WIRELESS DEVICE

• US 20130258915A1
• Filed: 03/28/2013
• Published: 10/03/2013
• Est. Priority Date: 03/30/2012
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: KANNARI, Hideyuki, HARA, Masanori
• Granted Patent: US 9,425,947 B2
• Time in Patent Office: Days
• US Class Current: 370/281
• CPC Class Codes: H04B 1/0057 using diplexing or multiplexing filters for selecting the desired band
• CPC Class Codes: H04L 5/06 the signals being represented by different frequencies combined with time-division multiplexing H04L5/26
• CPC Class Codes: H04L 5/143 for modulated signals H04L5/1469 takes precedence

Abstract

A wireless device includes an input/output port that receives a first transmission signal subjected to transmission processing by another wireless device, the first transmission signal being output from the another wireless device, the another wireless device using a second frequency band adjacent to a first frequency band used by the wireless device, a synthesis circuit that synthesizes the first transmission signal received via the port and a second transmission signal subjected to transmission processing by the wireless device and that outputs the synthesized signal via an antenna, and a splitting circuit that splitbranches a first reception signal of the first frequency band and a second reception signal of the second frequency band, the first and the second reception signals being included in a reception signal received via the antenna, the splitting circuit outputting a split reception signal of the second frequency band via the port to the other wireless device.

Claims

1. A wireless device comprising:

an input/output port that receives a first transmission signal subjected to transmission processing by another wireless device, the first transmission signal being output from the another wireless device, the another wireless device using a second frequency band adjacent to a first frequency band used by the wireless device;

a synthesis circuit that synthesizes the first transmission signal received via the input/output port and a second transmission signal subjected to transmission processing by the wireless device, the synthesis circuit outputting the synthesized signal via an antenna; and

a splitting circuit that splits a first reception signal of the first frequency band from a reception signal and a second reception signal of the second frequency band from the reception signal, the first reception signal and the second reception signal being included in the reception signal received via the antenna, the splitting circuit outputting a split reception signal of the second frequency band via the input/output port to the other wireless device.

2. The wireless device according to claim 1, further comprising a circulator circuit that outputs the first transmission signal received via the input/output port to the synthesis circuit and that outputs the second transmission signal output from the splitting circuit to the other wireless device via the input/output port.

3. The wireless device according to claim 2, further comprising an attenuation circuit that attenuates the first transmission signal output from the circulator circuit and outputs the attenuated signal to the synthesis circuit.