A Tri (K/Ka/V)-Band Monolithic CMOS Low Noise Amplifier with Shared Signal Path and Variable Gains

Liang, Chia-Jen; Chiang, Ching-Wen; Zhou, Jia; Huang, Ruijie; Wen, Kuei-Ann; Chang, M.F.; Kuan, Yen-Cheng

doi:10.1109/ims30576.2020.9223850

Cited by 15 publications

(5 citation statements)

References 9 publications

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“…Various multiband LNAs have been described [6], [11], [12], [13], [14], [15], including switched and concurrent multiband LNAs. On the multiband LNA circuit, the input-matching network always uses a fixed singleor wide-band design because switching the input-matching network may cause additional switching losses, increasing noise [13].…”

Section: Introductionmentioning

confidence: 99%

“…They were used to implement variable gain LNA [21] and a frequency-reconfigurable power amplifier [22]. Liang et al [14] used a coupling transformer wide-band design on an input-matching network; transistors were used to switch the interstage-and output-matching networks to achieve a switched multiband. However, a wide-band coupling transformer design cannot be optimized for the main frequency band due to resulting increases in average noise.…”

Section: Introductionmentioning

confidence: 99%

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Ka-/K-Band Frequency-Reconfigurable Single-Input Differential-Output Low-Noise Amplifier for 5G Applications

Chen

Tsai

2023

IEEE Microw. Wireless Tech. Lett.

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This letter describes the design, analysis, and performance measurements of a K a-and K -band frequencyreconfigurable single-input differential-output (SIDO) low-noise amplifier (LNA) with a compact core size of 0.157 mm 2 . At 28 and 39 GHz, respectively, the noise figures of the LNA were 2.8 and 4.4 dB; it had high differential gains of 20.1 and 14.9 dB. The proposed LNA was fabricated using the 65-nm CMOS process. The LNA includes a two-stage common-source (CS) buffer amplifier to achieve low noise and an active balun for converting single-ended signals into differential signals. Moreover, a substrate-shield-based inductor and tunable matching networks were used to achieve the frequency reconfiguration function of the LNA. The gain and phase imbalances were 0.3 and 0.2 dB, and 5.4 • and 6 • at 28 and 39 GHz, respectively. Compared with published multiband SIDO LNAs, the proposed amplifier achieved higher figures of merit (FoMs) of 3.52 and 1.77 while maintaining a compact core size. Therefore, the LNA is suitable for K -and K a-band 5G communication applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Ka-/K-Band Frequency-Reconfigurable Single-Input Differential-Output Low-Noise Amplifier for 5G Applications

Chen

Tsai

2023

IEEE Microw. Wireless Tech. Lett.

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“…The main issue with wideband LNAs is that they amplify the unwanted signal with the desired signal, degrading the receiver's sensitivity. Reconfigurable LNAs are another approach to develop wideband receivers with good interference rejection, and many multiband LNAs are reported in [7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22]. A reconfigurable multimode LNA realized by incorporating a switched multitap transformer into the input matching network and tunable load based on electrical and magnetic tuning operating at 3 single bands (24/28/39 GHz) is proposed in [8], but they have less gain around 12 dB and high NF up to 5 dB.…”

Section: Introductionmentioning

confidence: 99%

“…The demerit is that the LC tank impedance matching is not suitable for wideband impedance matching. A tri-band reconfigurable LNA operating at 24/33/50 GHz based on triple coupling transformer (TCT) with additional gain boosting to achieve gain up to 32 dB with 6 dB minimum noise figure is reported in [15]. This TCT technique introduces high NF and poor linearity and also not suitable for wideband design.…”

Section: Introductionmentioning

confidence: 99%

“…This TCT technique introduces high NF and poor linearity and also not suitable for wideband design. In these reported works [12][13][14][15], and [26] all operating at mm-wave bands have only a narrow band of operation and had their design tradeoffs, and their design techniques are not suitable for the wideband application, which is our goal here.…”

Section: Introductionmentioning

confidence: 99%

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A K/Ka-Band Switchless Reconfigurable 65 nm CMOS LNA Based on Suspended Substrate Coupled Line

et al. 2022

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This article presents a K/Ka (18-40) GHz dual-band switch-free reconfigurable 65nm CMOS Low-Noise Amplifier (LNA) realized by inter-stage and output-stage Suspended-Substrate Coupled-Lines (SSCL) for the first time to the author's best knowledge. The amplified input signal from the broadband drive stage is divided into two parallel single band stages by the proposed inter-stage SSCL. Two split-band signals are amplified by the corresponding High-band (Ka) and Low-band (K) stages. The proposed outputstage SSCL combines the amplified two single-bands at the output. The proposed SSCL also provides the required network matching to the LNA. The single band of operation can be achieved by simply turning off the unused transistor band's drain voltage. The proposed LNA achieves a maximum noise figure (NF) taken in dual-mode of 1 dB and 1.2 dB and a gain of 27 dB with 0.2 dB and 2 dB variation in the K-band and Kaband, respectively. Statistical analysis and design of experiment (DoE) are applied to predict the percentage error tolerance and validate the contribution of the parameters towards gain, return loss, and noise figure. This LNA exhibits an input and output 1-dB compression point (IP1dB & OP1dB), third-order input & output intercept point (IIP3 & OIP3) of -17/-16 dBm, +7.1/6.4 dBm, 0 dBm and +25/+23 dBm over 18-24/25-40 GHz respectively. The fabricated LNA draws 21.4 mA from 1.2 V with a size of 0.61×0.92 mm 2 .

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Design and Analysis of 9-mW 25.5–30.7-GHz CMOS Variable-Gain Amplifier Using Body-Floating Gain-and-Noise-Enhancement Technique

Lin,

Chen

2024

Circuits Syst Signal Process

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A Tri (K/Ka/V)-Band Monolithic CMOS Low Noise Amplifier with Shared Signal Path and Variable Gains

Cited by 15 publications

References 9 publications

Ka-/K-Band Frequency-Reconfigurable Single-Input Differential-Output Low-Noise Amplifier for 5G Applications

Ka-/K-Band Frequency-Reconfigurable Single-Input Differential-Output Low-Noise Amplifier for 5G Applications

A K/Ka-Band Switchless Reconfigurable 65 nm CMOS LNA Based on Suspended Substrate Coupled Line

Design and Analysis of 9-mW 25.5–30.7-GHz CMOS Variable-Gain Amplifier Using Body-Floating Gain-and-Noise-Enhancement Technique

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