KR101074845B1 - Small radiating coaxial cable using outer conductor made by aluminium for indoor installation - Google Patents

Small radiating coaxial cable using outer conductor made by aluminium for indoor installation Download PDF

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KR101074845B1
KR101074845B1 KR1020090122455A KR20090122455A KR101074845B1 KR 101074845 B1 KR101074845 B1 KR 101074845B1 KR 1020090122455 A KR1020090122455 A KR 1020090122455A KR 20090122455 A KR20090122455 A KR 20090122455A KR 101074845 B1 KR101074845 B1 KR 101074845B1
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coaxial cable
bad
outer conductor
insulator
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KR20110065796A (en
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최희태
강성민
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대한전선 주식회사
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    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00Communication cables or conductors
    • H01B11/18Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B1/00Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
    • H01B1/02Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
    • H01B1/023Alloys based on aluminium
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00Communication cables or conductors
    • H01B11/18Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1834Construction of the insulation between the conductors
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B11/00Communication cables or conductors
    • H01B11/18Coaxial cables; Analogous cables having more than one inner conductor within a common outer conductor
    • H01B11/1869Construction of the layers on the outer side of the outer conductor
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01BCABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B7/00Insulated conductors or cables characterised by their form
    • H01B7/17Protection against damage caused by external factors, e.g. sheaths or armouring
    • H01B7/28Protection against damage caused by moisture, corrosion, chemical attack or weather

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Abstract

본 발명은 실내매설용 세경 방사 동축케이블에 관한 것으로,The present invention relates to a narrow radial coaxial cable for indoor buried,

고주파신호를 전송하는 중심도체(11)와; 상기 중심도체(11)의 둘레면에 발포되어 절연기능을 수행하는 절연체(12); 상기 절연체(12)의 둘레면에 주름관 형태로 성형되면서 그 둘레면서 다수개의 방사슬롯(13-1)이 형성된 외부도체(13); 및 상기 외부도체(13)에 감싸져 부식을 방지하는 자켓층(14)을 포함하며; 상기 외부도체(13)를 알루미늄소재로 성형하고, 상기 외부도체(13)의 방사슬롯(13-1)들을 5.0±0.7㎜의 간격을 두고 형성함으로써; A center conductor 11 for transmitting a high frequency signal; An insulator (12) foamed on the circumferential surface of the center conductor (11) to perform an insulation function; An outer conductor 13 formed on a circumferential surface of the insulator 12 in a corrugated pipe shape and having a plurality of radiating slots 13-1 formed around the insulator 12; And a jacket layer 14 wrapped around the outer conductor 13 to prevent corrosion; Forming the outer conductor 13 by aluminum and forming the radiation slots 13-1 of the outer conductor 13 at intervals of 5.0 ± 0.7 mm;

상기 동축케이블의 외부도체를 알루미늄소재로 제조하는 것이 가능해지므로, 상기 동축케이블의 제조단가가 절감되어 경제적일 뿐만 아니라 상기 동축케이블이 경량화되어 포설작업에 따른 편리성이 향상되도록 한 것이다. Since it is possible to manufacture the outer conductor of the coaxial cable made of aluminum material, the manufacturing cost of the coaxial cable is reduced and economical, and the coaxial cable is lighter, so that the convenience of laying work is improved.

동축케이블, 중심도체, 절연체, 외부도체, 방사슬롯, 자켓층 Coaxial Cable, Center Conductor, Insulator, External Conductor, Radiation Slot, Jacket Layer

Description

실내매설용 세경 방사 동축케이블{Small radiating coaxial cable using outer conductor made by aluminium for indoor installation}Small radiating coaxial cable using outer conductor made by aluminum for indoor installation}

본 발명은 전송선로로 사용되는 동축케이블에 관한 것으로, 특히 동축케이블을 경량화함은 물론 실내 포설작업에 따른 편리성을 향상시킬 수 있도록 한 실내매설용 세경 방사 동축케이블에 관한 것이다.The present invention relates to a coaxial cable used as a transmission line, and more particularly, to a narrow coaxial cable for indoor laying to improve the convenience of indoor installation work, as well as lightweight coaxial cable.

일반적으로, 동축케이블(Coaxial cable)은 전파가 누설되지 않도록 하여 유도장애를 방지함은 물론 통과 주파수 대역에서 손실을 줄여주는 전송선로의 일종으로서, 이 동축케이블은 중심도체의 주변에 유전상수가 높은 절연체를 감싸고 이를 다시 외부도체와 자켓층을 감싸 구성한다. In general, a coaxial cable is a type of transmission line that prevents leakage of radio waves and prevents loss in the pass frequency band. This coaxial cable has a high dielectric constant around the center conductor. Wrap the insulator and then wrap it around the outer conductor and jacket layer.

여기서, 상기 외부도체는 외부간섭신호에 대한 차폐 및 케이블 내부신호의 누설을 방지하기 위한 수단으로 적층된 것으로서, 그 둘레면에 길이방향을 따라 형성된 다수개의 방사슬롯을 이용하여 전자기파의 방사가 이루어지도록 함으로써 전자기파에 의해 장애현상을 최소화한다. Here, the outer conductor is stacked as a means for shielding against the external interference signal and preventing leakage of the signal inside the cable, so that the electromagnetic wave is radiated using a plurality of radiation slots formed along the longitudinal direction on the circumferential surface thereof. This minimizes the phenomena caused by electromagnetic waves.

