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105 results on '"Sen, Sarbani"'

2. Modeling of a compact ultra-wideband bandpass filter with a single notch using DGS and DMS technology.

Author

Sen, Sarbani and Moyra, Tamasi

Subjects
*BANDPASS filters, *HIGHPASS electric filters, *WIRELESS communications, *NOTCH filters, *MICROSTRIP transmission lines
Abstract

A compact, low loss microstrip ultra-wideband (UWB) bandpass filter (BPF) with a narrow notch band is proposed in this article for using wireless communication applications within the unlicensed UWB range reported by the Federal Communications Commission. A systematic approach is presented to establish the UWB-BPF structure followed by a narrow notch within it. The UWB-BPF response is achieved by integrating a defected structures-based lowpass filter and a short-stepped impedance stub-based highpass filter. The narrow notch band is obtained by embedding two-stepped impedance stubs. The physical dimensions of the stubs can be optimized to select a specific frequency for the notch band. The UWB-BPF structure without the notched band, having a center frequency of 3.69 GHz, provides a fractional bandwidth (FBW) of 157%. The stopband suppression is −26 dB and it is broadened up to 15 GHz. On the other hand, the notched band response is obtained at 5.8 GHz with an FBW of 49.78% which is used for avoiding interference from the wireless local area network. The proposed structures are fabricated and measured for experimental validation. [ABSTRACT FROM AUTHOR]

Published
2024
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3. Modelling of defected structures and stub based compact ultra-wideband bandpass filter (UWB-BPF) with a single notched band.

Author

Mandal, Arpita, Sen, Sarbani, Devarapalli, Ananda Babu, Das, Kaushik, and Moyra, Tamasi

Subjects
*ULTRA-wideband communication, *WIRELESS communications, *HIGHPASS electric filters, *5G networks, *MICROSTRIP transmission lines, *MICROSTRIP filters
Abstract

In this article, a low loss and compact microstrip ultra-wideband bandpass filter (UWB-BPF) with a narrow-notched band is recommended for suitable applications in ultra-wideband wireless communication systems. The design methodology is presented to develop the microstrip structure of the UWB-BPF pursued by a single notched band (NB) in the passband of the UWB filter. An array of I-shaped defected ground structures and L-shaped defected microstrip structures based lowpass filters is cascaded with a shorted stub based highpass filter to achieve a UWB-BPF response. The two identically folded open stubs are loaded to obtain the narrow NB. The center frequency of the UWB-BPF without the NB is 3.5 GHz, and the stopband is suppressed up to 14.5 GHz. The fractional bandwidth achieved is 160%, with a circuit area of 0.11 ${\rm{\lambda }}_{\rm{g}}^{\rm{2}}$ λ g 2 . Furthermore, the single NB is attained at 5.7 GHz to reject interferences of signal from the 5G network with an attenuation level of 59 dB. The electromagnetic simulated and experimental responses of the designed structures demonstrate a well-matched behavior among them. The NB at 5.7 GHz in the UWB-BPF passband region suppresses the signal interference from the 5G network (5500 MHz), WLAN (5900 MHz), and WiMAX (5800 MHz). [ABSTRACT FROM AUTHOR]

Published
2024
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4. Coplanar Waveguide UWB Bandpass Filter Using Defected Ground Structure and Interdigital Capacitor

Author

Verma, Pratibha, Moyra, Tamasi, Sarkar, Dwipjoy, Bhowmik, Priyansha, Sen, Sarbani, Kumar, Dharmvir, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Panigrahi, Chhabi Rani, editor, Pujari, Arun K., editor, Misra, Sudip, editor, Pati, Bibudhendu, editor, and Li, Kuan-Ching, editor

Published
2019
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5. Design of a Compact Ultra-wideband Bandpass Filter Employing Defected Ground Structure and Short-Circuited Stubs

Author

Sen, Sarbani, Moyra, Tamasi, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Pati, Bibudhendu, editor, Panigrahi, Chhabi Rani, editor, Misra, Sudip, editor, Pujari, Arun K., editor, and Bakshi, Sambit, editor

Published
2019
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20. A Low-Cost Compact Low-Pass Filtering Power Divider Based on Elliptic Function with Wide Attenuation Band.

Author

Sen, Sarbani and Moyra, Tamasi

Subjects
*POWER dividers, *ELLIPTIC functions, *ELECTRIC power filters, *FREQUENCY dividers, *INSERTION loss (Telecommunication), *BANDPASS filters, *ATTENUATION (Physics)
Abstract

A filtering power divider (FPD) with low-pass property and wideband harmonic suppression is presented in this paper. The microstrip structure of the FPD is designed based on elliptic function. The open stubs are embedded in the transmission line to obtain low-pass effect. An isolation resistor of 100Ω is connected between the two output ports to achieve good isolation. The operating frequency of the power divider is 2.9 GHz and the low-pass filter (LPF) has the cut-off frequency of 3 GHz with a sharpness factor of 55 dB/GHz. The attenuation band is extended up to 20 GHz (simulated) with a suppression of −19 dB. The maximum insertion loss in the passband for the FPD is −3.6 dB and the structure occupy an area of 0.7 λ g × 0.21 λ g . A lumped equivalent circuit of the LPF structure is also proposed. The LPF and the FPD both are fabricated using low-cost substrate FR4 of height (h) of 0.8 mm, a dielectric constant (εr) of 4.4, conductor thickness (t) of 0.04 mm and loss tangent (δ) of 0.02. For experimental verification, the measured data are compared with the simulated ones. [ABSTRACT FROM AUTHOR]

Published
2022
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25. Interdigital Capacitor Based Compact Microstrip Bandpass Filter with Wide Stopband.

