WO2002054539A1 - Antenna for portable wireless machinery - Google Patents

Antenna for portable wireless machinery Download PDF

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Publication number
WO2002054539A1
WO2002054539A1 PCT/KR2000/001552 KR0001552W WO02054539A1 WO 2002054539 A1 WO2002054539 A1 WO 2002054539A1 KR 0001552 W KR0001552 W KR 0001552W WO 02054539 A1 WO02054539 A1 WO 02054539A1
Authority
WO
WIPO (PCT)
Prior art keywords
antenna
spring
road
ring
wire
Prior art date
Application number
PCT/KR2000/001552
Other languages
French (fr)
Inventor
Eung-Soon Chang
Original Assignee
Eung-Soon Chang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eung-Soon Chang filed Critical Eung-Soon Chang
Priority to PCT/KR2000/001552 priority Critical patent/WO2002054539A1/en
Publication of WO2002054539A1 publication Critical patent/WO2002054539A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q11/00—Electrically-long antennas having dimensions more than twice the shortest operating wavelength and consisting of conductive active radiating elements
    • H01Q11/02—Non-resonant antennas, e.g. travelling-wave antenna
    • H01Q11/08—Helical antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H01Q1/244—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas extendable from a housing along a given path

Definitions

  • Figure 1 is a drawing showing a conventional antenna.
  • Figure 2 is a drawing showing the helical antenna in a conventional antenna.
  • Figure 3 is a drawing showing + cutting portion and C-ring portion in a conventional antenna.
  • FIG. 4 is a drawing showing the antenna of the present invention.
  • Figure 5 is a drawing showing the helical antenna of the present invention.
  • FIG. 6 is a drawing showing C-ring used on the antenna of the present invention.
  • Figure 7 is a flow chart showing the assembly process of the antenna of the present invention.
  • Figure 8 is a drawing showing the Smith chart of the antenna of the present invention and a conventional antenna.
  • Figure 9 is a drawing showing the standing-wave ratio of the antenna of the present invention and a conventional antenna.
  • Figure 10 is a drawing showing the moribund loss of the antenna of the present invention and a conventional antenna.
  • Figures- 11 to 14 are drawings showing the radiation pattern of the antenna of the present invention and a conventional antenna.
  • Figure 11 is a graph showing the radiation pattern of 824MHz
  • Figure 12 is a graph showing the radiation pattern of 849MHz
  • Figure 13 is a graph showing the radiation pattern of 869MHz
  • Figure 14 is a graph showing the radiation pattern of 894MHz
  • the present invention relates an antenna for portable wireless machinery which is attached to portable wireless machinery, and therefore, transmits and receives high frequency signals of fixed frequency, and particularly to an antenna, for portable wireless machinery which by improving the structures of a spring and a c-ring built in a helical antenna, thus enhancing the band width of the antenna, despite change in frequency, allows communication quality to be less influenced, and subsequently, allows impedance to be enhanced and standing-wave ratio to become closer to the base value.
  • wireless machinery uses antenna to carry out wireless communication.
  • wireless machinery supplies high frequency signal which is output from the modulation portion, thus transmits it into the air.
  • such machinery received via antenna fixed frequency signals transmitted through the air.
  • the impedance of antenna and transmitter-receivers are matched with each other and loss is reduced by preventing unnecessary radiation.
  • a antenna used on portable wireless machinery has the following characters' A helical antenna and a road antenna are integral in such antenna and the helical antenna is operated where the road antenna is inserted and the road antenna is combined with the helical antennas in a parallel manner where the road antenna, is extended. Accordingly, the operation of antenna is mostly carried out in the road antenna.
  • the helical antenna of this antenna has a spring which a fixed wire is wound around it.
  • Figure 1 is a drawing showing a conventional antenna.
  • signal 2- is the antenna portion.
  • Said antenna portion (20) is composed of
  • a handle (21) enabling a user to hold it by hand, where an antenna is extended and/or inserted;
