| 摘要 |
PURPOSE: A combiner using a transmission line transformer is provided to reduce production costs of a transmitting terminal by comprising the combiner using the transmission line transformer in a wireless communication system. CONSTITUTION: A combiner using a transmission line transformer comprises first and second differential amplifiers(11,12), a transmission line transformer(20), and a matching unit(30). The first and the second differential amplifiers differentially amplify an input signal. The transmission line transformer comprises a first primary transmission line(21), a second primary transmission line(23), a second secondary transmission line(24), and a first secondary transmission line(22). The matching unit matches input impedances by connecting first resistance(31) to second resistance(32) between differential signal paths of a first differential amplifier and a second differential amplifier. |
