Low-noise GaInP/GaAS HBT wideband dual feedback amplifiers using Kukielka and Meyer topologies
✍ Scribed by Jin-Siang Syu; Tzung-Han Wu; Chinchun Meng; Guo-Wei Huang
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 221 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
GaInP/GaAs HBT inductorless wideband amplifiers using shunt-series shunt-shunt dual-feedback topology (Kukielka topology) and shunt-series series-shunt dual-feedback topology (Meyer topology) are demonstrated in this article. Three amounts of feedback are applied on each topology. At the high-gain mode, the Kukielka/Meyer wideband amplifier achieves the small-signal power gain of 30/27 dB with the 3-dB bandwidth of 6 GHz at a 5 V supply. The noise figure of both amplifiers is lower than 3 dB within 6 GHz. To increase the amount of feedback widens the bandwidth at the cost of power gain and noise figure degradation.