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Nagendra Prasad Pathak - One of the best experts on this subject based on the ideXlab platform.

  • Plasmonic Metamaterial Based Dual-Band Filter
    2019 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium), 2019
    Co-Authors: Nidhi Pandit, Rahul Kumar Jaiswal, Nagendra Prasad Pathak
    Abstract:

    This paper reports the design, analysis, and characterization of a dual-band Filter using the concept of plasmonic metamaterial. The Designed Filter consists of a multi-mode butterfly shape resonator, which is directly coupled through plasmonic transmission line with coupling gap g. The operational mechanism of the Filter has been explained through the even-odd mode analysis. The Designed Filter has dual-band response with the center frequencies of 1.78 GHz and 2.59 GHz. Measured insertion losses are ~1.5dB and return loss are better than 15dB for both the pass-bands. The proposed Filter will pave an important role in the design and development of plasmonic circuits and systems.

  • Centre frequency and BW reconfigurable multi-mode band-pass Filter with independently tunable TZs
    IET Microwaves Antennas & Propagation, 2019
    Co-Authors: Nidhi Pandit, Nagendra Prasad Pathak
    Abstract:

    This study reports the design, development and analysis of centre frequency and bandwidth (BW) reconfigurable multi-mode band-pass Filter with independently tunable transmission zeroes (TZs). The Designed Filter can tune lower TZ (TZ1) from 1.66 to 1.88 GHz (220 MHz) with lower-side BW tuning range 200-400 MHz and upper TZ (TZ2) from 2.32 to 2.48 GHz (120 MHz) with upper BW tuning range 430-630 MHz. The centre frequency of the Designed Filter can be tuned from 1.98 to 2.04 GHz (60 MHz). For the entire tuning range, the insertion loss of the Designed Filter is around 1.4-2.3 dB and return loss is better than 10 dB within the pass-band.

  • Spoof Surface Plasmon Polaritons Based Reconfigurable Band-Pass Filter
    IEEE Photonics Technology Letters, 2019
    Co-Authors: Rahul Kumar Jaiswal, Nidhi Pandit, Nagendra Prasad Pathak
    Abstract:

    This letter reports the design and analysis of the bandwidth (BW) reconfigurable band-pass Filter using spoof surface plasmon polaritons at THz/microwave frequency. The Designed Filter consists of a spoof SPP T-shape resonator in which tuning has been introduced using variable capacitor device (having a cutoff frequency in THz regimes). Even and odd mode analysis has been carried out for a better understanding of the phenomenon. The proposed concept of variable bandwidth at a THz frequency in the SSPP structure has been demonstrated through Co-EM simulation. For the experimental validation of the proposed approach, the Filter has been Designed at microwave frequency, developed on a 60 mil (1.52 mm) thick microwave laminate, and characterized using a Keysight Field-Fox analyzer N9918A. In THz and microwave frequency regime, the Designed Filter has 3-dB BW reconfigurability of 20 GHz (0.41-0.43 THz) and 300 MHz (100-400 MHz) with the insertion loss of ~3 dB and ~1.7 dB-3.2 dB, respectively. The proposed reconfigurable bandpass Filter will have an important role in the design and development of plasmonic circuits and systems.

  • Spoof Plasmonic-Based Band-Pass Filter With High Selectivity and Wide Rejection Bandwidth
    IEEE Photonics Technology Letters, 2019
    Co-Authors: Rahul Kumar Jaiswal, Nidhi Pandit, Nagendra Prasad Pathak
    Abstract:

    In this letter, we report the design theory and analysis of an end-coupled broadband spoof plasmonic based band-pass Filter (BPF) at sub-wavelength scale enabled by multi-mode grooved stepped impedance resonators (GSIRs) at THz frequency regime. The proposed GSIRs are end-coupled to each other and externally coupled to the source and load through spoof surface plasmon polaritons (SPP)-based transmission line. The Designed Filter has 3-dB bandwidth of 0.35 THz (from 0.17 THz to 0.52 THz) and fractional bandwidth (FBW) of 87.85%, respectively, with the shape factor of 1.35. The simulated transmission and reflection coefficients in the pass-band of proposed Filter are better than ~6 dB and 15 dB respectively. Also, 60 dB spurious rejection bandwidth of the Designed Filter in the upper stop-band is 1.3 THz (0.62-1.92 THz). For the validation of the proposed approach, similar design is implemented at microwave frequency due to the geometrical dependence feature of spoof SPP and its S-parameters response is presented. Such broadband BPF will pave a path to design and development of advanced integrated plasmonic circuits and systems for high-speed and low-loss THz wireless communication applications.

