Author :
Kim, Moonil ; Rosenberg, James J. ; Smith, R. Peter ; Weikle, Robert M. ; Hacker, Jonathan B. ; DeLisio, Michael P. ; Rutledge, David B.
Author_Institution :
Div. Eng. & Appl. Sci., California Inst. of Technol., Pasadena, CA, USA
Abstract :
A 50-MESFET grid amplifier is reported that has a gain of 11 dB at 3.3 GHz. The grid isolates the input from the output by using vertical polarization for the input beam and horizontal polarization for the transmitted output beam. The grid unit cell is a two-MESFET differential amplifier. A simple calibration procedure allows the gain to be calculated from a relative power measurement. This grid is a hybrid circuit, but the structure is suitable for fabrication as a monolithic wafer-scale integrated circuit, particularly at millimeter wavelengths.<>
Keywords :
Schottky gate field effect transistors; electromagnetic wave polarisation; equivalent circuits; hybrid integrated circuits; microwave amplifiers; microwave integrated circuits; 11 dB; 3.3 GHz; 50-MESFET grid amplifier; MIC; calibration procedure; horizontal polarization; hybrid circuit; loaded periodic grids; relative power measurement; transmitted output beam; two-MESFET differential amplifier; vertical polarization; Calibration; Differential amplifiers; Fabrication; Gain; Hybrid integrated circuits; MIMICs; Millimeter wave measurements; Monolithic integrated circuits; Polarization; Power measurement;
Journal_Title :
Microwave and Guided Wave Letters, IEEE
