Ambedkar Polytechnic

New Delhi, India

Ambedkar Polytechnic

New Delhi, India

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Sharma A.,AIACT and R | Gupta S.K.,Ambedkar Polytechnic | Kanaujia B.K.,AIACT and R | Pandey G.P.,MAIT
Proceedings - 4th International Conference on Computational Intelligence and Communication Networks, CICN 2012 | Year: 2012

This paper presents a novel, highly compact, and multiband circular patch antenna. The paper includes the analytical study on the meandered circular patch antenna and single unit cell of a Split Ring Resonator based metamaterial substrate for the multiband operations and further lowering of resonant frequencies obtained with shorting posts observed from the return loss curve. Circuit model of SRR configuration is also presented. Effects of complementary SRR slot on the ground plane are parametrically studied. Proposed configuration with huge amount of compactness of around 48% covers two bands of microwave regime around 4-12 GHz i.e. in C and X-bands and thus applications pertaining to this regime are also discussed. © 2012 IEEE.


Pandey G.P.,Maharaja Agrasen Institute of Technology | Pandey G.P.,Uttarakhand Technical University | Kanaujia B.K.,Ambedkar Institute of Advanced Communication Technologies and Research | Gupta S.K.,Ambedkar Polytechnic | And 2 more authors.
Wireless Personal Communications | Year: 2013

A new frequency agile BST varactor loaded stacked circular microstrip antenna is presented. The antenna is analysed using extended cavity model. One of two bands of antenna is tunable with the help of BST varactor. The upper band is useful for WiMAX and lower band for other wireless communication systems. Various antenna parameters like return loss, resonant frequency, frequency agility etc. have been investigated. The simulated results agree well with the numerical data. A frequency agility of 60.64 % is achieved, which is better than simple Varactor diode loaded antenna. Lowest resonant frequency of 0.866 GHz is obtainable that shows a significant physical area reduction. The group delay of S11 remains constant for entire band of operation. © 2013 Springer Science+Business Media New York.


Gupta S.K.,Ambedkar Polytechnic | Gupta S.K.,Uttarakhand Technical University | Sharma M.,Ambedkar Institute of Advanced Communication Technologies and Research | Kanaujia B.K.,Ambedkar Institute of Advanced Communication Technologies and Research | And 3 more authors.
Wireless Personal Communications | Year: 2014

In this paper a novel structure of annular ring loaded stacked circular patch microstrip antenna is theoretically analysed to observe various parameters such as return loss, input impedance, gain, directivity and radiation pattern. It is found that antenna possess three band of operation which signify the compactness and multiband operation of antenna. The antenna is resonating at three operating frequencies 1.720, 2.950, 3.060 GHz. The proposed theory is verified by simulation using Ansoft's HFSS and theoretical results are in good agreement with simulated results. The antenna is useful for multi-services operations such as WLAN, GSM, UMTS, and WiMAX services. © 2013 Springer Science+Business Media New York.


Pandey G.P.,Maharaja Agrasen Institute of Technology | Kanaujia B.K.,Ambedkar Institute of Advanced Communication Technologies & Research | Gupta S.K.,Ambedkar Polytechnic | Gautam A.K.,G. B. P. E. C.
Wireless Personal Communications | Year: 2014

In this paper a novel antenna with frequency notch characteristic has been presented. The antenna consists of a C-shaped microstrip antenna with two symmetrical notches and a rectangular parasitic patch. The antenna has tunable property due to integrated pin diode. When pin diode is OFF the antenna works like an ultra wide band antenna from 5 to 8 GHz. But when diode is ON the antenna has two bands separated by a small band-frequency notch. The antenna has very high cross polarization attenuation. The whole antenna is simulated on MoM based full wave electromagnetic simulator IE3D and fabricated. The results are in close resemblance. © 2014, Springer Science+Business Media New York.


Pandey G.P.,Maharaja Agrasen Institute of Technology | Kanaujia B.K.,Ambedkar Institute of Advanced Communication Technologies and Research | Gupta S.K.,Ambedkar Polytechnic | Gautam A.K.,G. B. P. E. C.
Wireless Personal Communications | Year: 2014

In this paper a novel antenna with frequency notch characteristic has been presented. The antenna consists of a C-shaped microstrip antenna with two symmetrical notches and a rectangular parasitic patch. The antenna has tunable property due to integrated pin diode. When pin diode is OFF the antenna works like an ultra wide band antenna from 5 to 8 GHz. But when diode is ON the antenna has two bands separated by a small band-frequency notch. The antenna has very high cross polarization attenuation. The whole antenna is simulated on MoM based full wave electromagnetic simulator IE3D and fabricated. The results are in close resemblance. © 2014 Springer Science+Business Media New York.


