公开(公告)号：US11700022B2

公开(公告)日：2023-07-11

申请号：US17678034

申请日：2022-02-23

Applicant: RichWave Technology Corp.

Inventor： Chin-Lung Yang

IPC: H04B1/00 ,  H04B1/16

CPC classification number: H04B1/0057 ,  H04B1/163

Abstract: A diplexer includes a first filter circuit, and a second filter circuit. The first filter circuit is coupled to a first port for providing a first signal path for a first radio frequency (RF) signal. The second filter circuit is coupled to the first port for providing a second signal path for a second RF signal. The first filter circuit includes a first tunable resonant circuit for tuning a first transmission zero corresponding to a first frequency multiplication of the first RF signal. The second filter circuit includes a second tunable resonant circuit for tuning a first transmission zero corresponding to a first frequency multiplication of the second RF signal. The first frequency multiplication of the first RF signal corresponding to the first filter circuit is a fourth harmonic of the first RF signal.

公开(公告)号：US20230179232A1

公开(公告)日：2023-06-08

申请号：US17678034

申请日：2022-02-23

Applicant: RichWave Technology Corp.

Inventor： Chin-Lung Yang

IPC: H04B1/00 ,  H04B1/16

CPC classification number: H04B1/0057 ,  H04B1/163

Abstract: A diplexer includes a first filter circuit, and a second filter circuit. The first filter circuit is coupled to a first port for providing a first signal path for a first radio frequency (RF) signal. The second filter circuit is coupled to the first port for providing a second signal path for a second RF signal. The first filter circuit includes a first tunable resonant circuit for tuning a first transmission zero corresponding to a first frequency multiplication of the first RF signal. The second filter circuit includes a second tunable resonant circuit for tuning a first transmission zero corresponding to a first frequency multiplication of the second RF signal. The first frequency multiplication of the first RF signal corresponding to the first filter circuit is a fourth harmonic of the first RF signal.