Sökning: "I. Katardjiev"

Hittade 4 avhandlingar innehållade orden I. Katardjiev.

1. 1. AlN Thin Film Electroacoustic Devices

   Författare :Gonzalo Fuentes Iriarte; I.V. Katardjiev; G.F. Iriarte; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical engineering; Elektroteknik; elektronik och fotonik; Electrical engineering; electronics and photonics; Elektroteknik; elektronik och fotonik; elektronik; Electronics;

   Sammanfattning : Recently, the enormous growth in personal communications systems (PCS), satellite communication and various other forms of wireless data communication has made analogue frequency control a key issue as the operation frequency increases to the low/medium GHz range. Surface acoustic wave (SAW) and bulk acoustic wave (BAW) electroacoustic devices are widely used today in a variety of applications both in consumer electronics as well as in specialized scientific and military equipment where frequency control is required. LÄS MER

3. 2. Electro-Acoustic and Electronic Applications Utilizing Thin Film Aluminium Nitride

   Författare :David Michael Martin; J. Olsson; I. Katardjiev; S. Gevorgian; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; AlN; FBAR; FPAR; CMP; SOI; Nickel Silicide; Wafer Bonding; Electronics; Elektronik; Elektronik; Electronics;

   Sammanfattning : In recent years there has been a huge increase in the growth of communication systems such as mobile phones, wireless local area networks (WLAN), satellite navigation and various other forms of wireless data communication that have made analogue frequency control a key issue. The increase in frequency spectrum crowding and the increase of frequency into microwave region, along with the need for minimisation and capacity improvement, has shown the need for the development of high performance, miniature, on-chip filters operating in the low to medium GHz frequency range. LÄS MER

4. 3. Advanced Thin Film Electroacoustic Devices

   Författare :Johan Bjurström; Ilia Katardjiev; Paul Muralt; Uppsala universitet; []
   Nyckelord :Technology; aluminum nitride; FBAR; shear mode resonator; lamb wave devices; liquid sensor; biosensor; temperature compensation; reactive sputtering; TEKNIKVETENSKAP; TECHNOLOGY; TEKNIKVETENSKAP;

   Sammanfattning : The explosive development of the telecom industry and in particular wireless and mobile communications in recent years has lead to a rapid development of new component and fabrication technologies to continually satisfy the mutually exclusive requirements for better performance and miniaturization on the one hand and low cost on the other. A fundamental element in radio communications is time and frequency control, which in turn is achieved by high performance electro-acoustic components made on piezoelectric single crystalline substrates. LÄS MER

5. 4. Thin Film Plate Acoustic Resonators for Frequency Control and Sensing Applications

   Författare :Lilia Arapan; Ventsislav Yantchev; Ilja Katardjiev; Enrique Iborra; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electro-Acoustics; FPAR; Lamb waves; aluminium nitride; interdigital transducer; phase noise; temperature compensation; power handling; sensitivity; zero group velocity; intermode coupling; Teknisk fysik med inriktning mot elektronik; Engineering Science with specialization in Electronics; Teknisk fysik med inriktning mot mikrosystemteknik; Engineering Science with specialization in Microsystems Technology;

   Sammanfattning : The recent development of the commercially viable thin film electro-acoustic technology has triggered a growing interest in the research of plate guided wave or Lamb wave components owing to their unique characteristics. In the present thesis i) an experimental study of the thin film plate resonators (FPAR) performance operating on the lowest symmetrical Lamb wave (S0) propagating in highly textured AlN membranes versus a variety of design parameters has been performed. LÄS MER