Radio communication apparatus
First Claim
1. A radio communication apparatus being connectable to a radio communication relay unit, the apparatus comprising:
- a connection terminal configured to connect the radio communication apparatus to the radio communication relay unit;
a first band pass filter configured to pass a first frequency band in a received radio frequency signal inputted from the connection terminal;
a second band pass filter configured to pass a second frequency band in a received radio frequency signal inputted from the connection terminal;
a first radio circuit configured to receive the radio frequency signal passed by the first band pass filter; and
a second radio circuit configured to receive the radio frequency signal passed by the second band pass filter.
1 Assignment
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Accused Products
Abstract
In a radio communication apparatus, band-pass filters are provided in correspondence with a multiple-band receiver, a multiple-band transmitter and a GPS receiver, respectively. As radio frequency signals received by an external antenna on a vehicle-mounted adapter is inputted to the radio communication apparatus through the external connection terminal 22, signals in necessary frequency bands are passed by the band-pass filters so as to be inputted to the multiple-band receiver and the GPS receiver, respectively. This makes it possible for the connection terminal to be shared in radio communication by a cellular phone and in GPS reception with reception quality kept high both in the radio communication and the GPS reception to allow the number of external connection terminals to be reduced for providing further downsized and lightweight radio communication apparatus.
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Citations
17 Claims
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1. A radio communication apparatus being connectable to a radio communication relay unit, the apparatus comprising:
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a connection terminal configured to connect the radio communication apparatus to the radio communication relay unit;
a first band pass filter configured to pass a first frequency band in a received radio frequency signal inputted from the connection terminal;
a second band pass filter configured to pass a second frequency band in a received radio frequency signal inputted from the connection terminal;
a first radio circuit configured to receive the radio frequency signal passed by the first band pass filter; and
a second radio circuit configured to receive the radio frequency signal passed by the second band pass filter. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A radio communication apparatus having first and second antennas and being connectable to a radio communication relay unit, the apparatus comprising:
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a connection terminal configured to connect the radio communication apparatus to the radio communication relay unit;
a first band pass filter configured to pass the first frequency band from a received radio frequency signal inputted from the connection terminal;
a second band pass filter configured to pass the second frequency band from a received radio frequency signal inputted from the connection terminal;
a first radio circuit configured to receive the radio frequency signal passed by the first band pass filter;
a second radio circuit configured to receive the radio frequency signal passed by the second band pass filter;
a controller configured to detect a connection with the radio communication relay unit;
a first switch configured to switch connecting the first band pass filter to the first antenna or the connection terminal on the base of the controller detecting; and
a second switch configured to switch connecting the second band pass filter to the second antenna or the connection terminal on the base of the controller detecting. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification