Search Results - "Agaram, Raghunathan"

PRATUSH experiment concept and design overview by Sathyanarayana Rao, Mayuri, Singh, Saurabh, K.S., Srivani, B.S., Girish, Sathish, Keerthipriya, R., Somashekar, Agaram, Raghunathan, K., Kavitha, Vishwapriya, Gautam, Anand, Ashish, N., Udaya Shankar, S., Seetha

“…PRATUSH – Probing ReionizATion of the Universe using Signal from Hydrogen – is a proposed cosmology experiment to detect the global red-shifted 21-cm signal…”
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Compact Water-Based Coaxial Delay Line by Sathish, Keerthipriya, Agaram, Raghunathan, N, Nagaraja H., Deshpande, Avinash, Sethi, Shiv

“…The coaxial cables are commonly used as delay lines in phased arrays for steering the antenna beam in the sky. At low radio frequencies, larger array size and…”
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Compact Rotman Lens on Water Based Substrate for Low-Frequency Applications by Agaram, Raghunathan, Sathish, Keerthipriya, N, Nagaraj H., Sethi, Shiv, Deshpande, Avinash A.

“…The Rotman lens is an inexpensive, less complex, compact, wideband and easy to fabricate analog beam former used extensively for producing multiple beams in…”
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Compact Water-based Microstrip Filters by Sathish, Keerthipriya, Sathyamurthy, Arasi, Agaram, Raghunathan, Nagaraja, H.N, Deshpande, Avinash, Sethi, Shiv

“…Implementation of Microstrip circuits at low radio frequencies presents challenges due to the longer wavelengths, resulting in increased form factor. This can…”
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Design of a Multilayer Microstrip Delay Line on a Water Based Composite Dielectric Medium by Agaram, Raghunathan, Sathish, Keerthipriya, N, Nagaraj H., Deshpande, Avinash A., Sethi, Shiv

“…The physical dimension of a microstrip delay line is known to depend upon the effective dielectric constant of the substrate. A higher dielectric constant is…”
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A Wideband Single Polarization Radio Receiver - Precursor to Low Frequency Radio Telescope by Agaram, Raghunathan, Sethi, Shiv, Deshpande, Avinash A., K.B, Raghavendra, Satish, Keerthipriya, Sandhya, S, Arasi, Vinod.K.R, H.N, Nagaraj, K.S, Srivani, B.S, Girish, Prabu.T, K, Kavitha, Pandharpure, Vishakha S., C, Vinutha, P.A, Kamini, S, Madhavi, Somashekar.R

“…The low frequency radio telescope (LFRT) is a new initiative undertaken by the Raman Research Institute (RRI) for exploring the radio sky at low frequencies…”
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An Octave Bandwidth Frequency Independent Dipole Antenna by Raghunathan, Agaram, Shankar, N. Udaya, Subrahmanyan, Ravi

“…Precision measurements of the spectrum of the cosmic radio background require frequency independent antennas of small electrical dimensions. We describe the…”
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Antennas for low-frequency radio telescope of SKA by Raghunathan, Agaram, Satish, Keerthipriya, Sathyamurthy, Arasi, Prabu, T., Girish, B. S., Srivani, K. S., Sethi, Shiv K.

“…The low-frequency radio telescope of the Square Kilometre Array (SKA) is being built by the international radio astronomical community to (i) have orders of…”
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A Floating Octave Bandwidth Cone-Disk Antenna for Detection of Cosmic Dawn by Raghunathan, Agaram, Subrahmanyan, Ravi, Shankar, N. Udaya, Singh, Saurabh, Nambissan, Jishnu, Kavitha, K., Mahesh, Nivedita, Somashekar, R., Sindhu, Gaddam, Girish, B. S., Srivani, K. S., Rao, Mayuri S.