Pandey G.P.,Maharaja Agrasen Institute of Technology | Kanaujia B.K.,National Institute of Technology Jalandhar | Gautam A.K.,GBPEC | Gupta S.K.,Ambedkar Polytechnic
Wireless Personal Communications | Year: 2013

An analysis and design of a novel ultra wideband L-strip proximity coupled slot loaded circular microstrip antenna is proposed. The theoretical model is developed using circuit theoretic approach and obtained results are validated by MoM based IE3D simulation software. Theoretical results show a good agreement with simulated results. The patch is designed on a thick substrate of thickness 11 mm for a design frequency of 3.74 GHz and provides ultra wide band operation. The parametric study is carried out for return loss, radiation pattern, antenna efficiency, radiation efficiency and gain. It is observed that the bandwidth of the antenna depends on slot parameter and L-strip feed dimensions. An ultra bandwidth of 2.82 GHz is achieved with consistent radiation characteristics. © 2012 Springer Science+Business Media, LLC.


Gupta S.K.,Ambedkar Polytechnic | Kanaujia B.K.,Ambedkar Institute of Advanced Communication Technologies and Research | Pandey G.P.,Maharaja Agrasen Institute of Technology
Wireless Personal Communications | Year: 2013

A novel model of a wide frequency range double MOS loaded circular microstrip patch antenna with airgap between ground plane and substrate is proposed. In this structure two metal oxide semiconductor (MOS) devices are loaded on the patch to enhance the operating frequency range of antenna. To investigate the antenna, different parameters such as resonance frequency, input impedance, frequency agility, VSWR, radiation pattern etc. are calculated and simulated. The resonant frequency of proposed 10 mm radius patch is upward shifted from 5.2 to 6.8 GHz using 1 mm airgap and by loading MOS, antenna can be tuned down to 1.27 GHz operating frequency, which leads to compactness and tunability of antenna. Proposed antenna can be tuned between 1.27 and 6.8 GHz frequency of operation which makes the antenna highly suitable for wide frequency range of mobile communication. The proposed double MOS loaded antenna possessed 82.94 % frequency agility. The antenna is worth for GPS, WLAN, UMTS, and WiMAX operations. © 2012 Springer Science+Business Media New York.


Pandey G.P.,Maharaja Agrasen Institute of Technology | Kanaujia B.K.,National Institute of Technology Jalandhar | Gupta S.K.,Ambedkar Polytechnic | Jain S.,National Institute of Technology Jalandhar
International Journal of Radio Frequency Identification Technology and Applications | Year: 2011

In this paper, a compact H-shaped microstrip antenna loaded with tunnel diode is proposed and investigated theoretically. The H-shaped patch is investigated, and it has been concluded that a notch dimension of 8 mm by 6 mm gives best results. Then, the tunnel diode is loaded, which provides tunability to the microstrip antenna. The numerical results for input impedance, return loss, resonant frequency and radiation pattern are presented and compared with simulated results. The radiation pattern is varied from 63.8° to 60.6°with bias voltage, and a frequency agility of 25.28% has been achieved. © 2011 Inderscience Enterprises Ltd.


Sharma A.,AIACTR | Gupta S.K.,Ambedkar Polytechnic | Kanaujia B.K.,AIACTR | Pandey G.P.,MAIT
Proceedings - 4th International Conference on Computational Intelligence and Communication Networks, CICN 2012 | Year: 2012

This paper presents a novel slit cut circular patch antenna (SC-CPA) with supers rate. An analysis of triple band slit cut circular patch antenna with supers rate is presented and results are verified by simulation. Various parameters of antenna such as input impedance, return loss and gain are investigated. The parametric study of frequency response of antenna is carried out for different heights of dielectric supers rate or cover causing the lowering of the resonant frequencies. The proposed antenna possessing triple band characteristics and resonates at 7.2 GHz, 8.5 GHz, and 10 GHz. Antenna possess a peak gain of 2.15 dB with a compactness level of around 20%. Antenna is investigated to provide protection from environmental hazards and it is worth for triple band operations. © 2012 IEEE.


Gupta S.K.,Ambedkar Polytechnic | Sharma A.,Ambedkar Institute of Advanced Communication Technologies and Research | Kanaujia B.K.,Mahatma Jyotiba Phule Rohilkhand University | Rudra S.,Ambedkar Institute of Advanced Communication Technologies and Research | And 2 more authors.
Microwave and Optical Technology Letters | Year: 2013

In this paper, a novel orthogonal slit cut stacked circular patch antenna (SC-SCPA) is proposed for multi band operations. The antenna structure is investigated by cutting two pair of orthogonal slits on the upper patch whose effects are studied in terms of the return loss, input impedance, gain, directivity, and radiation pattern. Multiple resonances are observed that too at lower frequency signifying the compactness and multiband nature of the proposed antenna. The antenna is resonating at four operating frequencies 7.4, 9.0, 9.4, and 10.8 GHz, and 27% reduction in size is achieved by slit cut stacked patch antenna. The proposed theory which is verified by simulation and theoretical results is in good agreement with the simulated results obtained by Ansoft's HFSS. The antenna is working in X-band from 7 to 12 GHz and applications pertaining to this regime are also discussed herein. © 2012 Wiley Periodicals, Inc.

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