A Ka-Band Switchable LNA With 2.4-dB NF Employing a Varactor-Based Tunable Network
In: IEEE Microwave and Wireless Components Letters, Jg. 31 (2021-04-01), S. 385-388
Online
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Zugriff:
This letter presents a multiband switchable low-noise amplifier (LNA) in the 0.1- $\mu \text{m}$ GaAs pHEMT process. Employing a new varactor-based tunable network as the interstage matching circuit, the operation bands can be tuned consecutively and cover the 5G millimeter-wave frequency bands N257/N260. The proposed tunable structure functions well without sacrificing noise performance or increasing dc consumption and chip area. In the entire operation band from 26.5 to 41 GHz, the LNA achieves a small-signal gain of over 24 dB and a noise figure (NF) of less than 2.9 dB. The measured result shows a small-signal gain of 25.1 dB/27.7 dB and an NF of 2.4 dB/2.8 dB at 28 GHz/39 GHz. The measured input 1-dB compression point (IP1dB) is −18.3 dBm/−17 dBm at 28 GHz/39 GHz. The measured input-referred intercept point (IIP3) is −8.8 dBm/−8.5 dBm at 28 GHz/39 GHz. The LNA has a chip size of 1.6 mm $\times 1$ mm, and the total power consumption is 74 mW. To the best of our knowledge, the proposed LNA is the state-of-the-art Ka -band switchable LNA and has similar performance compared with single-band LNAs using the same technology.
Titel: |
A Ka-Band Switchable LNA With 2.4-dB NF Employing a Varactor-Based Tunable Network
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Autor/in / Beteiligte Person: | Hong, Wei ; Chen, Jixin ; Li, Huanbo ; Li, Zekun ; Zhou, Peigen ; Hou, Debin ; Wang, Zuojun |
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Zeitschrift: | IEEE Microwave and Wireless Components Letters, Jg. 31 (2021-04-01), S. 385-388 |
Veröffentlichung: | Institute of Electrical and Electronics Engineers (IEEE), 2021 |
Medientyp: | unknown |
ISSN: | 1558-1764 (print) ; 1531-1309 (print) |
DOI: | 10.1109/lmwc.2021.3059655 |
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