A 280μW sub-threshold Balun LNA for medical radio using current re-use technique

Reddy, K. Vasudeva; Sravani, K. Girija; H, Prashantha Kumar

doi:10.1109/prime-la.2017.7899171

Cited by 3 publications

(5 citation statements)

References 10 publications

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“…4a shows that the higher value of C ac (15 pF) has an improvement in NF by 1.3 dB when compared with NF (i.e. 4.4 dB) reported in [13]. The W/L ratio of transistors and values of the other components are calculated to meet the target specifications and assumptions.…”

Section: Effect Of C Ac On Nfmentioning

confidence: 99%

“…The design flow of sub-threshold IDCS technique reported in [13] has the following shortcomings: (i) improper selection of initial parameters, (ii) the bias voltage and Q in decides the width of transistor M 1 but not the gain, (iii) the condition C ex > 4C gs can be avoided. An improved design flow has been proposed to overcome these shortcomings as shown in Fig.…”

Section: Balun Lna Schematic and Designmentioning

confidence: 99%

“…A cascaded common source stage (stage II) is stacked on top of the IDCS stage (stage I) to convert incoming single-ended antenna signal into differential. The balun LNA reported in [13] gives the immense performance if the impedance seen from node S to down is very high. However, practically this is very difficult since the quality factor of on-chip inductor (L d1 ) is not more than 15.…”

Section: Balun Lna Schematic and Designmentioning

confidence: 99%

“…The MedRadio balun LNA reported in [13] has the following issues: (i) poor noise performance, (ii) gain and phase imbalance and (iii) high sensitivity to routing resistance. So, the stumbling balun and low-power stipulation of MedRadio motivated us to develop an alternative technique for SD LNA.…”

Section: Introductionmentioning

confidence: 99%

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PVT compensated high selectivity low‐power balun LNA for MedRadio communication

KuppiReddy¹,

Herolli²,

Baghini³

2018

IET Microwaves, Antennas & Propagation

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A single‐to‐differential low‐noise amplifier (LNA) is proposed for low‐power medical devices in the frequency band of 401–406 MHz. The proposed LNA avoids the use of surface acoustic wave (SAW) filter and additional balun in RF receiver front‐end. The LNA comprises inductive degeneration common source (IDCS) technique (stage I) and a cascaded common source circuit (stage II). The stage‐II is stacked on top of stage‐I. The proposed balun LNA incorporates single to differential (SD) conversion for minimum gain and phase error. A compensation bias circuit is proposed to minimise variations in parameters of LNA against process corners, supply voltage and temperature (PVT). An upsurge balun LNA is designed in UMC 0.18‐µm CMOS technology, the DC power consumption is 290 µW under a supply voltage of 1 V and the minimum noise figure is 3 dB. The die area of LNA including buffers and bias circuit is 850 µm × 978 µm. The worst‐case post layout simulation results show a gain and phase error of 0.8 dB and 10°. The percentage variation of gain and NF against PVT is reduced by 55 and 48%. Furthermore, the balun LNA has out of band rejection at the roll‐off rate better than 70 dB/dec.

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Section: Effect Of C Ac On Nfmentioning

confidence: 99%

Section: Balun Lna Schematic and Designmentioning

confidence: 99%

Section: Balun Lna Schematic and Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

PVT compensated high selectivity low‐power balun LNA for MedRadio communication

KuppiReddy¹,

Herolli²,

Baghini³

2018

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

show abstract

“…Various concepts have been tailored in the designing of an LNA which gives almost the best performance, for instance multistage cascode LNA, inductive degeneration common source (IDCS), balun LNA and many more. A wideband balun LNA and MedRadio balun LNA were proposed by ZareFatina and ZareFatin [12], and Reddy et al [13] have shown the limitations of poor noise performance and poor gain and phase imbalance. These issues have been taken care of by the proposed scheme.…”

Section: Introductionmentioning

confidence: 99%