Performance and circuit characteristics of CATTs
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 21% efficiency, 6 dB gain and 0.9 watts output were obtained. 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.
- Publication:
-
8th European Microwave Conference
- Pub Date:
- 1979
- Bibcode:
- 1979eumw.conf....7E
- Keywords:
-
- Amplifier Design;
- Bipolar Transistors;
- Electron Avalanche;
- Microwave Amplifiers;
- Performance Prediction;
- Power Efficiency;
- Capacitance;
- Equivalent Circuits;
- Metallizing;
- Power Amplifiers;
- Power Gain;
- Transistor Amplifiers;
- Transit Time;
- Electronics and Electrical Engineering