Title :
A circuit, waveguide, and spatial power combiner for millimeter-wave amplification
Author :
Saavedra, Carlos E. ; Wright, Warren ; Compton, Richard C.
Author_Institution :
Adv. Technol. Group, Millitech Corp., South Deerfield, MA, USA
fDate :
5/1/1999 12:00:00 AM
Abstract :
A new concept for a millimeter-wave amplifier that uses circuit, waveguide, and spatial power combining is demonstrated. The passive array has a free-space-to-microstrip insertion loss below -1.5 dB from 30 to 44 GHz. Small-signal measurements of the active array reveal an average gain of 5 dB from 41 to 46 GHz and a maximum gain of 6.4 dB at 45.6 GHz. Large-signal measurements reveal a linear power gain of 2 dB and an output power of 23.7 dBm at the 1-dB compression point at 44 GHz
Keywords :
millimetre wave power amplifiers; power combiners; -1.5 dB; 2 dB; 30 to 44 GHz; 5 to 6.4 dB; active array; circuit; free-space-to-microstrip insertion loss; large-signal measurement; millimeter-wave power amplifier; passive array; small-signal measurement; spatial power combiner; waveguide; Arrayed waveguide gratings; Coupling circuits; Gain measurement; Insertion loss; Millimeter wave circuits; Millimeter wave transistors; Power amplifiers; Power combiners; Power transmission lines; Waveguide transitions;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