예컨대, 도 1에서와 같이, 동축케이블(100)은, 중심도체(110)와, 상기 중심도체(110)에 감싸지는 절연체(120), 상기 절연체(120)에 감싸지면서 그 외표면에 다수개의 방사슬롯(135)이 형성된 외부도체(130), 및 상기 외부도체(130)에 감싸지는 자켓층(140)으로 구성된다. For example, as shown in FIG. 1, the coaxial cable 100 includes a center conductor 110, an insulator 120 wrapped around the center conductor 110, and a plurality of outer surfaces of the coaxial cable 100 wrapped around the insulator 120. It consists of an outer conductor 130, the radiation slot 135 is formed, and a jacket layer 140 wrapped around the outer conductor 130.

따라서, 상기 동축케이블(100)에 신호전압을 인가하면, 상기 중심도체(110)에 의해 고주파신호가 전송됨은 물론 상기 방사슬롯(135)에 의해 전자기파의 방사가 이루어지면서 송수신되는 것이다.Therefore, when a signal voltage is applied to the coaxial cable 100, the high frequency signal is transmitted by the center conductor 110 as well as the radiation is transmitted and received by the radiation slot 135.

이때, 상기 동축케이블(100)은 상기 외부도체(130)의 소재를 가능한 도전율이 우수한 재질로 구성함으로써, 상기 동축케이블(100)을 적용한 통신장비나 전송장비를 사용하는 과정에서 전력 손실을 최소화함은 물론 신호의 감쇄 특성을 일정하게 유지시키는 것이 무엇보다도 중요하다. At this time, the coaxial cable 100 is made of a material having excellent electrical conductivity as possible by the material of the outer conductor 130, thereby minimizing power loss in the process of using the communication equipment or transmission equipment to which the coaxial cable 100 is applied. Of course, it is important to keep the signal attenuation constant constant.

그런데, 상기 외부도체(130)는 도전율이 우수하지만 가격이 비교적 비싼 구리재질로 구성한 상태이고, 상기 구리가 공기나 수분에 의한 산화에 비교적 취약한 재질이어서 상기 동축케이블의 수명을 저하시킴은 물론 상기 동축케이블의 제조단가를 증대시키는 문제점이 있었다. However, the outer conductor 130 is composed of a copper material having excellent electrical conductivity but a relatively high price, and the copper is a material that is relatively vulnerable to oxidation by air or moisture, thereby reducing the life of the coaxial cable as well as the coaxial There was a problem of increasing the manufacturing cost of the cable.

그리고, 상기 외부도체(130)의 하중이 비교적 커서 상기 동축케이블(100)의 포설 길이를 제한할 수밖에 없으므로, 상기 동축케이블(100)의 설치비용 및 작업하중이 증대됨은 물론 상기 동축케이블의 포설과정에서 굴곡이 심한 지역의 경우 설치작업이 어려운 문제점이 있었다. In addition, since the load of the outer conductor 130 is relatively large, the installation length of the coaxial cable 100 is inevitably limited, so that the installation cost and work load of the coaxial cable 100 are increased, as well as the installation process of the coaxial cable. In the case of a severe bend in the installation work was difficult.

또한, 포설 환경에 대한 세심한 고려가 없이 제작되어 방사되는 전자기파의 효율성이 낮아 케이블의 경량화 및 세경화에 어려움이 있었다.In addition, there is a difficulty in lightening and thinning the cable due to low efficiency of electromagnetic waves produced and manufactured without careful consideration of the installation environment.

이에, 본 발명은 상기한 바와 같은 문제점들을 해결하기 위하여 안출된 것으로서, 동축케이블의 소재를 변경하여 경량화하고 제조비용을 절감함은 물론 실내포설환경에 적합하고 우수한 전기적 특성의 알루미늄을 사용한 실내매설용 세경 방사 동축케이블을 제공하는 데에 그 목적이 있다. Accordingly, the present invention has been made to solve the problems described above, to reduce the manufacturing cost and reduce the manufacturing cost of the coaxial cable, as well as suitable for indoor installation environment and for indoor embedding using aluminum of excellent electrical properties The purpose is to provide a narrow radial coaxial cable.

상기한 바와 같은 목적을 달성하기 위한 본 발명은; 고주파신호를 전송하는 중심도체와; 상기 중심도체의 둘레면에 발포되어 절연기능을 수행하는 절연체; 상기 절연체의 둘레면에 주름관 형태로 성형되면서 그 둘레면서 다수개의 방사슬롯이 형성된 외부도체; 및 상기 외부도체에 감싸져 부식을 방지하는 자켓층을 포함하며; 상기 외부도체(13)가 알루미늄소재로 성형되고, 상기 방사슬롯(13-1)이 5.0±0.7㎜의 간격을 두고 형성된 것을 특징으로 한다.The present invention for achieving the above object; A center conductor for transmitting a high frequency signal; An insulator foamed on a circumferential surface of the center conductor to perform an insulation function; An outer conductor formed on a circumferential surface of the insulator in the form of a corrugated pipe and having a plurality of radiating slots formed around the insulator; And a jacket layer wrapped around the outer conductor to prevent corrosion; The outer conductor 13 is formed of an aluminum material, characterized in that the spinning slot 13-1 is formed at intervals of 5.0 ± 0.7 mm.

본 발명에 따른 동축케이블은 다음과 같은 효과가 있다. The coaxial cable according to the present invention has the following effects.

첫째, 상기 동축케이블의 외부도체를 알루미늄으로 구성함으로써 상기 케이 블의 제조단가가 절감되어 경제적임은 물론 수명이 연장된다. First, since the outer conductor of the coaxial cable is made of aluminum, the manufacturing cost of the cable is reduced and economical as well as life is extended.

