Essays about: "Load-Pull"

Found 5 essays containing the word Load-Pull.

  1. 1. Towards a method for antenna impedance tailoring through shapeoptimization, with a bound on the associated cost-function

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : Cem Kesici; [2020]
    Keywords : ;

    Abstract : Over the last years, there has been an interest in designing antennas that operateat higher frequencies. In most applications, these antennas work jointly withPower Amplifiers. However, most commercial Power Amplifiers have a nonstandardoptimal load-pull impedance in their optimal operating frequencies. READ MORE

  3. 2. Nonlinear effects and predictions in advanced antenna systems in 5G Distortion Effects in 5G

    University essay from Mittuniversitetet/Institutionen för informationssystem och –teknologi

    Author : Altahra Mohammed; [2019]
    Keywords : PA; DPD; Active load-pull; Calibration.;

    Abstract : In the next-generation wireless cellular communication systems known as 5G, radio equipment will be deployed in several frequency bands, among them is the millimeter wave bands (26 - 40 GHz). The use of these high frequencies can help to mitigate the limited spectrum problem and higher data rates can be achieved [2] . READ MORE

  4. 3. Development of a wideband high power amplifier for cancer treatment.

    University essay from Avdelningen för elektronik, matematik och naturvetenskap

    Author : Sohil Shahabi Ghahfarokhi; [2013]
    Keywords : wideband; high power; amplifier; hyperthermia;

    Abstract : Medical hyperthermia refers to heating of tumors to temperature levels which are lethal to the cells for sufficient periods of time or rendering the cancerous cells more sensitive to ionizing radiation or chemotherapy. In order to increase the temperature in cancerous tissues, high power solid state microwave amplifiers need to be used. READ MORE

  5. 4. Harmonic matching network for an amplifier

    University essay from Avdelningen för elektronik, matematik och naturvetenskap

    Author : Hongxu Zhu; [2012]
    Keywords : harmonic matching;

    Abstract : Nowadays, ‘green’ communication is of great importance to save electric energy. In communication systems, power amplifiers (PAs) play an important role and consume large amount of power. As a consequence, the enhancement of amplifier efficiency is significantly important for saving energy. READ MORE

  6. 5. GaN HEMT and MMIC Design and Evaluation

    University essay from Institutionen för teknik och byggd miljö

    Author : Giorgi Aroshvili; [2008]
    Keywords : GaN; GaN HEMT; LoadPull;

    Abstract : Gallium Nitride based devices due to their inherent material properties are considered as one of the most promising devices to realize high power, high frequency transistors with lower power consumption in next-generation applications. Although the technology has been studied since early 1970s, there is still a vast room and expectations in its yet unachieved findings. READ MORE