  • a helical antenna (23) having a spring (25) which is operated where it combines with the body of wireless machinery (not illustrated), and which winds around the fixed wire; Ni-Ti wire (24) which in a case where the antenna is extended, parallel combines with said helical antenna (23), thereby serving as antenna.
  • FIG 2 is a drawing showing the helical antenna (23) in the antenna of said figure 1.
  • a helical antenna (23) wherein a spring (25) at the inner part and a metal road (26) combined with the spring (25) are equipped, therefore, the lower portion of the spring (25), is wound around the metal road (26) in one (1) Turn, thus being fixed by pucker
  • the bobbin (27) made of rubber is inserted at the inner part of said spring (25), thereby supporting the spring (25)
  • Figure 3 is a drawing showing + cutting portion (28) and c-ring (29) used on a conventional helical antenna On the condition that a c-ring (29) is inserted at the r outer side of the + cutting portion (28), it is inserted at and fixed to the lov r said metal road (28):
  • the reflection loss is high, thus the band width which can be covered by the antenna, is narrow. Accordingly, either where the antenna is touched by a person's hand or where frequency is changed at the time of communication, the communication quality will be influenced. Since the impedance of the antenna does not reach the base value, 50 ⁇ , the transmitter-receiver and impedance are likely to be mismatched. Producing/Outputting standing-wave ratio bigger than the basic value. So, electric power reflection is high and eiectric power loss at the antenna is great.
  • the purpose of the present invention to an antenna for portable machinery which enhances the band width by improving the structures of a spring and c-ring built in a helical antenna, and less influences communication quality even where the movement of frequency occur at the time of communication, and which makes the standing-wave ratio become closer to the base value, together with the enhancement of impedance.
  • composition and effect of the invention According to an antenna for portable wireless machinery of the present invention for accomplishing the purpose,
  • An antenna for portable wireless antenna comprises:
  • a helical antenna wherein a metal road is fixed by being inserted and soldered at one side of a spring, and a bobbin is inserted at the inner side of the spring, and then the metal road, the bobbin and the spring are inserted and injected;
  • a road antenna which consists of a handle, an insulation portion and a wire and which is inserted in the middle portion of said helical antenna and is fetched
  • said spring wherein a wire to have a fixed width by being rolled, is wound and formed, a c-ring is built at the inner side of said metal road, said c-ring wherein a plurality of elastic plate (30A) is formed at the side, by press-finishing beryllim bronze to elastically support said fetched and inserted road antenna.
  • the present invention has the following features:
  • a portable wireless antenna comprises:
  • a helical antenna wherein a metal road is fixed by being inserted and soldered at one side of a spring, and a bobbin is inserted at the inner side of the spring, and then the metal road, the bobbin and the spring are inserted and injected;
  • a road antenna which consists of a handle, an insulation portion and a wire and which is inserted and fetched in the middle portion of said helical antenna
  • said spring wherein a wire to have a fixed width by being rolled, is wound and formed, a c-ring is built at the inner side of said metal road, said c-ring wherein a plurality of elastic plate (30A) is formed at the side, by press-finishing beryllim bronze to elastically support said fetched and inserted road antenna.
  • FIG. 4 is a drawing showing the antenna of the present invention. As illustrated therein,
  • an antenna portion (20) of wireless machinery consisting of a handle (21), a insulation portion (22), a helical antenna (23) and Ni-Ti wire (24),
  • Said spring (25A) is formed by rolling and winding a wire of fixed diameter and a plurality of elastic plate (30A) is formed inside by the press finishing of beryllium bronze by C-ring (30).
  • signal 31 which is not explained, is a stopper and the signal is fixed to the lower portion of said Ni-Ti wire (24), thereby Ni- Ti wire (24) not being detached from the helical antenna (23)
