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Ann P. Shen
Publications - 15
Citations - 184
Ann P. Shen is an academic researcher. The author has contributed to research in topics: Signal & Crystal oscillator. The author has an hindex of 8, co-authored 15 publications receiving 184 citations.
Papers
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Patent
Radio frequency receiver architecture
TL;DR: In this paper, a common-gate low-noise amplifier (LNA) is configured to receive an RF input signal and produce an amplified RF signal, and a down-converting passive mixer is used to mix the amplified received RF inputs with a local oscillator signal generated by a local Oscillator to generate a downconverted amplified signal.
Patent
Variable gain amplifier
TL;DR: In this article, the authors presented a method for receiving a signal at a first component with an adjustable gain, and adjusting the gain of the second component to a second gain value using a second step.
Patent
Crystal Oscillator Frequency Tuning Circuit
David H. Shen,Ann P. Shen +1 more
TL;DR: In this paper, the authors present a method for tuning a frequency of a crystal oscillator from a nominal frequency via a switched-capacitor frequency tuning circuit, which can have switchable sections to adjust the tuning of the crystal oscillators.
Patent
Tunable multi-band receiver by on-chip selectable filtering
David H. Shen,Ann P. Shen +1 more
TL;DR: In this paper, a multiple frequency RF communications receiver is described, which permits greater integration on standard silicon chips and consumes less power than previous receivers, and a method for selecting the various frequency bands with a high amount of isolation and low power consumption is described.
Patent
Digital tuning of crystal oscillators
David H. Shen,Ann P. Shen +1 more
TL;DR: In this paper, the authors present a method for making a digitally tuned crystal oscillator circuit, which involves receiving a multi-bit input signal into a digital modulator, modulating the multi-bits input signal with the digital modulators by oversampling or by noiseshaping and oversampled to produce a digitally-modulated output signal having a lower number of bits than the original input signal.