둘째, 상기 동축케이블의 외부도체를 알루미늄으로 구성함으로써 상기 케이블이 경량화되어 포설작업에 따른 작업하중 및 시간이 절감된다. Second, since the outer conductor of the coaxial cable is made of aluminum, the cable is reduced in weight, thereby reducing the work load and time according to the installation work.

셋째, 상기 동축케이블이 세경 케이블이므로 발포 절연층의 외경이 작아지면서 감쇄량이 증가하게 되나 벽면이나 천정에 매설시킨 상태에서 효율적인 신호전파를 방사시키기 위해 결합손실을 특화시킬 수 있다.Third, since the coaxial cable is a narrow cable, the attenuation increases as the outer diameter of the foam insulation layer decreases, but the coupling loss can be specialized to radiate an efficient signal wave in a state of being embedded in a wall or a ceiling.

넷째, 상기 동축케이블이 대경케이블인 경우 상기 중심도체를 파이프 형태로 형성함으로써 상기 동축케이블의 제조에 따른 비용이 절감된다. Fourth, when the coaxial cable is a large diameter cable by forming the center conductor in the form of a pipe, the cost of manufacturing the coaxial cable is reduced.

이하, 본 발명에 따른 실시예를 설명하면 다음과 같다.Hereinafter, an embodiment according to the present invention will be described.

도 2는 본 발명에 따른 동축케이블의 개략적인 정단면도이고, 도 3은 본 발명에 따른 동축케이블의 개략적인 측단면도이다. 2 is a schematic front sectional view of a coaxial cable according to the present invention, and FIG. 3 is a schematic side sectional view of a coaxial cable according to the present invention.

도 2 및 도 3에서와 같이, 본 발명의 동축케이블(10)은, 케이블의 중심부에 구성되어 고주파신호를 전송하는 중심도체(11)와; 상기 중심도체(11)의 둘레면에 발포되어 절연기능을 수행하는 절연체(12); 상기 절연체(12)의 둘레면에 주름관 형태로 성형되면서 그 둘레면서 다수개의 방사슬롯(13-1)이 형성된 외부도체(13); 및 상기 외부도체(13)에 감싸져 부식을 방지하는 자켓층(14)을 포함하며; 상기 외부도체(13)가 알루미늄소재로 성형되고, 상기 방사슬롯(13-1)이 5.0±0.7㎜의 간격을 두고 형성된 것을 특징으로 한다.As shown in Figures 2 and 3, the coaxial cable 10 of the present invention, the central conductor 11 is configured in the center of the cable for transmitting a high frequency signal; An insulator (12) foamed on the circumferential surface of the center conductor (11) to perform an insulation function; An outer conductor 13 formed on a circumferential surface of the insulator 12 in a corrugated pipe shape and having a plurality of radiating slots 13-1 formed around the insulator 12; And a jacket layer 14 wrapped around the outer conductor 13 to prevent corrosion; The outer conductor 13 is formed of an aluminum material, characterized in that the spinning slot 13-1 is formed at intervals of 5.0 ± 0.7 mm.

먼저, 동축케이블(10)은, 상기 중심도체(11)와 절연체(12)와 외부도체(13)와 자켓층(14)을 순차적으로 감싸 구성한 것으로서, 특히 상기 중심도체(11)와 외부도체(13)의 소재를 변경하여 상기 케이블을 경량화하고 상기 케이블의 포설에 따른 제반 비용을 절감한 것에 특징이 있다. First, the coaxial cable 10 is formed by sequentially wrapping the center conductor 11, the insulator 12, the outer conductor 13, and the jacket layer 14, and in particular, the center conductor 11 and the outer conductor ( It is characterized in that the weight of the cable is reduced by changing the material of 13) and the overall cost of laying the cable is reduced.

그리고, 중심도체(11)는 상기 동축케이블(10)의 중심부에 구성되어 고주파신호가 전송되는 것으로서, 상기 동축케이블(10)에 신호 전압이 인가되는 과정에서 상기 고주파신호의 전송에 필요한 통로역할을 원활히 수행하도록 가능한 도전성이 우수한 소재로 성형함이 바람직하다. In addition, the center conductor 11 is configured in the center of the coaxial cable 10 to transmit a high frequency signal, and serves as a passage required for the transmission of the high frequency signal in the process of applying a signal voltage to the coaxial cable 10. It is desirable to mold the material with excellent conductivity so as to perform smoothly.

이때, 상기 중심도체(11)로는 구리피막(11-1)이 형성된 동복 알루미늄선 또는 관형태로 성형된 동파이프를 사용할 수 있다.In this case, the center conductor 11 may be a copper pipe formed in the form of a copper-clad aluminum wire or a tube formed with a copper coating (11-1).

즉, 상기 중심도체(11)는 상기 고주파전류가 흐르는 과정에서 표피효과가 발생하는 특징이 있으므로, 상기 동축케이블이 세경케이블인 경우 동복 알루미늄선이 바람직하고 상기 동축케이블이 대경케이블인 경우에는 동복 알루미늄선을 대신하여 동파이프를 사용함이 바람직하다. That is, the center conductor 11 is characterized in that the skin effect is generated in the process of the high-frequency current flow, copper wire aluminum wire is preferred when the coaxial cable is a narrow cable, copper copper aluminum when the coaxial cable is a large diameter cable. It is preferable to use copper pipes instead of wires.