“…The critical component of radio astronomy radiometers built to detect redshifted 21 cm signals from Cosmic Dawn is the antenna element. We describe the design…”
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A Wideband Resistive Beam-Splitter Screen by Mahesh, Nivedita, Subrahmanyan, Ravi, Shankar, N. Udaya, Raghunathan, Agaram

“…We present the design, construction, and measurements of the electromagnetic performance of a wideband space beam splitter. The beam splitter is a sheet in…”
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Progression of digital-receiver architecture: From MWA to SKA1-Low, and beyond by Girish, B. S., Reddy, S. Harshavardhan, Sethi, Shiv, Srivani, K. S., Abhishek, R., Ajithkumar, B., Bhattramakki, Sahana, Buch, Kaushal, Chaudhuri, Sandeep, Gupta, Yashwant, Kamini, P. A., Kudale, Sanjay, Madhavi, S., Muley, Mekhala, Prabu, T., Raghunathan, Agaram, Shelton, G. J.

“…Backed by advances in digital electronics, signal processing, computation and storage technologies, aperture arrays, which had strongly influenced the design…”
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Wide Band Antenna with Ultra-smooth Spectral Characteristics by Raghunathan, Agaram, Girish, B., Somashekar, R., Srivani, K., Singh, Saurabh, Subrahmanyan, Ravi, Shankar, N., Rao, Mayuri Rao, Nambissan T., Jishnu

“…Understanding the evolution of Universe is, in the forefront of, the modern day observational cosmology. It requires precise and accurate measurement of…”
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Antennas for low-frequency radio telescope of SKA by Raghunathan, Agaram, Satish, Keerthipriya, Sathyamurthy, Arasi, Prabu, T, Girish, B. S, Srivani, K. S, Sethi, Shiv K

“…The low-frequency radio telescope of the Square Kilometre Array (SKA) is being built by the international radio astronomical community to (i) have orders of…”
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Wideband antenna for detecting global signal from the recombination epoch by Kavitha, K., Raghunathan, Agaram, Somashekar, R., Girish, B.S., Srivani, K.S., Subrahmanyan, Ravi, Shankar, N.Udaya, Rao, Mayuri Sathyanarayana, Singh, Saurabh, Nambissan, Jishnu

“…Precise measurement of cm wavelength radio back-ground and detection of fine structure spectral distortions in it require an antenna with i) monotonically…”
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A Floating Octave Bandwidth Cone-Disc Antenna for Detection of Cosmic Dawn by Raghunathan, Agaram, Subrahmanyan, Ravi, Shankar, N. Udaya, Singh, Saurabh, Nambissan, Jishnu, Kavitha, K, Mahesh, Nivedita, Somashekar, R, Sindhu, Gaddam, Girish, B. S, Srivani, K. S, Rao, Mayuri S

“…The critical component of radio astronomy radiometers built to detect redshifted 21-cm signals from Cosmic Dawn is the antenna element. We describe the design…”
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Wide band antenna with Ultra-smooth spectral characteristics by Raghunathan, Agaram, Girish, B.S., Somashekar, R., Srivani, K.S., Singh, Saurabh, Subrahmanyan, Ravi, Shankar, N. Udaya, Rao, Mayuri Sathyanarayana, Nambissan T., Jishnu

“…Understanding the evolution of Universe is, in the forefront of, the modern day observational cosmology. It requires precise and accurate measurement of…”
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Wideband antennas for precision spectral radiometers for cosmology by Subrahmanyan, Ravi, Raghunathan, Agaram, Shankar, N. Udaya, Singh, Saurabh, Puthige, Sharath, Mahesh, Nivedita, Rao, Mayuri Sathyanarayana

“…Precision cosmology has been made possible by differential microwave radiometers that have imaged the anisotropy in the cosmic microwave background radiation…”
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A Resistive Wideband Space Beam Splitter by Mahesh, Nivedita, Subrahmanyan, Ravi, Shankar, N. Udaya, Raghunathan, Agaram

“…We present the design, construction and measurements of the electromagnetic performance of a wideband space beam splitter. The beam splitter is designed to…”
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Design of frequency independent profiled discone antenna for detecting spectral ripples from the epoch of recombination by Raghunathan, Agaram, Shankar, N. Udaya, Rao, Mayuri Sathyanarayana, Subrahmanyan, Ravi

“…Detection of distortions in the spectrum of cosmic microwave background radiation (CMBR) is the current challenging problem in the modern observational…”
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An octave bandwidth frequency independent dipole antenna by Raghunathan, Agaram, Shankar, N. Udaya, Subrahmanyan, Ravi

“…Precision measurements of the spectrum of the cosmic radio background require frequency independent antennas of small electrical dimensions. We describe the…”
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