Title :
InP DHBT 68 GHz frequency divider
Author :
Tang, B. ; Notthoff, J. ; Gutierrez-Aitken, A. ; Kaneshiro, E. ; Chin, P. ; Oki, A.
Author_Institution :
Space & Electron. Group, TRW Inc., Redondo Beach, CA, USA
Abstract :
We report a 68 GHz 2:1 frequency divider with measured input sensitivity less than 6 dBm from 53-68 GHz. To our knowledge, this is the fastest digital frequency divider reported to date in any semiconductor technology. The divider is implemented in differential current mode logic (CML) using undercut collector InP Double Heterojunction Bipolar Transistor (DHBT) technology, with measured f/sub T/ of 150 GHz and f/sub max/ of 163 GHz at J/sub x/=1.2/spl times/10/sup 5/ A/cm/sup 2/. It draws 25.1 mA from a single -3 V supply, dissipating 75 mW. Test results were obtained for wafer probe using micro-coax probes.
Keywords :
III-V semiconductors; bipolar logic circuits; current-mode logic; frequency dividers; heterojunction bipolar transistors; indium compounds; -3 V; 150 GHz; 163 GHz; 25.1 mA; 68 GHz; 75 mW; DHBT; InP; differential current mode logic; digital frequency divider; double heterojunction bipolar transistor; input sensitivity; micro-coax probes; undercut collector technology; wafer probe; Circuits; Clocks; Couplings; Flip-flops; Frequency conversion; Indium phosphide; Latches; Master-slave; Propagation delay; Resistors;
Conference_Titel :
GaAs IC Symposium, 1999. 21st Annual
Conference_Location :
Monterey, CA, USA
Print_ISBN :
0-7803-5585-7
DOI :
10.1109/GAAS.1999.803756
