| 摘要 |
PROBLEM TO BE SOLVED: To largely reduce distortion by optimizing input impedance without changing input/output impedance matching in a frequency of an input signal. SOLUTION: The amplifier comprises a transistor 101 which amplifies two or more input signals with different frequencies. A real part of impedance seen from an input terminal of the transistor 101 is adjusted by a resistor 112 in a bias supply circuit without changing input/output impedance matching in a frequency of the input signal in a frequency band corresponding to frequency difference of two input signals, moreover, an imaginary part of impedance seen from the input terminal of the transistor 101 is adjusted by a transmission line 122 in a frequency band corresponding to twice frequency of the input signal. COPYRIGHT: (C)2005,JPO&NCIPI
|
