MINI-AMPLIFIER FOR TV ANTENNA SIGNAL

The utility model relates to a mini-amplifier for TV antenna signal, comprising an impedance conversion unit, a front stage low noise amplification unit and a main amplification unit. The utility model is characterized in that a small circuit board which is additionally provided with an inductance element L-[1] is adopted; all parts are installed on both sides of the small circuit board which is arranged and sealed in an aluminum pipe with phi 10 mm. The utility model has the advantages that the interaction of distributed capacitance, distributed inductance and shielding is effectively utilized; so the self-excitation is avoided; the size is small; the structure is compact; the utility model is suitable for distant locations with week TV signals; the utility model can be used in all channels of TV; the power can be supplied by a DC power in a TV or dry batteries; the manufacture is simple; the cost is low; the mini-amplifier for TV antenna signal is suitable for being popularized in rural areas or distant locations.