PLEASE NOTE: Calculations based on correlated vs uncorrelated levels yield very different results. If you see an unexpected result, please verify the uncorrelated/correlated setting of this app first !
This tools helps to add and subtract an arbitrary number of power levels expressed in units of dBm and watt.
This tools helps to add and subtract correlated and uncorrelated voltage levels.
This tool calculates for an entry using a unit such as dBm, dBW, mW, W, mV, V, dBV, dBµV and dBu the corresponding values for all other units, for individual impedance values.
It is as simple as inserting the decibel level in any of the text fields and click the plus button. Can be used indifferently either one.
With the delete button go blank fields.
Supports decimals and rounds the result to a decimal, which is ideal in this magnitude.
A proper database management tool is nothing without corresponding search, navigation and sorting tools. Memento Database has it all – and it even supports barcode scanning for searching the database!
As a mobile tool optimized for Android smartphones and tablets, Memento supports online synchronization via the Google Sheets application and allows you to edit your records on your PC.
The app can also be used as mobile forms for Google Sheets.
The program can be used literally by anyone: from cooking enthusiasts collecting recipes to field scientists on a mission. Lists of purchases or expenses, a collection of movies, tasks, fishing spots, your store inventory and pretty much anything else – all of this can be easily added to Memento Database and quickly found afterwards!
Memento allows you to establish a connection between various kinds of records.
For example, if you have a list of trips and a list of tourism equipment you can add any usable equipment to an entry on the trip list.
Add mobility to your IT infrastructure by integrating Memento Database.
Your employees will be able to manage any business data through their phones and tablets.
Common use cases for business: project management, customer relationship management (crm), inventory management, expenses and receipts, products management, sales management.
Our online catalog of library templates gives you an opportunity to familiarize yourself with a large number of ways to use Memento.
The catalog currently contains over 3,000 library templates.
Flexibility and diversity of the features make it possible to create an app that perfectly suits your taste.
* Storing entries with custom fields;
* Sorting, grouping and filtering entries by any fields;
* Memento can display your data in form of a list, table, on a map, and even in a calendar;
* Synchronization with Google Sheets;
* 19 types of fields: – text, integer, boolean, date/time, rating, currency, image, signature, file, audio, contact, calculation, Google Maps coordinate and others;
* Many-to-many relationship between entries;
* Importing and exporting CSV-files / Excel;
* Password protection (encrypt entries using AES-128);
* Charts: Pie, Line, Bar, Columns, Area, Scatter, Stepped Area;
* Mass calculations (aggregation): sum, maximum, minimum, average;
* Backing up and restoring data;
* Sending entries via SMS, e-mail, and other available services;
* Barcode scanner, creating entries with data and images retrieved from Amazon;
* Search entries in database by barcode.
* Any entry in Memento can be published and made available to your friends or worldwide;
* Online catalog of library templates. Over 3000 templates available;
* You can keeping track of everything.
Memento Database is a perfectly comprehensive personal database management solution for everyone.
Visit forum at http://mementodatabase.com
Like us on Facebook at http://www.facebook.com/mementodatabase
Follow us on Twitter at http://twitter.com/mementodatabase
Translation project is opened at http://translate.luckydroid.com
Anyone can start new translation or fix existing translation error.
Customers, Suppliers, Events, Friends, Notes, Products, Prices or any other data.
Create databases, tables, add, edit or delete records.
It hasn't got ads neither limitations.
It has calculated fields.
Generate PDF files from results.
Records can have files attached (PDF, images, audios or videos).
Supports large amounts of information.
Supports tables relationships and GPS fields.
Searches are easy and very fast. Can read and write barcode and QR codes.
Import CSV data from Access, MySQL, Excel, OpenOffice, or any other program that exports to this standard format. It also exports data in CSV format.
