TWI669723B - Transmission-signal cable and manufacturing method thereof - Google Patents

Abstract

A cable for transmitting a signal, comprising a cable body having an inner conductor and an outer conductor The outer conductor is coated on the outer circumference of the inner conductor and insulated from the inner conductor. The cable body has a signal transmitting section, and the two ends of the signal transmitting section respectively have an adapter portion, and the signal transmitting section has a switching end Connecting the inner conductor of the cable body to the outer conductor of the signal transmitting section and connecting the outer conductor of the cable body to the inner conductor of the signal transmitting section, and the connecting portion at the other end of the signal transmitting section is connected to the signal transmitting The outer conductor of the segment is connected to the inner conductor of the cable body and connects the inner conductor of the signal transmitting segment to the outer conductor of the cable body; and a characteristic load is mounted at the extreme end of the cable body.

Description

Cable for transmitting signal and manufacturing method thereof

The invention relates to cables, and more particularly to a cable capable of transmitting signals.

Leaky coaxial cable or Radiating cable, comprising an inner conductor and an outer conductor with a plurality of slots. The inner conductor is insulated and covered by the outer conductor and is a path for transmitting radio frequency (RF) signals on the cable. The portion of the outer conductor that is not provided with the slot will shield the radiation of the radio frequency signal, and the slot of the outer conductor becomes the radio frequency. The transmitting point of the signal is used to radiate the RF signal. Therefore, bleed-through coaxial cables are widely used in areas where railway signals, such as railway tunnels, MRT stations, mines, airports, or underground buildings, are difficult to propagate.

However, the number and shape of the slot on the outer conductor of the bleed coaxial cable and the distribution pattern between the plurality of slots are related to the emission area of the RF signal, and affect the wavelength, power and signal emission of the RF signal. The electromagnetic wave characteristics are such that the RF signal emitted by the bleed coaxial cable cannot meet certain requirements (for example, the radio frequency identification (RFID) must be sufficient for the RF signal power and the amount of the signal to read the chip).

Therefore, in order to solve the above problems, an object of the present invention is to provide a cable for improving the performance of radio frequency signal transmission.

The technical means for solving the problems of the prior art is to provide a cable for transmitting signals, comprising a cable body having an inner conductor and an outer conductor, wherein the outer conductor is coated on the inner conductor The outer circumference of the cable body is connected to a signal source for transmitting a signal to the inner conductor and the cable body has a signal transmitting section a connecting portion, the connecting portion at one end of the signal transmitting portion connects the inner conductor of the cable body to the outer conductor of the signal transmitting portion and connects the outer conductor of the cable body to the inner conductor of the signal transmitting portion, so that the identification The signal is transmitted from the inner conductor of the cable body to the outer conductor of the signal transmitting section to radiate to the outside, and the other end of the signal transmitting section is connected to the outer conductor of the signal transmitting section to the cable body. The inner conductor connects the inner conductor of the signal transmitting section to the outer conductor of the cable body, so that the identification signal is switched from the outer conductor of the signal transmitting section to the inner conductor of the cable body. Signal transmission; and a characteristic of the load, the other end of the cable is attached to the body.

In an embodiment of the invention, a cable for transmitting a signal is provided, wherein an inner conductor of the cable body is soldered to an outer conductor of the signal transmitting section, and an outer conductor of the cable body is soldered to the signal transmitting section. Inner conductor.

In an embodiment of the invention, a cable for transmitting a signal is provided, wherein the adapter is an adapter circuit board, and the inner conductor of the cable body is connected to the outer conductor of the signal transmitting section, and the connection is The outer conductor of the cable body is to the inner conductor of the signal transmitting section.

In an embodiment of the invention, a cable for transmitting a signal is provided, wherein the cable body and the signal transmitting section are connected to the transit circuit board through a high frequency connector.

In an embodiment of the invention, a cable for transmitting a signal is provided, wherein the characteristic load is a characteristic resistance.

