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Nagendra Kumar - IEEE Xplore Author Profile
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Nagendra Kumar

Publications
14
Citations
79
Publications by Year
20152024
Co-Authors:
Show All Co-Authors (23)
Image of author Nagendra Kumar

Nagendra Kumar

Affiliation

U.R. Rao Satellite Centre Bangalore
ISRO
Bengaluru, India

Publication Topics

Biography

Nagendra Kumar received the B.Tech degree in electronics and communication engineering from the West Bengal University of Technology, Kolkata, India, in 2010 and the Ph.D. degree in RF and microwaves from the Indian Institute of Technology (IIT) Patna, Patna, India, in 2017.,He worked on tunable and reconfigurable filter. He is currently working as a Scientist with Indian Space Research Organization, Bengaluru, India. His current research interests lies in the design of tunable and reconfigurable filters, switchable filters, and multiband filters.(Based on document published on 6 October 2021).
Publications
14
Citations
79
Publications by Year
20152024
Co-Authors:
Show All Co-Authors (23)
Author's Published Works

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Design of Third-Order BPFs with Featured Transmission Zeros for Enhanced Selectivity

Shriman Narayana;V. Sivavenkateswara Rao;Shadab Rabbani;Nagendra Kumar;Sandip Kumar;Yatendra Kumar Singh

2024 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON)
Year: 2024 | Conference Paper |
This work proposes two third-order bandpass filters (BPFs): one with low-side transmission zero and the other with high-side transmission zero, to improve the selectivity of the passband. To generate the transmission zero, the structure relies primarily on the electrical coupling of two folded open-loop resonators that are internally coupled with a half-wavelength resonator. A half-wavelength reso...Show More

Design of Third-Order BPFs with Featured Transmission Zeros for Enhanced Selectivity

Shriman Narayana;V. Sivavenkateswara Rao;Shadab Rabbani;Nagendra Kumar;Sandip Kumar;Yatendra Kumar Singh

Year: 2024 | Conference Paper |

A Miniaturized Tunable Dual-band BPF With CABW Using Stub-Loaded Multi-Mode Single Resonator

Nagendra Kumar;Vamsi Krishna Velidi;Sivareddy Devireddy;Avg Subramanyam;V Senthil Kumar;Shriman Narayana

2024 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON)
Year: 2024 | Conference Paper |
This paper presents a novel multi-mode single resonator-based dual-band tunable bandpass filter (BPF). The layout is designed with a half-wavelength resonator centrally loaded with stubs. To tune the odd and even mode resonance frequencies, two varactors are connected at the open ends of the half-wavelength resonator that participate in the formation of two different passbands. A centrally loaded ...Show More

A Miniaturized Tunable Dual-band BPF With CABW Using Stub-Loaded Multi-Mode Single Resonator

Nagendra Kumar;Vamsi Krishna Velidi;Sivareddy Devireddy;Avg Subramanyam;V Senthil Kumar;Shriman Narayana

Year: 2024 | Conference Paper |

Compact Narrow-Band Sharp Rejection Bandstop Filter Using U-Shaped Resonator for GNSS Receiver

Nagendra Kumar;Vamsi Krishna Velidi;Sivareddy Devireddy;AVG Subramanyam;V Senthil Kumar;N Ramalakshmi

2024 IEEE Wireless Antenna and Microwave Symposium (WAMS)
Year: 2024 | Conference Paper |
An U-shaped resonator based bandstop filter (BSF) has been reported in this paper to reject the high power unwanted signal or interfere near to the desired signal. The BSF uses mixed coupling technique - electrical and magnetic - to realize its performance. The U-shaped resonators which are open on both sides are coupled to the feed-line or main line using a coupling gap. The resonators are approx...Show More

Compact Narrow-Band Sharp Rejection Bandstop Filter Using U-Shaped Resonator for GNSS Receiver

Nagendra Kumar;Vamsi Krishna Velidi;Sivareddy Devireddy;AVG Subramanyam;V Senthil Kumar;N Ramalakshmi

Year: 2024 | Conference Paper |

High Rejection Miniaturized Bandpass Filter with Controllable Transmission Zero using LTCC Technology

Avjit Roy Choudhury;Nagendra Kumar;Rahul Ravindran Menon;AVG Subramanyam;V Senthil Kumar;Suman. R. Valke;N Ramalakshmi;D Venkataramana

2022 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
A miniaturized and high rejection band pass filter (BPF) realized by low-temperature cofired ceramic technology are presented in this paper. The design consists of conducting patterns distributed on different dielectric layers. Grounded combline resonators loaded with capacitors are used as a basic topology for the design of the proposed filter. The capacitor has been realized using metal-insulato...Show More

High Rejection Miniaturized Bandpass Filter with Controllable Transmission Zero using LTCC Technology

Avjit Roy Choudhury;Nagendra Kumar;Rahul Ravindran Menon;AVG Subramanyam;V Senthil Kumar;Suman. R. Valke;N Ramalakshmi;D Venkataramana

