An All-Pass Topology to Design a 0-360° Continuous Phase Shifter with Low Insertion Loss and Constant Differential Phase Shift

Khaled Khoder 1 Marc Le Roy 1, * André Pérennec 1
* Auteur correspondant
1 Lab-STICC_UBO_MOM_DIM
Lab-STICC - Laboratoire des sciences et techniques de l'information, de la communication et de la connaissance, UBO - Université de Brest
Abstract : In this paper, an analog phase shifter is designed by using a novel all-pass topology. The phase shift can be continuously adjusted from 0 up to 380° by biasing varactor-diodes while maintaining the differential phase shift constant across the 6.7 GHz - 7.7 GHz band. This two-stage circuit is simple and compact with respectively insertion losses of 2.9 dB +- 1.3 dB, return losses better than 9.4 dB and a differential phase shift flatness of +- 11° in the worst case. With a 90.5°/dB Figure-of-Merit, this topology presents an interesting trade-off between low-cost, low loss, large phase-shift range, phase flatness and bandwidth. Measurements are discussed and carefully compared to current competing topologies.
Type de document :
Communication dans un congrès
44th European Microwave Conference, European Microwave Week, Oct 2014, Rome, Italy. pp.1-4, 2014, 〈10.1109/EUMC.2014〉
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Khaled Khoder, Marc Le Roy, André Pérennec. An All-Pass Topology to Design a 0-360° Continuous Phase Shifter with Low Insertion Loss and Constant Differential Phase Shift. 44th European Microwave Conference, European Microwave Week, Oct 2014, Rome, Italy. pp.1-4, 2014, 〈10.1109/EUMC.2014〉. 〈hal-01071273〉

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