This paper deals with SiGe HBTs optimization for power amplifier applications dedicated to wireless communications. In this work. we investigate the fT-BVCEO tradeoff by various collector optimization schemes such as epilayer thickness and dopant concentration. and SIC and CAP characteristics. https://safeersappliancers.shop/product-category/smeg-sf9315xr-90cm-reduced-height-classic-multifunction-oven/