1st International Workshop on Energy Efficient and Reconfigurable Transceivers

Research Article

Explanation of DC/RF Loci for Active Patch Antennas

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  • @INPROCEEDINGS{10.1007/978-3-642-35155-6_58,
        author={Nazar Ali and Abubakar Hussaini and Raed Abd-Alhameed and Neil McEwan and Mark Child and E. El-Khazmi and Jonathan Rodriguez},
        title={Explanation of DC/RF Loci for Active Patch Antennas},
        proceedings={1st International Workshop on Energy Efficient and Reconfigurable Transceivers},
        proceedings_a={EERT},
        year={2012},
        month={12},
        keywords={Active antenna power amplifier DC and RF power patch antenna},
        doi={10.1007/978-3-642-35155-6_58}
    }
    
  • Nazar Ali
    Abubakar Hussaini
    Raed Abd-Alhameed
    Neil McEwan
    Mark Child
    E. El-Khazmi
    Jonathan Rodriguez
    Year: 2012
    Explanation of DC/RF Loci for Active Patch Antennas
    EERT
    Springer
    DOI: 10.1007/978-3-642-35155-6_58
Nazar Ali1,*, Abubakar Hussaini2,*, Raed Abd-Alhameed3,*, Neil McEwan3,*, Mark Child3,*, E. El-Khazmi3, Jonathan Rodriguez2,*
  • 1: Khalifa University
  • 2: Instituto de Telecomunicações
  • 3: University of Bradford
*Contact email: ntali@kustar.ac.ae, ash@av.it.pt, r.a.a.abd@bradford.ac.uk, n.j.mcewan@bradford.ac.uk, m.b.child@bradford.ac.uk, jonathan@av.it.pt

Abstract

A characteristic loop locus of dc power versus RF output power was observed as the frequency was varied around the optimum point of an operational active antenna. A new technique was introduced into the simulation, plotting the dependence of parameters such as supply current, efficiency or output power on internal impedance as seen by the naked transistor. It is now clear that the loop was formed as a consequence of the interaction of the transistor packaging elements with the patch impedances.