Ku-Band Cascode Balanced SiGe Power Amplifier with High Robustness to Active SWR

This paper presents the first efficient Ku-Band SiGe cascode power amplifier (PA) with a highly robust power combination to the active SWR. Two twisted couplers distribute 70.2um 2 emitter area in a balanced architecture to achieve reduced impedance transformation through baluns. As proof of concept...

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Bibliographic Details
Published in2021 19th IEEE International New Circuits and Systems Conference (NEWCAS) pp. 1 - 4
Main Authors Coquillas, B., Kerherve, E., Itcia, E., Roussel, L., Louis, B., Merlet, T.
Format Conference Proceeding
LanguageEnglish
Published IEEE 13.06.2021
Subjects
Active SWR
balanced architecture
BiCMOS integrated circuits
Circuits and systems
Conferences
Couplers
distributed power cell
Layout
power amplifier
Power amplifiers
Robustness
twisted coupler
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Summary:This paper presents the first efficient Ku-Band SiGe cascode power amplifier (PA) with a highly robust power combination to the active SWR. Two twisted couplers distribute 70.2um 2 emitter area in a balanced architecture to achieve reduced impedance transformation through baluns. As proof of concept, the PA was simulated with the 0.13-um SiGe BiCMOS technology. The post layout simulations show a saturated power (Psat) of 25.6dBm and a peak PAE of 30% at 18GHz and 90°C. With a 2:1 SWR the PAE and Pout drop less than 5.5% and 1.1dBm, respectively.
DOI:10.1109/NEWCAS50681.2021.9462752