Year: 2022 | Conference Paper |

Compact Coplanar-waveguide based Bandpass to Bandstop Switchable Filter with Distinct Inductive and Capacitive coupling

Shriman Narayana;Nagendra Kumar;Yatendra Kumar Singh

2022 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON)
Year: 2022 | Conference Paper |
A compact coplanar-waveguide (CPW) based switchable bandpass to bandstop filter has been presented in this manuscript. The bandpass consists of open-loop resonator which is centrally connected to the ground plane of CPW. The inductive and capacitive couplings are realized using grounding at the center and open ends of resonator respectively. These two couplings lead to two transmission zeros acros...Show More

Compact Coplanar-waveguide based Bandpass to Bandstop Switchable Filter with Distinct Inductive and Capacitive coupling

Shriman Narayana;Nagendra Kumar;Yatendra Kumar Singh

Year: 2022 | Conference Paper |

Design of Miniaturized Four-way Power Divider with Predefined Sequential Phase Difference for Antenna Feed Network

Aditya Anand Gupta;Nagendra Kumar;Vamsi Krishna Velidi;D Siva Reddy;A.V.G. Subramanyam;Senthil Kumar V;Ramalakshmi N;Venkataramana D

2022 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON)
Year: 2022 | Conference Paper |
The manuscript presents a miniaturized four-way power divider with a sequential phase difference of 90°. The proposed power divider is designed using one rat-race coupler (RRC) and two branch-line couplers (BLC). For the minia-turization three open stub conversion of a single transmission line technique with meandering has been used. A Four-way power divider for the frequency of 145.825 MHz is des...Show More

Design of Miniaturized Four-way Power Divider with Predefined Sequential Phase Difference for Antenna Feed Network

Aditya Anand Gupta;Nagendra Kumar;Vamsi Krishna Velidi;D Siva Reddy;A.V.G. Subramanyam;Senthil Kumar V;Ramalakshmi N;Venkataramana D

Year: 2022 | Conference Paper |

Miniaturized All stop to CABW tunable bandpass switchable filter using U-shaped multi-mode resonator

Nagendra Kumar;Aditya Anand Gupta;A.V.G. Subramanyam;Senthil Kumar V;Ramalakshmi N;Venkataramana D

2022 IEEE Microwaves, Antennas, and Propagation Conference (MAPCON)
Year: 2022 | Conference Paper |
Cited by: Papers (1)
A pin diode loaded multi-mode resonator (MMR) based tunable filter has been presented in this manuscript. The filter consists of U-shaped resonator which are loaded with varactor tuned stubs at the middle. Also the resonator is loaded with PIN-diodes at the end. The proposed filter has two modes of operation based on the condition of PIN diodes - BPF mode, when the PIN diodes are ON and switch-off...Show More

Miniaturized All stop to CABW tunable bandpass switchable filter using U-shaped multi-mode resonator

Nagendra Kumar;Aditya Anand Gupta;A.V.G. Subramanyam;Senthil Kumar V;Ramalakshmi N;Venkataramana D

Year: 2022 | Conference Paper |

Constant Absolute Bandwidth Tunable Symmetric and Asymmetric Bandpass Responses Based on Reconfigurable Transmission Zeros and Bandwidth

Nagendra Kumar;Shriman Narayana;Yatendra Kumar Singh

IEEE Transactions on Circuits and Systems II: Express Briefs
Year: 2022 | Volume: 69, Issue: 3 | Journal Article |
Cited by: Papers (5)
A two-pole reconfigurable and tunable bandpass filter (BPF) with constant absolute bandwidth (CABW) and tunable transmission zeros (TZs) is presented in this brief. The BPF consists of asymmetrical spiral resonators having open ends on one side and capacitor loaded on the other side. The varactor loaded coupled-feed scheme is used at input and output. The two coupling feed-lines are also coupled t...Show More

Constant Absolute Bandwidth Tunable Symmetric and Asymmetric Bandpass Responses Based on Reconfigurable Transmission Zeros and Bandwidth

Nagendra Kumar;Shriman Narayana;Yatendra Kumar Singh

Year: 2022 | Volume: 69, Issue: 3 | Journal Article |

Bayesian Approximation Filtering With False Data Attack on Network

Abhinoy Kumar Singh;Sumit Kumar;Nagendra Kumar;Rahul Radhakrishnan

IEEE Transactions on Aerospace and Electronic Systems
Year: 2022 | Volume: 58, Issue: 2 | Journal Article |
Cited by: Papers (10)
Very often, a measurement is transmitted through network systems before it is available for filtering. The network systems, designed with several communication channels, are prone to cyber-attacks. The cyber-attack often injects false data to alter the original measurement. This article develops a modified Bayesian approximation filtering method for nonlinear filtering with measurements altered du...Show More

