Title : 
A Low-Power UWB-IR Transmitter by Tapered Nonlinear Transmission Lines
         
        
            Author : 
Yu, F. ; Lyon, Keith G. ; Kan, Edwin C.
         
        
            Author_Institution : 
Electrical and Computer Engineering, Cornell University, Ithaca, United States
         
        
        
        
        
        
        
            Abstract : 
We present a low-power transmitter for the ultra-wide-band impulse radio utilizing tapered nonlinear transmission line (NLTL) designs. As the energy in each pulse scales with the inverse of frequency, the tapered NLTL achieves up to 40% energy improvement over a uniform NLTL transmitter. We fabricated three 10 GHz transmitters with different tapering factors in 0.13 
  
 m RF-CMOS technology and demonstrated 15 pJ of energy consumption per pulse.
 
        
            Keywords : 
Bandwidth; Broadband antennas; Energy consumption; Radio transmitters; Transmitting antennas; Varactors; Impulse radio (IR); tapered nonlinear transmission line (NLTL); ultra-wideband (UWB);
         
        
        
            Journal_Title : 
Microwave and Wireless Components Letters, IEEE
         
        
        
        
        
            DOI : 
10.1109/LMWC.2012.2226020