نتایج جستجو برای: lna
تعداد نتایج: 1766 فیلتر نتایج به سال:
Ultra wide band systems are considered as one of the most exciting technologies due to its capability of transmitting data over a wide frequency spectrum with very low power and high data rates. In any UWB receiver the low noise amplifier is the first stage. The LNA plays a crucial role in the whole reception chain. In this paper, we examine the performance of two different modulations techniqu...
In this paper, the significance of linearity for UWB front-end circuit is discussed. The effects of strong narrow band interferer on UWB signal are investigated. Wideband linearization techniques for UWB LNA are first proposed in this work. A high linearity UWB LNA is designed in TSMC 0.18μ CMOS process The simulation results show that the designed LNA exhibits very high IIP3 (6.9~13.8 dBm) whi...
This paper presents a 23–32 GHz wideband BiCMOS low-noise amplifier (LNA). The LNA utilizes coupled-resonators to provide a wideband load. To our knowledge, the proposed LNA achieves the widest bandwidth with minimum power consumption using 0.18 m BiCMOS technology in K-band. Analytical expressions for the wideband input matching, gain, noise figure and linearity are presented. The LNA is imple...
2. LNA: An Insight 4675 2.1. Family 4675 2.2. Synthesis 4676 2.3. Attributes 4677 2.3.1. Hybridization 4677 2.3.2. Thermodynamics 4677 2.3.3. Conformation 4680 2.3.4. Triplex-Forming Oligonucleotide (TFO) 4680 2.3.5. RNase H Activation 4681 2.3.6. Nuclease Resistance and Serum Stability 4682 2.3.7. Delivery into Cell 4683 2.3.8. In Vivo Toxicity 4683 3. LNA as a Tool: Implications 4684 3.1. LNA...
This paper presents a multi-band low-noise amplifier (LNA) in the 45-nm CMOS silicon-on-insulator (SOI) process. The LNA consists of three stages, with differential cascode as core structure. first stage is mainly responsible for input matching to ensure favourable noise characteristics and bandwidth, while subsequent stages increase gain. Moreover, utilizes baluns input/output interstage imped...
Rates of conversion of alpha-linolenic acid (alpha-LNA, 18:3n-3) to docosahexaenoic acid (DHA, 22:6n-3) by the mammalian brain and the brain's ability to upregulate these rates during dietary deprivation of n-3 polyunsaturated fatty acids (PUFAs) are unknown. To answer these questions, we measured conversion coefficients and rates in post-weaning rats fed an n-3 PUFA deficient (0.2% alpha-LNA o...
High affinity antisense oligonucleotides (ASOs) containing bicylic modifications (BNA) such as locked nucleic acid (LNA) designed to induce target RNA cleavage have been shown to have enhanced potency along with a higher propensity to cause hepatotoxicity. In order to understand the mechanism of this hepatotoxicity, transcriptional profiles were collected from the livers of mice treated with a ...
The effect of locked nucleic acid (LNA) modification position upon representative DNA polymerase and exonuclease activities has been examined for potential use in primer extension genotyping applications. For the 3'-->5' exonuclease activities of four proofreading DNA polymerases (Vent, Pfu, Klenow fragment and T7 DNA polymerase) as well as exonuclease III, an LNA at the terminal (L-1) position...
BACKGROUND Modified nucleotides are increasingly being utilized in the de novo selection of aptamers for enhancing their drug-like character and abolishing the need for time consuming trial-and-error based post-selection modifications. Locked nucleic acid (LNA) is one of the most prominent and successful nucleic acid analogues because of its remarkable properties, and widely explored as buildin...
Narrow band Low Noise Amplifiers (LNA) use inductors for band selection and input matching to reduce power consumption and reduce thermal noise generation. The LNA amplifies all signals within its fixed band, including blocking signals. This requires a larger dynamic range from the rest of the front end (mixers and analog to digital converters (ADC)). This paper presents a solid state active in...
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