| 摘要 |
PROBLEM TO BE SOLVED: To obtain a frequency band combining amplifier, in which a decrease in gain of amplifiers that are connected in parallel is suppressed and followability to frequency sweep at a band-combined frequency is improved.SOLUTION: Circulators 5 and 6 are arranged between a high frequency distributor 13 and a high-band band-pass filter 9 on an input side and between the high frequency distributor 13 and a low-band band-pass filter 10 on an input side, respectively, and thereby reflected powers of the high-band band-pass filter 9 and the low-band band-pass filter 10 are extracted by the circulators 5 and 6, respectively. Further, high frequency combiners 15 and 16 are arranged between the high-band band-pass filter 9 and a high-band amplifier 3 and between the low-band band-pass filter 10 and a low-band amplifier 4, respectively.SELECTED DRAWING: Figure 1 |
