Title :
Performance and Circuit Charasteristics of CATTS
Author :
Eshbach, J.R. ; Yu, S.P. ; Cady, W.R. ; Lavoo, N.T.
Author_Institution :
General Electric Company, Schenectady, New York, U.S.A.
Abstract :
New results in the 3-5 GHz region, obtained on CATT cells designed for improved efficiency as microwave power amplifiers, are reported. At 3.0 GHz collector efficiencies of 39% have been measured with 12 dB gain and 1.4 watts peak output power per cell. At 5.0 GHz the results are: 2l% efficiency, 6 dB gain and 0.9 watts output. The improved performance is due to reduced collector-base capacitance and increased emitter periphery using a self-registered emitter-base metallization approach. Operating characteristics of CATTS are discussed and compared with normal bipolar transistors.
Keywords :
Bipolar transistors; Capacitance; Circuits; Gain; Impedance; Metallization; Power amplifiers; Power generation; Power measurement; Voltage;
Conference_Titel :
Microwave Conference, 1978. 8th European
Conference_Location :
Paris, France
DOI :
10.1109/EUMA.1978.332519
