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An ultra-wideband 45° phase shifter is presented in this letter. The phase shifter is designed using a multi-section broadside coupling structure that yields ultra-wideband bandpass response and constant phase shift. The measured reflection coefficient, insertion loss and phase variation are −12.5 dB, 0.67 dB, ±1.6° for the band from 2.85 to 10.70 GHz (112%), and −12.5 dB, 1 dB, ±5° for the band from...
This paper mainly studies the effect of the winding layer number on the performance of interior permanent-magnet (IPM) synchronous machines equipped with fractional-slot concentrated windings (FSCWs) for electric vehicle applications. In order to quantitatively evaluate FSCW-IPM machines with different numbers of winding layers, three models with single-, double-, and four-layer winding configurations...
This paper mainly studies the effect of the winding layer number on the performance of IPM synchronous machines equipped with fractional-slot concentrated windings (FSCW) for electric vehicle (EV) applications. In order to quantitatively evaluate FSCW-IPM machines with different numbers of winding layers, three models with single-, double- and four-layer winding configurations will be built, comparing...
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