A Tunable Radio Frequency Filter
    
    
Patent type: Priority Patent Application
Patent number: EP1691482A1
Registration date: Feb. 1, 2006
    
        
Abstract
The present invention provides a filter unit cell. The filter unit cell includes a variable capacitor coupled in series between first and second nodes and an inductor coupled in series between the second node and a third node.
    
    
        
    
Invention
    
    
    
        
Patent holder(s)