WikiSysop: Created page with "This is a list of all planned or ongoing projects. ==Senior Project/Masters Thesis Ideas== *rev0Trac u+ (Senior) [See: Senior_Project] **Add UHF transmitter to rev0Trac..."

2015-08-08T01:55:39Z

Created page with "This is a list of all planned or ongoing projects. ==Senior Project/Masters Thesis Ideas== *rev0Trac u+ (Senior) [See: Senior_Project] **Add UHF transmitter to rev0Trac..."

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This is a list of all planned or ongoing projects.

==Senior Project/Masters Thesis Ideas==

*rev0Trac u+ (Senior) [See: [[Senior_Project]]]
**Add UHF transmitter to rev0Trac
**Theory proven using TDA7100 UHF transmitter IC to generate 1kHz FM tone at 5kHz deviation on 433.92MHz
**Direct FM generation via FM'ing reference frequency (generated by DDS and filtered) at deviation/PLL mult.
**Use UHF transmitter IC as low-cost PLL block + PA
**All blocks individually proven, need to find UHF transmitter IC that is receptive to external clock (as opposed to crystal)

*Pulse characterization of test equipment (Masters)
**Using a high speed pulse to measure and compensate for the response of test equipment, to better represent the actual signal.
**Found idea previously online, can't remember link.

*<s>Software Defined Radio (Senior)</s>
**Start next quarter in CPE329 with DDS into RF mixer for near-direct synthesis of RF.
**Step 1: VCO
**Step 2: PLL
**Step 3: PLL from divided frequency/digital ref.
**Step 4: Mixer
**Step 1*: DDS/Characterization + Filtering
**Step 5: Generating RF
**Step 6: Filters
**Step 7: Amplifier + Antenna/Matching
**Step 8: Software for generation of various communication protocols
**'''Short form steps (in case of time limitations):'''
**Step 1: Talk to DDS
**Step 2: Filter if necessary
**Step 3: Software generation of communication protocols, aim for AM/AM Band communication
**Step 4: Amplifier + Antenna/Matching if necessary
**'''Status:''' DDS received, found to be poor reference due to many undesirable harmonics and lower frequency components

*SDR+ (Senior/Masters)
**Spectrum analyzer to find desired communications
**Smart decoding of any common protocol, or identification if decoding not possible
**Real time view of digital data, logging, or analog/sound output/sampling + storage for voice
**Transmitting on same protocol

*RF Playground (Senior/Masters)
**See Agilent Genesys/Spectrasys: RF System Design Software
**Using known properties of mixers, amplifiers, filters, etc., determine system output spectra and performance given inputs, component properties (e.g. IIP3/OIP3, NF, Gain)
**GUI with drag/drop schematic-like design flow
**View signal power and spectra at any point in the system

==Planned Projects==

*DTMF Hand Mic
**A DTMF tone generator with speaker and microphone for use with radios that do not directly support DTMF
**Driven by an R-2R DAC and microcontroller outputting the addition of two samples of a sine LUT, whose indicies are controlled by interrupts of differing frequency
**Uses an MSP430 MCU, op amp(s), powered by DC bias from speaker output or internal 3V battery
**Case either custom or modification of COTS handmic with keypad (likely easier/cheaper)
**'''Current status:''' Have basic plan as outlined above, can breadboard test within a couple hours of setup/programming

*Alarm Clock++
**Alarm clock with reliable operation, multiple settable alarms for any day of the week
**Clear alarm armed indicator
**Multiple sound modes, vibrate
**Link to accelerometer attached to thigh for disabling only when you've actually gotten out of bed
**'''Current status:''' Have essential parts + plan

*Wall LED Clock
**Large digit LED clock with multiple colors/brightness for different times of day
**'''Current stauts:''' Have parts + plan

*RainbowLaser
**An RGV laser with ability to control from a computer interface/program
**'''Current status:''' R+G+V aligned and installed, PCB design needed, circuit already known

*Predictive Sensor
**E.g. thermometer that predicts correct temp within a short period of time without warming up/cooling down fully based on change in temp readings.
**'''Current status:''' Crazy idea

*2.4GHz Spectrum Analyzer/Downconverter/Tracking Generator
**Simple form:
***BPF for 2.45GHz ISM Band, Bandwidth 800MHz
***0-40dB Attenuator
***Selectable LNA
***Mix input of 2.05-2.85GHz to 30-830MHz using double balanced mixer and 2.02GHz fixed LO (generated by ADF4350 or similar)
***Output viewed directly on 10-1000MHz spectrum analyzer (ISM Band of 2.4-2.5GHz mixed to 380 to 480MHz, viewable on IM-ME spectrum analyzer)
**Full form: (Needs redesign; LO overlaps with RF input, cannot be used to produce tracking output)
***LO sweeps from 2.25-3.05GHz, 3dB split, yielding fixed 200MHz IF
***3dB split LO mixes with 200MHz ... (see above problems)
***200MHz BPF, Bandwidth ~5MHz
***Mix input of 200MHz to 10.7MHz using double balanced mixer and 189.3MHz fixed LO
***Selectable IF BW (1M, 300k, 30k, 3k, 300)
***Log amplifier (e.g. AD3810)
***16-24bit ADC to (USB enabled) MCU, display on (computer or) LCD
**'''Current status:''' Planning/requirements stage, ADF4350 (PLL/VCO), AD8310 (Log amp), ADL5801 (Dbl. Bal. Mix) samples ordered, ADF4350 Built + Tested (phase noise too high for low noise spec. an.), BGA2022 based Mixer + RF2373 Amp Board designed + built + tested (works with IM-ME to view ISM 2.4-2.5GHz spectrum).

Planned Projects - Revision history

WikiSysop: Created page with "This is a list of all planned or ongoing projects. ==Senior Project/Masters Thesis Ideas== *rev0Trac u+ (Senior) [See: Senior_Project] **Add UHF transmitter to rev0Trac..."