Sökning: "direct-conversion"

Visar resultat 1 - 5 av 12 uppsatser innehållade ordet direct-conversion.

  1. 1. Evaluation of whole-body bone scans performed using a gamma camera with Cadmium Zinc Telluride detector

    Master-uppsats,

    Författare :Victor Asp; [2022-01-13]
    Nyckelord :Medical physics; whole-body bone scans; gamma camera; Cadmium Zinc Telluride detector;

    Sammanfattning : The bone scan is a common nuclear medicine imaging procedure that is mainly used for evaluating several oncological patient groups. A radioactive tracer, 99mTc -labelled diphosphonate, is injected intravenously and accumulates in the skeleton. The distribution of the tracer in the body is measured with a gamma camera 3 hours post-injection. LÄS MER

  3. 2. A Quadrature Frequency Generation Chain for Direct-conversion Phased-array 5G Transceivers

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Hamid Yadegar Amin; [2020]
    Nyckelord :5G Phased array mm-wave FR2; Technology and Engineering;

    Sammanfattning : The 5th generation (5G) has recently specified a new spectrum range, FR2- 5G New Radio (5G-NR), to provide higher spectral efficiency and channel capacity for ubiquitous cellular connectivity where the user ends can be in various types such as picocell stations, sensor nodes, cloud servers, hand-held devices, and so on. Due to the advantage of phased array antennas in performing beam-forming, and improving SNR at higher spectra, multi-antenna systems have gained an inevitable role in developing such radios. LÄS MER

  4. 3. A Linear, Wide-band, Low-Power Receiver for Narrowband- Internet of Things (NB-IoT)

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Rohan Raghunath; Ghanashyam Ravindranath Prabhu; [2018]
    Nyckelord :NB-IoT; FTNC; Harmonic rejection; N-path filtering; RX Front End; Low power; Wide-band; Passive mixer; Current mode; Technology and Engineering;

    Sammanfattning : Advancement of technology with the aid of new application, wireless communication has grown rapidly in the past two decades. Recently, in the wireless communication industry, Narrowband- Internet of Things (NB-IoT) is being discussed by everyone, as the most important emerging technology of the day. LÄS MER

  5. 4. Simulating Direct Conversion of Adult Fibroblasts to Neurons

    Magister-uppsats, Lunds universitet/Institutionen för astronomi och teoretisk fysik - Genomgår omorganisation

    Författare :Joakim Eriksson; [2017]
    Nyckelord :Computational; Biology; Direct; Conversion; Physics and Astronomy;

    Sammanfattning : Regenerative medicine offers a great prospect for curing diseases. Scientists are using direct conversion to reprogram fibroblasts, a kind of skin cell, into neurons in an attempt to cure Parkinson's disease. LÄS MER

  7. 5. Direct Conversion Front End for LTE and LTE-A with Frequency-Translational Feedback, Harmonic Rejection Mixer and Input Matching Compensation

    Master-uppsats, Lunds universitet/Institutionen för elektro- och informationsteknik

    Författare :Douglas Andersson Hägglund; [2016]
    Nyckelord :Technology and Engineering;

    Sammanfattning : This thesis covers the design of a wideband, flexible front end for LTE and LTE-A in a 65 nm CMOS process. A topology with global frequency translational feedback is investigated and a harmonic rejection mixer is implemented. LÄS MER