Low Noise Group Delay Equalization Technique for UWB InGaP/GaAs HBT LNA

Ahn, Kyoung-Pyo; Ishikawa, Ryo; Honjo, Kazuhiko

doi:10.1109/lmwc.2010.2049441

Cited by 18 publications

(7 citation statements)

References 8 publications

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“…Based on available articles, WB LNTA was another proposed wideband structure in the 2010s that usually had power dissipation problem [252, 276, 287, 297, 335, 339], compared to the optimum UWB LNAs in Table 3. Studying [161–200, 201–250, 251–300, 301–361] shows that the LNTA idea for wideband applications was not welcomed in the 2010s by engineers; infact, most of the works focussed on WB/UWB LNAs. But note that this issue does not mean that LNTA is a useless idea.…”

Section: Discussionmentioning

confidence: 99%

“…In the 2010s, MOSFET scaling reached 5 nm from 32 nm [30] and many studies [161–200, 201–250, 251–300, 301–361] were carried out by focussing on improving the mentioned topologies and techniques which were presented in the 2000s for wideband LNA. As examples, we can refer to ‘the noise/distortion cancelation topologies’ [164, 167, 173, 181, 189, 192, 194, 195, 201, …”

Section: Uwb Lnamentioning

confidence: 99%

“…Considering the works of 2010s, [161–200, 201–250, 251–300, 301–361] it seems that optimum ultrawideband designs in the BiCMOS, the CMOS and the HEMT technologies are allocated to [305, 337, 345], respectively. In 2017, Ch.…”

Section: Uwb Lnamentioning

confidence: 99%

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Ultrawideband LNA 1960–2019: Review

Shahrabadi

2021

IET Circuits, Devices & Syst

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To the best of the author's knowledge, several studies during 1960-2019 were carried out on wideband and ultrawideband LNAs just to render optimum LNAs for SAW-less Radio-Frequency Integrated Circuits (RFICs) but none of these works reviewed and taught the proceedings of these six decades, hence the lack of a comprehensive review is quite noticeable. This article specifically studies the challenges and solutions of designing UWB LNA by reviewing topologies and techniques such as inductive peaking, noise and distortion cancellation, g m -boosting, active inductor and notch filter. Its historical aspect illustrates when the idea of wideband LNA was born and how it changed to ultrawideband LNA, and its tutorial aspect discusses circuits and achievements to present optimum LNAs in Complementary MOS (CMOS), BiCMOS and High-Electron-Mobility Transistor (HEMT) technologies. This work describes the endeavours of engineers in reaching UWB LNA from narrowband LNA during six decades that have great importance as a chapter in understanding this topic because it teaches all topologies, techniques, circuits and related events in a historical narrative for trained readers who are not experts on this topic. | UWB LNA | In the 1960sWhere did the idea of 'transistorised wideband LNA' originate from? It seems that everything goes back to the 1960s when This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Section: Discussionmentioning

confidence: 99%

Section: Uwb Lnamentioning

confidence: 99%

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Ultrawideband LNA 1960–2019: Review

Shahrabadi

2021

IET Circuits, Devices & Syst

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“…Furthermore, NGDC has attracted much attention because of its abnormal electromagnetic wave propagation characters and wide application prospects. Nowadays, the NGDCs have been applied to group delay equalization of ultra-wideband amplifiers [3,4], linear-phase filters [5,6], efficiency enhancement of feed-forward amplifiers [7], and elimination of phase variation with frequency in phase shifter [8].…”

Section: Introductionmentioning

confidence: 99%

A Tri-Band Negative Group Delay Circuit for Multiband Wireless Applications

Meng¹,

Wang²,

Fang³

et al. 2021

PIER C

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A tri-band negative group delay (NGD) microwave circuit for multiband wireless applications is proposed and self-matched without the need for external matching networks. The frequency range can be influenced by the characteristic impedance of the microstrip lines. Under the condition that the microstrip circuit can be implemented with the common printed circuit board (PCB) fabrication technology, the frequency ratio of the highest NGD band to the lowest NGD band can vary between 3.8 and 10.9. For verification, a 1.2/3.5/5.8-GHz tri-band NGD circuit for Beidou B2, WiMax, and WLAN applications is designed, fabricated, and measured. From the measured results, the NGD times are −1.08 ns, −1.19 ns, and −1.09 ns at three NGD central frequencies with insertion losses of 16.4 dB, 24.6 dB, and 18.9 dB, respectively. And the measured NGD bandwidths are 12.40% for the lower band, 8.60% for the center band, and 3.59% for the upper band, in which the return losses are greater than 16 dB.

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“…However, the low frequency‐sensitivity delay time of these dispersive structures could limit the potential applications in various aspects. Some [12, 13] employed dispersive delay lines to obtain microwave circuits in compact sizes, whereas others [14–18] studied noise and applications of dispersive delay lines. In the optics study, a coherent optical non‐linearity causes electromagnetically induced transparency and it renders a medium transparent over a narrow spectral range [19, 20].…”

Section: Introductionmentioning

confidence: 99%