LIKE and Share us:
This lite version includes the following tools:
1) PI and T attenuator
2) Reflectometer (VSWR, Return loss)
3) Mismatch error limits (VSWR, Return loss)
4) Parallel LCR impedance/resonance
5) capacitor impedance
6) lowpass filter
7) Capacitor plate calculator
8) Power and Voltage Converter
9) Coupler directivity calculator.
Tools in full version includes;
1.Noise floor (Kelvin,dBm)
2.Amplifier cascade (NF, Gain, P1db, OIP2, OIP3)
3.Radar equation (2-way path loss)
4.Radio equation (1-way path loss)
5.Power and voltage converter (W,dBm,V,dBµV)
6.Field intensity and power density converter (W/m2, V/m, A/m, Tesla, Gauss,dBm, W)
7.Mismatch error limits (VSWR, Return loss)
8.Reflectometer (VSWR, Return loss)
10.Divider and Couplers (Wilkinson, Rat race, Branchline , microstrip and lumped)
11.Balanced and und balanced PI and T attenuator
12.Skin depth (DC and AC resistance)
13.PCB Trace calculator (impedance/dimensions)
- Coplanar waveguide
- Coupled microstrip
- Coupled stripline
14.Image rejection (amplitude and phase imbalance)
15.Mixer harmonics (up and down convertion)
17.Peak to RMS (peak, RMS, average, CF)
18.Air Core Inductor Inductance
19.Parallel plate Capacitor
20.PI and T attenuator
22.Parallel LCR impedance/resonance
23.Series LCR impedance/resonance
26.Antenna temperature (Kelvin)
27.Radar Cross Section (RCS) calculator (Sphere,Cylinder, flat plate, corners, dBsm)
28.Noise Figure Y-Factor Methode
29.EMC (EIRP, ERP, dBµV/m)
30.Noise figure converter (dB, linear, Kelvin)
31.Frequency Band Designations (IEEE Radar band, Military Radar band, Radio band, Satellite, Wavefuide band)
32.Resistor color code (reverse lookup, 3 to 6 band)
33.Filter Design (Butterworth, Chebyshev, prototype):
- Low pass
- High pass filter
- Band pass
- Band stop filter
34.µ-Filter Design (microstrip, stripline):
- Interchange of Circuits
- Kuroda's Identities
- Series and Shunt Circuit lines
- Coupled line Circuits
- Stepped Impedance
35) PCB Trace Width and Clearance Calculator
36) Series and Parallel component (R, L and C) calculations.
37) Reverse Series and Parallel resistor calculations.
38) Inductor Color Code Calculator.
39) Capacitor Charge Calculator.
40) Led Resistor Calculator.
41) Voltage Divider Calculator.
42) Thin Film Resistor Calculator (Trim and non Trim)
43) Opamp Calculator
44) Lumped Balun Calculator
45) Wavelength calculator
46) L-Network Matching Calculator
47) LCR Parallel - Series Conversion Calculator
48) PI & T-Network Matching Calculator
49) Coax Line Calculator
50) Twisted pair Calculator
51) Lumped-Distributed Equivalences calculator
52) Fresnel Calculator
53) Inductor Charge Calculator.
54) Heat Sink temperature calculator
55) Thermal via calculator
56) Coupler directivity calculator
57) Cavity resonance calculator
- convert wavelength to frequency;
- convert power levels –> W, dBm, dBW;
- synthesize capacitive and inductive transformers;
- visualize amplitude and angle modulated signals in time domain;
- make a fast estimation of quantities, such as skin depth, available noise power, bandwidth of CW modulated signals and many more.
The App also contains short summaries on RF and microwave circuits as well as a free book on RF circuit design with the following chapters:
- Passive RF circuits.
- Linear active two-ports.
- Noise and distortion.
- Power and nonlinear RF-Amplifiers.
- Mixers and detectors.
- Modulation, transmission, and demodulation.
The quizzes are included to test your knowledge of the topic.
The App will ask for Internet and Local storage access to download and store a book on RF circuit design in .pdf format.
The development of the App has been supported by the Technical University of Denmark (DTU), so NO adds or any other type of monetization is included.
