公开(公告)号：US20240056120A1

公开(公告)日：2024-02-15

申请号：US17819329

申请日：2022-08-12

Applicant: Intel Corporation

Inventor： Sashank KRISHNAMURTHY ,  Ofir DEGANI ,  Ashoke RAVI

IPC: H04B1/525 ,  H04B1/00 ,  H04B1/30

CPC classification number: H04B1/525 ,  H04B1/0078 ,  H04B1/30 ,  H04B2001/307

Abstract: A tunable bandpass low-noise amplifier (LNA). The LNA includes a plurality of N-path filters and a plurality of cascode amplifiers. The cascode amplifiers are configured to amplify an input signal. Each N-path filter is coupled to a different one of the plurality of cascode amplifiers. The plurality of N-path filters are driven by local oscillator (LO) signals having different frequencies, and output nodes of the plurality of cascode amplifiers are coupled in parallel. The frequencies of the LO signals may be symmetrically spaced around a desired frequency (fLO). Each N-path filter may be coupled to a source of the common-gate device of the coupled cascode amplifier. The LO signals may be generated by a digital-to-time converter (DTC)-based frequency synthesizer. The frequencies of the LO signals supplied to the N-path filters may be adjusted to tune the bandwidth of the bandpass LNA.

公开(公告)号：US20250112603A1

公开(公告)日：2025-04-03

申请号：US18374696

申请日：2023-09-29

Applicant: Intel Corporation

Inventor： Ashoke RAVI ,  Ofir DEGANI ,  Sashank KRISHNAMURTHY ,  Soumya GUPTA

IPC: H03F3/45 ,  H03F1/02 ,  H03F1/22

Abstract: An amplifier structure may include a first amplifier substructure having a first amplifier and a first filter structure and provide a first high frequency output signal and a first low frequency output signal having a frequency lower than a frequency of the first high frequency output signal. It may include a second amplifier substructure having a second amplifier and a second filter structure and provide a second high frequency output signal and a second low frequency output signal having a frequency lower than the frequency of the second high frequency output signal. It may include a first combination node configured to receive the first high frequency output signal and the second low frequency output signal and to provide a first amplified signal, and a second combination node configured to receive the first low frequency output signal and the second high frequency output signal and to provide a second amplified signal.