Low-frequency limitations of ultrabroadband matched microwave amplifiers
Abstract
A low-frequency analysis of the predominant structures of ultrabroadband matched amplifiers is presented. The results demonstrate clearly that the device transconductance is the most important characteristic to consider when selecting the amplifier configuration. A new configuration is suggested. The maximum power gain of ultrabroadband matched amplifiers is found to be limited by the MAG of the active device at the highest frequency of the band. It is also found that if the FETs have very low transconductances, the distributed amplifier is the unique solution.
- Publication:
-
Electronics Letters
- Pub Date:
- January 1982
- DOI:
- Bibcode:
- 1982ElL....18...31P
- Keywords:
-
- Amplifier Design;
- Broadband Amplifiers;
- Frequency Response;
- Impedance Matching;
- Microwave Amplifiers;
- Power Gain;
- Data Transmission;
- Equalizers (Circuits);
- Feedback Amplifiers;
- Field Effect Transistors;
- Low Frequencies;
- Matched Filters;
- Optical Communication;
- Standing Wave Ratios;
- Transistor Amplifiers;
- Electronics and Electrical Engineering