  • Figure 5 is a drawing showing a helical antenna in the antenna of the present invention. As illustrated, the acrocentric portion of the metal road (26) is inserted at one end of said spring (25 A), and subsequently, the portion is fixed by being soldered, and then the bobbin (32) is inserted inside the spring (25 A)
  • FIG. 6 is a drawing showing C-ring used on the antenna of the present invention
  • the C-ring (30) of the present invention is in its entirety formed as a cylindrical body and the four elastic plates (30A) to elastically fix the antenna, at the time when the antenna is detached from and attached to the body, is i n ortrolli r rArtrj ⁇ ⁇ r nrocc fir. ⁇ ph ⁇ n t m r > «->*-
  • the antenna of the present invention is fixed by being inserted and soldered at the assembly portion, to fix the spring (25A) to the metal road (26).
  • the spring (25 A) allows the outer diameter to roll about ⁇ 0.5 wire, thereby to have fixed width, and then to wound it at fixed interval fixed times, for example, about 8.5 times
  • heat-treated beryllium bronze is used as C-ring (30) and a plurality of elastic plate (30A) by press-finishing, is formed inside.
  • FIG 7 is a flow chart showing the assembly process of the antenna of the present invention. As illustrated, the C-ring (30) which is process-finished like (A), is inserted at a Roguro (33) and puckers " like (B).
  • the spring (25 A) is assembled and soldered at the Roguro (33) like (C).
  • the spring (25A) inserts the bobbin (32) at the assembled Roguro (33) upwardly and downwardly.
  • the assembled Roguro is inserted and injected, thereby forming the helical antenna (23).
  • the injected helical antenna (23) inserts a nob (22) at the pipe, a stopper (31) is fixed by being inserted at and punching the lower portion of the Ni-Ti wire (24).
  • a C-ring (30) which is inserted at the inner side of the lower portion of the spring (25A), is formed as a cylindrical body having a plurality of the elastic plat ⁇ (30A) at the inner side of the lateral, where the -insulation portion (22) and the Ni-Ti wire (24) are fetched, the insulation portion (22) and the Ni-Ti wire (24) are supported, being under elasticity by said elastic plate (30A), and is fixed. Also, where the insulation portion (22) and the Ni-Ti wire (24) are inserted, they are elastically fixed by said elastic plate (30A).
  • Figure 8 is a drawing illustrating the Smith chart of the antenna of the present invention and a conventional antenna
  • Figure 9 is a drawing showing the standing- wave ratio
  • Figure 10 is a drawing showing the reflection loss.
  • the position (1) and the position (2) of point (V and ⁇ ) are the transmit frequency band, 824MHz and 849 MHz.
  • Those of point (3) and the position (4) are the transmit frequency band, 869MHz and 894MHz.
  • the antenna of the present invention is closer to the base value of antenna, 50 ⁇ than conventional antennas.
  • the standing-wave ratios in 824MHz, 849MHz, 869MHz and 894MHz are 1.4446, 1.2319, 1.3118 and 1.7946. That is to say, the standing-wave ratio of the antenna of the present invention is lower than conventional antenna, therefore, the antenna of the present invention has broader band width than conventional antennas
  • the reflection loss of the antenna of the present invention are -12.121dB, -17.09dB, - 20 305dB and -12 246dB in 824MHz, 849MHz, 869MHz and 894MHz respectively. It show that the reflection loss of the antenna of the present invention is lower than conventional antennas.
  • FIGs 11 to 14 are drawings showing the radiation pattern of the antenna of the present invention and a conventional antenna and graphs illustrating the radiation pattern at 824MHz, 849MHz, 869MHz and 894MHz respectively.
  • each maximum value in 824 is 32.18dB and -32.85db respectively in the direction of - 65 °.
  • the maximum in 849MHz is -31.18db respectively in the direction of -50.01 ° and - 32.53dB in the direction of -50 °.
  • the maximum value in 869MHz is -31.95dB in the direction of -49.99 ° and -32.52dB in the direction of -55
  • the maximum is -30.44dB in the direction of -50.01 and -31.11dB in the direction of -50 °.
  • the antenna of the present invention radiated as having higher value.
  • the present invention has the following effects:

