RADIO COMMUNICATION DEVICE AND RADIO COMMUNICATION METHOD
First Claim
1. A radio communication apparatus that has a normal transmitting/receiving mode and a distortion correction mode, the apparatus comprising:
- a transmitting circuit that includes a transmitting processing circuit that generates a high frequency signal from a transmitting baseband signal by radio transmitting process and a power amplifier that amplifies the high frequency signal;
a transmitting antenna that transmits the high frequency signal amplified by the power amplifier;
a receiving antenna that receives the high frequency signal transmitted by the transmitting antenna;
a receiving circuit that includes a low noise amplifier to amplify the high frequency signal received by the receiving antenna and a receiving processing circuit to generate a receiving baseband signal by demodulating the high frequency signal amplified by the low noise amplifier;
a distortion detecting section that detects a distortion component using the transmitting baseband signal and the receiving baseband signal;
an adjustment section that adjusts an degree of coupling between the transmitting antenna and the receiving antenna; and
a control section that switches the degree of coupling depending on the normal transmitting/receiving mode or the distortion correction mode.
1 Assignment
0 Petitions
Accused Products
Abstract
It is provided a radio communication apparatus and radio communication method that, in the radio communication apparatus having a normal transmitting/receiving mode and a distortion correction mode, communicates successfully without influencing circuit characteristic in a normal transmitting/receiving mode, sends back a transmitting signal from the receiving system, extracts a distortion component due to narrowband characteristics or non-linear characteristics of a circuit, and corrects distortion in a distortion correction mode. In radio communication apparatus (100), distortion detecting section (111) extracts a distortion component using a transmitting baseband signal and a receiving baseband signal, coupling degree adjustment circuit (180) adjusts the degree of coupling between transmitting antenna (130) and receiving antenna (140), and coupling degree control section (170) switches the degree of coupling depending on a normal transmitting/receiving mode or a distortion correction mode.
19 Citations
8 Claims
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1. A radio communication apparatus that has a normal transmitting/receiving mode and a distortion correction mode, the apparatus comprising:
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a transmitting circuit that includes a transmitting processing circuit that generates a high frequency signal from a transmitting baseband signal by radio transmitting process and a power amplifier that amplifies the high frequency signal; a transmitting antenna that transmits the high frequency signal amplified by the power amplifier; a receiving antenna that receives the high frequency signal transmitted by the transmitting antenna; a receiving circuit that includes a low noise amplifier to amplify the high frequency signal received by the receiving antenna and a receiving processing circuit to generate a receiving baseband signal by demodulating the high frequency signal amplified by the low noise amplifier; a distortion detecting section that detects a distortion component using the transmitting baseband signal and the receiving baseband signal; an adjustment section that adjusts an degree of coupling between the transmitting antenna and the receiving antenna; and a control section that switches the degree of coupling depending on the normal transmitting/receiving mode or the distortion correction mode. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A radio communication method that is applied to a radio communication apparatus to have a normal transmitting/receiving mode and a distortion correction mode, the method comprising:
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generating a high frequency signal from a transmitting baseband signal by radio transmitting process; generating a transmitting signal by amplifying the high frequency signal; sending the transmitting signal; outputting as a received signal after receiving the transmitting signal; amplifying the received signal; generating a receiving baseband signal by demodulating the amplified received signal; detecting a distortion component using the transmitting baseband signal and the receiving baseband signal; adjusting an degree of coupling between a transmitting antenna and a receiving antenna; and switching the degree of coupling depending on the normal transmitting/receiving mode and the distortion correction mode.
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Specification