The Ph.D. thesis describes the simulations of different microwave links from the
transmitter to the receiver intermediate-frequency ports, by means of a rigorous circuit-level
nonlinear analysis approach coupled with the electromagnetic characterization of the transmitter
and receiver front ends. This includes a full electromagnetic computation of the radiated far field
which is used to establish the connection between transmitter and receiver. Digitally modulated
radio-frequency drive is treated by a modulation-oriented harmonic-balance method based on
Krylov-subspace model-order reduction to allow the handling of large-size front ends.
Different examples of links have been presented: an End-to-End link simulated by making
use of an artificial neural network model; the latter allows a fast computation of the link itself when
driven by long sequences of the order of millions of samples. In this way a meaningful evaluation of
such link performance aspects as the bit error rate becomes possible at the circuit level.
Subsequently, a work focused on the co-simulation an entire link including a realistic simulation of
the radio channel has been presented. The channel has been characterized by means of a
deterministic approach, such as Ray Tracing technique. Then, a 2x2 multiple-input multiple-output
antenna link has been simulated; in this work near-field and far-field coupling between radiating
elements, as well as the environment factors, has been rigorously taken into account. Finally,
within the scope to simulate an entire ultra-wideband link, the transmitting side of an ultrawideband
link has been designed, and an interesting Front-End co-design technique application has
been setup.
| Identifer | oai:union.ndltd.org:unibo.it/oai:amsdottorato.cib.unibo.it:935 |
| Date | 06 May 2008 |
| Creators | Spadoni, Paolo <1980> |
| Contributors | Rizzoli, Vittorio |
| Publisher | Alma Mater Studiorum - Università di Bologna |
| Source Sets | Università di Bologna |
| Language | English |
| Detected Language | English |
| Type | Doctoral Thesis, PeerReviewed |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
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