Wireless communication device for receiving mobile broadcasting signal and transmitting/receiving bluetooth signal with single antenna

• US 20080025276A1
• Filed: 02/02/2007
• Published: 01/31/2008
• Est. Priority Date: 07/27/2006
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Lee, Seong Wook, Kim, Kee Dug
• Granted Patent: US 7,937,046 B2
• Time in Patent Office: Days
• US Class Current: 370/338
• CPC Class Codes: H04B 1/18 Input circuits, e.g. for coupling to an antenna or a transmission line coupling networks between antennas or lines and receivers independent of the nature of the receiver H03H
• CPC Class Codes: H04H 40/18 Arrangements characterised by circuits or components specially adapted for receiving

Abstract

Provided is a wireless communication device for receiving a mobile broadcasting signal and transmitting/receiving a Bluetooth® signal through a single antenna, which allows separation of the two signals using a difference in their frequency bands. A diplexer separates the signals using different band-pass filters. The signals are respectively input into a mobile broadcasting module and a Bluetooth® module. The wireless communication device allows reception of mobile broadcasting and Bluetooth signals within different frequency bands through a single antenna, thus achieving a compact and thin device with a reduced antenna mounting space.

Claims

1. A wireless communication device comprising:

a single antenna for receiving a mobile broadcasting signal and transmitting and receiving a Bluetooth®

signal;

a diplexer connected to the antenna and including a first band-pass filter for passing the mobile broadcasting signal and a second band-pass filter for passing the Bluetooth®

signal;

a mobile broadcasting module connected to the first band-pass filter for decoding the mobile broadcasting signal; and

a Bluetooth®

module connected to the second band-pass filter for converting the Bluetooth®

signal into data.

2. The device of claim 1, wherein the mobile broadcasting signal is a T-DMB (Terrestrial Digital Multimedia Broadcasting) signal and the mobile broadcasting module is a T-DMB module.

3. The device of claim 2, wherein the first band-pass filter is an LPF (Low-Pass Filter) and the second band-pass filter is an HPF (High-Pass Filter).

4. The device of claim 3, wherein the T-DMB signal has two different types of signals having first and second frequency bands, respectively.

5. The device of claim 4, further comprising:

a third band-pass filter connected between the LPF and the T-DMB module for passing the T-DMB signal from the first frequency band; and

a fourth band-pass filter connected between the LPF and the T-DMB module for passing the T-DMB signal from the second frequency band.

6. The device of claim 3, wherein the T-DMB signal includes a band-3 signal and an L-band signal.

7. The device of claim 6, further comprising:

a band-3 filter connected between the LPF and the T-DMB module for passing the band-3 signal of the T-DMB signal; and

an L-band filter connected between the LPF and the T-DMB module for passing the L-band signal of the T-DMB signal.

8. The device of claim 1, wherein the mobile broadcasting signal is an S-DMB (Satellite DMB) signal and the mobile broadcasting module is an S-DMB module.

9. The device of claim 8, wherein the first band-pass filter is an HPF and the second band-pass filter is an LPF.

10. The device of claim 1, further comprising:

a headset for receiving the Bluetooth®

signal through the antenna.