Title :
A GaAs phase digitizing and summing system for microwave signal storage
Author :
Vu, Tho T. ; Hattis, James M.
Author_Institution :
Honeywell Syst. & Res. Center, Minneapolis, MN, USA
Abstract :
The analysis, design, and development of a microwave signal storage prototype system using phase-quantization sampling are described. A GaAs 4-bit D/A converter has been demonstrated in a 3-bit DRFM (digital RF memory) prototype system with digital Si emitter-coupled logic (ECL) and RF microwave components at a sample rate of 200 MHz and exhibiting typically a -17-dBc harmonic suppression. A monolithic GaAs A/D and D/A converter has been demonstrated within an RF signal acquisition system. Performance data on the monolithic sampler reveal that the 3-bit quantization system exhibits signal reconstruction with harmonic suppression exceeding 25 dB across an IF bandwidth of greater than 900 MHz.<>
Keywords :
III-V semiconductors; digital-analogue conversion; gallium arsenide; integrated memory circuits; random-access storage; 200 MHz; 25 dB; 3-bit quantization system; 4-bit D/A converter; 900 MHz; DAC; DRFM; ECL; GaAs; RF microwave components; RF signal acquisition system; Si; bandwidth; digital RF memory; emitter-coupled logic; harmonic suppression; microwave signal storage; monolithic sampler; phase digitizing system; phase-quantization sampling; prototype system; sample rate; semiconductors; signal reconstruction; summing system; Gallium arsenide; Harmonics suppression; Logic; Prototypes; Quantization; Radio frequency; Sampling methods; Signal analysis; Signal design; Signal reconstruction;
Journal_Title :
Solid-State Circuits, IEEE Journal of