Abstract

By improving the structures of a spring and a c-ring, which are built inside a helical antenna, and thus enhancing the width of the band of the antenna, despite change in frequency, communication quality is less influenced, and subsequently, impedance is enhanced and the standing-wave ratio becomes closer to the base value. A portable wireless antenna comprises: a helical antenna wherein a metal road is fixed by being inserted and soldered at the one side of a spring, and a bobbin is inserted at the inner side of the spring, and then the metal road, the bobbin and the spring are inserted and injected; a road antenna which consists of a handle, an insulation portion and a wire and which is inserted and fetched in the middle portion of said helical antenna, said spring wherein a wire to have a fixed width by being rolled, is wound and formed, a c-ring is built at the inner side of said metal road, said c-ring wherein a plurality of elastic plates is formed at the side, by press-finishing beryllium bronze to elastically support said fetched and inserted road antenna.

Description

[ Title of the Invention ]
Antenna for portable wireless machinery
[ Brief Description of drawings ]
Figure 1 is a drawing showing a conventional antenna.
Figure 2 is a drawing showing the helical antenna in a conventional antenna.
Figure 3 is a drawing showing + cutting portion and C-ring portion in a conventional antenna.
Figure 4 is a drawing showing the antenna of the present invention.
Figure 5 is a drawing showing the helical antenna of the present invention.
Figure 6 is a drawing showing C-ring used on the antenna of the present invention.
Figure 7 is a flow chart showing the assembly process of the antenna of the present invention.
Figure 8 is a drawing showing the Smith chart of the antenna of the present invention and a conventional antenna. Figure 9 is a drawing showing the standing-wave ratio of the antenna of the present invention and a conventional antenna.
Figure 10 is a drawing showing the moribund loss of the antenna of the present invention and a conventional antenna.
Figures- 11 to 14 are drawings showing the radiation pattern of the antenna of the present invention and a conventional antenna.
Figure 11 is a graph showing the radiation pattern of 824MHz
Figure 12 is a graph showing the radiation pattern of 849MHz
Figure 13 is a graph showing the radiation pattern of 869MHz
Figure 14 is a graph showing the radiation pattern of 894MHz
< Explanation of signals relating to the main portions of drawings >
25A: Spring 30: Ring
30 A: Elastic plate
[ Detailed description of the Invention ] I Purpose of the Invention ]
[ The field pertaining to the invention and prior art thereof]
The present invention relates an antenna for portable wireless machinery which is attached to portable wireless machinery, and therefore, transmits and receives high frequency signals of fixed frequency, and particularly to an antenna, for portable wireless machinery which by improving the structures of a spring and a c-ring built in a helical antenna, thus enhancing the band width of the antenna, despite change in frequency, allows communication quality to be less influenced, and subsequently, allows impedance to be enhanced and standing-wave ratio to become closer to the base value.
As a general, wireless machinery uses antenna to carry out wireless communication. In other words, wireless machinery supplies high frequency signal which is output from the modulation portion, thus transmits it into the air. Also, such machinery received via antenna fixed frequency signals transmitted through the air.
To enhance the features of transmission and reception of these antennas, according to the frequency range of high frequency signals transmitted and received, the impedance of antenna and transmitter-receivers are matched with each other and loss is reduced by preventing unnecessary radiation.
And a antenna used on portable wireless machinery has the following characters' A helical antenna and a road antenna are integral in such antenna and the helical antenna is operated where the road antenna is inserted and the road antenna is combined with the helical antennas in a parallel manner where the road antenna, is extended. Accordingly, the operation of antenna is mostly carried out in the road antenna.
The helical antenna of this antenna has a spring which a fixed wire is wound around it.
Figure 1 is a drawing showing a conventional antenna. In this context, signal 2- is the antenna portion.
Said antenna portion (20) is composed of
a handle (21) enabling a user to hold it by hand, where an antenna is extended and/or inserted;
an insulation portion (22);
a helical antenna (23) having a spring (25) which is operated where it combines with the body of wireless machinery (not illustrated), and which winds around the fixed wire; Ni-Ti wire (24) which in a case where the antenna is extended, parallel combines with said helical antenna (23), thereby serving as antenna.