The technical means for solving the problems of the prior art is to provide a method for manufacturing a cable for transmitting signals, comprising the steps of: preparing a cable material and preparing a cable body and a characteristic load, wherein the cable The wire body has an inner conductor and an outer conductor, and the outer conductor package Covering the outer circumference of the inner conductor and insulated from the inner conductor; the signal source connecting step, connecting one end of the cable body to a signal source and transmitting an identification signal to the inner conductor; the first switching step of the signal, through the cable An adapter disposed on the body connects the inner conductor of the cable body to the outer conductor of a signal transmitting section of the cable body and connects the outer conductor of the cable body to the inner conductor of the signal transmitting section, so that The identification signal is switched from the inner conductor of the cable body to the outer conductor of the signal transmitting section and radiated to the outside; the second switching step of the signal is connected through another adapter provided by the cable body. The outer conductor of the signal transmitting section is connected to the inner conductor of the cable body and connects the inner conductor of the signal transmitting section to the outer conductor of the cable body, so that the identification signal is switched by the outer conductor of the signal transmitting section to the signal transmission path to Signal transmission of the inner conductor of the cable body; and a characteristic load installation step of mounting the characteristic load on the other end of the cable body.

The cable for transmitting signals and the method of manufacturing the same according to embodiments of the present invention have the following effects. The cable for transmitting a signal according to the embodiment of the present invention, through the adapter, achieves switching of the identification signal between the inner conductor of the cable body and the outer conductor of the signal transmitting section, and the signal transmitting section is The outer conductor radiates the identification signal to the outside to improve the amount of RF signal transmission and power to perform certain required communication operations (for example, radio frequency identification operation).

100‧‧‧ cable

1‧‧‧ cable body

1A‧‧‧ signal launch section

11, 11A‧‧‧ inner conductor

12, 12A‧‧‧ outer conductor

13A, 14A‧‧‧Transfer Department

2‧‧‧ Characteristic load

3‧‧‧Transfer board

4‧‧‧High frequency connector

N1‧‧‧Insulation

N2‧‧‧Insulated outer skin

P1‧‧‧ Cable material preparation steps

P2‧‧‧ source connection step

P3‧‧‧ signal first switching step

P4‧‧‧ signal second switching step

P5‧‧‧ Characteristic load installation steps

RS‧‧‧ identification signal

S‧‧‧ signal source

1 is a schematic view showing the appearance of a cable for transmitting signals according to an embodiment of the present invention; FIG. 2 is a cross-sectional view showing a transverse cross section of a cable body according to an embodiment of the present invention; A longitudinal cross-sectional view of a cable for transmitting signals in accordance with an embodiment of the present invention; and FIG. 4 is a flow chart showing a method of fabricating a cable for transmitting signals in accordance with an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described based on Figs. 1 to 4 . This description is not intended to limit the embodiments of the invention, but is an embodiment of the invention.

Referring to FIGS. 1 to 3, a cable 100 for transmitting signals includes a cable body 1 and a characteristic load 2. The cable body 1 has an inner conductor 11 and an outer conductor 12, wherein the outer conductor 12 covers the outer circumference of the inner conductor 11 and is insulated from the inner conductor 11. One end of the cable body 1 is connected to a signal source S, and an identification signal RS is transmitted to the inner conductor 11 and the cable body 1 has a signal transmitting section 1A. Each of the two ends of the signal transmitting section 1A has an adapter portion 13A, 14A. The adapter portion 13A at one end of the signal transmitting section 1A connects the inner conductor 11 of the cable body 1 to the outer conductor 12A of the signal transmitting section 1A. Connecting the outer conductor 12 of the cable body 1 to the inner conductor 11A of the signal transmitting section 1A, so that the identification signal RS is switched from the inner conductor 11 of the cable body 1 to the outer conductor of the signal transmitting section 1A. 12A is radiated to the outside; and the adapter portion 14A at the other end of the signal transmitting section 1A is connected to the outer conductor 12A of the signal transmitting section 1A to the inner conductor 11 of the cable body 1 and is connected to the inner conductor of the signal transmitting section 1A. 11A to the outer conductor 12 of the cable body 1, and the identification signal RS is switched by the outer conductor 12A of the signal transmitting section 1A to the signal transmission path to the inner conductor 11 of the cable body 1 for signal transmission.

As shown in FIG. 2, specifically, the outer conductor 12 is electrically insulated from the outer periphery of the inner conductor 11 through the insulating layer N1, and the outer peripheral surface of the outer conductor 12 is further covered with an insulating sheath N2 to achieve The outer conductor 12 is insulated and protects the cable body 1. The outer conductor 12 of the cable body 1 shields the radiation of the identification signal RS on the inner conductor 11 and prevents external noise from interfering with the identification signal RS to ensure the transmission of the identification signal RS.

