Receiving circuit, receiving device, and receiving method

摘要

A receiving circuit includes: a mixing section configured to mix a local oscillation signal with a positioning signal that is received by an antenna within a constant receiving frequency band that includes a resonance frequency of the antenna, and output a mixed signal of the local oscillation signal and the positioning signal; and a control section configured to sequentially select any of a plurality of carrier frequency bands used in the positioning signal, and configured to switch the resonance frequency of the antenna to a specific frequency within the selected carrier frequency band, and switch a frequency of the local oscillation signal, based on the specific frequency and a frequency of the mixed signal.

主权项

1. A receiving circuit, comprising:
a mixing section configured to mix a local oscillation signal with a positioning signal that is received by an antenna and output a mixed signal of the local oscillation signal and the positioning signal; a baseband section configured to estimate a quantity of visible satellites for each of a plurality of carrier frequency bands used in the positioning signal; and a control section configured to select one of the plurality of carrier frequency bands based on the estimation, switch a resonance frequency of the antenna to a specific frequency, and set a frequency of the local oscillation signal, wherein,
the mixing section is configured to mix the positioning signal with the local oscillation signal in which a phase of the local oscillation signal is synchronized with a predetermined reference phase, and output the mixed signal of the local oscillation signal having the synchronized phase and the positioning signal.