그리고, 절연체(12)는 상기 중심도체(11)의 둘레면에 동심원상으로 발포되어 상기 외부도체(13)와의 절연기능을 수행하는 것으로서, 상기 중심도체(11)와 외부도체(13)의 절연기능을 수행할 뿐만 아니라 상기 중심도체(11)에 의해 발생하는 전자기파의 손상을 방지하는 기능도 수행한다. The insulator 12 is foamed concentrically on the circumferential surface of the center conductor 11 to perform an insulation function with the outer conductor 13, and insulates the center conductor 11 and the outer conductor 13. In addition to performing a function, it also performs a function of preventing damage to electromagnetic waves generated by the center conductor 11.

이때, 상기 절연체(12)의 소재로는 발포플라스틱 등과 같은 절연성 및 발포성이 우수한 재질이 바람직하지만, 그 밖에도 절연특성 및 발포특성이 우수한 고분 자 화합물이라면 사용이 가능하다. At this time, the material of the insulator 12 is preferably a material having excellent insulation and foaming properties, such as foamed plastic, but can be used as long as the polymer compound having excellent insulation and foaming properties.

또한, 상기 절연체(12)의 둘레면에 코팅액(12-1)을 도포함으로써, 상기 외부도체(13)와의 접착에 의한 밀착력을 향상시키고 상기 자켓층(14)에 의한 습기가 유입되는 것을 차단함이 바람직하다.In addition, by applying the coating liquid 12-1 on the circumferential surface of the insulator 12, it improves the adhesion by the adhesion to the outer conductor 13, and blocks the inflow of moisture by the jacket layer (14). This is preferred.

그리고, 외부도체(13)는, 상기 절연체(12)의 둘레면에 감싸져 전자기파의 방사기능을 수행하는 것으로서, 그 소재로는 비교적 경량이면서도 도전율이 우수한 알루미늄 또는 알루미늄합금을 사용함이 바람직하다.In addition, the outer conductor 13 is wrapped around the circumferential surface of the insulator 12 to perform radiation of electromagnetic waves, and as the material, it is preferable to use aluminum or an aluminum alloy, which is relatively lightweight and has excellent electrical conductivity.

특히, 외부도체(13)의 구성과정에서, 알루미늄 테이프를 파이프 형태로 권취하고 그 접합부분을 용접하여 주름관으로 성형한 후 상기 주름관의 돌출부분에 상기 방사슬롯(13-1)을 형성할 수도 있다.In particular, in the configuration of the outer conductor 13, the aluminum tape is wound in the form of a pipe, the joint portion is welded to form a corrugated pipe, and then the radiation slot 13-1 may be formed on the protruding portion of the corrugated pipe. .

또한, 상기 방사슬롯(13-1)은 상기 중심도체(11)에 신호 전압이 인가되는 경우 발생하는 전자기파를 방사하는 것으로서, 그 형성위치는 상기 외부도체(13)의 외표면 바람직하게는 상기 주름관의 돌출부분(산부분) 양쪽에 180°의 간격을 두고 세팅되도록 형성함이 바람직하다. In addition, the radiation slot 13-1 radiates electromagnetic waves generated when a signal voltage is applied to the center conductor 11, and the formation position is an outer surface of the outer conductor 13, preferably the corrugated pipe. It is preferable that the protrusions (mountains) are formed to be set at intervals of 180 ° on both sides.

이때, 상기 외부도체(13)는 알루미늄으로 성형되어 상기 구리에 비해 도전율이 상태적으로 저하된 상태이므로, 상기 절연체(12)의 발포도나 두께를 조절하여 상기 도전율을 보상함이 바람직하다.In this case, since the outer conductor 13 is formed of aluminum and has a lower state of conductivity than the copper, it is preferable to compensate for the conductivity by controlling the degree of foaming or thickness of the insulator 12.

특히, 상기 외부도체(13)가 알루미늄으로 성형되어 도전율이 저하되었다면 상기 절연체(12)의 두께를 조절하거나 또는 상기 방사슬롯(13-1)의 크기 및 개수를 조절하는 방법을 이용할 수도 있다. In particular, when the outer conductor 13 is formed of aluminum to lower the conductivity, a method of controlling the thickness of the insulator 12 or the size and number of the radiation slots 13-1 may be used.

그리고, 자켓층(14)은 상기 외부도체(13)의 둘레면에 감싸진 상태에서 상기 구성요소(11,12,13)들을 전체적으로 보호하는 것으로서, 플라스틱이나 고무소재와 같이 부식성이나 내식성이 우수하면서도 외부하중을 흡수할 정도의 쿠션력을 갖는 소재라면 사용이 가능함은 당연하다.In addition, the jacket layer 14 is to protect the components (11, 12, 13) as a whole while being wrapped around the outer surface of the outer conductor 13, while having excellent corrosion resistance and corrosion resistance like plastic or rubber material Naturally, the material can be used as long as it has a cushioning force to absorb external load.

한편, 실시예 1 내지 실시예 4는 상기 방사슬롯(13-1)의 면적에 따른 감쇄량과 결합손실을 측정한 것으로서, 상기 방사슬롯(13-1)의 크기와 간격 및 슬롯을 편차를 두어 다양하게 제작하여 하기의 표와 같은 측정결과를 얻었으며, 특히 임피던스가 표준규격치인 50±2Ω을 만족함을 알 수 있었다.Meanwhile, Examples 1 to 4 measure the attenuation amount and the coupling loss according to the area of the radiation slot 13-1, and vary the size, spacing, and slot of the radiation slot 13-1. The measurement results were obtained as shown in the following table, and in particular, the impedance was found to satisfy the standard value of 50 ± 2Ω.

