Search results for: Jayanta Mukherjee

Items from 1 to 20 out of 175 results

article

A simple sinusoidal curve‐based one‐dimensional periodic leaky‐wave antenna for high‐gain continuous beam scanning

Vishakha Pandey, Ayaz Ahmad, Jayanta Mukherjee

Microwave and Optical Technology Letters > 66 > 8 > n/a - n/a

A novel technique is presented based on a sinusoidal curve‐shaped one‐dimensional periodic leaky‐wave antenna to eliminate open stopband (OSB) and enhance gain. The radiating stub is inspired by a sinusoidal curve showing zero phase constant at a single broadside frequency (9 GHz) and ripple‐free attenuation constant. The technique is first used on a unit cell with half‐cycle sinusoidal‐curved radiating...

article

Broadside scanning comb‐line leaky‐wave antenna with gain enhancement and reduced cross‐polarization

Ayaz Ahmad, Jayanta Mukherjee

Microwave and Optical Technology Letters > 65 > 10 > 2778 - 2784

In this work, a comb‐line leaky‐wave antenna with a pair of wide stubs is proposed with enhanced gain and reduced cross‐polarization. To ensure broadside scanning, three sections of transmission lines are used in the stub with the longitudinal offset. The stubs are placed half‐wavelength apart on both sides of the delay line to achieve high gain and a low‐cross polarization level. The antenna provides...

article

High power balanced TEM horn antenna for ultra wide band radiator

Sandeep K. Singh, Romesh Chandra, Sabyasachi Mitra, Ranjeet Kumar, more

Microwave and Optical Technology Letters > 65 > 6 > 1686 - 1694

A balanced transverse electromagnetic (TEM) horn type antenna is designed and developed for a 120 kV, 66 Ω high power ultra wideband (UWB) radiator. This antenna consists of a coaxial to parallel plate unzipper BALUN followed by an exponentially tapered TEM horn structure. Analysis of this antenna in time and frequency domain is performed using CST Microwave Studio. This antenna is having a power...

article

Assessment of data‐limited fisheries: A case study of three finfish species in Chilika lagoon, India

Vettath Raghavan Suresh, Eldho Varghese, Aliyamintakath M. Sajina, Subodha Kumar Karna, more

Fisheries Management and Ecology > 30 > 2 > 182 - 202

Inland capture fisheries in many parts of the world, especially in developing nations, receive relatively low governance priority, thereby raising concerns about their sustainability. Consequently, most inland capture fisheries are data‐limited, which renders conventional capture fisheries assessment methods inapplicable for making science‐based monitoring and management decisions. Three recent data‐limited...

article

Symmetric periodic leaky‐wave antenna for open stopband suppression

Ayaz Ahmad, Busineni Mahesh Kumar, Jayanta Mukherjee

Microwave and Optical Technology Letters > 63 > 12 > 3021 - 3026

In this work, a novel symmetric periodic leaky‐wave antenna is proposed for open stopband suppression. The unit cell of the proposed antenna consists of an H‐shaped ring as the leakage element. Using L–C circuit analysis, it is shown that the open stopband is effectively eliminated by optimizing the H‐shaped ring. A prototype is fabricated to verify the simulated results. The antenna radiates in the...

article

Low‐power inductorless wideband SFBB balun low noise amplifier with noise reduction and third‐order transconductance optimization

Shashank Tiwari, Jayanta Mukherjee

Microwave and Optical Technology Letters > 62 > 12 > 3864 - 3868

This article presents an inductorless wideband balun low noise amplifier (LNA), which uses noise reduction and linearity optimization techniques at low supply voltages. The proposed self forward body biased LNA uses inverter type amplifier structure as input stage for impedance matching while output stages are noise reduction stages, which partially cancel the noise of the input stage. In addition...

article

Wide band circularly polarised diversity antenna for satellite and mobile communication

Shilpa Kharche, G. Shrikanth Reddy, Rajiv Kumar Gupta, Jayanta Mukherjee

IET Microwaves, Antennas & Propagation > 2017 > 11 > 13 > 1861 - 1867

A wide band circularly polarised diversity antenna consisting of closely spaced monopole radiators is proposed. Two novel, microstrip fed-printed monopoles are designed on a common ground plane. The ground plane which is asymmetric with respect to the feed line along with the planar monopole structure is used to achieve circular polarisation. The monopoles which are symmetric with respect to the vertical...

chapter

General synthesis method for negative group delay response: A filter base approach

Ranjan Das, Qingfeng Zhang, Abhishek Kandwal, Jayanta Mukherjee

2017 47th European Microwave Conference (EuMC) > 424 - 427

2017 47th European Microwave Conference (EuMC)

