Izvedba harmonskega mešalnika za frekvenčno področje od 76 GHz do 81 GHz

ŠTUCIN, GAŠPER (author), Batagelj, Boštjan (mentor)

Glavni cilj te magistrske naloge je bila izdelava harmonskega mešalnika za področje od 76 GHz do 81 GHz z mikrotrakasto anteno (krpica). Na začetku opišem osnovne pojme pri mešalnikih. V naslednjih poglavjih obdelam teorijo frekvenčnega mešanja in množenja frekvenc z eno diodo in z antiparalelnim parom diod. Sledi poglavje o praktični izvedbi frekvenčnega mešalnika in potrojevalnika frekvence. Poglavje je razdeljeno na osnovno obravnavo sheme vezij, ki obdajajo diode, na učni primer frekvenčnega mešalnika in potrojevalnika frekvence na nižjih frekvencah, na zasnovo frekvenčnega mešalnika za področje od 76 GHz do 81 GHz ter zasnovo potrojevalnika frekvence na 33,9 GHz. Naslednje poglavje je namenjeno opisu končnega izdelka, tj. izdelavi in meritvam harmonskega mešalnika za področje od 76 GHz do 81 GHz z mikrotrakasto anteno (krpica). Na koncu je še opis zasnove, izdelave in meritve PLL sintetizatorja signala za lokalni oscilator za 33,9 GHz.

• Language: Slovenian
• Keywords: harmonski mešalnik, množilnik, potrojevalnik frekvence, antiparalelni par diod, Jacobi-Angerjev razvoj, avtomobilski radar, PLL, mikrotrakasta antena, krpica, krpičasta antena, mmWave, milimetrski valovi
• Work type: Master's thesis/paper
• Organization: FE - Faculty of Electrical Engineering
• Year: 2020
• PID: 20.500.12556/RUL-121495
• Publication date in RUL: 12.10.2020

Secondary language

• Language: English
• Title: Implementation of the harmonic mixer for the frequency range of 76 GHz to 81 GHz

Abstract

The main goal of this master's thesis was to make a harmonic mixer for frequencies between 76GHz and 81GHz with a microstrip patch antenna. Firstly, I describe the basic concepts of mixers. In following chapters, I discuss the theory of frequency mixing and frequency multiplication with a single diode and an antiparallel diode pair. Following that is a chapter on the practical implementation of frequency mixers and frequency multipliers. This chapter is divided into a basic explanation of schemes of circuits surrounding diodes, into a study of a learning example of frequency mixer and a frequency multiplier at lower frequencies, into frequency mixer design for frequencies from 76GHz to 81GHz and into a frequency multiplier design at 33.9GHz. Next chapter describes circuits and measurements of a harmonic mixer for frequencies between 76GHz and 81GHz with a microstrip patch antenna. At the end, there is a description of the design and measurement of a PLL signal synthesizer for the 33.9GHz local oscillator.

• Keywords: harmonic mixer, multiplier, antiparallel diode pair, Jacobi-Anger expansion, automotive radar, PLL, mikrostrip antenna, patch antenna, mmWave, millimetre wave