Compact Butler Matrix Using Lumped Elements
Corresponding Author
Edson R. Schlosser
Laboratory of Eletromagnetics, Microwave and Antennas - LEMA, Federal University of Pampa - Unipampa, Alegrete, Rio Grande do Sul, Brazil
Correspondence: Edson R. Schlosser ([email protected])
Search for more papers by this authorEduarda G. Peres
XMobots Aerospace and Defense, São Carlos, São Paulo, Brazil
Search for more papers by this authorNatalia F. da Silva
Laboratory of Eletromagnetics, Microwave and Antennas - LEMA, Federal University of Pampa - Unipampa, Alegrete, Rio Grande do Sul, Brazil
Search for more papers by this authorEduardo S. Sakomura
Laboratory of Eletromagnetics, Microwave and Antennas - LEMA, Federal University of Pampa - Unipampa, Alegrete, Rio Grande do Sul, Brazil
PlasmaHub Engineering and Industry, São José dos Campos, São Paulo, Brazil
Search for more papers by this authorMarcos V. T. Heckler
Laboratory of Eletromagnetics, Microwave and Antennas - LEMA, Federal University of Pampa - Unipampa, Alegrete, Rio Grande do Sul, Brazil
Search for more papers by this authorCorresponding Author
Edson R. Schlosser
Laboratory of Eletromagnetics, Microwave and Antennas - LEMA, Federal University of Pampa - Unipampa, Alegrete, Rio Grande do Sul, Brazil
Correspondence: Edson R. Schlosser ([email protected])
Search for more papers by this authorEduarda G. Peres
XMobots Aerospace and Defense, São Carlos, São Paulo, Brazil
Search for more papers by this authorNatalia F. da Silva
Laboratory of Eletromagnetics, Microwave and Antennas - LEMA, Federal University of Pampa - Unipampa, Alegrete, Rio Grande do Sul, Brazil
Search for more papers by this authorEduardo S. Sakomura
Laboratory of Eletromagnetics, Microwave and Antennas - LEMA, Federal University of Pampa - Unipampa, Alegrete, Rio Grande do Sul, Brazil
PlasmaHub Engineering and Industry, São José dos Campos, São Paulo, Brazil
Search for more papers by this authorMarcos V. T. Heckler
Laboratory of Eletromagnetics, Microwave and Antennas - LEMA, Federal University of Pampa - Unipampa, Alegrete, Rio Grande do Sul, Brazil
Search for more papers by this authorABSTRACT
This paper describes the design of a new compact circuit for Butler Matrix using few lumped elements to operate at 2.4 GHz. It is demonstrated that acceptable performance could be only achieved by proper electromagnetic modeling of the lumped components using metallic pads and resistor, inductor, and/or capacitor surfaces in Ansys HFSS, to allow compensating for parasitic and coupling effects. The input selection of the proposed architecture is realized digitally using an absorptive switch. The designed circuit has been used to feed a microstrip antenna array to demonstrate the beam switching capability. Very good agreement between the expected and measured results has been verified.
Conflicts of Interest
The authors declare no conflicts of interest.
Open Research
Data Availability Statement
Data sharing is not applicable to this article as no new data were created or analyzed in this study.
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