High Speed Digital Systems High Speed Digital Systems laboratory laboratory Midterm Presentation Spring 2009 Cellular Signal Source Student : Hammad Abed Essam Masarwi Instructor: Yossi Hipsh
Jan 12, 2016
High Speed Digital Systems High Speed Digital Systems laboratorylaboratory
Midterm PresentationSpring 2009
Cellular Signal Source
Student : Hammad Abed Essam Masarwi
Instructor: Yossi Hipsh
Project Description Project Description Designing Pulser which will illustrate
how the cellular works during receiving and transmitting sms message.
Pulser - will create a single / packet made of a short (0.5-1 nsec)/ long(10-13 nsec) pulse signal, with very low rise/fall time (200ps).
Block DiagramBlock Diagram
Splitter
MC100EP11
OSC
F=50MHz
AND
MC100EP05
MUX
NC7SV157 MUX ים בוחרים בין יציאת-
BNCהרכיב הקודם לבין כניסת
1 Shot
MC74LCX74
MUX
Delay ChipMC100EP19
5
SN74LVC1T45DBVR
Translater
MC100EPT20 Delay Chip
MC100EP195
MicrostriplineExternal controllers (Dip switches)
ECL technology
Signals waveformSignals waveform
After and operation~0.5nsec
Signal 1 after the translator and the delay
Signal 2 after the translator and the delay
Splitting the signal
Oscillator waveform
Vcc
Gnd
Level “1”
1-shot waveform
12ns
Level “0”
8ns
WIDE
SHOW THE SLOPES
OutputOutput
output
Q
Q#
DC hight
Output #
D-1318 PCB development D-1318 PCB development ::D-1318 Block diagram Electrical schemeTable of components and statusComponents places upon the
printed board
PCB stack upPCB stack up
FR4Insulator -
1 Oz = 0.035 m”m
1 Oz = 0.035 m”m
PCB thickness ~1.6m”m
Components & microstriplines
GND
Vtt = 1.33[Volt]
Vcc = 3.3 [Volt]
Signal control L1
Signal control L2
FR4
FR4
FR4
FR4
FR4
Parts ListParts ListName Component
codeStatus
1. Oscillator K1144ACE Valid
2. Mux NC7SV157 Valid
3. Dual supply bus SN74LVC1T45DBVR
Valid
4. 1-shot (Flip flops) MC74LCX74 Valid
5. Translator TTL to ECL MC100EPT20 Valid
6. Splitter MC100EP11 Valid
7. Programmable delay chip
MC100EP195 Valid
8. AND gate MC100EP05 Valid
9. SMA connectors - Valid
10.
Dip switch 4 switches 76RSB04ST Valid
11.
Dip switch 12 switches 76RSB12ST Valid
12.
Capacitors - Valid
13.
Resistors - Valid
Electrical schemeElectrical scheme
High speed Transmit ion High speed Transmit ion lineslines MC100EPT20 MC100EP11
1. pin 2 pin 72. pin 3 pin 6
MC100EP11 (1),(2) MC100EP1951. pin 1 pin 4 (1)2. pin 2 pin 5 (1)3. pin 3 pin 4 (2)4. pin 4 pin 5 (2)
MC100EP195 (1),(2) MC100EP051. pin 21 (1) pin 12. pin 20 (1) pin 2 3. pin 21 (2) pin 34. pin 20 (2) pin 4
MC100EP05 (OUTPUT) Pins : 6,7
Microstripline features (PCB Microstripline features (PCB editor) editor)
Microstripline
Metal 1
t
h
w
Z0 = impedance of free space.
dielectric constant of substrate.w = width of strip.h = thickness ('height') of substrate .t = thickness of strip metallization.
ReferencesReferencesWikipedia
http://en.wikipedia.org/wiki/Microstrip
Microwaves, K. C. Gupta, New age international p. 198-201 .