In-line signal circuit for broad-band parametric amplifiers
Abstract
A new double-tuned parametric amplifier signal-circuit configuration and a method for its experimental optimization is described. A new in-line signal circuit, which is adapted from a quarter-wave-coupled bandpass filter, is intended for use at higher microwave and millimeter-wave parametric amplifiers (paramps). It is shown that, using this signal circuit, a broader flat-gain response can be obtained as compared with the conventional double-tuned signal circuit with broad-banding stub placed multihalf-wavelength apart from the diode. To suppress the spurious response, a semilumped approximation is applied in the design. Finally, a 'cold and hot' test method to optimize the double-tuned signal circuit is introduced.
- Publication:
-
IEEE Transactions on Microwave Theory Techniques
- Pub Date:
- March 1975
- DOI:
- 10.1109/TMTT.1975.1128549
- Bibcode:
- 1975ITMTT..23..282E
- Keywords:
-
- Amplifier Design;
- Bandpass Filters;
- Broadband Amplifiers;
- Microwave Amplifiers;
- Parametric Amplifiers;
- Bandwidth;
- Frequency Response;
- Microwave Resonance;
- Millimeter Waves;
- Network Synthesis;
- Optimization;
- Power Gain;
- Electronics and Electrical Engineering