Author

Sen, Sarbani and Moyra, Tamasi

Subjects
*BANDPASS filters, *MICROSTRIP filters, *CIRCUIT complexity, *TRANSMISSION zeros, *CAPACITORS, *INSERTION loss (Telecommunication), *WIRELESS communications
Abstract

A compact, low-cost microstrip bandpass filter (BPF) with low insertion loss and wide attenuation band is presented in this article. The proposed structure consists of multiple interdigital capacitor sections and a T-shaped stub which is connected to the ground using via. The wide stopband response is achieved by the inclusion of defected ground structures (DGS). Addition of these defected ground structures also reduces the circuit size. The designed BPF of centre frequency 0.9 GHz is fabricated, measured, and its lumped equivalent circuit is also obtained. A good agreement is found among IE3D simulated results, circuit simulated results, and the measured results. The obtained results for the proposed bandpass filter (BPF) are −3 dB fractional bandwidth (FBW) of 63% and minimum insertion loss of 0.59 dB. The relative stop band (RSB) rejection is found up to 177% and the normalized circuit size (NCS) is found 0.012 λ g 2 . This proposed filter can be used for GSM and other microwave circuitry in wireless communication system. [ABSTRACT FROM AUTHOR]

Published
2021
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35. The ‘Public Interest’ in India: Contestation and Confrontation before the Supreme Court.

Author

Sen, Sarbani

Subjects
*CITIZEN suits (Civil procedure), *ACTIONS & defenses (Law), *PUBLIC interest law, *JURISDICTION, *SOCIAL justice
Abstract

The article discusses the jurisdiction over Public Interest Litigation as has been appropriated by the Supreme Court of India. Topics included are the expansion of government accountability over constitutional guarantees for social and economic justice, the examination of how litigation decisions promote rights jurisprudence, and the expectation that the state will follow through on socio-economic welfare legislation for marginalized groups.

Published
2013
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38. The Nielsen Qualitative View.

Author

Sen, Sarbani

Subjects
FOOD industry
Abstract

The article presents the qualitative view of market research firm Nielsen India on the food industry of India.

Published
2014

39. Cover story: The new urban junkie.

Author

Chhabra, Arvind, Deka, Kaushik, Tare, Kiran, Patel, Mitali, Sra, Gunjeet, Subramaniam, Lakshmi, Sen, Sarbani, and David, Stephen

Subjects
SUBSTANCE abuse, MIDDLE class, AMPHETAMINES, DRUGS, DEVELOPING countries
Abstract

The article deals with the growing number of substance abusers among India's middle class. It says that these people, including working professionals and students, take amphetamine-type stimulants (ATS) and prescription drugs to be cool and to cope with the pressures of work. Since many of these drugs are not illegal, regulation and control of them are difficult. According to a United Nations Office on Drugs and Crime (UNODC) report, this is a growing phenomenon among third world countries, and the Indian government has begun to address the problem.

Published
2010

40. India's best colleges: Commerce.

Author

Sen, Sarbani and Subramanian, Lakshmi

Subjects
BUSINESS schools, UNIVERSITY rankings, UNIVERSITIES & colleges
Abstract

The article features the leading commerce schools in India in 2010. Saint Xavier's College was able to dislodge Delhi, India-based Shri Ram College of Commerce (SRCC) at the top spot due to its exemplary curriculum and outstanding infrastructure. Reverend J. Felix Raj of Saint Xavier cited the good performance of the students and staff members to the school's success. The other leading commerce schools include Loyola College.

Published
2010

41. India's best colleges.

Author

Menon, Amarnath K., Sen, Sarbani, Madhok, Diksha, Vaish, Nandini, and Parihar, Rohit

Subjects
UNIVERSITIES & colleges, UNIVERSITY rankings, LABOR supply, EDUCATIONAL change laws
Abstract

The article discusses the journal's list of best colleges in India for 2010. It presents the results of the study made by think tank Heritage Foundation, which showed that India will have the biggest national workforce and the youngest age profile among huge economies by 2028. It cites the educational reform laws that were filed at the Parliament, including the Foreign Educational Institutions (Regulation of Entry and Operation) Bill, which was already approve. The top colleges include the Shri Ram College of Commerce (SRCC) and Saint Xavier's College.