여기서, 본원 실시예1 내지 4에서 각각 사용된 상기 동축케이블(10)의 규격은 상기 중심도체(11)의 외경이 4.8±0.1㎜이었고, 상기 절연체(12)의 외경이 12.3±0.2㎜이었으며, 상기 외부도체(13)의 외경이 13.8±0.2㎜이었고, 상기 자켓층(14)의 외경이 16.5±0.5㎜이었다. Here, the standard of the coaxial cable 10 used in Examples 1 to 4 of the present application was the outer diameter of the center conductor 11 was 4.8 ± 0.1 mm, the outer diameter of the insulator 12 was 12.3 ± 0.2 mm, The outer diameter of the outer conductor 13 was 13.8 ± 0.2 mm, and the outer diameter of the jacket layer 14 was 16.5 ± 0.5 mm.

이때, 상기 중심도체(11)의 외경이 4.7㎜ 이하인 경우 상기 임피던스가 규정치를 초과하는 반면, 외경이 4.9㎜ 이상인 경우 상기 임피던스가 규정치를 미달하므로, 그 외경을 4.8±0.1㎜의 범위로 한정하였다.In this case, when the outer diameter of the center conductor 11 is 4.7 mm or less, the impedance exceeds the prescribed value, whereas when the outer diameter is 4.9 mm or more, the impedance is less than the prescribed value, so the outer diameter is limited to the range of 4.8 ± 0.1 mm. .

또한, 상기 절연체(12)의 외경이 12.5㎜ 이상인 경우 상기 외부도체(13)와의 접촉면적이 커져 감쇄량이 저하되는 반면, 외경이 12.1㎜ 이하인 경우 상기 외부도체(13)와 접촉면적이 작아져 절연기능이 저하되고 누출될 우려가 있으므로, 그 외경을 12.3±0.2㎜로 한정하였다. In addition, when the outer diameter of the insulator 12 is 12.5 mm or more, the contact area with the outer conductor 13 is increased to reduce the attenuation amount, whereas when the outer diameter is 12.1 mm or less, the contact area with the outer conductor 13 is reduced and the insulation is reduced. Since the function may deteriorate and leak, the outer diameter is limited to 12.3 ± 0.2 mm.

그리고, 상기 외부도체(13)의 둘레면에 형성된 상기 방사슬롯(13-1)의 면적 을 각각 10.2㎟, 11.3㎟, 12.1㎟, 13.2㎟로 형성한 결과, 표 1 내지 4에서와 같이 감쇄량과 결합손실이 양호한 상태이므로, 상기 방사슬롯(13-1)의 크기를 조절하여 전기적 특성을 향상시킬 수 있음을 알 수 있다.As a result of forming the area of the radiation slot 13-1 formed on the circumferential surface of the outer conductor 13 to 10.2 mm 2, 11.3 mm 2, 12.1 mm 2, and 13.2 mm 2, respectively, as shown in Tables 1 to 4, Since the coupling loss is in a good state, it can be seen that the electrical characteristics can be improved by adjusting the size of the radiation slot 13-1.

[표 1] TABLE 1

실시예 1Example 1 슬롯규격Slot specification 기준슬롯크기Standard slot size 10.2㎟10.2mm2 편차비율
(주방사지점:반대방향)
Deviation Rate
(Kitchen branch: opposite direction)
0.7:10.7: 1 1:11: 1 1.2:11.2: 1 1.4:11.4: 1 1.5:11.5: 1






I'm
group
enemy
Scoop
castle

감쇄량
(dB/100m)

Attenuation
(dB / 100m)

150 MHz 150 MHz 2.4
(양호)
2.4
(Good)
3.0
(양호)
3.0
(Good)
3.1
(양호)
3.1
(Good)
3.2
(양호)
3.2
(Good)
3.5
(양호)
3.5
(Good)
450 MHz 450 MHz 7.4
(양호)
7.4
(Good)
6.1
(양호)
6.1
(Good)
6.3
(양호)
6.3
(Good)
6.8
(양호)
6.8
(Good)
7.5
(양호)
7.5
(Good)
1800 MHz1800 MHz 13.4
(양호)
13.4
(Good)
15.3(양호)15.3 (good) 15.6
(양호)
15.6
(Good)
16.5
(양호)
16.5
(Good)
17.1
(양호)
17.1
(Good)
2400 MHz2400 MHz 15.6
(양호)
15.6
(Good)
17.2(양호)17.2 (good) 17.5
(양호)
17.5
(Good)
18.7
(양호)
18.7
(Good)
21.2
(불량)
21.2
(Bad)
결합손실
(dB)

Coupling loss
(dB)

140 MHz 140 MHz 84(불량)84 (bad) 82(불량)82 (bad) 81(불량)81 (bad) 79(양호)79 (good) 78(양호)78 (good)
450 MHz 450 MHz 88(불량)88 (bad) 86(불량)86 (bad) 85(불량)85 (bad) 83(불량)83 (bad) 82(불량)82 (bad) 1800 MHz1800 MHz 95(불량)95 (bad) 88(불량)88 (bad) 87(불량)87 (bad) 85(불량)85 (bad) 85(불량)85 (bad) 2400 MHz2400 MHz 95(불량)95 (bad) 88(불량)88 (bad) 87(불량)87 (bad) 86(불량)86 (bad) 87(불량)87 (bad)

