A Low Power Concurrent Dual-Band Low Noise Amplifier For WLAN Applications

Khosravi, Hossein; Bijari, Abolfazl; Kandalaft, Nabeeh; Cabral, Jorge

doi:10.1109/iemcon.2019.8936211

Cited by 6 publications

(5 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Equations ( 7) and ( 8) can be rewritten by replacing the inductors along with their internal resistances, as given by ( 9) and (10).…”

Section: Detailed Theoretical Analysis a Effect Of Internal Resistanc...mentioning

confidence: 99%

“…Expression of Z in given in (10), implies the addition of feedback tends to increase the value of Z in . From (9) it is clear that the same increase in the value of Z in can be obtained by properly tuning the inductors L G and L S (source degeneration (SD)) such that they offer a high internal resistance, which is the ultimate goal for which feedback is employed.…”

Section: Detailed Theoretical Analysis a Effect Of Internal Resistanc...mentioning

confidence: 99%

“…Apart from providing an excellent NF, the LNA must also be highly rugged. Therefore, the choice of process technology used in the design of an LNA is also vitally important [8]- [10].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimizing Low Noise Amplifiers: A Two-Stage Approach for Improved Noise Figure and Stability

Zaid,

Kumari,

Pampori

et al. 2024

IEEE Access

View full text Add to dashboard Cite

This study introduces a new design for a low noise amplifier (LNA) consisting of two stages taking advantage of the inherent lossy properties of the input matching components. By doing this, the design achieves a balance between the minimum noise figure (NF) and stability, eliminating the complexities and challenges introduced by feedback networks. Furthermore, the integration of the low-pass filter (LPF) into the design as a noise-matching network ensures improved performance across both the amplifier stages. A comprehensive analytical study is also introduced to delve deep into the relationship between critical LNA parameters, such as stability and noise figures, and the internal resistance of input-matching inductors. Two C-band LNAs are compared in terms of stability using indigenous 0.25µm GaN technology. The designs are substantiated by fabricating two LNA MMICs for a 5-7 GHz frequency range, having a minimum NF of 1.3 dB and 1.5 dB, with a gain of 15 dB and 16 dB at 6 GHz, respectively. The study reveals that using the proposed approach, there is an overall improvement in NF of 0.2 dB within the frequency of operation. The work entails a way to remove the feedback network in the LNA leading to an improved NF.INDEX TERMS C-Band, GaN, low-noise amplifier (LNA), low pass filter (LPF), noise figure (NF)

show abstract

“…Equations ( 7) and ( 8) can be rewritten by replacing the inductors along with their internal resistances, as given by ( 9) and (10).…”

Section: Detailed Theoretical Analysis a Effect Of Internal Resistanc...mentioning

confidence: 99%

Section: Detailed Theoretical Analysis a Effect Of Internal Resistanc...mentioning

confidence: 99%

See 1 more Smart Citation

Optimizing Low Noise Amplifiers: A Two-Stage Approach for Improved Noise Figure and Stability

Zaid,

Kumari,

Pampori

et al. 2024

IEEE Access

View full text Add to dashboard Cite

show abstract

“…A. LNA circuit Designing a wideband LNA is one of the major challenges in the design of an UWB communication system [16]. As the first active element in the receive chain, the LNA must achieve sufficient gain while incurring a small additional noise to minimize the overall receiver noise figure (NF).…”

Section: Lna Circuit Designmentioning

confidence: 99%

“…As the first active element in the receive chain, the LNA must achieve sufficient gain while incurring a small additional noise to minimize the overall receiver noise figure (NF). Furthermore, the LNA must provide good linearity while consuming low power [16,17]. The differential LNA offers several advantages, such as the rejection of the noise travelling in the substrate, the supply noise and attenuates the common mode signal.…”

Section: Lna Circuit Designmentioning

confidence: 99%

Passive Mixer-based UWB Receiver with Low Loss, High Linearity and Noise-cancelling for Medical Applications

Kareem,

Trabelsi

2022

International Journal of Electronics and Telecommunications

View full text Add to dashboard Cite

A double balanced passive mixer-based receiver operating in the 3-5 GHz UWB for medical applications is described in this paper. The receiver front-end circuit is composed of an inductorless low noise amplifier (LNA) followed by a fully differential voltage-driven double-balanced passive mixer. A duty cycle of 25% was chosen to eliminate overlap between LO signals, thereby improving receiver linearity. The LNA realizes a gain of 25.3 dB and a noise figure of 2.9 dB. The proposed receiver achieves an IIP3 of 3.14 dBm, an IIP2 of 17.5 dBm and an input return loss (S11) below -12.5dB. Designed in 0.18μm CMOS technology, the proposed mixer consumes 0.72pW from a 1.8V power supply. The designed receiver demonstrated a good ports isolation performance with LO_IF isolation of 60dB and RF_IF isolation of 78dB.

show abstract