A six-port junction based on substrate integrated waveguide technology with high reliability and efficient performance is proposed in a sub-K-band of 21-23.5 GHz. This substrate integrated waveguide (SIW) six-port junction is constructed from three directional couplers and one T-junction power divider as fundamental components in SIW form, where using appropriate via techniques led to -6 dB coupling coefficients and -15 dB return loss. There is good agreement between the simulation and the measurement results.
JAFARI, MASOUD; MORADI, GHOLAMREZA; SHIRAZI, REZA SARRAF; and MIRZAVAND, RASHID
"Design and implementation of a six-port junction based on substrate integrated waveguide,"
Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 25:
3, Article 75.
Available at: https://journals.tubitak.gov.tr/elektrik/vol25/iss3/75