  • Spoof Plasmonics Based Band-Pass Filter Using T-Shaped Resonator and Metamaterial Particles
    2019 IEEE Indian Conference on Antennas and Propogation (InCAP), 2019
    Co-Authors: Nidhi Pandit, Rahul Kumar Jaiswal, Nagendra Prasad Pathak
    Abstract:

    This paper reports the design, development and experimental characterization of spoof plasmonics based bandpass Filter (BPF) using T-shaped resonator and metamaterial particles. The operational behavior of slow wave spoof SPP based T-shaped resonator has been explained through even-odd mode analysis. For input/output coupled feed, a corrugated groove based slow wave transmission line has been used. Further, by etching metamaterial particles in T-shaped resonating structure, lower operating frequency, better matching, and higher selectivity are achieved with the same physical dimension. The Designed Filter has a single band response with center frequency f0 of 3 GHz. Measured insertion loss is around ~3 dB and return loss is better than 10 dB for the pass-band. The proposed Filter has two transmission zeroes at both sides of the pass-band located at 2.97 GHz and 3.2 GHz which enhance the selectivity of the pass-band. The 10 dB out of band spurious rejection bandwidth of the Designed Filter is 4 GHz (3.2 GHz-7.2 GHz) which is > 2f0. The proposed Filter will pave an important role in the design and development of plasmonic circuits and systems.

In-shik Park - One of the best experts on this subject based on the ideXlab platform.

  • Stabilizing LD power in a wide temperature range for optical burst-mode communications by means of optical Filter
    IEEE Photonics Technology Letters, 2000
    Co-Authors: Nack Chung, Gil-ho Yang, In-shik Park
    Abstract:

    We propose an optical power stabilized LD module without APC circuit and monitor photodiode (PD) for optical burst-mode communications. It utilizes the temperature dependence of LD wavelength. With the Designed Filter, the power drop is suppressed to 0 dB at full operating temperature range and the optical signal power level reduction is only 1.2 dB at 15/spl deg/C and 0 dB at 700/spl deg/C in 1.3 μm InGaAsP-InP FP MQW LD. The method is demonstrated by using fiber-coupler-Filter, and the modulation characteristics are measured.

  • Stabilizing LD power in wide temperature range by means of optical Filter
    Fifth Asia-Pacific Conference on ... and Fourth Optoelectronics and Communications Conference on Communications, 1999
    Co-Authors: Nack-jin Chung, Gil-ho Yang, In-shik Park
    Abstract:

    We propose an optical power stabilized LD module without APC circuit and monitor PD. It utilizes the temperature dependence of the LD wavelength. With the Designed Filter, the power penalty is suppressed to 0 dB at full operating temperature range and the optical signal power level reduction is only 1.2 dB at 15/spl deg/C and 0 dB at 70/spl deg/C in 1.3 /spl mu/m InGaAsP/InP FP MQW LD. We also demonstrate the method by means of the fiber-coupler-Filter.

Rahul Kumar Jaiswal - One of the best experts on this subject based on the ideXlab platform.

  • Plasmonic Metamaterial Based Dual-Band Filter
    2019 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium), 2019
    Co-Authors: Nidhi Pandit, Rahul Kumar Jaiswal, Nagendra Prasad Pathak
    Abstract:

    This paper reports the design, analysis, and characterization of a dual-band Filter using the concept of plasmonic metamaterial. The Designed Filter consists of a multi-mode butterfly shape resonator, which is directly coupled through plasmonic transmission line with coupling gap g. The operational mechanism of the Filter has been explained through the even-odd mode analysis. The Designed Filter has dual-band response with the center frequencies of 1.78 GHz and 2.59 GHz. Measured insertion losses are ~1.5dB and return loss are better than 15dB for both the pass-bands. The proposed Filter will pave an important role in the design and development of plasmonic circuits and systems.

  • Spoof Surface Plasmon Polaritons Based Reconfigurable Band-Pass Filter
    IEEE Photonics Technology Letters, 2019
    Co-Authors: Rahul Kumar Jaiswal, Nidhi Pandit, Nagendra Prasad Pathak
    Abstract:

    This letter reports the design and analysis of the bandwidth (BW) reconfigurable band-pass Filter using spoof surface plasmon polaritons at THz/microwave frequency. The Designed Filter consists of a spoof SPP T-shape resonator in which tuning has been introduced using variable capacitor device (having a cutoff frequency in THz regimes). Even and odd mode analysis has been carried out for a better understanding of the phenomenon. The proposed concept of variable bandwidth at a THz frequency in the SSPP structure has been demonstrated through Co-EM simulation. For the experimental validation of the proposed approach, the Filter has been Designed at microwave frequency, developed on a 60 mil (1.52 mm) thick microwave laminate, and characterized using a Keysight Field-Fox analyzer N9918A. In THz and microwave frequency regime, the Designed Filter has 3-dB BW reconfigurability of 20 GHz (0.41-0.43 THz) and 300 MHz (100-400 MHz) with the insertion loss of ~3 dB and ~1.7 dB-3.2 dB, respectively. The proposed reconfigurable bandpass Filter will have an important role in the design and development of plasmonic circuits and systems.

