Slow-wave coupler

A slow-wave coupler^[1] is a directional coupler consisting of microstrip lines in which there is a corrugation in the inner edges of the transmission lines where the coupling takes place. The objective is to reduce the phase velocity of the odd mode of the coupled lines to match that of the even mode, and thereby to improve the isolation and directivity of the coupler.

References

↑ Parveg, Dristy; Varonen, Mikko; Karaca, Denizhan; Halonen, Kari (March 2019). "Wideband mm-Wave CMOS Slow Wave Coupler - IEEE Microwave and Wireless Components Letters". pp. 210–212. doi:10.1109/LMWC.2019.2892845. {{cite web}}: Missing or empty |url= (help)

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[1] Parveg, Dristy; Varonen, Mikko; Karaca, Denizhan; Halonen, Kari (March 2019). "Wideband mm-Wave CMOS Slow Wave Coupler - IEEE Microwave and Wireless Components Letters". pp. 210–212. doi:10.1109/LMWC.2019.2892845. {{cite web}}: Missing or empty |url= (help)

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References