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“RF Transmitter Circuits Resources”的内容更新

累计：27 篇（自 2009-09-16 起）

更新：约11篇/年，最后更新881 天前

RF Transmitter Circuits Resources

RF Amplifier Broadband 88-108 MHz 20W

this rf amplifier for fm 88-108 mhz with no tune (broadband) needed to cover all the fm band. this rf power amplifier is equiped with two philips bipolar transistors : the blv10 & blw87.all the impedance networks (input-output) of this rf amplifier have been determined by using the softwares: mimp.exe.this rf amplifier need a 9 elements low pass f... (306 天前)

http://inezha.com/w/e9rjiuh

RF Transmitter Circuits Resources

RF Amplifier Broadband 88-108 MHz 8W

this rf amplifier for fm 88-108 mhz with no tune (broadband) needed to cover all the fm band. you need the 2n3866 driver stage to boost properly the blv10 transitor.all the impedance networks (input-output) of this rf amplifier have been determined by using the softwares: mimp.exe - genesys.due to the good harmonic rejection of the rf amplifier d... (306 天前)

http://inezha.com/w/rzb01u9

RF Transmitter Circuits Resources

Broadband RF Power Amplifier 1.8-30 MHz

here's rf power amplifier for qrp with low cost. this circuit is a broadband one from 1.8 to 30 mhz, so it is "no-tune" and you need only to regulate the quiescent current bias multiturn trimmer of each mosfets couple. this means also low efficiency (for a lower imd it is even low as around 20-30%) together with good heat sink + blower system.hf qrp li... (306 天前)

http://inezha.com/w/n4yq7uv

RF Transmitter Circuits Resources

Field-Strength Meter

this is a very straightforward field-strength meter circuit. the first stage acts as a crystal receiver. use a germanium detector diode (like 1n34, but aa119 is much more common in europe), a silicon one won't do. the frequency is determined by l and c. for the fm band and vhf, wind a coil 5mm in diameter, 6-8 turns of coated wire 1mm thick. you can alwa... (306 天前)

http://inezha.com/w/9lr76ut

RF Transmitter Circuits Resources

9 Elements Yagi Antenna 144 MHz

in the amateur radio communications, this yagi antenna is usually used for long-distance communications, ham are usually first gp without the use of directional antenna contact with each other, and then yagi antenna at the other location, and then start communication. in other words, this antenna to match the one antenna rotator to achieve its effectiven... (306 天前)

http://inezha.com/w/b3bfluq

RF Transmitter Circuits Resources

Switchable RF Probe-Watt Meter

this is an unique project is one of the most trusted homemade test instruments to have, once you get your fm transmitter up and running. this simple little device (the switchable rf probe-watt meter), is capable of finding your fm transmitters :unloaded rms output voltageloaded rms output voltageoutput impedanceoutput wattage construction of th... (306 天前)

http://inezha.com/w/tvyd5uy

RF Transmitter Circuits Resources

10-500 MHz Wideband RF Amplifier

this rf amplifier circuit is suitable for the frequencies between 10mhz and 500mhz. these kind of amplifiers are called wide band amplifiers. wideband amplifiers are used in communication receivers, rf measuring equipment and tons of other devices.the rf power amplifier circuit described here uses a state of the art transistor to get maximum performanc... (306 天前)

http://inezha.com/w/xurei5p

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