Title :
Ka/Q-band doubly balanced MMIC mixers with low LO power
Author :
Yu, M. ; Walden, Robert H. ; Schmitz, A.E. ; Lui, M.
Author_Institution :
HRL Lab., LLC, Malibu, CA, USA
fDate :
10/1/2000 12:00:00 AM
Abstract :
An InP-based broadband double-balanced mixer was developed having interchangeable RF/LO-ports and covering frequencies from 30 to 45 GHz, with a conversion loss of 12±2 dB at the low LO power of 4 dBm. This broadband characteristic was achieved through the use of side-coupled baluns for both the RF and LO ports. The ring quad-diodes used state-of-the-art superlattice layers, which provided good control of turn-on voltage and were monolithically integrable with in-house HEMT´s and HBT´s. The diodes exhibited a very low turn-on voltage of 0.15 V at 1 mA, low series resistance, and high cutoff frequencies
Keywords :
III-V semiconductors; MIMIC; MMIC mixers; Schottky diode mixers; baluns; indium compounds; integrated circuit design; millimetre wave mixers; 0.15 V; 1 mA; 12 dB; 30 to 45 GHz; InP; InP-based broadband mixer; Ka-band; Q-band; doubly balanced MMIC mixers; interchangeable RF/LO-ports; low LO power; ring quad-diodes; superlattice layers; turn-on voltage control; Diodes; Frequency conversion; HEMTs; Impedance matching; Low voltage; MMICs; Mixers; Radio frequency; Superlattices; Voltage control;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