Additionally the input power into a receiver with 50 Ohm input impedance is calculated from the gain of the receiving antenna.
The program automatically converts power flux density into electric and magnetic field strength.
Depending on the transmitted frequency, various parameters influence the received power and field strength, such as non-line-of-sight propagation, changes in polarisation, reflections, and multi-path propagation affect the true values. Additionally antenna VSWR and cable losses have to be considered.
The program Field Strength and Power Estimator does not consider these impairments. It assumes conditions, that are close to the best possible theoretical values. This is why we say the program is an Estimator, not a Calculator.
To start calculation, just select a row by touching it and change a specific value.
After touching the "Estimator" button in order to return to the main menu, the dependent values are calculated automatically.
The results are displayed with 3 decimal places only (except the antenna gain values, which are displayed with 1 decimal place).
If you change a unit, the corresponding numerical values are converted.
For example: 1 mW gives 0 dBm if the unit is changed from mW to dBm. Be careful not to change a zero linear value to dB.
It is also possible to enter the values with "m" for milli, "M" for mega, "u" for micro, etc.
When changing the values for Frequency, Antenna Gain Transmitter, Antenna Gain Receiver or Distance, all other values are recalculated using the set Transmitted Power.
When changing one of the other values however, Frequency, Antenna Gain Transmitter, Antenna Gain Receiver and Distance will keep their values (the "Persistant Data" values).
Be careful: If you enter a Distance value, which is smaller than 0.159 times the wavelength
( D < Lambda / (2*Pi) ), the distance field becomes yellow as a warning for leaving the far-field condition.
This application is based on the application note:
"1MA85: Field Strength and Power Estimator"
by Rohde & Schwarz GmbH & Co. KG
( http://www.rohde-schwarz.com/appnote/1MA85 )
Rohde & Schwarz GmbH & Co. KG Web Site >> Field Strength & Power Estimator Support
Mobi DB Inventory features:
• Add/edit categories;
• Add/edit items;
• Take photos or select from the gallery;
• Scan bar codes and add to the items description;
• Sort and filter items in the list;
• Search for necessary entries by entering a keyword or a bar code;
• Save database to SD;
Catalog and manage your stock in a convenient manner with Mobi DB Inventory!
There are 32 engineering calculators in this single app, including:
Regulator Current Limiting Resistor Calculator
Capacitance Time Constant Calculator
Four-Color-Band Resistor Calculator
Five-Color-Ring Resistor Calculator
Transistor Switch Saturation Calculator
Wheatstone Bridge Calculator
Constant Current Source Calculator
Inductance and Capacitance Calculator
Ohm’s Law Calculator
FET Buffer Calculator
DC/DC Circuit Calculator
Series Capacitance Calculator
Voltage Divider Resistance Calculator
Parallel Resistance Calculator
Speaker Crossover Calculators
Differential Amplifier Calculator
Hysteresis Comparator Calculator
Op-Amp Low-Pass Butterworth Filter Calculator
Bandpass Filter Design Calculator
Op-Amp High-Pass Butterworth Filter Calculator
RC Filter Cutoff Frequency Calculator
W, dBW, and dBm Conversion Calculator
V, dBV, and dBμV Conversion Calculator
dBμV and dBm Conversion Calculator
Temperature Conversion Calculator
Cube Root Calculator
Aluminum Electrolytic Capacitor Life Calculator
Film Capacitor Life Calculator
Ceramic Capacitor Life Calculator
J-Type Transmitting Antenna Size Calculator
Flat-Plate Capacitance Calculator
The app’s intuitive user interface allows easy insertion of units for quick solutions of even the most complex calculations.
The units of measure that these engineering calculators cover include pressure, mass, time, area, angle, length, force, volume, energy, power, temperature, and more. Simply input the value into the appropriate unit and see conversion once the calculation is complete — no need to switch or otherwise adjust units in order for these engineering calculators to function.