Published
2010

42. India's Best Science colleges.

Author

Sood, Priyanka, Subramanian, Lakshmi, and Sen, Sarbani

Subjects
UNIVERSITY rankings, UNIVERSITIES & colleges, CHEMISTRY education in universities & colleges, PHYSICS education (Higher), SCIENCE education (Higher)
Abstract

The article features the best science colleges in India as of 2010. At the top spot, Loyola College-Chennai, is dislodged by Saint Stephen's-Delhi. The other top colleges include Presidency College-Kolkata, Christ College-Bengalore, and Hansraj College-Delhi. Among the courses being offered by Saint Stephen's include a three-year integrated degree course in chemistry and physics.

Published
2010

43. Hubs of excellence.

Author

Subramanian, Lakshmi, Mishra, Subhash, Madhok, Diksha, Pithauria, Rohit, and Sen, Sarbani

Subjects
UNIVERSITIES & colleges
Abstract

The article presents information on the top five universities included in "India Today's" Top Universities in 2010. Banaras Hindu University has included several courses in its syllabi since it was established in 1916 by social reformer and freedom fighter Madan Mohan Malviya. Built in 1969, Jawaharlal Nehru University was the home of several notable people in India and continues to remain one of the premier research institutes across Asia despite accusations of brutality in 2008.

Published
2010

44. Above aboard.

Author

Sen, Elora and Sen, Sarbani

Subjects
LEISURE, BUSINESSMEN
Abstract

The article features top businessmen in India and how they spend their free time. Sumantra Banerjee, MD, CESC, president and chief executive of the RPG Group shares that he occupies his free time traveling for nature and photography and charity work. Samarjit Choudhury, assistant vice president and regional head of Axis Bank engages in Xtreme Paintball with friends for recreation. Ranvir Bhandari, area manager-east and general manager of ITC Sonar enjoys golf, while Amit Mukerjee, VP-IT and Supply Chain of Spencer's plays badminton.

Published
2010

45. Riding high.

Author

Sen, Sarbani

Subjects
ATHLETIC clubs, POLO, POLO training & conditioning
Abstract

The article focuses on Deepshikha Pasari, member of the Calcutta Polo Club. She relates how she was inspired to play polo, which began with her father, Chandrakant Pasari, taking her to the stables and polo games. She adds that their coach, Narpat Singh, shares his experience and expertise as a polo player, training them to become better at the game as each day passes. According to Pasari, polo is a game needing skills and speed, and she is grateful for friends and family who are proud of her.

Published
2010

46. One fine day.

Author

Sen, Sarbani

Subjects
TOURIST attractions, PICNICS, HARBORS, AMUSEMENT parks, SCIENCE museums
Abstract

The article offers information on several tourist attractions in India where families and friends can have a picnic during the winter break. The Diamond Harbour located on the bank of the Ganges is considered as a popular picnic spot that provides views of the river. The Nicco Park in Salt Lake offers joyrides, entertainment and a food court to its visitors. The Science City hosts shows for children and exhibits several scientific and technological items.

Published
2009

47. My wanderlust.

Author

Sen, Sarbani and Sen, Elora

Subjects
TRAVELERS, VOYAGES & travels
Abstract

The article features the getaway stories of several Indian travelers. Actor Aparajita Gosh Das is said to often visit the town of Darjeeling to see the mountains. Restaurateur Kiranjeet Kaur travels to London, England, where she has lived before, and to Punjab to visit her grandparents in Ropar and the beaches in Goa. Fashion designer Kallol Datta goes to Delhi to eat at the restaurants there and to buy silver jewelry.

Published
2009

48. Feeling at home.

Author

Sen, Sarbani

Subjects
BED & breakfast accommodations, GUESTHOUSES
Abstract

The article focuses on the bed and breakfast accommodations in Kolkata, India. It notes that such accommodations allow tourists traveling on a tight budget to stay in an affordable yet hospitable environment and enjoy great food. The bed and breakfast scheme was said to be initiated by the government. Accommodations in the city include the boutique guest house Bodhi Tree owned by Santasree Chaudhuri at Swiss Park and the home of the family of B. M. Lahiri on Sarat Chatterjee Road.

Published
2009

49. Five days looks.

Author

Sen, Sarbani

Subjects
FASHION designers, PUJA (Hinduism), MEN'S clothing
Abstract

The article presents puja looks created by fashion designers in Kokata, India. The clothes by Parimata Banerjee is based on two colors, rust orange and mustard. Vinit Agarwal suggested using Davidoff's perfume and Calvin and Klein cosmetics. Agnimitra Paul recommended wearing animal print T-shirts and long dresses.

Published
2009

50. Men in vogue.

Author

Sen, Sarbani

Subjects
FASHION, MEN'S clothing, MEN, JEWELRY, PUJA (Hinduism), WRIST watches
Abstract

The article offers fashion tips for men in Kolkata, India. During Puja, it is suggested to wear kurtas in angarakah style, preferably subtle colors such as pristine white and clear grey. It is suggested not to wear make up and go for a clean look. It is advised to use a classy brand of perfume and wear jewelry such as chains and watches.

Published
2009

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