Antenna tuning pdf file

Antenna tuning pdf file

Source : http://www.educypedia.be/electronics/antennawifi.htm

Antennas & Transmission Lines

Antennas & Transmission Lines omnidirectional antenna, biquad antenna, cantenne, horn antenna, Yagi Antenna, pdf file

Source : http://www.educypedia.be/electronics/antennawifi.htm

Antennas for 2.4 GHz WiFi

Antennas for 2.4 GHz WiFi wide angle antenna for 2.4 GHz WiFi, sector antenna for 2.4 GHz WiFi, Modified 3D Corner Reflector Feed for SAT TV offset parabolic dish, 2 el. BiQuad Feed for Offset Dish at 2.4 GHz WiFi, ...

Link : Antennas for 2.4 GHz WiFi

Antennetechniek voor WISPs

Antennetechniek voor WISPs biquad, cantenne, Biloop antenne

Source : http://www.educypedia.be/electronics/antennawifi.htm

Antenna construction

Antenna construction Quarter wave omnidirectional antenna for 2.4 GHz, omnidirectional antenna, Omnidirectional collinear antenna for 2.4 GHz, Biquad antenna for 2.4 GHz, Biquad antenna as a 2.4 GHz feeder for a Parabolic Dish, Can antenna for 2.4 GHz, pdf file

Source : http://www.educypedia.be/electronics/antennawifi.htm

Antenna Basics

Antenna Basics 1/4 Wavelength Ground Plane, Yagi antenna, horn antenna, Parabolic Dish, focus f = D²/16.c ; D= diameter of the parabola, c is depth of the parabola, BiQuad antenna, pdf file

Source : http://www.educypedia.be/electronics/antennawifi.htm

802.11 Wireless LAN Cards

802.11 Wireless LAN Cards schematics

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2.4 GHz WLAN Radio Interface

2.4 GHz WLAN Radio Interface IEEE 802.11b radio interface, Radio signal propagation at 2.4 GHz, Link budget calculations, pdf file

Source : http://www.educypedia.be/electronics/antennawifi.htm

2.45 GHz power amplifier with the BFG480W

2.45 GHz power amplifier with the BFG480W At a frequency of 2.45 GHz, a supply voltage of 3.0 V, and a control voltage of 3.0 V, the amplifier delivers an output power of 19 dBm at an input power of 8 dBm, with a power added efficiency of 38 %, pdf file

Source : http://www.educypedia.be/electronics/antennawifi.htm

2.4 GHz low noise amplifier with the BFG480W

2.4 GHz low noise amplifier with the BFG480W This application note gives an example of a 2.4 GHz LNA with the BFG480W. Because this LNA design has a high third order intercept value of 17 dBm (measured at input), it can be used for Wireless Local Area Network (WLAN) front-end and Wireless Local Loop (WLL) applications, pdf file

Soruce : http://www.educypedia.be/electronics/antennawifi.htm

2.4GHz AntennaAlignement

2.4GHz AntennaAlignement This paper attempts to provide some insight into the nature of radio propagation in that part of the spectrum (upper VHF to microwave) used by experimenters for high-speed digital transmission. It begins with the basics of free space path loss calculations, and then considers the effects of refraction, diffraction and reflections on the path loss of Line of Sight (LOS) links

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22.5dBm 2.4GHz Linear Power Amplifier for 802.11b WLAN Applications

22.5dBm 2.4GHz Linear Power Amplifier for 802.11b WLAN Applications provides a flat gain response over the entire 2.4GHz to 2.5GHz ISM band, industrial, scientific and medical radio bands

How to buy Motorola Talkabout T9500 2-Way Radio

The Motorola® I9550 Camo 25 Mile two-way radio is ready for your long distance communication needs. The unit is iVOX enabled for easy to use, hands-free communication without the need for an audio accessory. The NOAA Weather Alert Radio provides you...

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Morse Code Practice Oscillator

This simple code practice oscillator project for beginners to Continuous Wave Morse Code uses a 555 timer to generate a dit or dah sound when the key is pressed.

Good Link
More circuit by IC 555
More about Oscillator Generator
More about Squarewave Oscillator circuit



Read link : http://www.electronics-project-design.com/CodePracticeOscillator.html

Ham Radio Circuit - Morse Code Filter Project

This project will help to filter out the interference signal and ensure that the signal received from the Morse code station stand out.

Read more : http://www.electronics-project-design.com/HamRadioCircuit.html

USB Battery Charger Circuit

This application circuit uses the MCP73853/MCP73855 linear charge management controllers for cost sensitive applications. They are specially designed for USB applications and adhere to all the USB specifications governing the USB power bus.