As shown in Fig. 1, the characteristic load 2 is mounted on the other end of the cable body 1 to maintain the transmission quality of the identification signal RS. In an embodiment of the invention, the characteristic load 2 is a characteristic resistance (or Called terminal resistance). Of course, the characteristic load 2 can also be composed of a capacitor, an inductor, a transformer or a voltage regulator.

For example, at the adapter portions 13A, 14A of the signal transmitting section 1A, the inner conductor 11 of the cable body 1 is soldered to the outer conductor 12A of the signal transmitting section 1A, and the outer conductor 12 of the cable body 1 is Soldered to the inner conductor 11A of the signal transmitting section 1A.

In the present invention, the technical means for connecting the cable body 1 to the signal transmitting section 1A is not limited to welding. As shown in FIG. 1, when the adapter portion 13A is an adapter circuit board 3, the present invention connects the inner conductor 11 of the cable body 1 to the outer conductor of the signal transmitting section 1A through the adapter circuit board 3. 12A, and connecting the outer conductor 12 of the cable body 1 to the inner conductor 11A of the signal transmitting section 1A. Further, the cable body 1 and the signal transmitting section 1A are connected to the adapter circuit board 3 through the high frequency connector 4 to ensure that the identification signal RS is switched between the cable body 1 and the signal transmitting section 1A. Stability.

Referring to FIG. 4, a method for manufacturing a cable 100 for transmitting signals includes the following steps: a cable material preparation step P1, preparing a cable body 1 and a characteristic load 2, wherein the cable body 1 has a The inner conductor 11 and an outer conductor 12 are wrapped around the outer circumference of the inner conductor 11 and insulated from the inner conductor 11; the signal source is connected to the step P2, and one end of the cable body 1 is connected to a signal source S. The inner conductor 11 transmits an identification signal RS; the signal first switching step P3 connects the inner conductor 11 of the cable body 1 to the cable body 1 through an adapter portion 13A provided by the cable body 1. The signal is transmitted from the outer conductor 12A of the segment 1A and the outer conductor 12 of the cable body 1 to the inner conductor 11A of the signal transmitting segment 1A, so that the identification signal RS is switched by the inner conductor 11 of the cable body 1 for signal transmission. The path is to the outer conductor 12A of the signal transmitting section 1A and radiated to the outside; the second switching step P4 is connected to the outer conductor 12A of the signal transmitting section 1A through the other switching portion 14A provided by the cable body 1 to The inner conductor 11 of the cable body 1 and the inner conductor 11A of the signal transmitting section 1A are connected thereto. The outer conductor 12 of the cable body 1 causes the identification signal RS to be switched from the outer conductor 12A of the signal transmitting section 1A to the inner conductor 11 of the cable body 1 for signal transmission. The signal is transmitted, and the radiation of the identification signal RS is shielded by the outer conductor 12 of the cable body 1; and the characteristic load mounting step P5 is mounted on the other end of the cable body 1.

The cable 100 for transmitting signals in the embodiment of the present invention transmits the identification signal RS from the inner conductor 11 of the cable body 1 to the outer conductor 12A of the signal transmitting section 1A through the adapter portion 13A to be radiated to In the outside, the identification signal RS is again switched back to the inner conductor 11 of the cable body 1 by the adapter portion 14A for signal transmission. In detail, the identification signal RS is completely radiated to the outside by the outer conductor 12A of the signal transmitting section 1A (that is, the transmitting antenna of the identification signal RS) under the condition of maintaining a complete RF signal transmission area. In order to improve the emission amount and power of the RF signal RS, communication operations conforming to special specifications are performed. In other words, the signal emitting area of the outer conductor 12A is larger than the signal emitting area provided by the slot on the outer conductor of the bleed coaxial cable (and the number, shape and distribution of the slots also affect the wavelength and power of the RF signal). The invention can thereby enhance the emission amount of the RF signal RS to perform communication operations (such as radio frequency identification) required by some special specifications.