  • Spoof Plasmonic-Based Band-Pass Filter With High Selectivity and Wide Rejection Bandwidth
    IEEE Photonics Technology Letters, 2019
    Co-Authors: Rahul Kumar Jaiswal, Nidhi Pandit, Nagendra Prasad Pathak
    Abstract:

    In this letter, we report the design theory and analysis of an end-coupled broadband spoof plasmonic based band-pass Filter (BPF) at sub-wavelength scale enabled by multi-mode grooved stepped impedance resonators (GSIRs) at THz frequency regime. The proposed GSIRs are end-coupled to each other and externally coupled to the source and load through spoof surface plasmon polaritons (SPP)-based transmission line. The Designed Filter has 3-dB bandwidth of 0.35 THz (from 0.17 THz to 0.52 THz) and fractional bandwidth (FBW) of 87.85%, respectively, with the shape factor of 1.35. The simulated transmission and reflection coefficients in the pass-band of proposed Filter are better than ~6 dB and 15 dB respectively. Also, 60 dB spurious rejection bandwidth of the Designed Filter in the upper stop-band is 1.3 THz (0.62-1.92 THz). For the validation of the proposed approach, similar design is implemented at microwave frequency due to the geometrical dependence feature of spoof SPP and its S-parameters response is presented. Such broadband BPF will pave a path to design and development of advanced integrated plasmonic circuits and systems for high-speed and low-loss THz wireless communication applications.

  • Spoof Plasmonics Based Band-Pass Filter Using T-Shaped Resonator and Metamaterial Particles
    2019 IEEE Indian Conference on Antennas and Propogation (InCAP), 2019
    Co-Authors: Nidhi Pandit, Rahul Kumar Jaiswal, Nagendra Prasad Pathak
    Abstract:

    This paper reports the design, development and experimental characterization of spoof plasmonics based bandpass Filter (BPF) using T-shaped resonator and metamaterial particles. The operational behavior of slow wave spoof SPP based T-shaped resonator has been explained through even-odd mode analysis. For input/output coupled feed, a corrugated groove based slow wave transmission line has been used. Further, by etching metamaterial particles in T-shaped resonating structure, lower operating frequency, better matching, and higher selectivity are achieved with the same physical dimension. The Designed Filter has a single band response with center frequency f0 of 3 GHz. Measured insertion loss is around ~3 dB and return loss is better than 10 dB for the pass-band. The proposed Filter has two transmission zeroes at both sides of the pass-band located at 2.97 GHz and 3.2 GHz which enhance the selectivity of the pass-band. The 10 dB out of band spurious rejection bandwidth of the Designed Filter is 4 GHz (3.2 GHz-7.2 GHz) which is > 2f0. The proposed Filter will pave an important role in the design and development of plasmonic circuits and systems.

Nidhi Pandit - One of the best experts on this subject based on the ideXlab platform.

  • Plasmonic Metamaterial Based Dual-Band Filter
    2019 USNC-URSI Radio Science Meeting (Joint with AP-S Symposium), 2019
    Co-Authors: Nidhi Pandit, Rahul Kumar Jaiswal, Nagendra Prasad Pathak
    Abstract:

    This paper reports the design, analysis, and characterization of a dual-band Filter using the concept of plasmonic metamaterial. The Designed Filter consists of a multi-mode butterfly shape resonator, which is directly coupled through plasmonic transmission line with coupling gap g. The operational mechanism of the Filter has been explained through the even-odd mode analysis. The Designed Filter has dual-band response with the center frequencies of 1.78 GHz and 2.59 GHz. Measured insertion losses are ~1.5dB and return loss are better than 15dB for both the pass-bands. The proposed Filter will pave an important role in the design and development of plasmonic circuits and systems.

