haku: @instructor Stadius, Kari / yhteensä: 18
viite: 5 / 18
Tekijä: | Bahrampoor, Saman |
Työn nimi: | Monolithic Transformers for RF Electronics |
Julkaisutyyppi: | Diplomityö |
Julkaisuvuosi: | 2014 |
Sivut: | 52 s. + liitt. 9 Kieli: eng |
Koulu/Laitos/Osasto: | Sähkötekniikan korkeakoulu |
Oppiaine: | Micro and Nanotechnology (S3010) |
Valvoja: | Ryynänen, Jussi |
Ohjaaja: | Stadius, Kari |
Elektroninen julkaisu: | http://urn.fi/URN:NBN:fi:aalto-201502191895 |
OEVS: | Sähköinen arkistokappale on luettavissa Aalto Thesis Databasen kautta.
Ohje Digitaalisten opinnäytteiden lukeminen Aalto-yliopiston Harald Herlin -oppimiskeskuksen suljetussa verkossaOppimiskeskuksen suljetussa verkossa voi lukea sellaisia digitaalisia ja digitoituja opinnäytteitä, joille ei ole saatu julkaisulupaa avoimessa verkossa. Oppimiskeskuksen yhteystiedot ja aukioloajat: https://learningcentre.aalto.fi/fi/harald-herlin-oppimiskeskus/ Opinnäytteitä voi lukea Oppimiskeskuksen asiakaskoneilla, joita löytyy kaikista kerroksista.
Kirjautuminen asiakaskoneille
Opinnäytteen avaaminen
Opinnäytteen lukeminen
Opinnäytteen tulostus
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Sijainti: | P1 Ark Aalto 2647 | Arkisto |
Avainsanat: | monolithic transformers on-chip transformers on-chip inductors electro magnetic field simulation AEL |
Tiivistelmä (eng): | In this thesis transformers for RF integrated circuits are investigated. Monolithic transformers are widely used in various RF and high frequency circuits. For instance, transformers are used as power combiners in power amplifiers, in small signal amplifiers they are used for advanced feedback arrangements, they enable integrated filter implementation, they are used as baluns and impedance matching networks, and they can be used as resonators in oscillators. Unfortunately foundry supported models for on-chip transformers are rarely available and circuit designers need to design and characterize their own transformers using electro magnetic (EM) field simulator. This is a time consuming and laborious task, yet rigorous optimization of transformer characteristics results in significant improvements. Therefore one of the aims of this thesis was to develop an automated EM simulator environment. The thesis starts with representation of transformer basics and then different types of structures for such devices are introduced and discussed. One structure called "Interleaved Transformer" is chosen to be the basis of the design for its good magnetic coupling, symmetry, high frequency range and need of only two layers. More than 50 samples of these devices are designed and characterized. This is done with the help of an automated layout drawing program that was developed in this thesis. Afterwards, they are compared to illustrate how changing the dimensions can help us achieve desired properties. From these comparisons we have generated guidelines on how to for instance maximize quality factor, band width, or coupling coefficient. Based on these findings we can conclude what dimensional properties are needed for a specific circuit requirement and finally find out how to choose correct transformer dimensions for given applications. |
ED: | 2015-03-08 |
INSSI tietueen numero: 50635
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