Patent ID: 11949394
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. The phase shifter according to claim 3, further comprising a control circuit to set, when a frequency of the input signal is included in the first frequency band and a phase shift amount of an output signal to the input signal is larger than zero degrees and equal to or smaller than 180 degrees, an amplification factor of the fourth variable gain amplifier to zero, and adjust an amplification factor of each of the first variable gain amplifier, the second variable gain amplifier, and the third variable gain amplifier in accordance with the phase shift amount, and
set, when the frequency is included in the second frequency band and a phase shift amount of an output signal to the input signal is larger than 180 degrees and equal to or smaller than 360 degrees, an amplification factor of the second variable gain amplifier to zero, and adjust an amplification factor of each of the first variable gain amplifier, the third variable gain amplifier, and the fourth variable gain amplifier in accordance with the phase shift amount.