From f323ed116662677323b15ee471e65eea02137c07 Mon Sep 17 00:00:00 2001 From: shwetha729 Date: Fri, 27 Oct 2023 18:20:48 -0400 Subject: [PATCH] Updated: Friday, October 27,2023-10-27 18:20:45 --- .../plugins/recent-files-obsidian/data.json | 8 +- enter/.obsidian/workspace.json | 37 +- enter/Radio.md | 386 ++++++++++++++++++ 3 files changed, 419 insertions(+), 12 deletions(-) create mode 100644 enter/Radio.md diff --git a/enter/.obsidian/plugins/recent-files-obsidian/data.json b/enter/.obsidian/plugins/recent-files-obsidian/data.json index 40d5e67..a780a44 100644 --- a/enter/.obsidian/plugins/recent-files-obsidian/data.json +++ b/enter/.obsidian/plugins/recent-files-obsidian/data.json @@ -1,5 +1,9 @@ { "recentFiles": [ + { + "basename": "Radio", + "path": "Radio.md" + }, { "basename": "QCE DAY 1", "path": "Machine Tips (Quantum)/Project Vault/QCE 2023/QCE DAY 1.md" @@ -195,10 +199,6 @@ { "basename": "Notable Obsidians", "path": "Coding Tips (Classical)/Project Vault/About Obsidian/Obsidian Guides/Notable Obsidians.md" - }, - { - "basename": "Encrypting Obsidian", - "path": "Coding Tips (Classical)/Project Vault/About Obsidian/Obsidian Guides/Encrypting Obsidian.md" } ], "omittedPaths": [], diff --git a/enter/.obsidian/workspace.json b/enter/.obsidian/workspace.json index 8737418..1e92095 100644 --- a/enter/.obsidian/workspace.json +++ b/enter/.obsidian/workspace.json @@ -30,9 +30,29 @@ "source": false } } + }, + { + "id": "839e76dbed47d107", + "type": "leaf", + "state": { + "type": "empty", + "state": {} + } + }, + { + "id": "8e9d3d68e001a832", + "type": "leaf", + "state": { + "type": "markdown", + "state": { + "file": "Radio.md", + "mode": "source", + "source": false + } + } } ], - "currentTab": 1 + "currentTab": 3 } ], "direction": "vertical" @@ -91,7 +111,8 @@ } ], "direction": "horizontal", - "width": 200 + "width": 200, + "collapsed": true }, "right": { "id": "4bd9c02fbfe6785f", @@ -107,7 +128,7 @@ "state": { "type": "backlink", "state": { - "file": "Machine Tips (Quantum)/Project Vault/QCE 2023/QCE DAY 1.md", + "file": "Radio.md", "collapseAll": false, "extraContext": false, "sortOrder": "alphabetical", @@ -124,7 +145,7 @@ "state": { "type": "outgoing-link", "state": { - "file": "Machine Tips (Quantum)/Project Vault/QCE 2023/QCE DAY 1.md", + "file": "Radio.md", "linksCollapsed": false, "unlinkedCollapsed": true } @@ -147,7 +168,7 @@ "state": { "type": "outline", "state": { - "file": "Machine Tips (Quantum)/Project Vault/QCE 2023/QCE DAY 1.md" + "file": "Radio.md" } } } @@ -174,11 +195,12 @@ "obsidian-excalidraw-plugin:Create new drawing": false } }, - "active": "1a5b6e3639875780", + "active": "dbad7b010371d947", "lastOpenFiles": [ + "Radio.md", + "Machine Tips (Quantum)/Project Vault/QCE 2023/QCE DAY 1.md", "Machine Tips (Quantum)/Project Vault/QCE 2023/QCE DAY 2.md", "Machine Tips (Quantum)/Project Vault/QCE 2023/QCE DAY 3.md", - "Machine Tips (Quantum)/Project Vault/QCE 2023/QCE DAY 1.md", "Machine Tips (Quantum)/Project Vault/Constructions/Making Machines.md", "Machine Tips (Quantum)/Physics/Anti Charm Meson.md", "Machine Tips (Quantum)/Physics/Ions.md", @@ -206,7 +228,6 @@ "Machine Tips (Quantum)/Resources/Quantum 101 - Alt. Resources.md", "Machine Tips (Quantum)/Project Vault/QRG/more-qrg/The Quantum Research Group.md", "Machine Tips (Quantum)/Quantum spaces.canvas", - "Machine Tips (Quantum)/Project Vault/QP 2023/Quantum Programming Qudits.md", "Coding Tips (Classical)/Project Vault/About Obsidian/Slides & Tools/export/Slides/Pasted image 20231010141612.png", "Coding Tips (Classical)/Project Vault/About Obsidian/Slides & Tools", "Untitled.canvas", diff --git a/enter/Radio.md b/enter/Radio.md new file mode 100644 index 0000000..b2d6fac --- /dev/null +++ b/enter/Radio.md @@ -0,0 +1,386 @@ + +Rhode and Schwarz Presentations  + + + +Presentation 1: James  + +- EmC presentations - gtime FFT  + + +- Emissions  + + +Summary:  + +- Compliance testing is required for most electrical devices  + + +- Failure rate in full compliance is quite  high  + +- Redesign + retest is retired  + + +- Precompliance testing is very important  + + + + +Questions:  + +- Anyone melted a probe? (people have definitely melted antennas)  + + + + + +--- + + + + +Signal Generators  + + + + +Topics:  + +- Primary purpose of signal generators  + +- Produces electrical wave forms of various a mplitudes, frequency and phase properties  + + +- Signal sinusoidal (CW - Continuous wave, SMW-2WA - the “flagship” Signal Generator)  + + + + +Why are they important?  + +- They provide close to ideal input signals to the device under test (DUE_  + +- They emulate real-worls signals in the case of complex - moulations 5G, LTE, Wifi  + + +- Good performance ois important to minimize generators  + + + + + +Signal Generators → 1. Analog Generators 2. Digital Generators  + +Analog Signal Generators  + +- Frequency, basic modulation, boise and spectral p + +- Major reason for switching to analog  + + + + +Veector Signal Generators  + +- Frequency and level range  + +- Noise and spectral purity → modulation BW + capabilities  + + + + +Analog  + + + +(insert image here)  + + + + +Vector  + + + +(insert image here)   + + + +What do we need an analog generator for  + +- High quality singals  + +- Reference code  + +- Gain  + +- Component development / testing (ADCD_  + +- Receiver testing  + +- Military / radar applications  + + + + + + +AM  Frequency modulation    FM frequency modulation Phase freqeuncy modulation  + + + + +Analog Generator Selection Criterai -- things to consider  + + + +Primary:  + +- Frequency range  + +- Phase-noise  + +- Harmonics  + +- Output power  + + + + +Secondaru  + +- Switching speeds  + +- Frequency + amplitude accuracy  + +- Very bad modulation support  + + +- Very important to understand your input signals  + + + + + +Vector Signal Generator Applciations  + +- Receiver testing - a huge applications  + +- Impairment generation  + +- Impulse testing  + +- Fading capbiliites, ability to generate attenuated delayed signals  + +- Radar echo preparations (GNSS) + +- Multipath signal generators + + + + + +Vecotr Signal Basics:  + +- Analog signals defined by magnitude  + +- Vector signals defined by: magnitude + phase  + + +- Used in digita modulation  + + +- LTE, SGNR, Wifi, Bluetooth, SatCOM  + + + + +ASK, PSK, FSK  + + + +Generating IQ Values  + +- Start with Symbol that represents particular magnitude _ phase  + +- Magnitude + phase can be converted into can be converted into  + + +- In-phase (“real”)  + +- Quadratic (“imaginary”)  + + +- Simplifies the pair of IQ vzlaues  + + + + +IQ Modulatior  + +- Converts base band (transmitting) signals into RF Signals  + +- This allows the AM FM PM to sum the signals  + + + + + +IQ Modulation Steps   + +- Many licensing keys that you buy/input  + +- ca n bring data in digitally (bring the IQ values in digitally) - various  ways to define the baseband  + +- Can have a file of IQ values  + +- Specific data that has been mapped to IQ values  + + +- Appropriate IQ values are generated based on what you selected  + +- Seiteis fo steps involved in creating a vector modulated signal  + +- Basic Digital Modulation - each variations of a signal magnitude _ phase represent a unique symbol  + + +- + + + + + +Each symbol  represents a specific  digital bit or combination of  bits  -  + +ASL - Amplitude  of  100%  and 50%  + +BPSK - phase 0 degrees and 180 degrees  + + + + + +Constellations (Symbol Mapping)  + +- Constellations - collection of symbols on a polar chart representing a signal and magnitude and phase  + +- X - acist depicting amplitude (I )  + +- Y -  as  depicting phase (Q)  + +- ASK depicts 2 symbols with 1 bit of info - modulating in amplitude  + + +- BPSK chart depicts 2 symbols molulating only in phase  + + + + + +How do we add more bits/symbols/information for faster data transmission?  + +- Through QAM symbol mapping  + +- Could transmit only 1 bit previously can transmit 4 bits now!  + +- These mits make up the frame of  our wifi, transmission, bluetooth, etc..  + + + + + + + +Modulation Bandwidth  + +- Some LTE at least 10 MHz of bandwidth requires  +- Frequency - generators RF frequency , usually the carrier signal  +- Bandwidth  +- ** important tto distinguish what the signal rate is and what the bit-rate is ** +- Flatness is the gain variation of the  platform  + + + + +Impairment Generation  + +- Another huge reason for vector  +- previously  talked about band base generation  +- Able to do fading and noise injection  + + +(include image here)  + + + + +- impairment s emulate real-world effects  +- Keeps up with standards as well  +- Base band impairments - noise - SW interferes - impulse noise - phase noice -  +- Fading - ability t o generate copies of a signal , attenuate them, or dopplegang them  + + + + + +AWFN impairments  + +- Additive white gaissian noise additive - +- Additive Combine dwith useful  +- White: noise constant other frequency  +- Gaussian - describes how noise changes over time ODFM (orthogonal)  +- 23 ASK Constellations   ODFM orthogonal   +- Considered more immune than QM  +- Device under test → mini circuits amplification  + + + +AWGN Generation  + +- Constellation drawn by the analyzer  + +- Analyzer (receiver basically) no trouble achieving  + +- Signal to rnoise ratio - APSK (PVB -52, Digital Viceo Broad cast  + +- This  is  very important for devices that  are  re-timing the circuit  + +- Needs to be able to filter out the (phase) noise that you inject  + + + + + +Phase noise impairment: + +- Anything coming up in time domain (called jitter)  + +- Anything long0term in time domain (called wonder)  + +- Excessive phase noise can cause many issues  + +- Disturbance  in communication systems for instance + +- Phase noise can be addes to base bands signal by  + +- Define amount of phase noise at gain  - frequency offsets  + +- Adding phase noise to signal leads to rotation + +- Errors → adjacent signal  /  symbols  bleeding into other symbols - bit-error  + + + + +Impulse Noise impairment - many real wprld examples of impulse noise impairment  + +- unintentional - spark plugs motors,  + +- Intentional - radars, or bursty , modulation time  + + + + + + +Fading:** \ No newline at end of file