Figure 2 is a drawing showing the helical antenna (23) in the antenna of said figure 1. As illustrated, a helical antenna (23) wherein a spring (25) at the inner part and a metal road (26) combined with the spring (25) are equipped, therefore, the lower portion of the spring (25), is wound around the metal road (26) in one (1) Turn, thus being fixed by pucker The bobbin (27) made of rubber is inserted at the inner part of said spring (25), thereby supporting the spring (25)
Figure 3 is a drawing showing + cutting portion (28) and c-ring (29) used on a conventional helical antenna On the condition that a c-ring (29) is inserted at the r outer side of the + cutting portion (28), it is inserted at and fixed to the lov r
Figure imgf000006_0001
said metal road (28):
Conventional antennas having the above-mentioned composition, provide the followings'
where a user fetches and inserts a road antenna, namely, an insulation portion (22) and the Ni-Ti wire (24), with a user holding the handle (21), the "+ cutting portion (28) " opens to the outside by the elastic force of +cutting portion and said C ring (29) It is restored to the original state and at the same time, the insulation portion
(22) and Ni-Ti wire (24) is held, inserted and fetched. However, in case of prior arts, long-term use leads the elastic force of + cutting portion (28) and C-ring to be lowered, thus, the inserted and fetched insulation portion (22) and the Ni-Ti wire (24) are not held fixed
In addition, in case of prior antenna stated above, the reflection loss is high, thus the band width which can be covered by the antenna, is narrow. Accordingly, either where the antenna is touched by a person's hand or where frequency is changed at the time of communication, the communication quality will be influenced. Since the impedance of the antenna does not reach the base value, 50Ω , the transmitter-receiver and impedance are likely to be mismatched. Producing/Outputting standing-wave ratio bigger than the basic value. So, electric power reflection is high and eiectric power loss at the antenna is great.
[ Technical problem intended to be resolved by the present invention ]
Accordingly, the purpose of the present invention to an antenna for portable machinery which enhances the band width by improving the structures of a spring and c-ring built in a helical antenna, and less influences communication quality even where the movement of frequency occur at the time of communication, and which makes the standing-wave ratio become closer to the base value, together with the enhancement of impedance.
[ The composition and effect of the invention ] According to an antenna for portable wireless machinery of the present invention for accomplishing the purpose,
An antenna for portable wireless antenna comprises:
a helical antenna wherein a metal road is fixed by being inserted and soldered at one side of a spring, and a bobbin is inserted at the inner side of the spring, and then the metal road, the bobbin and the spring are inserted and injected;
a road antenna which consists of a handle, an insulation portion and a wire and which is inserted in the middle portion of said helical antenna and is fetched,
Said spring
said spring wherein a wire to have a fixed width by being rolled, is wound and formed, a c-ring is built at the inner side of said metal road, said c-ring wherein a plurality of elastic plate (30A) is formed at the side, by press-finishing beryllim bronze to elastically support said fetched and inserted road antenna.
Also, the present invention has the following features:
A portable wireless antenna comprises:
a helical antenna wherein a metal road is fixed by being inserted and soldered at one side of a spring, and a bobbin is inserted at the inner side of the spring, and then the metal road, the bobbin and the spring are inserted and injected;
a road antenna which consists of a handle, an insulation portion and a wire and which is inserted and fetched in the middle portion of said helical antenna,
said spring wherein a wire to have a fixed width by being rolled, is wound and formed, a c-ring is built at the inner side of said metal road, said c-ring wherein a plurality of elastic plate (30A) is formed at the side, by press-finishing beryllim bronze to elastically support said fetched and inserted road antenna.
Hereinafter, the detailed explanation will be provided, with the drawings of figures 4 to 14 enclosed for preferred embodiment of an antenna for portable wireless machinery of the present invention.
Figure 4 is a drawing showing the antenna of the present invention. As illustrated therein,
an antenna portion (20) of wireless machinery consisting of a handle (21), a insulation portion (22), a helical antenna (23) and Ni-Ti wire (24),
Said spring (25A) is formed by rolling and winding a wire of fixed diameter and a plurality of elastic plate (30A) is formed inside by the press finishing of beryllium bronze by C-ring (30). Amongst drawings, signal 31, which is not explained, is a stopper and the signal is fixed to the lower portion of said Ni-Ti wire (24), thereby Ni- Ti wire (24) not being detached from the helical antenna (23)
