A Novel Low-Power Notch-Enhanced Active Filter for Ultrawideband Interferer Rejected LNA
| العنوان: | A Novel Low-Power Notch-Enhanced Active Filter for Ultrawideband Interferer Rejected LNA |
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| المؤلفون: | Tao Tan, Yubing Li, Deyang Chen, Zihang Qi, Cheng Cao, Xiuping Li, Zemeng Huang |
| المصدر: | IEEE Transactions on Microwave Theory and Techniques. 69:1684-1697 |
| بيانات النشر: | Institute of Electrical and Electronics Engineers (IEEE), 2021. |
| سنة النشر: | 2021 |
| مصطلحات موضوعية: | Physics, Power gain, Radiation, Amplifier, 020206 networking & telecommunications, 02 engineering and technology, Condensed Matter Physics, Topology, Noise figure, Band-stop filter, Filter (video), 0202 electrical engineering, electronic engineering, information engineering, Cascode, Electrical and Electronic Engineering, Wideband, Active filter |
| الوصف: | In this article, a novel low-power notch-enhanced active filter is presented using the feedback notch-enhanced (FNE) technique. The active notch filter is proposed based on an area-saving second-order $LC$ series resonator. The passive devices’ loss can be effectively eliminated by the generated dc power-independent negative resistance by inserting a current feedback transistor. Moreover, the capacitive source degeneration (CSD) technique is proposed to boost the filter $Q$ by shifting the series resonant frequency to the negative-resistance region. To demonstrate the feasibility and practicability of the proposed notch filter, a 3.1–10.6-GHz IEEE 802.11a interferer rejected low-noise amplifier (IR-LNA) is fabricated in a 0.13- $\mu {\hbox {m}}$ CMOS process. The multistage structure, consisting of a common-gate (CG) stage with a dual-resonance load and a cascode stage with the proposed active notch filter, is employed for wideband input matching, gain flatness, and interferer rejection (IR) simultaneously. The measurements show that the IR-LNA provides a maximum of 16.05-dB power gain, 2.08–3.70-dB noise figure (NF) in the desired band, and a maximum of 40.9-dB IR ratio (IRR) at 5.77 GHz, with a power consumption of 10.2 mW, while the active notch filter only consumes 456- $\mu {\hbox {A}}$ current. |
| تدمد: | 1557-9670 0018-9480 |
| DOI: | 10.1109/tmtt.2021.3053264 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_________::37ccf65caa28c56240dc638d8e68446e https://doi.org/10.1109/tmtt.2021.3053264 |
| Rights: | CLOSED |
| رقم الانضمام: | edsair.doi...........37ccf65caa28c56240dc638d8e68446e |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15579670 00189480 |
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| DOI: | 10.1109/tmtt.2021.3053264 |