Mobile Telephone Device With Broadcasting Receiver

• US 20090023396A1
• Filed: 05/19/2006
• Published: 01/22/2009
• Est. Priority Date: 05/20/2005
• Status: Abandoned Application

• Current Assignee: Panasonic Corporation (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Yamazaki, Yukari, Sasaki, Hiroyuki, Nagano, Kenya, Saitoh, Yutaka
• Application Number:
  US11/813,545
• Publication Number:
  US 20090023396A1
• Time in Patent Office: Days
• US Class Current: 455/75
• CPC Class Codes: H01Q 1/243 with built-in antennas
• CPC Class Codes: H01Q 1/36 Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewithH01Q1/08, H01Q1/14 take precedence
• CPC Class Codes: H01Q 21/30 Combinations of separate antenna units operating in different wavebands and connected to a common feeder system
• CPC Class Codes: H01Q 5/371 Branching current paths
• CPC Class Codes: H01Q 5/40 Imbricated or interleaved structures; Combined or electromagnetically coupled arrangements, e.g. comprising two or more non-connected fed radiating elements
• CPC Class Codes: H01Q 7/005 with variable reactance for tuning the antenna
• CPC Class Codes: H01Q 9/145 by varying the electrical length
• CPC Class Codes: H04B 1/3805 with built-in auxiliary receivers

Abstract

It is to provide a mobile telephone device with the broadcasting receiver having high sensitivity over a broad band. A meander element 14 is disposed in parallel to an opening surface 5a of a loop element 5, and the two elements 5 and 14 are connected directly in a feeding point 9 so as to be supplied with power in parallel. Thus, the two elements 5 and 14 operate as antennas taking charge of upper and lower divided bands of a frequency band respectively.

Claims

1. A mobile telephone device with a broadcasting receiver, comprising:

a loop element which is provided near an upper end portion of a housing;

a variable tuning unit which changes a tuning frequency of the loop element; and

a meander element or a helical element which is disposed closely to the loop element,

wherein a feeding portion of the loop element and a feeding portion of the meander element or the helical element are connected directly to each other.

2. The mobile telephone device with the broadcasting receiver according to claim 1, wherein the meander element or the helical element is disposed more closely to the upper end portion of the housing than the loop element.

3. The mobile telephone device with the broadcasting receiver according to claim 1, wherein the meander element or the helical element is disposed so that a width direction thereof is parallel to an opening surface of the loop element.

4. The mobile telephone device with the broadcasting receiver according to claim 1, wherein the tuning frequency of the loop element is set to change within a lower band of a broadcasting receiving frequency band by the variable tuning unit;

and

wherein a resonance frequency of the meander element or the helical element is set within an upper band of the broadcasting receiving frequency band.

5. A mobile telephone device with a broadcasting receiver, comprising:

a first loop element which is provided near an upper end portion of a housing;

a variable tuning unit which changes a tuning frequency of the first loop element; and

a second loop element is disposed closely to the loop element.

6. The mobile telephone device with the broadcasting receiver according to claim 5, wherein the second loop element is disposed so that an opening surface thereof is parallel to an opening surface of the first loop element.

7. The mobile telephone device with the broadcasting receiver according to claim 5, wherein the second loop element is disposed more closely to the upper end portion of the housing than the first loop element.

8. The mobile telephone device with the broadcasting receiver according to claim 5, wherein a variable tuning unit is provided in the second loop element.

9. The mobile telephone device with the broadcasting receiver according to claim 7, wherein a tuning frequency of the second loop element is set to be higher than the tuning frequency of the first loop element.

10. The mobile telephone device with the broadcasting receiver according to claim 5, wherein the second loop element is formed to have a retractable structure;

wherein the first and second loop elements are designed so that an opening surface of the second loop element and an opening surface of the first loop element can be parallel to each other in a state where the second loop element is pulled out; and

wherein a loop length of the second loop element is set to be longer than a loop length of the first loop element.

11. The mobile telephone device with the broadcasting receiver according to claim 8, wherein a tuning frequency of the second loop element is set to be higher than the tuning frequency of the first loop element.