Title: A quadrature modulator based scheme for frequency hopping applications
Authors: Soker, Burak
Kurt, Sinan
Selcuk, Gokhun
Citation: 2016 International Conference on Applied Electronics: Pilsen, 6th – 7th September 2016, Czech Republic, p.233-236.
Issue Date: 2016
Publisher: Západočeská univerzita v Plzni
Document type: konferenční příspěvek
URI: http://hdl.handle.net/11025/35288
ISBN: 978–80–261–0601–2 (Print)
978–80–261–0602–9 (Online)
ISSN: 1803–7232 (Print)
1805–9597 (Online)
Keywords: frekvenční modulace;fázově uzamčené smyčky;základní pásmo;šířka pásma;fázový šum;frekvenční syntetizátory
Keywords in different language: frequency modulation;phase locked loops;baseband;bandwidth;phase noise;frequency synthesizers
Abstract in different language: In this study a new frequency hopping scheme which relies on digital up-conversion of baseband data is proposed. Since the frequency of the local oscillator is kept constant and hopping is achieved in the baseband, the time required for the frequency jump is independent of the frequency step, allowing a narrow loop bandwidth and low noise performance for conventional phase locked loops (PLLs). Moreover the spurious signals resulting from the modulator is around -70 dBc, which is a lower value when compared to spurious signal performance of commercially available direct digital synthesis (DDS) integrated circuits. We have analyzed the error vector magnitude (EVM) and frequency hopping speed on a practical setup and have shown that quite satisfactory results can be obtained with the proposed scheme.
Rights: © Západočeská univerzita v Plzni
Appears in Collections:Applied Electronics 2016
Applied Electronics 2016

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