[표 2] TABLE 2

실시예 2Example 2 슬롯규격Slot specification 기준슬롯크기Standard slot size 11.3㎟11.3㎡ 편차비율
(주방사지점:반대방향)
Deviation Rate
(Kitchen branch: opposite direction)
0.7:10.7: 1 1:11: 1 1.2:11.2: 1 1.4:11.4: 1 1.5:11.5: 1






I'm
group
enemy
Scoop
castle

감쇄량
(dB/100m)

Attenuation
(dB / 100m)

150 MHz 150 MHz 2.7
(양호)
2.7
(Good)
3.1
(양호)
3.1
(Good)
3.5
(양호)
3.5
(Good)
3.3
(양호)
3.3
(Good)
3.7
(양호)
3.7
(Good)
450 MHz 450 MHz 7.8
(양호)
7.8
(Good)
6.8
(양호)
6.8
(Good)
7.7
(양호)
7.7
(Good)
8.0
(양호)
8.0
(Good)
8.9
(양호)
8.9
(Good)
1800 MHz1800 MHz 14.1
(양호)
14.1
(Good)
16.0
(양호)
16.0
(Good)
16.2
(양호)
16.2
(Good)
16.5
(양호)
16.5
(Good)
19.1
(불량)
19.1
(Bad)
2400 MHz2400 MHz 15.8
(양호)
15.8
(Good)
17.9(양호)17.9 (good) 17.8
(양호)
17.8
(Good)
18.2
(양호)
18.2
(Good)
21.2
(불량)
21.2
(Bad)
결합손실
(dB)

Coupling loss
(dB)

140 MHz 140 MHz 82(불량)82 (bad) 81(불량)81 (bad) 78(양호)78 (good) 72(양호)72 (good) 68(양호)68 (good)
450 MHz 450 MHz 85(불량)85 (bad) 83(불량)83 (bad) 79(양호)79 (good) 74(양호)74 (good) 72(양호)72 (good) 1800 MHz1800 MHz 94(불량)94 (bad) 83(불량)83 (bad) 81(불량)81 (bad) 81(불량)81 (bad) 79(불량)79 (bad) 2400 MHz2400 MHz 95(불량)95 (bad) 88(불량)88 (bad) 85(불량)85 (bad) 83(불량)83 (bad) 81(불량)81 (bad)

[표 3] [Table 3]

실시예 3Example 3 슬롯규격Slot specification 기준슬롯크기Standard slot size 12.1㎟12.1㎡ 편차비율
(주방사지점:반대방향)
Deviation Rate
(Kitchen branch: opposite direction)
0.7:10.7: 1 1:11: 1 1.2:11.2: 1 1.4:11.4: 1 1.5:11.5: 1






I'm
group
enemy
Scoop
castle

감쇄량
(dB/100m)

Attenuation
(dB / 100m)

150 MHz 150 MHz 2.9(양호) 2.9 (good) 3.1
(양호)
3.1
(Good)
3.3
(양호)
3.3
(Good)
3.4
(양호)
3.4
(Good)
3.8
(양호)
3.8
(Good)
450 MHz 450 MHz 8.1(양호) 8.1 (good) 8.4
(양호)
8.4
(Good)
8.6
(양호)
8.6
(Good)
8.5
(양호)
8.5
(Good)
9.0
(양호)
9.0
(Good)
1800 MHz1800 MHz 16.5(양호)16.5 (good) 16.9
(양호)
16.9
(Good)
17.2
(양호)
17.2
(Good)
17.3
(양호)
17.3
(Good)
18.9
(불량)
18.9
(Bad)
2400 MHz2400 MHz 17.8(양호)17.8 (good) 18.0
(양호)
18.0
(Good)
18.7
(양호)
18.7
(Good)
18.9
(양호)
18.9
(Good)
23.2
(불량)
23.2
(Bad)
결합손실
(dB)

Coupling loss
(dB)

140 MHz 140 MHz 81(불량)81 (bad) 75(양호)75 (good) 74(양호)74 (good) 62(양호)62 (good) 73(양호)73 (good)
450 MHz 450 MHz 82(불량)82 (bad) 76(양호)76 (good) 74(양호)74 (good) 64(양호)64 (good) 81(불량)81 (bad) 1800 MHz1800 MHz 86(불량)86 (bad) 81(불량)81 (bad) 81(불량)81 (bad) 71(양호)71 (good) 78(양호)78 (good) 2400 MHz2400 MHz 89(불량)89 (bad) 81(불량)81 (bad) 82(불량)82 (bad) 74(양호)74 (good) 87(불량)87 (bad)

[표 4] [Table 4]

실시예 4Example 4 슬롯규격Slot specification 기준슬롯크기Standard slot size 13.2㎟13.2㎡ 편차비율
(주방사지점:반대방향)
Deviation Rate
(Kitchen branch: opposite direction)
0.7:10.7: 1 1:11: 1 1.2:11.2: 1 1.4:11.4: 1 1.5:11.5: 1






I'm
group
enemy
Scoop
castle

감쇄량
(dB/100m)

Attenuation
(dB / 100m)