In addition, the cable 100 for transmitting signals according to the embodiment of the present invention ensures the transmission stability and signal quality of the identification signal RS by the characteristic load 2, the transit circuit board 3 and the high frequency connector 4.

The above description and description are only illustrative of the preferred embodiments of the present invention, and those of ordinary skill in the art can make other modifications in accordance with the scope of the invention as defined below and the description above, but such modifications should still be It is within the scope of the invention to the invention of the invention.

Claims (10)

A cable for transmitting a signal, comprising a cable body having an inner conductor and an outer conductor, wherein the outer conductor is wrapped around the outer circumference of the inner conductor and insulated from the inner conductor, and one end of the cable body is used for Connecting a signal source to transmit an identification signal to the inner conductor and the cable body has a signal transmitting section, and each end of the signal transmitting section has an adapter portion, and the switching portion at one end of the signal transmitting section is connected to the cable The inner conductor of the body is connected to the outer conductor of the signal transmitting section and connects the outer conductor of the cable body to the inner conductor of the signal transmitting section, so that the identification signal is switched from the inner conductor of the cable body to the signal transmission path to the signal The outer conductor of the transmitting section is radiated to the outside, and the connecting portion of the other end of the signal transmitting section is connected to the outer conductor of the signal transmitting section to the inner conductor of the cable body and connects the inner conductor of the signal transmitting section to the cable The outer conductor of the body, such that the identification signal is switched from the outer conductor of the signal transmitting section to the inner conductor of the cable body for signal transmission; and a characteristic load is mounted on the other side of the cable body . The cable for transmitting a signal according to claim 1, wherein an inner conductor of the cable body is soldered to an outer conductor of the signal transmitting section, and an outer conductor of the cable body is soldered to an inner conductor of the signal transmitting section. The cable for transmitting a signal according to claim 1, wherein the adapting portion is a transit circuit board, and the inner conductor of the cable body is connected to the outer conductor of the signal transmitting section, and the cable body is connected The outer conductor is to the inner conductor of the signal transmitting section. The cable for transmitting a signal according to claim 3, wherein the cable body and the signal transmitting section are connected to the transit circuit board through a high frequency connector. The cable for transmitting a signal as claimed in claim 1, wherein the characteristic load is a characteristic resistance. A method of manufacturing a cable for transmitting signals, comprising the steps of: a cable material preparation step of preparing a cable body and a characteristic load, wherein the cable body has an inner conductor and an outer conductor, the outer conductor is wrapped around the outer circumference of the inner conductor and insulated from the inner conductor; Step: connecting one end of the cable body to a signal source to transmit an identification signal to the inner conductor; the first switching step of the signal, connecting the inner conductor of the cable body through a connecting portion provided by the cable body And an outer conductor of a signal transmitting section of the cable body and connecting the outer conductor of the cable body to the inner conductor of the signal transmitting section, so that the identification signal is switched from the inner conductor of the cable body to the signal transmission path to the The outer conductor of the signal transmitting section is radiated to the outside; the second switching step of the signal is connected to the outer conductor of the signal transmitting section to the inner conductor of the cable body through another connecting portion provided by the cable body and connected Signaling the inner conductor of the segment to the outer conductor of the cable body, so that the identification signal is switched from the outer conductor of the signal transmitting segment to the inner conductor of the cable body for signal transmission; and the characteristic load Step, the characteristics of the load attached to the other end of the cable body. The method for manufacturing a cable for transmitting a signal according to claim 6, wherein in the first switching step of the signal and the second switching step of the signal, the inner conductor of the cable body is soldered to the outer conductor of the signal transmitting section, And the outer conductor of the cable body is soldered to the inner conductor of the signal transmitting section. The method for manufacturing a cable for transmitting a signal according to claim 6, wherein in the first switching step of the signal and the second switching step of the signal, the switching portion is a transit circuit board, and the cable body is connected The inner conductor is connected to the outer conductor of the signal transmitting section, and the outer conductor of the cable body is connected to the inner conductor of the signal transmitting section. The method for manufacturing a cable for transmitting a signal according to claim 8, wherein the cable body and the signal transmitting section are connected to the transit circuit board through a high frequency connector. A method of manufacturing a cable for transmitting a signal as claimed in claim 6, wherein the characteristic load is a characteristic resistance.