Theses and Dissertations

Permanent URI for this collectionhttp://ir.daiict.ac.in/handle/123456789/1

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    Novel circular fractal antenna array
    (Dhirubhai Ambani Institute of Information and Communication Technology, 2018) Chauhan, Rahul; Gupta, Sanjeev
    Traditional antennas work well only for one resonant frequency and using multiple antennas for different frequencies is a complex task, therefore multiband circular fractal antenna was designed which have a small size and multiple resonating frequencies for UltraWideband Applications (UWB). For designing and fabrication of the antenna the substrate used is FR4 which have dielectric constant 4.4 and whose dimensions are 48 96mm2. For the excitation of the antenna microstrip feed line of 50W is fed to the circular fractal patch for impedance matching. The UWB characteristics can be achieved using fractal concept. Also to increase the bandwidth, slots of different dimensions are etched out from the ground plane from the basic fractal configuration. Slots dimensions are adjusted in each iteration to achieve the desired results. In the later part of the work, different array configurations of the circular fractal antenna are analyzed. The various arrays design configurations are 1 2, 1 4, 2 2 and 2 4. The substrate used is FR4 whose dimension is varied according to the array configurations. Similar to basic antenna design a 50W microstrip feedline is used to excite the antenna for all the configurations. The antenna shows stable radiation patterns and good return loss values i.e better than 10dB at multiple frequencies. All the analysis is done in HFSS 2014.
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    Super Gaadi: vintage cars of Vanthali
    (Dhirubhai Ambani Institute of Information and Communication Technology, 2016) Bhambhlani, divya & Mehta, Miraj; Majumdar, Madhumita
    This is Communication Design Project that brings together the story of the entangled lives of place, objects and people in an interesting narrative format. Drowing upon historical and ethnographic approaches it brings to life a small place on the tourist map of Gujarat and unravels the mystique around its prized possession - a series of ford Super Delux cars. Culturally, the interaction between objects and people is very interesting phenomenon. People give meaning to object and similarly objects define people.
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    Urban soundscapes: an exploration of why and how, we hear, what we do...
    (Dhirubhai Ambani Institute of Information and Communication Technology, 2008) Kadam, Neha; Mazumdar, Madhumita
    Urban soundscapes is a multimedia exploration of the forms, practices and habits of engaging with sound in a contemporary urban Indian context. It focuses on the listening habits of a section of the urban Indian youth and invites critical reflection on the choices they make in the selection and enjoyment of the sounds that come to them through the mediation modern technology. Put simply, Urban Soundscapes is both an exploration and reflection on why we hear what we do as we live our lives in the complex sonic environment of the modern city. It begins on the premise that the urban soundscape is not a random collection of sounds. Sounds in the city come in forms, patterns, designs and shapes that are tied to dominant economic structures and local cultural contexts. It invites the user to explore this observation through four different points of entry through technology, through the consumer, the music market and of course through the makers of music themselves. The role of technology in creating a complex and evolving urban soundscape is underscored by a focus on the particular forms, tastes, and habits of listening to music by a dominant section of the urban Indian youth. Based on both fieldwork and academic writings on the subject, this product tries to present a complex cultural and social phenomenon in a format that tries to appeal to both the initiated and informed. It can in a sense position itself as educational software that tries to complement serious writing on the subject by putting together the constitutive elements of multi‐media on a digital medium that is both attractive and affordable. It does not in any way pretend to be either a comprehensive or definitive work on the subject. It offers instead the possibility of generating a critical awareness of one’s social and cultural context in a way that is both intelligible and entertaining.
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    Low cost design of IFFT module for dolby AC-3 decoder
    (Dhirubhai Ambani Institute of Information and Communication Technology, 2008) Gupta, Akshay Kumar; Dubey, Rahul
    Dolby AC-3 is a flexible audio data compression technology capable of encoding a range of audio channel formats into a low rate bit stream. AC-3 is the de facto audio standard for high-end digital consumer multimedia equipment. In this thesis work we have implemented 8 point FFT module using radix-2 algorithm. This work also shows the implementation of 128 point IFFT module using split radix algorithm.