen; masers; measurement standards; microwave oscillators; quartz; rubidium; time measurement; Cs; H2; Rb; automatic standards; caesium beam standard; environmental effects; hydrogen maser; microwave region; quartz crystal oscillators; rubidium gas cell;
         
        
        
        
            Conference_Titel : 
Precise Time and Frequency - the Beat of a Single Drum, IEE Colloquium on
         
        
            Conference_Location : 
London