Read more : http://www.electronics-project-design.com/BatteryChargerCircuit.html

DC DC Converter Circuit

Get an output of 0.6V to 5.0V DC 10A from an input voltage range of 4.5V to 20V DC using Linear Technology DC DC Converter Module.

Read more : http://www.electronics-project-design.com/DC-DC-Converter-Module.html

Constructing a 12V DC Switch Mode Power Supply

Construct a 12 VDC, 120 mA switch mode supply from AC source of 85-265 VAC.

Good Links
More Circuit construct a power supply
More circuit switch mode power supply
More Switching power supply Circuit
More about 12V power supply circuit


souec: http://www.electronics-project-design.com/SwitchModePowerSupply.html

Constructing a Dual Polarity Supply

supply. With the appropriate choice of transformer and 3-terminal voltage regulator pairs you can easily build a small power supply delivering up to one amp at +/- 5V, +/- 9V, +/- 12V, +/-15V or +/-18V.

Read more : http://www.electronics-project-design.com/DualPowerSupply.html

Variable DC Supply

Another version of variable DC supply using LM317 that uses an LED to show the ON/OFF status of the supply.

Read more : http://www.electronics-project-design.com/VariableDCPowerSupply.html

Constructing a universal DC Supply

This is a basic, text-book, variable DC supply voltage regulator circuit using an LM317 from input supply of 7-20 V AC or 7-30V DC . The output voltage can be set to anywhere in the range 1.5V to 30V.

Read more : http://www.electronics-project-design.com/UniversalPowerSupply.html

Simple fixed 5V DC Power Supplies Project

This project provides the schematic and the parts list needed to construct a simple Supply from an input supply of 7-20 V AC or 7-30V DC. Two DC voltage outputs are available; 5V and variable from 5V upwards.

Related Links
More about 5v dc supply circuit
7805+Mj2955 power supply 5V 5A for digital circuit.
Simple 5V 1A Switching regulator by IC LM2575-5.0
5V 5A switching regulator for digital by LM2678

Source : http://www.electronics-project-design.com/DCPowerSupply.html

Variable 5 to 20V DC Supply

Build your own 5-20V DC power supply using National Semiconductor LM2941 low dropout voltage regulator.

Read more : http://www.electronics-project-design.com/voltageregulator.html

Variable 5 to 15V DC Supply

This is a simple DC regulated supply project using 7805 voltage regulator to obtain a variable DC voltage range from 5V to 15V.

Read more : http://www.electronics-project-design.com/RegulatedPowerSupply.html

Variable 2 to 25V DC Supply

This project uses a LM338 adjustable 3 terminal regulator to supply a current of up to 5A over a variable output voltage of 2V to 25V DC.

Related Links
More about variable dc supply circuit
More about DC Voltage Regulator Circuit
More about Shunt Regulator Circuit
More about Dual Power Supply Circuit

Source:
http://www.electronics-project-design.com/PowerSupplySchematic.html

CAPS PROVIDE VOLTAGE BOOST TO SERIES REGULATOR

CAPS PROVIDE VOLTAGE BOOST TO SERIES REGULATOR
This circuit adds some capacitors and diodes to a traditional transformer type series regulator circuit to extend the normal operating range. It can insure regulation during low line voltage conditions or it can squeeze a few more watts out of a plug-in-the-wall power adapter power supply.

240VAC TO 5VDC POWER SUPPLY

240VAC TO 5VDC POWER SUPPLY
This is simple way to power some 5v logic from a 240vac source. If a 120vac power adapter is used, the circuit will also work for 120vac power lines.

LOW POWER 12,000 VOLT POWER SUPPLY

LOW POWER 12,000 VOLT POWER SUPPLY
If you need about 12,000 volts DC for an ion generator this circuit might be the ticket. It draws power from the 120vac power line but it uses a small 6KV camera flash trigger coil. The output signal is isolated from the power line. Although the circuit can only deliver about 5uA of current it can produce dangerous shocks, so be careful.

MINIATURE ISOLATED AC/DC POWER SUPPLY

MINIATURE ISOLATED AC/DC POWER SUPPLY
This circuit uses a novel approach to produce a fully isolated and regulated 5 volts @30ma from the 120vac power line. It uses two tiny SCRs that alternately discharge two capacitors through a miniature high frequency transformer. The voltage spikes produced through the transformer are rectified, filtered and regulated. A very common 8 ohm audio impedance matching transformer can be used for the transformer