Bayesian Approximation Filtering With False Data Attack on Network

Abhinoy Kumar Singh;Sumit Kumar;Nagendra Kumar;Rahul Radhakrishnan

Year: 2022 | Volume: 58, Issue: 2 | Journal Article |

Constant Absolute Bandwidth Tunable BPF with Reconfigurable Bandwidth Using Stubs-Loaded Grounded MMR

Nagendra Kumar;Aditya Anand Gupta;Vamsi Krishna Velidi;Avg Subramanyam;V Senthil Kumar;N Ramalakshmi;D Venkata Ramana;Shriman Narayana;Yatendra Kumar Singh

2021 IEEE MTT-S International Microwave and RF Conference (IMARC)
Year: 2021 | Conference Paper |
Cited by: Papers (2)
A third-order multi-mode resonator (MMR) based tunable bandpass filter (BPF) with constant absolute bandwidth (CABW) is presented in this manuscript. A varactor-loaded grounded half-wavelength resonator is centrally connected with varactor-loaded stubs. The odd mode of a half-wavelength resonator is tuned by symmetrically connected varactors whereas two consecutive even modes are tuned by varactor...Show More

Constant Absolute Bandwidth Tunable BPF with Reconfigurable Bandwidth Using Stubs-Loaded Grounded MMR

Nagendra Kumar;Aditya Anand Gupta;Vamsi Krishna Velidi;Avg Subramanyam;V Senthil Kumar;N Ramalakshmi;D Venkata Ramana;Shriman Narayana;Yatendra Kumar Singh

Year: 2021 | Conference Paper |

RF-MEMS-Based Bandpass-to-Bandstop Switchable Single- and Dual-Band Filters With Variable FBW and Reconfigurable Selectivity

Nagendra Kumar;Yatendra Kumar Singh

IEEE Transactions on Microwave Theory and Techniques
Year: 2017 | Volume: 65, Issue: 10 | Journal Article |
Cited by: Papers (39)
Bandpass (BP)-to-bandstop (BS) switchable filters using radio frequency microelectromechanical system switch are presented here. The filters are implemented in both single- and dual-band versions with variable fractional bandwidth (FBW). Tuning of transmission zeros (TZs) and transmission poles (TPs) for BP filter (BPF) and BS filter (BSF), respectively, is achieved in both single- and dual-band c...Show More

RF-MEMS-Based Bandpass-to-Bandstop Switchable Single- and Dual-Band Filters With Variable FBW and Reconfigurable Selectivity

Nagendra Kumar;Yatendra Kumar Singh

Year: 2017 | Volume: 65, Issue: 10 | Journal Article |

Tunable and switchable dual-band BPF with reconfigurable selectivity and bandwidth control

Nagendra Kumar;Yatendra Kumar Singh

2016 46th European Microwave Conference (EuMC)
Year: 2016 | Conference Paper |
Cited by: Papers (3)
A tunable dual-band bandpass filter (BPF) with reconfigurable selectivity and bandwidth control using varactor diodes has been presented in this paper. The proposed dualband BPF consists of two dual-mode microstrip resonators with centrally loaded stubs. It is shown that, the transmission zero (TZ) of a single dual-mode stub-loaded resonator can be tuned to lower or higher side of the passband. Us...Show More

Tunable and switchable dual-band BPF with reconfigurable selectivity and bandwidth control

Nagendra Kumar;Yatendra Kumar Singh

Year: 2016 | Conference Paper |

Compact Constant Bandwidth Tunable Wideband BPF With Second Harmonic Suppression

Nagendra Kumar;Yatendra Kumar Singh

IEEE Microwave and Wireless Components Letters
Year: 2016 | Volume: 26, Issue: 11 | Journal Article |
Cited by: Papers (14)
A compact tunable wideband bandpass filter (BPF) having constant absolute bandwidth (CABW) with tunable selectivity and second harmonic suppression is presented in this letter. The BPF is designed using non-uniform quarter-wave spiral resonators loaded with varactor diodes and a capacitively coupled stub. The BPF consists of combline coupled section also. It is shown that the inherent transmission...Show More

Compact Constant Bandwidth Tunable Wideband BPF With Second Harmonic Suppression

Nagendra Kumar;Yatendra Kumar Singh

Year: 2016 | Volume: 26, Issue: 11 | Journal Article |

Switchable compact widestopband bandstop filter to wideband bandpass filter

Nagendra Kumar;Yatendra Kumar Singh

2015 Asia-Pacific Microwave Conference (APMC)
Year: 2015 | Conference Paper |
Cited by: Papers (4)
In this paper, a switchable compact microstrip band-stop filter (BSF) to bandpass filter (BPF) using spiral resonator is reported. In BSF, spiral resonator has open ends as against to the shorted ends of the BPF. This concept is used to design the filter switchable so that in a single layout, the two filters - BSF and BPF - can be achieved. PIN diode is used for switching operation. Also a mathema...Show More

Switchable compact widestopband bandstop filter to wideband bandpass filter

Nagendra Kumar;Yatendra Kumar Singh

Year: 2015 | Volume: 1 | Conference Paper |

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