Compact Down-Conversion Mixer Design Employing a Wide and Deep Stop-Band DGS-LPF
Mouloud Challal 1, Mokrane Dehmas 1, Arab Azrar 1,
Rabia Aksas 2, and
Mohamed Trabelsi 2
1. Dept. of Electronics, Signals and Systems Laboratory, IGEE, University of Boumerdes, Boumerdes, Algeria
2. Dept. of Electronics, Ecole Nationale Polytechnique, Algiers, Algeria
2. Dept. of Electronics, Ecole Nationale Polytechnique, Algiers, Algeria
Abstract—This paper investigates a compact 24-GHz hybrid down-conversion mixer. The proposed mixer is based on a wide and deep stop-band low pass filter, four Schottky diodes, two hybrid couplers and an open stub. The unwanted harmonics are rejected by means of a filter based on three uniforms dumbbell-shaped defected ground structure and a compensated microstrip line. A good conversion loss of 2.19dB, 1-dB compression point of 3-dBm and an LO-to-RF isolation better than 35dB are obtained. The validity of the mixer configuration and the design procedure are confirmed by a comparison between simulation results and measurements data reported in literature.
Index Terms—open stub, coupler, Defected Ground Structure (DGS), Low Pass Filter (LPF)
Cite: Mouloud Challal, Mokrane Dehmas, Arab Azrar, Rabia Aksas, and Mohamed Trabelsi, "Compact Down-Conversion Mixer Design Employing a Wide and Deep Stop-Band DGS-LPF," International Journal of Electronics and Electrical Engineering, Vol. 4, No. 6, pp. 520-524, December 2016. doi: 10.18178/ijeee.4.6.520-524
Cite: Mouloud Challal, Mokrane Dehmas, Arab Azrar, Rabia Aksas, and Mohamed Trabelsi, "Compact Down-Conversion Mixer Design Employing a Wide and Deep Stop-Band DGS-LPF," International Journal of Electronics and Electrical Engineering, Vol. 4, No. 6, pp. 520-524, December 2016. doi: 10.18178/ijeee.4.6.520-524
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