New uniplanar coplanar waveguide hybrid-ring couplers and magic-T's

@article{citeulike:2822775, abstract = {The uniplanar coplanar waveguide (CPW) and slotline on a dielectric substrate have many applications to MIC and MMIC designs. A new reverse-phase CPW hybrid-ring coupler and a uniplanar CPW magic-T were developed. Experimental results showed that the hybrid-ring coupler has a 60\% bandwidth centered at 3 GHz and the magic-T has a bandwidth of one octave from 2 to 4 GHz with 0.4 dB amplitude imbalance and 3.5\° phase imbalance. Also, this paper presents theoretical analyses of CPW-slotline transitions using the transmission line models. Accurate modeling of nonuniform CPW and slotline radial stubs was developed using tandem connected uniform lines. Measured results of various CPW-slotline transitions agree very well with calculation. Design curves of the transitions are given for practical applications. To fully use the advantages of uniplanar structures, a 180\° reverse-phase CPW-slotline back-to-back balun and a tee junction are described. Both circuits provide good amplitude and phase characteristic over a broad bandwidth due to the phase change of the circuits being independent of frequency}, author = {Ho, Chien-Hsun and Fan, Lu and Chang, Kai }, booktitle = {Microwave Theory and Techniques, IEEE Transactions on}, citeulike-article-id = {2822775}, doi = {10.1109/22.339779}, journal = {Microwave Theory and Techniques, IEEE Transactions on}, keywords = {coplanar, coupler, ratrace}, number = {12}, pages = {2440--2448}, posted-at = {2008-05-22 11:40:05}, priority = {2}, title = {New uniplanar coplanar waveguide hybrid-ring couplers and magic-T's}, url = {http://dx.doi.org/10.1109/22.339779}, volume = {42}, year = {1994} }

TY - JOUR ID - citeulike:2822775 L3 - citeulike-article-id:2822775 TI - New uniplanar coplanar waveguide hybrid-ring couplers and magic-T's T2 - Microwave Theory and Techniques, IEEE Transactions on JF - Microwave Theory and Techniques, IEEE Transactions on VL - 42 IS - 12 SP - 2440 EP - 2448 N2 - The uniplanar coplanar waveguide (CPW) and slotline on a dielectric substrate have many applications to MIC and MMIC designs. A new reverse-phase CPW hybrid-ring coupler and a uniplanar CPW magic-T were developed. Experimental results showed that the hybrid-ring coupler has a 60% bandwidth centered at 3 GHz and the magic-T has a bandwidth of one octave from 2 to 4 GHz with 0.4 dB amplitude imbalance and 3.5° phase imbalance. Also, this paper presents theoretical analyses of CPW-slotline transitions using the transmission line models. Accurate modeling of nonuniform CPW and slotline radial stubs was developed using tandem connected uniform lines. Measured results of various CPW-slotline transitions agree very well with calculation. Design curves of the transitions are given for practical applications. To fully use the advantages of uniplanar structures, a 180° reverse-phase CPW-slotline back-to-back balun and a tee junction are described. Both circuits provide good amplitude and phase characteristic over a broad bandwidth due to the phase change of the circuits being independent of frequency KW - coplanar KW - coupler KW - ratrace AU - Ho, Chien-Hsun AU - Fan, Lu AU - Chang, Kai PY - 1994/// UR - http://dx.doi.org/10.1109/22.339779 ER -