A novel systematic synthesis method for negative group delay(NGD)filter is proposed in this paper. Transfer functions are obtain from synthesized characteristics polynomials. An optimum design condition is derived to reduce the number of resonators being equal to the highest degree of polynomial. Different synthesis examples are discussed with different orders and NGD responses. The exact agreement...

article

IDXL: Species Tree Inference Using Internode Distance and Excess Gene Leaf Count

Sourya Bhattacharyya, Jayanta Mukherjee

Journal of Molecular Evolution > 2017 > 85 > 1-2 > 57-78

We propose an extension of the distance matrix methods NJst and ASTRID to infer species trees from incongruent gene trees having Incomplete Lineage Sorting. Both approaches consider the average internode distance (ID) between individual taxa pairs as the distance measure. The measure ID does not use the root of a tree, and thus may not always infer the relative position of a taxon with respect to...

article

Ultra‐compact dual mode dual band filter based on separate electric and magnetic coupling paths

Anil Kamma, Jayanta Mukherjee

International Journal of RF and Microwave Computer‐Aided Engineering > 27 > 6 > n/a - n/a

A pair of dual mode independent controllable resonators used to realize dual band pass filter with good frequency selectivity and isolation is presented. The resonators are directly connected to input/output and are coupled through electric and magnetic coupling in two different paths. Magnetic coupling between the resonators is achieved using a common grounded via‐hole between the two set of quarter‐wavelength...

chapter

Compact TM₀₁ to TE₁₁ mode converter designed with matching sections

Ashutosh Patri, Ashish Chittora, Jayanta Mukherjee

2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting > 2217 - 2218

2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting

A method for designing compact TM₀₁ to TE₁₁ mode converter using dielectric slabs with matched sections is proposed in this letter. The dielectric slabs are fixed in a circular waveguide sectored by thin metallic plate partition. The designs incorporate the quarter wavelength dielectric matching section utilizing two methods i.e. inserting a different dielectric material and horizontal corrugation...

chapter

Broadband spiral diversityantenna with dielectric loading

Shilpa Kharche, Pragati Patel, Jayanta Mukherjee, Pummy Ratna, more

2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting > 1111 - 1112

2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting

In this paper, dielectric loading and scaling is used to achieve broadband circular polarization with compact size. The spirals are arranged in opposite configuration sense which is used for detection of circularly-polarized waves of either polarization sense. A wide band balun is designed to feed the antenna structure. Antenna is enclosed in elliptical shape housing. A broad impedance and AR bandwidth...

article

Spurious free independently controllable compact quad-band filter using folded T-shaped stub loaded modified ring resonator

Anil Kamma, Ranjan Das, Jayanta Mukherjee

IET Microwaves, Antennas & Propagation > 2017 > 11 > 8 > 1156 - 1161

A compact spurious free, quad-band, band-pass filter (BPF) having independently controllable and widely spaced frequency bands is proposed. The design consists of a basic BPF to which the authors introduce transmission zeros (TZs) in the frequency response using T-shaped stubs loaded with a modified ring resonator (MRR) thereby creating the four passbands. This design results in very high band-to-band...

article

A Self-Biased Mixer in $0.18\mu \text{m}$ CMOS for an Ultra-Wideband Receiver

Darshak Bhatt, Jayanta Mukherjee, Jean-Michel Redoute

IEEE Transactions on Microwave Theory and Techniques > 2017 > 65 > 4 > 1294 - 1302

A self-biased CMOS analog mixer for ultra-wideband (UWB) applications is presented in this paper. The proposed mixer is complementary and self-biased, and has lower power consumption, superior isolation, and larger bandwidth. The proposed low-power, down conversion mixer is designed and fabricated in UMC

$0.18\mu \text{m}$

CMOS technology. The measurement results show that it can operate at UWB...

article

Toward Automated Land Cover Classification in Landsat Images Using Spectral Slopes at Different Bands

Shashaank M. Aswatha, Jayanta Mukherjee, Prabir K. Biswas, Subhas Aikat

IEEE Journal of Selected Topics in Applied Earth Observations and Remote... > 2017 > 10 > 3 > 1096 - 1104

For last two decades, various techniques have been advanced for classification of satellite imageries. A vast majority of them are supervised/semisupervised requiring manual selection of samples for each class. Some of the unsupervised approaches are based on hard thresholds and particular to image acquisition modules. In this study, we propose a spectral-slope-based classification technique and subsequently...

chapter

A TM₀₁ to TE₁₁ mode converter designed with semicircular waveguide sections

Ashish Chittora, Sandeep Singh, Archana Sharma, Jayanta Mukherjee

2017 11th European Conference on Antennas and Propagation (EUCAP) > 1903 - 1906

2017 11th European Conference on Antennas and Propagation (EUCAP)

