In this paper, a new design method for bridged-T coil (BTC) is proposed such that it can be made equivalent to two different transmission line sections at two different frequencies. In this way, on-chip dual-band branch-line coupler and dual-band power divider designs with very compact circuit sizes can be made possible through the use of BTCs. Specifically, the proposed 2.45/5.8-GHz dual-band branch-line coupler realized using the integrated passive device (IPD) process features a compact circuit size of only 2.8mm×1.4mm while the proposed 2.4/5.5-GHz dual-band power divider in IPD exhibits a very small circuit size of only 1.8mm×1.7mm. To the best of our knowledge, the proposed dual-band branch-line coupler is the smallest one ever reported while the circuit size of the proposed dual-band power divider is comparable to the smallest in the literature.
|頁（從 - 到）||889-901|
|期刊||IEEE Transactions on Microwave Theory and Techniques|
|出版狀態||已出版 - 2月 2018|