  • Centre frequency and BW reconfigurable multi-mode band-pass Filter with independently tunable TZs
    IET Microwaves Antennas & Propagation, 2019
    Co-Authors: Nidhi Pandit, Nagendra Prasad Pathak
    Abstract:

    This study reports the design, development and analysis of centre frequency and bandwidth (BW) reconfigurable multi-mode band-pass Filter with independently tunable transmission zeroes (TZs). The Designed Filter can tune lower TZ (TZ1) from 1.66 to 1.88 GHz (220 MHz) with lower-side BW tuning range 200-400 MHz and upper TZ (TZ2) from 2.32 to 2.48 GHz (120 MHz) with upper BW tuning range 430-630 MHz. The centre frequency of the Designed Filter can be tuned from 1.98 to 2.04 GHz (60 MHz). For the entire tuning range, the insertion loss of the Designed Filter is around 1.4-2.3 dB and return loss is better than 10 dB within the pass-band.

  • Spoof Surface Plasmon Polaritons Based Reconfigurable Band-Pass Filter
    IEEE Photonics Technology Letters, 2019
    Co-Authors: Rahul Kumar Jaiswal, Nidhi Pandit, Nagendra Prasad Pathak
    Abstract:

    This letter reports the design and analysis of the bandwidth (BW) reconfigurable band-pass Filter using spoof surface plasmon polaritons at THz/microwave frequency. The Designed Filter consists of a spoof SPP T-shape resonator in which tuning has been introduced using variable capacitor device (having a cutoff frequency in THz regimes). Even and odd mode analysis has been carried out for a better understanding of the phenomenon. The proposed concept of variable bandwidth at a THz frequency in the SSPP structure has been demonstrated through Co-EM simulation. For the experimental validation of the proposed approach, the Filter has been Designed at microwave frequency, developed on a 60 mil (1.52 mm) thick microwave laminate, and characterized using a Keysight Field-Fox analyzer N9918A. In THz and microwave frequency regime, the Designed Filter has 3-dB BW reconfigurability of 20 GHz (0.41-0.43 THz) and 300 MHz (100-400 MHz) with the insertion loss of ~3 dB and ~1.7 dB-3.2 dB, respectively. The proposed reconfigurable bandpass Filter will have an important role in the design and development of plasmonic circuits and systems.

  • Spoof Plasmonic-Based Band-Pass Filter With High Selectivity and Wide Rejection Bandwidth
    IEEE Photonics Technology Letters, 2019
    Co-Authors: Rahul Kumar Jaiswal, Nidhi Pandit, Nagendra Prasad Pathak
    Abstract:

    In this letter, we report the design theory and analysis of an end-coupled broadband spoof plasmonic based band-pass Filter (BPF) at sub-wavelength scale enabled by multi-mode grooved stepped impedance resonators (GSIRs) at THz frequency regime. The proposed GSIRs are end-coupled to each other and externally coupled to the source and load through spoof surface plasmon polaritons (SPP)-based transmission line. The Designed Filter has 3-dB bandwidth of 0.35 THz (from 0.17 THz to 0.52 THz) and fractional bandwidth (FBW) of 87.85%, respectively, with the shape factor of 1.35. The simulated transmission and reflection coefficients in the pass-band of proposed Filter are better than ~6 dB and 15 dB respectively. Also, 60 dB spurious rejection bandwidth of the Designed Filter in the upper stop-band is 1.3 THz (0.62-1.92 THz). For the validation of the proposed approach, similar design is implemented at microwave frequency due to the geometrical dependence feature of spoof SPP and its S-parameters response is presented. Such broadband BPF will pave a path to design and development of advanced integrated plasmonic circuits and systems for high-speed and low-loss THz wireless communication applications.

  • Spoof Plasmonics Based Band-Pass Filter Using T-Shaped Resonator and Metamaterial Particles
    2019 IEEE Indian Conference on Antennas and Propogation (InCAP), 2019
    Co-Authors: Nidhi Pandit, Rahul Kumar Jaiswal, Nagendra Prasad Pathak
    Abstract:

    This paper reports the design, development and experimental characterization of spoof plasmonics based bandpass Filter (BPF) using T-shaped resonator and metamaterial particles. The operational behavior of slow wave spoof SPP based T-shaped resonator has been explained through even-odd mode analysis. For input/output coupled feed, a corrugated groove based slow wave transmission line has been used. Further, by etching metamaterial particles in T-shaped resonating structure, lower operating frequency, better matching, and higher selectivity are achieved with the same physical dimension. The Designed Filter has a single band response with center frequency f0 of 3 GHz. Measured insertion loss is around ~3 dB and return loss is better than 10 dB for the pass-band. The proposed Filter has two transmission zeroes at both sides of the pass-band located at 2.97 GHz and 3.2 GHz which enhance the selectivity of the pass-band. The 10 dB out of band spurious rejection bandwidth of the Designed Filter is 4 GHz (3.2 GHz-7.2 GHz) which is > 2f0. The proposed Filter will pave an important role in the design and development of plasmonic circuits and systems.

Nack Chung - One of the best experts on this subject based on the ideXlab platform.