公开(公告)号：US20220123453A1

公开(公告)日：2022-04-21

申请号：US17198712

申请日：2021-03-11

申请人： Wi-LAN Research Inc.

发明人： Muhammad Rashad Ramzan ,  Muhammad Omar ,  Kenneth Stanwood

IPC分类号： H01P7/08 ,  H01P7/10 ,  H01P1/203

摘要： A ring resonator based T-shaped duplexer for use in communication systems, the T-shaped duplexer comprising a T-shaped microstrip duplexer body having a first rectangular-shaped body section and a second rectangular-shaped body section that extends from the first-rectangular shaped section in a perpendicular position relative to the first rectangular-shaped section, three connection ports including a first connection port disposed at an open end of the second rectangular-shaped body section, a second connection port disposed at one end of the first rectangular-shaped body section, and a third connection port disposed at another end of the first rectangular-shaped body section, and two bandpass filters, each bandpass filter comprising a ring resonator structure having a circular shape, an outer edge of the ring resonator structure being connected to the first rectangular-shaped body section of the T-shaped microstrip duplexer body, wherein each of the two bandpass filters creates an Electromagnetically Induced Transparency (EIT) window within a frequency absorption region of the bandpass filter to allow a signal to pass at a pre-tuned frequency band.