Curs 1 2018/2019 - rf-opto.etti.tuiasi.rorf-opto.etti.tuiasi.ro/docs/files/DCMR Curs 1_2018.pdf ·...
Transcript of Curs 1 2018/2019 - rf-opto.etti.tuiasi.rorf-opto.etti.tuiasi.ro/docs/files/DCMR Curs 1_2018.pdf ·...
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Curs 1 2018/2019
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2C/1L, DCMR (CDM) Minim 7 prezente (curs+laborator) Curs - conf. Radu Damian Vineri 11-13, P7
E – 50% din nota
probleme + (2p prez. curs) + (3 teste) + (bonus activitate) ▪ 3pz=+0.5p
toate materialele permise Laborator – conf. Radu Damian Joi 8-14 impar II.13
L – 25% din nota
P – 25% din nota
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http://rf-opto.etti.tuiasi.ro
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RF-OPTO
http://rf-opto.etti.tuiasi.ro
Fotografie
de trimis prin email: [email protected]
necesara la laborator/curs
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Personalizat
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“Universitatea nu e pentru mase locul de unde emana cunoasterea, ci un obstacol intre individ si diploma pe care i-a harazit-o destinul”
“Universitatea fiind ceva care se interpune in mod imoral intre individ si dreptul lui natural de a fi diplomat, individul are obligatia morala sa triumfe asupra universitatii prin orice mijloace” Sursa citat: Internet, user: ”un student batran si
plesuv”
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subiecte individuale Note 2006: 7.43 2007: 7.23 2008: 7.98 2008: 6.42 2009: 7.14 2010: 6.34 2011: 7.79 2012: 7.77
La prima aplicare (neanuntata) 50% din studenti au parasit examenul in primele 10 minute 50% din cei ramasi nu au promovat promovabilitate totala 25%, rata contestatiilor: 0%
Urmatoarele examinari (anuntate) rata contestatiilor: 0%
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2017/2018
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2017/2018
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Prezenta Minim 7 prezente Bonus Teme proiect etc.
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Angajare temporara disponibila Salarizare lunara echivalenta 12800 lei/luna
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Extrase din evaluările calitative ale studenţilor (2017):
“70% dintre studenti au platit un student de an mai mare sa le faca proiectul, intre 30 si 50 de lei”
Calcul leileistud 140040%7050
hstud 5.17min30%7050
hhzilesaptluna 1608541
luna
lei
h
lei
h
lei
1
12800
160
12800
5.17
1400
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factorul “andrei”
2015/6 2016/7
2017/8
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Diferenţa între:
un hoţ harnic
un hoţ leneș
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Hoţul harnic se duce la magazin, cumpăra o rangă, după care se duce personal la locaţia “crimei” și comite spargerea
Hoţul leneș își achită ranga prin Internet Banking, și se așteaptă ca proprietarul magazinului de scule să ia ranga, să comită spargerea, să vândă prada și să îi vireze banii in cont
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Diferenţa între:
un hoţ harnic : factorul “andrei” = +1p
un hoţ leneș : factorul “andrei” = -1p
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factorul “andrei” = -2p
2017/8
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Sinapse “inginerești”
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Linii de transmisie Adaptarea de impedanţa Cuploare direcţionale Divizoare de putere Amplificatoare de microunde Filtre de microunde Oscilatoare de microunde ?
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http://rf-opto.etti.tuiasi.ro Irinel Casian-Botez: "Microunde vol. 1:
Proiectarea de circuit", Ed. TEHNOPRES, 2008
David Pozar, Microwave Engineering, Wiley; 4th edition , 2011, ISBN : 978-1-118-29813-8 (E), ISBN : 978-0-470-63155-3 (P)
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> 2010 < 1950
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HP
Agilent
Agilent
Keysight Agilent
Avago
HP
1999
2014
2005
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0 dBm = 1 mW 3 dBm = 2 mW 5 dBm = 3 mW 10 dBm = 10 mW 20 dBm = 100 mW -3 dBm = 0.5 mW -10 dBm = 100 W -30 dBm = 1 W -60 dBm = 1 nW
0 dB = 1 + 0.1 dB = 1.023 (+2.3%) + 3 dB = 2 + 5 dB = 3 + 10 dB = 10 -3 dB = 0.5 -10 dB = 0.1 -20 dB = 0.01 -30 dB = 0.001
dB = 10 • log10 (P2 / P1) dBm = 10 • log10 (P / 1 mW)
[dBm] + [dB] = [dBm]
[dBm/Hz] + [dB] = [dBm/Hz]
[x] + [dB] = [x]
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Operatii cu numere complexe! z = a + j · b ; j2 = -1
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abscisa – partea reala ordonata – partea imaginara oricare poate fi negativa, intregul plan, 4
cadrane
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Adunare
Scadere
Inmultire
Impartire
dbjcadjcbjawz
dbjcadjcbjawz
dacbjdbcadjcbjawz
2222/
dc
dacbj
dc
dbca
djcdjc
djcbja
djc
bjawz
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z
z* Simetric fata de axa reala
bjaz
bjaz *
*
2
1Re zzaz
zzj
zzj
bz
**
22
1Im
***wzwz
***wzwz
***wzwz
***// wzwz
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Reprezentare polara
modul
faza sincos jzbjaz
0,2
,2
0,0,arctan
0,0,arctan
0,arctan
arg
anedefinit
baa
b
baa
b
aa
b
z
22 baz
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Formula lui Euler
Reprezentare polara jezbjaz
Rxxjxe xj ;sincos
sincos jzbjaz
njnzezezznnjnnjn sincos
2sin
2cos22
1
jzezezzj
j
sincos jwzewzewezwz jjj
sincos jw
ze
w
zee
w
z
ew
ezwz jjj
j
j
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Reprezentare polara 22 baz
1sincossincos 22 xxxjxe xj
Rxe xj ;1
*2zzz
j
j
ezjz
jzjzezz
sincos
sincossincos***
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unitate de masura standard – radiani unitate de masura traditionala in microunde –
grade format zecimal (55.89°)
rad 180
180
rad
0,2
,2
0,0,arctan
0,0,arctan
0,arctan
arg
anedefinit
baa
b
baa
b
aa
b
z
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Atentie la reprezentarea unghiurilor!!
programele matematice – lucreaza standard in radiani
▪ e necesara o conversie inainte si una dupa aplicarea unei functii trigonometrice
calculatoarele (stiintifice) au posibilitatea (de obicei) de a stabili unitatea de masura pentru unghiuri
▪ e necesara verificarea unitatii de masura curente
rad 180
180
rad
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tipic
f ≈ 1÷3GHz – 300GHz
λ ≈ 1mm – 10cm
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Lungimea electrica a unui circuit l – lungimea fizica
E = β·l – lungimea electrica
Dependenta castigul antenei
imaginea unui obiect pe radar
lllE 2
2
rflc
lE
0
2
V, I variabile ~ inutile
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Comportarea (descrierea) unui circuit depinde de lungimea sa electrica la frecventele de interes E≈0 Kirchhoff
E>0 propagare
lllE 2
2
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Laboratorul de microunde si optoelectronica http://rf-opto.etti.tuiasi.ro [email protected]