Figure 5 is a drawing showing a helical antenna in the antenna of the present invention. As illustrated, the acrocentric portion of the metal road (26) is inserted at one end of said spring (25 A), and subsequently, the portion is fixed by being soldered, and then the bobbin (32) is inserted inside the spring (25 A)
Figure 6 is a drawing showing C-ring used on the antenna of the present invention As illustrated, the C-ring (30) of the present invention is in its entirety formed as a cylindrical body and the four elastic plates (30A) to elastically fix the antenna, at the time when the antenna is detached from and attached to the body, is i n ortrolli r rArtrjαπ ιr nrocc fir. ι phιn t m r > «->*-
The effect of the present invention is explained as follows
The antenna of the present invention is fixed by being inserted and soldered at the assembly portion, to fix the spring (25A) to the metal road (26).
And the spring (25 A) allows the outer diameter to roll about φ 0.5 wire, thereby to have fixed width, and then to wound it at fixed interval fixed times, for example, about 8.5 times
Also, heat-treated beryllium bronze is used as C-ring (30) and a plurality of elastic plate (30A) by press-finishing, is formed inside.
Figure 7 is a flow chart showing the assembly process of the antenna of the present invention. As illustrated, the C-ring (30) which is process-finished like (A), is inserted at a Roguro (33) and puckers "like (B).
The spring (25 A) is assembled and soldered at the Roguro (33) like (C).
Next, like (D), the spring (25A) inserts the bobbin (32) at the assembled Roguro (33) upwardly and downwardly.
And like (E), the assembled Roguro, is inserted and injected, thereby forming the helical antenna (23).
Thereafter, like (F), the injected helical antenna (23) inserts a nob (22) at the pipe, a stopper (31) is fixed by being inserted at and punching the lower portion of the Ni-Ti wire (24).
Since a C-ring (30) which is inserted at the inner side of the lower portion of the spring (25A), is formed as a cylindrical body having a plurality of the elastic platε (30A) at the inner side of the lateral, where the -insulation portion (22) and the Ni-Ti wire (24) are fetched, the insulation portion (22) and the Ni-Ti wire (24) are supported, being under elasticity by said elastic plate (30A), and is fixed. Also, where the insulation portion (22) and the Ni-Ti wire (24) are inserted, they are elastically fixed by said elastic plate (30A).
Figure 8 is a drawing illustrating the Smith chart of the antenna of the present invention and a conventional antenna, and Figure 9 is a drawing showing the standing- wave ratio and Figure 10 is a drawing showing the reflection loss. In this context, the position (1) and the position (2) of point (V and Δ) are the transmit frequency band, 824MHz and 849 MHz. Those of point (3) and the position (4) are the transmit frequency band, 869MHz and 894MHz.
As shown in said Figure 8, the antenna of the present invention is closer to the base value of antenna, 50 Ω than conventional antennas. As shown in Figure 9, in case of the antenna of the present invention, the standing-wave ratios in 824MHz, 849MHz, 869MHz and 894MHz are 1.4446, 1.2319, 1.3118 and 1.7946. That is to say, the standing-wave ratio of the antenna of the present invention is lower than conventional antenna, therefore, the antenna of the present invention has broader band width than conventional antennas As shown in Figure 10, it has been revealed that the reflection loss of the antenna of the present invention are -12.121dB, -17.09dB, - 20 305dB and -12 246dB in 824MHz, 849MHz, 869MHz and 894MHz respectively. It show that the reflection loss of the antenna of the present invention is lower than conventional antennas.
Figures 11 to 14 are drawings showing the radiation pattern of the antenna of the present invention and a conventional antenna and graphs illustrating the radiation pattern at 824MHz, 849MHz, 869MHz and 894MHz respectively. As shown in Figurel l, in case of the radiation values of the antenna of the present invention and conventional antenna, each maximum value in 824, is 32.18dB and -32.85db respectively in the direction of - 65 °. As shown in Figure 12, the maximum in 849MHz is -31.18db respectively in the direction of -50.01 ° and - 32.53dB in the direction of -50 °. As shown in Figure 13, the maximum value in 869MHz is -31.95dB in the direction of -49.99 ° and -32.52dB in the direction of -55
As shown in Figure 14, the maximum is -30.44dB in the direction of -50.01 and -31.11dB in the direction of -50 °. Eventually, the antenna of the present invention radiated as having higher value.
I Effect of the invention ]
As described thus far, the present invention has the following effects:
By informing a spring wherein a wire having the fixed width by roll, is wound and which is built in a helical antenna, the band width of the antenna widened, thereby being able to enhance the characteristic of the antenna. "
By pressing and finish a C-ring installed at the lower portion inside said spring with beryllium bronze and forming an elastic plate, the cost can be reduced by less than that of existing cutting processing products. And the quality turns out to be better.

