公开(公告)号：US11502716B2

公开(公告)日：2022-11-15

申请号：US17123915

申请日：2020-12-16

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Viswanathan Venkatesh Kumar ,  Deep Banerjee ,  Shishir Goyal ,  Sreeram Nasum Subramanyam

IPC: H04B1/40 ,  H04B3/56 ,  H04B3/54 ,  H03K5/24

Abstract: An on-off keying (OOK) receiver circuit includes a band-pass filter and an envelope detector. The band-pass filter includes a high-pass filter, a low-pass filter, and a switch. The high-pass filter is configured to filter an OOK input signal. The low-pass filter is configured to filter an output signal of the high-pass filter. The switch is coupled to an output of the high-pass filter, and is configured to, with each cycle of the OOK input signal, dissipate energy stored in the band-pass filter. The envelope detector is configured to receive a filtered OOK input signal from the band-pass filter, and to generate an OOK output signal based on the filtered OOK input signal.