| 摘要 |
A multi band low noise amplifier capable of miniaturizing is provided to reduce the number of part mounted outside by differentially amplifying without an additional circuit. A multi band low noise amplifier capable of miniaturizing comprises a first RF(Radio Frequency) input unit(11), a second RF input unit(12), a first conversion unit(13), a second conversion unit(14), and an output unit(15). The first RF input part receives a signal of a first frequency wideband. The second RF input unit receives a signal of a second frequency wideband. The first conversion unit includes a first transistor having a first terminal receiving a signal from the first RF input unit and a second terminal receiving a signal from the second RF input unit. The second conversion unit includes a second transistor having a second terminal receiving a signal from the first RF input unit and a first terminal receiving a signal from the second RF input unit. The output unit is connected to the first and the second conversion units, and outputs a differential signal. |
