Friday, March 27, 2015
This is the circuit diagram of powerful AM transmitter which use ceramic resonator/filter of 3.587 MHz. Resonators/filters of other frequencies such as 5.5 MHz, 7 MHz and 10.7 MHz may also be used. Use of different frequency filters/resonators will involve corresponding variation in the value of inductor used in the tank circuit of oscillator connected at the collector of transistor T1.
RF Amplifier Labels: AM Transmitter
Saturday, June 21, 2014
Here the Radio Frequency (RF) amplifier circuit design for frequency 1296 MHz.
By using an NEC70083, this 1296-MHz amplifier delivers about 17-dB gain and around 1- to 1.5-dB noise. It is assembled on a G-10 epoxy fiberglass PC board. Use the layout shown because this is very important for correct performance.
RF Amplifier Labels: RF Amplifier Circuit