A New Design of Compact <svg style="vertical-align:-0.45pt;width:46.849998px;" id="M1" height="16.112499" version="1.1" viewBox="0 0 46.849998 16.112499" width="46.849998"  xmlns="http://www.w3.org/2000/svg">
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                <tspan style="font-size: 17.93px; " x="0" y="0">𝟒</tspan>
                <tspan style="font-size: 17.93px; " x="12.947626" y="0">×</tspan>
                <tspan style="font-size: 17.93px; " x="28.405872" y="0">𝟒</tspan>
            </text>

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</svg> Butler Matrix for ISM Applications

<table>Simulated
results of Butler matrix phase signal at port 1, (a) simulation with ADS and (b)
with IE3D.</table>

International Journal of Microwave Science and Technology

fig9

Figure 9

Figure 9: A New Design of Compact <svg style="vertical-align:-0.45pt;width:46.849998px;" id="M1" height="16.112499" version="1.1" viewBox="0 0 46.849998 16.112499" width="46.849998"  xmlns="http://www.w3.org/2000/svg">
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            <text transform="matrix(1,0,0,-1,-71.95,59.61)">
                <tspan style="font-size: 17.93px; " x="0" y="0">𝟒</tspan>
                <tspan style="font-size: 17.93px; " x="12.947626" y="0">×</tspan>
                <tspan style="font-size: 17.93px; " x="28.405872" y="0">𝟒</tspan>
            </text>

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</svg> Butler Matrix for ISM Applications 

Figure 9 | A New Design of Compact 
    
        
            
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 Butler Matrix for ISM Applications 

International Journal of Microwave Science and Technology

A New Design of Compact 𝟒 × 𝟒 Butler Matrix for ISM Applications

Figure 9

A New Design of Compact Butler Matrix for ISM Applications