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Newly developed MMIC spiral directional couplers with tight coupling factors are designed, fabricated and characterized using multilayer CPW technology. The effects of component geometry parameters are carefully analysed using ADS Momentum. Multilayer CPW spiral couplers are reported with compact circuit size while tight coupling effect is maintained. The spiral coupler structure is applied in the...
Compact pHEMT amplifiers, which are composed of newly developed miniaturized multilayer inductors and capacitors, have been designed, fabricated and characterised. Their measured performances are presented and compared with those of amplifiers composed of conventional planar components. The results show that multilayer technology reduces the size of the amplifiers by approximately 50% while maintaining...
Newly developed spiral Marchand baluns using the great flexibility of three-dimensional multilayer technology have been designed, optimized, fabricated, and measured. This paper demonstrates a monolithic microwave integrated circuits (MMIC) coplanar waveguide (CPW) spiral Marchand balun with good balance performance in a wide frequency range and compact size. Even/odd mode characteristic impedance...
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