A Cellular-Band CDMA 0.25-&lt;tex&gt;$mu$&lt;/tex&gt;m CMOS LNA Linearized Using Active Post-Distortion

Kim, Nam-Soo; Aparin, V.; Barnett, K.; Persico, C.

doi:10.1109/jssc.2006.873909

Cited by 74 publications

(28 citation statements)

References 2 publications

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“…From (19) and (20), as long as ð According to (5), the noise factor of the CG is mainly caused by Cx. In the proposed design, Lg and Ls can eliminate the parasitic capacitance at node X and therefore the noise factor coming from the CG stage can be ignored.…”

Section: (B) Cg Stage and CX Eliminationmentioning

confidence: 99%

“…However, the common problem with the DS method is its sensitivity to PVT variations because the added transistor must work in the weak inversion region. The post-distortion method in [5] also utilizes an auxiliary transistor's nonlinearity to cancel that of the main device, but the transistors all operate in the saturation mode. Therefore, it is more robust to the PVT variation and avoids the input matching influence coming from the auxiliary transistor.…”

Section: Introductionmentioning

confidence: 99%

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Wide range linearity improvement technique for linear wideband LNA

Zhang¹,

Dinh

Chen

et al. 2017

IEICE Electron. Express

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This paper proposes a wideband linearity improvement technique for the CS-CG cascode structure in the Low-Noise Amplifier (LNA), in which the linearity of both CS and CG stages are improved simultaneously. At relatively low frequencies, the noise and nonlinearity contributions mainly come from the CS stage and a post-distortion method is adopted to eliminate the third-order harmonic. As the frequency increases, the nonlinearity and noise contribution of the CG stage becomes more severe due to its parasitic capacitances. A transformer feedback structure is proposed to increase the gain and reduce the noise, thereby improving the linearity of the CG stage. The linearization technique is applied to an ultra-wideband (UWB) cascode LNA to evaluate effectiveness. The designed LNA achieves a S11 of less than −10 dB in a wide frequency range of 2.1-7.6 GHz and a gain of more than 10 dB with a peak of 11.7 dB. Over this range, a minimum NF of 3.4 dB and a relatively high IIP3 of greater than 10 dBm with a 15.7 dBm peak are achieved. The results indicate that the proposed technique effectively improves the linearity of the cascode LNA in a wide range of frequencies. At the same time, NF and gain performance are also improved.

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Section: (B) Cg Stage and CX Eliminationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Wide range linearity improvement technique for linear wideband LNA

Zhang¹,

Dinh

Chen

et al. 2017

IEICE Electron. Express

View full text Add to dashboard Cite

show abstract

“…The spacing between these tones differs according to the communication standard, varying from 1 MHz in GSM [10], 2 MHz in WCDMA [11], to 200 MHz in UWB [12][13][14]. A linear LNA can alleviate the performance requirement of the other blocks and thus lead to low power consumption and less silicon area of the overall receiver [15].…”

Section: Lna Parametersmentioning

confidence: 99%

Low-noise amplifiers in wireless communications: state of the art, two new wideband all-active LNAs in SiGe-BiCMOS

Godara

Fabre

2009

Analog Integr Circ Sig Process

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The aim of this paper is three-fold. First, it introduces the low-noise amplifier, its relevance in modern wireless communications receivers and the performance expected of it. Then, it presents an exhaustive review of the existing topologies, presenting their advantages and shortcomings. And finally, it introduces a new class of LNAs, based on current conveyors, describing the founding principle and the performances of two new LNAs, one single-ended and the other differential. Both these new LNAs offer the following notable advantages over existent topologies: total absence of passive elements (and the smallest LNAs in their respective classes); wideband performance, with stable frequency responses from 0 to 3 GHz; easy gain control over wide ranges (0-20 dB). Comparisons with other topologies prove that the new class of LNA implementations greatly advances the state of the art. These amplifiers are ideally suited to today's multiband receivers.

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“…The DS method might lead to high noise figure due to transistors operating in the weak inversion region. The Post Distortion Cancellation (PDC) is a useful technique for highly linear amplifier design [6,7]. In this technique, all transistors operate in the saturation region, avoiding high sensitivity problem and noise figure degradation.…”

Section: Introductionmentioning

confidence: 99%

Highly linear Post Distortion Cancellation common-gate Gilbert-mixer in Ku-band

Elyasi

Nabavi

2011

IEICE Electron. Express

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This paper presents a new Post Distortion Cancellation (PDC) Gilbert-mixer for Ku-band applications to minimize the thirdorder nonlinear current of transconductance transistors. To illustrate the effectiveness of this scheme, distortion analysis using Volterra series is given. An extra inductor is added between source nodes of switching transistors to decrease the deteriorating effect of parasitic capacitances. The proposed mixer has been simulated in a 0.18-µm RF-CMOS technology and consumes only 6-mW from a 1.8-V supply. Compared to conventional Gilbert-mixer, it typically improves IIP3 by 4.2 dB, power conversion gain by 1.1 dB and noise figure by 1.4 dB. Keywords: Post Distortion Cancellation technique, Ku-band, CMOS, common-gate Gilbert-mixer Classification: Integrated circuits References[1] B. Gilbert, "A precise four quadrant multiplier with subnanosecond response," IEEE J. Solid-State Circuits, vol. 3, no. 4, pp. 365-373, Dec. 1968 Lett., vol. 16, no. 4, pp. 182-184, April 2006. [7] N. Kim, V. Aparin, K. Barnett, and C. Persico, "A cellular-band CDMA 0.25 µm CMOS LNA linearized using active post-distortion," IEEE J.

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A Cellular-Band CDMA 0.25-<tex>$mu$</tex>m CMOS LNA Linearized Using Active Post-Distortion

Cited by 74 publications

References 2 publications

Wide range linearity improvement technique for linear wideband LNA

Wide range linearity improvement technique for linear wideband LNA

Low-noise amplifiers in wireless communications: state of the art, two new wideband all-active LNAs in SiGe-BiCMOS

Highly linear Post Distortion Cancellation common-gate Gilbert-mixer in Ku-band

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