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Papers by Pavan Kumar Shukla

2022 3rd International Conference on Intelligent Engineering and Management (ICIEM)

International Journal of Microwave and Wireless Technologies

This article presents wideband metamaterial cross-polarizer (MCP) structure for X-band applicatio... more This article presents wideband metamaterial cross-polarizer (MCP) structure for X-band applications. The proposed MCP consists of a splitted square-shaped resonating structure with two inner and one outer stub. It has an overall dimension of 8.6 mm × 8.6 mm. A wideband polarization conversion ratio (PCR) above 0.87 magnitude is achieved with a bandwidth of 3.49 GHz ranging from 8.8 to 12.29 GHz, which works for X (8–12 GHz) band. The PCR bandwidth of full width half maxima achieved is 4.55 GHz ranging from 8.5 to 13.05 GHz. Two distinct PCR peaks are observed at 9.44 and 11.47 GHz with PCR magnitude at 99.39 and 99.00% respectively. The normalized impedance and electromagnetic parameters (real and imaginary) curves proved the presence of metamaterial properties in the region of interest. Analysis of polarization conversion phenomena at two distinct frequencies is described with the help of electric field and current distribution. The structure is replicated using ANSYS HFSS 19.1 and...

This paper presents coaxial feed rectangular microstrip patch antenna. A narrow Lshaped microstri... more This paper presents coaxial feed rectangular microstrip patch antenna. A narrow Lshaped microstrip antenna is fed at the corner using a coaxial feed to obtain a LP operation. Experiments are carriedout to investigate its return loss, its radiation and its time domain behavior, which exhibit good radiation pattern. The simple rectangular and compact L-shaped microstrip antenna is simulated with IE3D and their corresponding result is compared.

IOSR Journal of Engineering, 2012

OPTIMIZATION, 2012

... Pavan Kumar Shukla1 and RK Singh2 1Department of Electronics and Communication Engineering, R... more ... Pavan Kumar Shukla1 and RK Singh2 1Department of Electronics and Communication Engineering, RKGIT, Ghaziabad, India, pavan.shukla@rediffmail.com 2Uttarakhand Technical University, Deharadun, India, rksinghkec12@rediffmail.com ... [13] Ramjee Prasad, Universal ...

At both the ends of transmitter and receiver the realization of terabit per second high speed and... more At both the ends of transmitter and receiver the realization of terabit per second high speed and high spectralefficiency optical transmission is required. This paper describes the use of much lower speed electronics and optoelectronics through parallel processing of coherent optical frequency combs .The coherent and parallel processing enables electrical-tooptical and optical-to-electrical (E/O and O/E) conversion of wide-bandwidth optical signals which would otherwise exceeds the capability of conventional optoelectronics. As given in this research paper, an optical frequency comb (OFC) generator provides 16 comb lines with less than 3.5-dB power variation. Subsequently, 1.115-Tb/s modulation capability is realized on 32 106 OFDM subcarriers with 16-QAM modulation in a 318-GHz seamless optical bandwidth.  Serials Publications, ISSN : 0973-7383

In this paper, the various favorable channel characteristics for optical OFDM have been discussed... more In this paper, the various favorable channel characteristics for optical OFDM have been discussed and presented .When we are using an indoor or outdoor wireless optical channel for the transmission of optical OFDM signals ,then an antenna system of 60 GHz freq. range is required. So for these particular applications of optical OFDM system a Di-pole antenna is proposed .Its design considerations and the simulated results are given in this paper. Performance of the proposed antenna is analyzed in terms of the reflection loss and its radiation pattern. Here a wireless system of super-broadband 60 GHz photonic optical OFDM system .In this paper we also used a cascaded optical RF and data modulation approach in which the advanced photonic components and a highspectral efficient QAM-OFDM modulation format is utilized. Finally we realized a compact 60 GHz photonic wireless system having a better spectral efficiency. We may also achieve very high data throughputs by making use of the 7 GHz spectral bandwidth in the 60 GHz band.

International Journal of Electrical and Electronics Research

Protecting patient information in medical image watermarking poses a significant challenge, espec... more Protecting patient information in medical image watermarking poses a significant challenge, especially when traditional methods like the Arnold transform prove inadequate in ensuring security. This paper introduces a novel approach within the Discrete Wavelet Transform (DWT) domain to address this issue effectively. By employing the Advanced Encryption Standard (AES), the security and robustness of the system are greatly enhanced through the encryption of both the medical image and patient data. The encrypted medical image undergoes a 2-level DWT process, allowing the concealment of encrypted patient information while maintaining its invisibility. This proposed scheme surpasses others in experimental evaluations, as evidenced by metrics such as PSNR and NC, solidifying its position as a more secure choice for medical image watermarking. The results validate the scheme’s robustness and imperceptibility.