Characterization of active device through load-pull for wideband applications using CAD simulator

• Autor(a) principal: Silva, Ester Almeida
• Data de Publicação: 2022
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10773/35789
• topic: Load-pull characterization; Memory effect; Power amplifiers; Wireless technology

With the evolution of communication technology applications, wireless telecommunication systems are expected to be more and more robust and performance/cost effective. As per the market survey, data traffic is evolving with the technology applications and is expected to go up to 100s of Exabyte/month by 2030. To support such high data traffic, wireless transceivers are expected with larger bandwidth, high spectral and power efficiency support. On the digital back-ends of the wireless communication, modulations schemes become more and more complex to improve the data rates. However, in the wireless communication, quality of services (QoS) is majorly determined by the physical layer, especially by components such as power amplifiers. With considering this fact, in this dissertation, characterization of the active device through the load-pull process is studied for understanding the behavior of increased wideband scenario. Load-pull is performed with LDMOS and GaN technology using computer-aided design tool (CAD) such as advanced design system (ADS). Baseband impedance is also studied with the two-tone analysis to study the memory effect that causes the degradation in linearity and efficiency.