Sökning: "Björn Almgren"

Hittade 2 uppsatser innehållade orden Björn Almgren.

1. 1. Håga in context – An analysis of the Håga complex in the Bronze Age landscape of the Mälar Valley region

   Master-uppsats, Uppsala universitet/Arkeologi

   Författare :Rachel Elliott; [2020]
   Nyckelord :Håga complex; King Björn’s mound; Bronze Age; Middle Sweden; Mälar Valley region; ritual landscapes; ritual practice theory; Hågakomplexet; Kung Björns hög; bronsåldern; Mellansverige; Mälardalen; rituell landskapet; rituellpraktiksteori;

   Sammanfattning : The Bronze Age in Middle Sweden is characterized by several key sites and monuments which have been interpreted by previous research to play an overarching role in the elite ruling system in the Mälar Valley region. King Björn’s mound (a.k.a. LÄS MER

3. 2. Dynamic load modulation

   Magister-uppsats, Institutionen för teknik och byggd miljö

   Författare :Björn Almgren; [2007]
   Nyckelord :load modulation; load tracking; power added efficiency; high efficiency; PA; power amplifier; switch mode; switching; dlm; lm; et; envelope tracking; modulation; load; efficiency; PAE;

   Sammanfattning : The purpose of this master thesis was to study if the drain efficiency of power amplifiers can be maintained at power back off using a technique called load modulation. The amplifier classes studied are E, F and D-1. The target figure was to obtain a 10 to 12 dB dynamic range of amplitude with reasonable efficiency. LÄS MER