The following single-stage transistor linear amplifier posseses a gain of approximately 7 dB and an output power of 1 W in the 13 cm band (approx. 2.4 GHz). It is thus suitable for use, for instance, together with the 13 cm transmit converter. This hybrid power mixer equipped with a varactor diode type BXY. This mean that the described 2.4 GHz power amplifier can provide linear output power in the order of 1 W.
CIRCUIT DESCRIPTION
A transistor type F1E6 manufactured by CTC is used. In this case of this transistor, the emitter is internally connected to the cooling bolt. This ensures that there are no problems with respect to the high-frequency grounding of the emitter. The circuit diagram of this 2.4 GHz power amplifier is given in figure 1. The matching of the transistor input and ouput impedance to 50 Ohm is made using standard method in (2) The circuit for adjusting and stabilizing the DC-operating point is similar to the method described in (3)
CONSTRUCTION
Double coated, epoxy glassfibre material is also for applications in 13 cm band. PC Board DC 3 QS 003 has dimensions of 70 mm x 45 mm, and it shown in figure 2. Of course, it would have been possible to use the more expensive material, non-readily available PTFE PC Board material, but it is not necessary for applicating this 2.4 GHz power amplifier. Download documentation: 2.4 GHZ Power Amplifier R. Heideman Article. Source : 6mt.com
See more: FM Preamplifier - TV Transmitter - Transistor FM Transmitter
Posts
No comments:
Post a Comment