Sökning: "Digital Wideband Filtering"

Visar resultat 1 - 5 av 6 avhandlingar innehållade orden Digital Wideband Filtering.

  1. 1. Custom Designed Digital Signal Processors Using Bit-Serial Arithmetic

    Författare :Peter Nilsson; Institutionen för elektro- och informationsteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; On-Chip Clocking; Digital IF-Filtering; Digital Wideband Filtering; Elektronik; Electronics; Bit-Serial Arithmetic; CMOS; Custom DSP; VLSI;

    Sammanfattning : This thesis presents two prime contributions. First, digital filters for both intermediate and base band filtering for mobile communication are presented. Second, a local clock for on-chip clock generation is introduced. The intermediate frequency filter is a digital alternative to today's analog filters. LÄS MER

  3. 2. Wideband Sigma-Delta Modulators

    Författare :Xiaolong Yuan; Svante Signell; Jakob Wikner; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; sigma-delta modulator; feedforward; reconfigurable; quadrature bandpass filtering; Electronics; Elektronik;

    Sammanfattning : Sigma-delta modulators (SDM) have come up as an attractive candidatefor analog-to-digital conversion in single chip front ends thanks to the continuousimproving performance. The major disadvantage is the limited bandwidthdue to the need of oversampling. LÄS MER

  4. 3. Efficient Integrated Circuits for Wideband Wireless Transceivers

    Författare :Quoc-Tai Duong; Atila Alvandpour; Henrik Sjöland; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : The proliferation of portable communication devices combined with the relentless demand for higher data rates has spurred the development of wireless communication standards which can support wide signal bandwidths. Benefits of the complementary metal oxide semiconductor (CMOS) process such as high device speeds and low manufacturing cost have rendered it the technology of choice for implementing wideband wireless transceiver integrated circuits (ICs). LÄS MER

  5. 4. Synthesis and Realization of High-Speed Recursive Digital Filters

    Författare :Håkan Johansson; Lars Wanhammar; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Recursive digital filters restrict the sample frequency at which an implementation of the filters can operate. This bound is determined by the ratio between the number of delay elements and the operation latency in the recursive loops of the filters. LÄS MER

  7. 5. Multiband LNA Design and RF-Sampling Front-Ends for Flexible Wireless Receivers

    Författare :Stefan Andersson; Christer Svensson; Marc Tiebout; Linköpings universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; RF; Microelectronics; Multiband LNAs; RF-Sampling; Sampling Front-Ends; Flexible Wireless Receivers; Multistandard Receivers.; Electronics; Elektronik;

    Sammanfattning : The wireless market is developing very fast today with a steadily increasing number of users all around the world. An increasing number of users and the constant need for higher and higher data rates have led to an increasing number of emerging wireless communication standards. LÄS MER