150 MHz 150 MHz 2.9(양호) 2.9 (good) 3.5
(양호)
3.5
(Good)
3.8
(양호)
3.8
(Good)
5.1
(불량
5.1
(Bad
5.6
(불량)
5.6
(Bad)
450 MHz 450 MHz 8.3(양호) 8.3 (good) 8.4
(양호)
8.4
(Good)
9.4
(불량)
9.4
(Bad)
10.1
(불량)
10.1
(Bad)
13.3
(불량)
13.3
(Bad)
1800 MHz1800 MHz 16.8(양호)16.8 (good) 17.2
(양호)
17.2
(Good)
21.1
(불량)
21.1
(Bad)
25.3
(불량)
25.3
(Bad)
26.7
(불량)
26.7
(Bad)
2400 MHz2400 MHz 18.2(양호)18.2 (good) 18.6
(양호)
18.6
(Good)
25.0
(불량)
25.0
(Bad)
27.3
(불량)
27.3
(Bad)
30.1
(불량)
30.1
(Bad)
결합손실
(dB)

Coupling loss
(dB)

140 MHz 140 MHz 71(양호)71 (good) 75(양호)75 (good) 81(불량)81 (bad) 83(불량)83 (bad) 85(불량)85 (bad)
450 MHz 450 MHz 73(양호)73 (good) 75(양호)75 (good) 83(불량)83 (bad) 83(불량)83 (bad) 85(불량)85 (bad) 1800 MHz1800 MHz 81(불량)81 (bad) 76(양호)76 (good) 81(불량)81 (bad) 85(불량)85 (bad) 85(불량)85 (bad) 2400 MHz2400 MHz 95(불량)95 (bad) 78(양호)78 (good) 85(불량)85 (bad) 87(불량)87 (bad) 83(불량)83 (bad)

한편, 상기 방사슬롯(13-1)의 면적이 12.3㎟ 이상인 경우 상기 동축케이블이 굴곡되는 과정에서 파손의 우려가 있는 반면, 면적이 11.9㎟ 이하인 경우 감쇄량은 작아지지만 결합손실이 증가하여 원하는 전파전달특성을 얻기 어려우므로, 그 면적 을 12.1±0.2㎟로 한정하였다. On the other hand, if the area of the radiation slot 13-1 is 12.3 mm 2 or more, there is a risk of breakage in the process of bending the coaxial cable, while if the area is 11.9 mm 2 or less, the attenuation amount is small, but the coupling loss increases, so that desired propagation is carried out. Since the characteristics were difficult to obtain, the area was limited to 12.1 ± 0.2 mm 2.

또한, 실시예 1 내지 4의 결과에 의해, 상기 방사슬롯(13-1)들간의 간격을 5.0±0.7㎜의 범위로 세팅함이 바람직함을 알 수 있었고, 그 이유는 상기 결합손실과 상기 감쇄량에 대한 전기적 특성과 기계적 특성을 동시에 만족할 수 있는 간격이기 때문이다.In addition, it can be seen from the results of Examples 1 to 4 that the interval between the radiation slots 13-1 is preferably set in a range of 5.0 ± 0.7 mm, because the coupling loss and the attenuation amount are This is because it is an interval that can satisfy both electrical and mechanical properties.

즉, 방사슬롯(13-1)간의 간격이 4.3㎜ 이하인 경우 결합손실이 감소하지만 감쇄량이 증가하는 반면, 간격이 5.7㎜ 이상인 경우 감쇄량이 감소하지만 결합손실이 증가하므로, 상기 방사슬롯(13-1)의 간격이 5.0±0.7㎜의 범위를 벗어나는 경우 상기 임피던스나 감쇄량이나 결합손실 중 적어도 어느 하나가 실시예1 내지 4와 같이 불량이 발생하는 것을 알 수 있기 때문이다.That is, when the spacing between the radiating slots 13-1 is less than or equal to 4.3 mm, the coupling loss decreases but the attenuation increases, whereas when the spacing is more than 5.7 mm, the attenuation decreases but the coupling loss increases. This is because, when the interval of) is outside the range of 5.0 ± 0.7 mm, at least one of the impedance, the attenuation amount, and the coupling loss occurs as in Examples 1 to 4.

또한, 상기 동축케이블(10)에 상기 방사슬롯(13-1)을 형성하는 과정에서, 주방사지점에 위치하는 방사슬롯(A)과, 상기 주방사지점의 반대방향에 위치하는 방사슬롯(B)을 면적비로 1.4±0.05:1의 비율로 형성한 결과, 표 1 내지 4에서와 같이 상기 감쇄량 및 결합손실이 대체로 양호함을 알 수 있었다.In addition, in the process of forming the radiation slot (13-1) in the coaxial cable 10, the radiation slot (A) located in the kitchen branch and the radiation slot (B) located in the opposite direction of the kitchen branch ) Was formed at an area ratio of 1.4 ± 0.05: 1, and as shown in Tables 1 to 4, the attenuation amount and the coupling loss were generally good.

이하, 본 발명에 따른 작용을 설명하면 다음과 같다. Hereinafter, the operation according to the present invention will be described.

먼저, 상기 동축케이블(10)을 구성하려는 경우, 상기 중심도체(11)의 소재를 케이블직경에 따라 동복 알루미늄선이나 동파이프로 형성하고 상기 중심도체(11)에 상기 절연체(12)를 발포하여 형성한다. First, when the coaxial cable 10 is to be formed, the material of the center conductor 11 is formed of copper-clad aluminum wire or copper pipe according to the cable diameter, and the insulator 12 is foamed on the center conductor 11. Form.

