Active Antenna for AM/FM/SW

Active Antenna for AM/FM/SW
This simpleĀ  AM/FM/SW Active Antenna circuit are able to be used for AM, FM, and Shortwave(SW). For the shortwave band, this kind of active antenna is comparable to a 20 to 30 ft wire antenna. It's in addition designed to be used on receivers which use untuned wire antennas, for example cheap models and car radios. (more…)

RF Amplifier Circuit : 1 Watt 2.3GHz based MRF2001

RF Amplifier Circuit : 1 Watt 2.3GHz based MRF2001
This the 1W RF amplifier circuit which used a common-base power transistor MRF2001, a class C amplifier. This RF amplifier delivers about 1 Watt power output with 8-dB minimum gain at 24V voltage supply. The frequency can be tuned from 2.25GHz to 2.35GHz. Applications include microwave communications equipment and other systems that require medium-power narrow-band amplification. The amplifier circuitry consists almost entirely of distributed microstrip elements. A total of six additional components, including MRF2001 are required to build a