Title :
Integrated balanced sampling circuit for ultra-wideband communications and radar systems
Author :
Han, Jeongwoo ; Nguyen, Cam
Author_Institution :
Dept. of Electr. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
A balanced sampling circuit realized using step recovery and Schottky diodes on coplanar waveguide, coplanar strips, and slotlines is presented for ultra-wideband communications and radar applications. An efficient design was implemented to achieve improved performance. The impulse generator, providing signal for the sampling gate, was designed with a new LO feeding structure. The fabricated circuit shows 16-19 dB conversion loss without amplifier and 1-4 dB conversion gain with amplifier across 9-GHz RF bandwidth with 500-MHz sampling frequency.
Keywords :
MMIC; Schottky diodes; coplanar waveguides; microstrip lines; mixers (circuits); 1 to 4 dB; 16 to 19 dB; 500 MHz; 9 GHz; LO feeding structure; Schottky diodes; coplanar strips; coplanar waveguide; impulse generator; integrated balanced sampling circuit; radar systems; sampling mixer; slotlines; step recovery; ultra-wideband communications; Circuits; Coplanar waveguides; Radar applications; Radiofrequency amplifiers; Sampling methods; Schottky diodes; Signal generators; Slotline; Strips; Ultra wideband technology; Impulse generator; UWB; radar; sampling circuit; sampling mixer; ultra-wideband;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2004.834545