그런 다음, 상기 외부도체(13)에 180°방향으로 다수개의 방사슬롯(13-1)들 형성한 다음, 상기 절연체(12)에 상기 외부도체(13)와 자켓층(14)을 순차적으로 감싸 상기 동축케이블(10)을 제조한다. Thereafter, a plurality of radiation slots 13-1 are formed on the outer conductor 13 in a 180 ° direction, and then the outer conductor 13 and the jacket layer 14 are sequentially wrapped on the insulator 12. The coaxial cable 10 is manufactured.

이렇게 하면, 상기 동축케이블(10)에 신호 전압이 인가되는 경우, 상기 중심도체(11)에 의해 고주파신호가 전송됨은 물론 상기 외부도체(13)의 방사슬롯(13-1)에 의해 전자기파가 방사되는 것이다. In this case, when a signal voltage is applied to the coaxial cable 10, high frequency signals are transmitted by the center conductor 11 as well as electromagnetic waves are radiated by the radiation slot 13-1 of the outer conductor 13. Will be.

게다가, 상기 외부도체(13)가 알루미늄소재로 성형된 상태로서 종래 구리의 경우보다 경량화된 상태이므로, 상기 동축케이블(10)의 포설작업에 따른 편리성이 향상됨은 물론 제조비가 절감된다. In addition, since the outer conductor 13 is formed of an aluminum material and is lighter than conventional copper, the convenience of the installation of the coaxial cable 10 is improved as well as the manufacturing cost is reduced.

이상에서와 같이 본 발명은 비록 한정된 실시예 및 도면에 의해 설명되었으나, 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 특허청구범위가 해석되어야 할 것이며, 특히 특허청구범위의 균등범위 내에서 다양한 수정 및 변형이 가능해지는 것은 당연한 것이다. As described above, although the present invention has been described by way of limited embodiments and drawings, the claims should be interpreted by those skilled in the art to which the present invention pertains, in particular, within the equivalent scope of the claims. Naturally, various modifications and variations are possible in the art.

도 1은 종래기술에 따른 동축케이블의 사시도,1 is a perspective view of a coaxial cable according to the prior art,

도 2는 본 발명에 따른 동축케이블의 정단면도,2 is a front sectional view of a coaxial cable according to the present invention;

도 3은 본 발명에 따른 동축케이블의 측단면도이다.3 is a side cross-sectional view of a coaxial cable according to the present invention.

* 도면 중 주요부분에 대한 부호의 설명 *Explanation of symbols on the main parts of the drawings

10 : 동축케이블 11 : 중심도체10: coaxial cable 11: center conductor

11-1 : 구리피막 12 : 절연체11-1: Copper film 12: Insulator

12-1 : 코팅액 13 : 외부도체 13-1 : 방사슬롯 14 : 자켓층 12-1: Coating liquid 13: Outer conductor 13-1: Radiation slot 14: Jacket layer

Claims (8)

고주파신호를 전송하는 중심도체(11)와; 상기 중심도체(11)의 둘레면에 발포되어 절연기능을 수행하는 절연체(12); 상기 절연체(12)의 둘레면에 감싸지면서 그 둘레면에 다수개의 방사슬롯(13-1)이 형성된 외부도체(13); 및 상기 외부도체(13)에 감싸져 부식을 방지하는 자켓층(14); A center conductor 11 for transmitting a high frequency signal; An insulator (12) foamed on the circumferential surface of the center conductor (11) to perform an insulation function; An outer conductor 13 wrapped around the circumferential surface of the insulator 12 and having a plurality of radiation slots 13-1 formed on the circumferential surface thereof; And a jacket layer 14 wrapped around the outer conductor 13 to prevent corrosion. 을 포함하며; It includes; 상기 외부도체(13)가 알루미늄소재로 성형되면서 상기 방사슬롯(13-1)이 5.0±0.7㎜의 간격을 두고 형성되고, As the outer conductor 13 is formed of an aluminum material, the radiation slot 13-1 is formed at an interval of 5.0 ± 0.7 mm, 상기 중심도체(11)의 외경이 4.8±0.1㎜이며, The outer diameter of the center conductor 11 is 4.8 ± 0.1 mm, 상기 절연체(12)의 외경이 12.3±0.2㎜이고, The outer diameter of the insulator 12 is 12.3 ± 0.2 mm, 상기 방사슬롯(13-1)은 면적이 12.1±0.2㎟이면서, 주방사지점에 위치하는 방사슬롯(A)과 상기 주방사지점의 반대방향에 위치하는 방사슬롯(B)의 면적비가 1.4±0.05:1인 것을 특징으로 하는 실내매설용 세경 방사 동축케이블. The radiation slot 13-1 has an area of 12.1 ± 0.2 mm2 and an area ratio of the radiation slot A located at the kitchen branch and the radiation slot B located at the opposite direction of the kitchen branch is 1.4 ± 0.05. A narrow-length radial coaxial cable for indoor laying, characterized in that: 1. 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete 삭제delete
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KR20140069547A (en) * 2012-11-29 2014-06-10 엘에스전선 주식회사 Leaky Coaxial Cable with Enhanced Flexural Properties and Manufacturing Method thereof
CN103606415A (en) * 2013-11-25 2014-02-26 浙江德通科技有限公司 Light low-attenuation wrinkle coaxial cable
US20170133130A1 (en) * 2015-11-05 2017-05-11 Commscope Technologies Llc Coaxial cable with thin corrugated outer conductor and method of forming same
EP3828997A1 (en) * 2019-11-27 2021-06-02 Prysmian S.p.A. Radiating coaxial cable

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KR100817981B1 (en) * 2006-11-20 2008-03-31 엘에스전선 주식회사 A broadband leaky coaxial cable

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