2011
DOI: 10.1587/transcom.e94.b.1184
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Transition from Waveguide to Two Microstrip Lines with Slot Radiators in the Millimeter-Wave Band

Abstract: Many kinds of microstrip array antennas have been developed in the millimeter-wave band. In order to avoid feeding loss and the decrease of antenna gain by beam shift due to frequency changes, center-fed array antennas are advantageous. In this case, the element spacing around the feeding circuit of the transition from the waveguide to two microstrip lines is larger than one wavelength. Therefore, the sidelobe level grows significantly. In order to suppress the sidelobe level, we propose transitions with slot … Show more

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