Communications: radio wave antennas – Antennas – With radio cabinet
Reexamination Certificate
2001-11-09
2003-06-10
Phan, Tho (Department: 2821)
Communications: radio wave antennas
Antennas
With radio cabinet
C343S866000, C343S741000
Reexamination Certificate
active
06577280
ABSTRACT:
PRIORITY
This application claims priority to an application entitled “Built-In Antenna Device for Folder-Type Portable Radio Terminal” filed in the Korean Industrial Property Office on Dec. 30, 2000 and assigned Serial No. 2000-87223, the contents of which are hereby incorporated by reference.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates generally to an antenna device for a folder-type terminal, and in particular, to a built-in antenna device installed within a folder-type portable radio terminal that is separated from the human body by a maximum distance when a user utilizes the terminal to improve the outer appearance of the terminal.
2. Description of the Related Art
As portable radio terminals become commonplace, diverse functions and designs are developed for them. Portable radio terminals designed with a diversity of functions are small and lightweight because it is important to many customers. To satisfy the customers' demand for portable terminals, the terminals must be less bulky while they maintain their functionality at the same level or greater. The most suitable candidate for the miniaturization of radio terminals are folder-type terminals which increasingly have come to the market and are being further, developed to be scaled down and include a variety of functions.
FIG. 1
is a perspective view of a typical folder-type portable radio terminal in an on-hook state and
FIG. 2
is a perspective view of the typical folder-type portable radio terminal in an off-hook state.
Referring to
FIGS. 1 and 2
, the folder-type portable radio terminal is comprised of a main body
1000
, a folder
2000
, and a hinge device within arm
2030
that mechanically connects the main body
1000
to the folder
2000
at an angle where a user is able to utilize the portable radio terminal to communicate with other radio terminals.
The main body
1000
includes an upper casing frame
1001
, a lower casing frame
1002
, an antenna device
1010
, side arms
1015
a
and
1015
b
, an incoming call lamp
1016
, a keypad
1020
and a microphone
1030
. Antenna device
1010
is located at the uppermost side of the main body
1000
. Keypad
1020
includes a plurality of function keys and digit keys. Microphone
1030
and keypad
1020
are sequentially arranged under the antenna device
1010
. Side arms
1015
a
and
1015
b
are formed between the antenna device
1010
and the keypad
1020
, on the main body
1000
, and a slot
1017
is defined between the side arms
1015
a
and
1015
b
. Incoming call lamp
1016
is disposed on one side arm
1015
b.
The folder
2000
includes an earpiece
2010
, a Liquid Crystal Display
2020
and a cylindrical center hinge arm
2030
.
Earpiece
2010
, including a speaker, is located on the uppermost part of the folder
2000
rotatably connected to the main body
1000
by the cylindrical center hinge arm
2030
. LCD (Liquid Crystal Display) module
2020
, is disposed under the earpiece
2010
.
Cylindrical center hinge arm
2030
is installed in the slot
1017
under the folder
2000
. A hinge device is provided in the cylindrical center hinge arm
2030
. Therefore, the folder
2000
rotates on a rotating axis A
1
with respect to the main body
1000
.
The antenna device
1010
is preferably a combination of a helical antenna electrically connected to an RF (Radio Frequency) board of the main body
1000
and a whip antenna (rod antenna) extendable from the helical antenna.
Since the antenna device
1010
is installed on the main body
1000
, it is near to the human body when a user uses the terminal, thereby deteriorating the performance of the radio terminal. Due to the protrusion of the antenna device
1010
outside the terminal, the antenna device
1010
is vulnerable to damage when the terminal is dropped and the antenna can also become a nuisance when the user carries the terminal.
For example, a user may be bothered when he has to constantly extend the antenna of his mobile terminal in order to obtain a good transmission signal to receive or send a message.
SUMMARY OF THE INVENTION
It is, therefore, an object of the present invention to provide a built-in antenna device that is so installed within a folder-type portable radio terminal as to contribute to the miniaturization of the folder-type portable radio terminal.
It is another object of the present invention to provide a built-in antenna device that is installed at the periphery of a folder-type portable radio terminal, which prevents deterioration of the performance the radio terminal caused by a human body contacting the antenna device body.
It is a further object of the present invention to provide a built-in antenna device that is disposed in the folder of a folder-type portable radio terminal in order to be separated from a human body by a maximum distance.
The foregoing and other objects are achieved by a built-in antenna device in a folder-type portable radio terminal having a body and a folder mounted to the main body to be rotatable at a predetermined angle with respect to the main body. A metal loop antenna is installed along the peripheral contour of the folder and an electrical connection means electrically connects the metal loop antenna to an RF board of the main body.
REFERENCES:
patent: 4992799 (1991-02-01), Garay
patent: 5170173 (1992-12-01), Krenz et al.
patent: 5451965 (1995-09-01), Matsumoto
patent: 5508709 (1996-04-01), Krenz et al.
patent: 5542106 (1996-07-01), Krenz et al.
patent: 5557293 (1996-09-01), McCoy et al.
patent: 6292145 (2001-09-01), Yu
Dilworth & Barrese LLP
Phan Tho
Samsung Electronics Co,. Ltd.
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