| 摘要 |
<p>According to one embodiment, a phase shifter (1) includes an input terminal (2); an output terminal (5); a first signal path (3); a second signal path (4); and a switching circuit (16,17) for selectively connecting one of the first signal path (3) and the second signal path (4) to the input terminal (2) and the output terminal (5). The first signal path (3) includes a high-pass filter (8) constituting a main path and a low-pass filter (9) secondarily added in parallel to the high-pass filter (8) and constituting a subsidiary path. The low-pass filter (9) compensates for insertion loss caused by the high-pass filter (8) in a frequency range in which a transmission phase difference is given to an RF signal passing through the high-pass filter (8).
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