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208 IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, VOL. 11, NO. 5, MAY 2001 Novel Low-Cost Ultra-Wideband, Ultra-Short-Pulse
 

Summary: 208 IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, VOL. 11, NO. 5, MAY 2001
Novel Low-Cost Ultra-Wideband, Ultra-Short-Pulse
Transmitter with MESFET Impulse-Shaping
Circuitry for Reduced Distortion and Improved Pulse
Repetition Rate
Jeong Soo Lee and Cam Nguyen
Abstract--A new ultra-wideband, ultra-short-pulse transmitter
has been developed using microstrip lines, step-recovery and
Schottky diodes, MESFET, and monolithic microwave integrated
circuit (MMIC) amplifier. This transmitter employs a novel
MESFET impulse-shaping circuit to achieve several unique
advantages, including less distortion, easy broadband matching,
and increased pulse repetition rate. The transmitter produces
300-ps monocycle pulses with about 2 V peak-to-peak and a
pulse repetition rate of 10 MHz. The measured pulses have good
symmetry and low ringing level.
Index Terms--Ground penetrating radar, MIC, pulse generator,
transmitter, ultra-wideband radar.
I. INTRODUCTION
ULTRA-wideband (UWB), ultra-short pulses are very at-

  

Source: Arslan, Hüseyin - Department of Electrical Engineering, University of South Florida

 

Collections: Engineering