A novel TM01 to TE11 mode converter with aligned ports, wide bandwidth and high conversion efficiency is proposed. Mode conversion is performed with a circular waveguide partitioned into two semicircular sections with different path length. Lower semicircular section has a cosine profile to provide a path difference of Ag/2 for the mode conversion. Mode converter was designed and simulated at 3GHz...

article

Multi Mode Resonators Based Triple Band Notch UWB Filter

Anil Kamma, Ranjan Das, Darshak Bhatt, Jayanta Mukherjee

IEEE Microwave and Wireless Components Letters > 2017 > 27 > 2 > 120 - 122

A compact and highly selective triple band notch UWB (3.3 GHz -10.7 GHz) filter is presented. Low insertion loss UWB pass band characteristics is achieved by two coupled multi mode resonators (MMR₁ and MMR₂). Desired triple band notch characteristics and sharp UWB filter characteristics are achieved by introducing transmission zeroes (TZs). Three band notches are implemented to mitigate the potential...

article

Low-complexity feedback-channel-free distributed video coding using local rank transform

Pudi Raj Bhagath, Kallol Mallick, Jayanta Mukherjee, Sudipta Mukopadhayay

IET Image Processing > 2017 > 11 > 2 > 126 - 134

In this study, the authors propose a new feedback-channel-free distributed video coding algorithm using local rank transform (LRT). The encoder computes LRT by considering selected neighbourhood pixels of Wyner–Ziv (WZ) frame. These LRT values are merged, and their positions are entropy coded and sent to the decoder. In addition, means of each block of WZ frame are also transmitted to assist motion...

article

Prevalence of Minimal Hepatic Encephalopathy in Patients with Liver Cirrhosis: A Cross-Sectional, Clinico Epidemiological, Multicenter, Nationwide Study in India: The Predict Study

Sahaj Rathi, Madhu Chopra, Gourdas Chouduri, Praveen Sharma, more

Journal of Clinical and Experimental Hepatology > 2017 > 7 > S1 > S66-S67

article

A 1–11 GHz ultra‐wideband LNA using M‐derived inductive peaking circuit in UMC 65 nm CMOS

Darshak Bhatt, Jayanta Mukherjee, Jean‐Michel Redouté

Microwave and Optical Technology Letters > 59 > 3 > 521 - 526

A high‐gain, low‐power, and low‐noise amplifier (LNA) is designed in UMC 65 nm radio frequency (RF)‐CMOS technology for operation over the 1 to 11 GHz RF band. This LNA design is based on an m‐derived inductive peaking circuit with a shunt feedback inverter. The m‐derived inductive peaking circuit is placed between two shunt feedback inverters. Further, a split inductor topology is introduced in the...

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INFONA - science communication portal

Search results for: Jayanta Mukherjee

A simple sinusoidal curve‐based one‐dimensional periodic leaky‐wave antenna for high‐gain continuous beam scanning

Broadside scanning comb‐line leaky‐wave antenna with gain enhancement and reduced cross‐polarization

High power balanced TEM horn antenna for ultra wide band radiator

Assessment of data‐limited fisheries: A case study of three finfish species in Chilika lagoon, India

Symmetric periodic leaky‐wave antenna for open stopband suppression

Low‐power inductorless wideband SFBB balun low noise amplifier with noise reduction and third‐order transconductance optimization

Wide band circularly polarised diversity antenna for satellite and mobile communication

General synthesis method for negative group delay response: A filter base approach

IDXL: Species Tree Inference Using Internode Distance and Excess Gene Leaf Count

Ultra‐compact dual mode dual band filter based on separate electric and magnetic coupling paths

Compact TM₀₁ to TE₁₁ mode converter designed with matching sections

Broadband spiral diversityantenna with dielectric loading

Spurious free independently controllable compact quad-band filter using folded T-shaped stub loaded modified ring resonator

A Self-Biased Mixer in $0.18\mu \text{m}$ CMOS for an Ultra-Wideband Receiver

Toward Automated Land Cover Classification in Landsat Images Using Spectral Slopes at Different Bands

A TM₀₁ to TE₁₁ mode converter designed with semicircular waveguide sections

Multi Mode Resonators Based Triple Band Notch UWB Filter

Low-complexity feedback-channel-free distributed video coding using local rank transform

Prevalence of Minimal Hepatic Encephalopathy in Patients with Liver Cirrhosis: A Cross-Sectional, Clinico Epidemiological, Multicenter, Nationwide Study in India: The Predict Study

A 1–11 GHz ultra‐wideband LNA using M‐derived inductive peaking circuit in UMC 65 nm CMOS

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