Claims

[What is claimed is]
[ Claim 1 ]
An Antenna for portable wireless machinery comprises:
a helical antenna wherein a metal road is fixed by being inserted and soldered at
< one side of a spring, and a bobbin is inserted at the inner side of the spring, and then the metal road, the bobbin and the spring are inserted and injected;
a road antenna which consists of a handle, an insulation portion and a wire and which is inserted and fetched in the middle portion of said helical antenna,
said spring wherein a wire to have a fixed width by being rolled, is wound and formed, a c-ring is built at the inner side of said metal road, said c-ring wherein a plurality of elastic plates is formed at the side, by press-finishing beryllium bronze to elastically support said fetched and inserted road antenna.
[ Claim 2 ]
An antenna for portable wireless machinery comprises:
a helical antenna wherein a metal road is fixed by being inserted and soldered at one side of a spring, and a bobbin is inserted at the inner side of the spring, and then the metal road, the bobbin and the spring are inserted and injected;
a road antenna which consists of a handle, an insulation portion and a wire and which is inserted and fetched in the middle portion of said helical antenna,
A C-ring is built inside said metal road,
Said C-ring wherein a plurality of elastic plates is formed at the side, by press- finishing beryllium bronze to elastically support said fetched and inserted road antenna.
PCT/KR2000/001552 2000-12-29 2000-12-29 Antenna for portable wireless machinery WO2002054539A1 (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
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WO2004051794A1 (en) * 2002-11-29 2004-06-17 Research In Motion Limited Low profile antenna insert nut
US6891506B2 (en) 2002-06-21 2005-05-10 Research In Motion Limited Multiple-element antenna with parasitic coupler
US6950071B2 (en) 2001-04-12 2005-09-27 Research In Motion Limited Multiple-element antenna
US6980173B2 (en) 2003-07-24 2005-12-27 Research In Motion Limited Floating conductor pad for antenna performance stabilization and noise reduction
US7023387B2 (en) 2003-05-14 2006-04-04 Research In Motion Limited Antenna with multiple-band patch and slot structures
US7053842B2 (en) 2002-11-29 2006-05-30 Chao Chen Combination of tube assembly and clip for wireless antenna grounding
US7148846B2 (en) 2003-06-12 2006-12-12 Research In Motion Limited Multiple-element antenna with floating antenna element
US7190314B2 (en) 2002-11-29 2007-03-13 Research In Motion Limited Low profile antenna insert nut

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US5594457A (en) * 1995-04-21 1997-01-14 Centurion International, Inc. Retractable antenna
US5717408A (en) * 1995-12-18 1998-02-10 Centurion International, Inc. Retractable antenna for a cellular telephone
KR20000049303A (en) * 1999-05-13 2000-08-05 장응순 Portable wireless machinery antenna
KR20000049325A (en) * 1999-09-20 2000-08-05 장응순 Slim type antenna of a portable radio apparatus

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5594457A (en) * 1995-04-21 1997-01-14 Centurion International, Inc. Retractable antenna
US5717408A (en) * 1995-12-18 1998-02-10 Centurion International, Inc. Retractable antenna for a cellular telephone
KR20000049303A (en) * 1999-05-13 2000-08-05 장응순 Portable wireless machinery antenna
KR20000049325A (en) * 1999-09-20 2000-08-05 장응순 Slim type antenna of a portable radio apparatus

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6950071B2 (en) 2001-04-12 2005-09-27 Research In Motion Limited Multiple-element antenna
US7183984B2 (en) 2002-06-21 2007-02-27 Research In Motion Limited Multiple-element antenna with parasitic coupler
US6891506B2 (en) 2002-06-21 2005-05-10 Research In Motion Limited Multiple-element antenna with parasitic coupler
US7525495B2 (en) 2002-11-29 2009-04-28 Research In Motion Limited Low profile antenna insert nut
US7053842B2 (en) 2002-11-29 2006-05-30 Chao Chen Combination of tube assembly and clip for wireless antenna grounding
US7190314B2 (en) 2002-11-29 2007-03-13 Research In Motion Limited Low profile antenna insert nut
US7394434B2 (en) 2002-11-29 2008-07-01 Research In Motion Limited Combination of tube assembly and clip for wireless antenna grounding
US7403163B2 (en) 2002-11-29 2008-07-22 Research In Motion Limited Low profile antenna insert nut
CN100433450C (en) * 2002-11-29 2008-11-12 捷讯研究有限公司 Low profile antenna insert nut
WO2004051794A1 (en) * 2002-11-29 2004-06-17 Research In Motion Limited Low profile antenna insert nut
US7739784B2 (en) 2002-11-29 2010-06-22 Research In Motion Limited Method of making an antenna assembly
US8018388B2 (en) 2002-11-29 2011-09-13 Research In Motion Limited Low profile antenna insert nut
US8068060B2 (en) 2002-11-29 2011-11-29 Research In Motion Limited Combination of tube assembly and clip for wireless antenna grounding
US7023387B2 (en) 2003-05-14 2006-04-04 Research In Motion Limited Antenna with multiple-band patch and slot structures
US7148846B2 (en) 2003-06-12 2006-12-12 Research In Motion Limited Multiple-element antenna with floating antenna element
US6980173B2 (en) 2003-07-24 2005-12-27 Research In Motion Limited Floating conductor pad for antenna performance stabilization and noise reduction

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