# A Compact Rat-Race Coupler with Harmonic Suppression for GSM Applications: Design and Implementation Using Artificial Neural Network

> Research article (Micromachines, 2023) · cited 10× · AI/ML

**Wikidata**: [openalex:W4382068493](https://www.wikidata.org/wiki/openalex:W4382068493)  
**Source**: https://4ort.xyz/entity/a-compact-rat-race-coupler-with-harmonic-suppression-for-gsm-applications-design-and-implementation-using-artificial-neu