CN108808255B - Leakage coaxial cable - Google Patents
Leakage coaxial cable Download PDFInfo
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- CN108808255B CN108808255B CN201710292304.3A CN201710292304A CN108808255B CN 108808255 B CN108808255 B CN 108808255B CN 201710292304 A CN201710292304 A CN 201710292304A CN 108808255 B CN108808255 B CN 108808255B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/20—Non-resonant leaky-waveguide or transmission-line antennas; Equivalent structures causing radiation along the transmission path of a guided wave
- H01Q13/203—Leaky coaxial lines
Abstract
A leaky coaxial cable sequentially comprises an inner conductor, an insulating layer, an outer conductor and an outer sheath from inside to outside, wherein a plurality of identical slot groups are periodically arranged on the outer conductor along the axial direction of the cable, each slot group at least comprises a first slot group and a second slot group which are adjacent, the slot type of the second slot group is the same as that of the first slot group, and the second slot group and the first slot group are staggered in the circumferential direction of the leaky coaxial cable, so that the leaky coaxial cable with a large radiation angle is provided.
Description
Technical Field
The invention relates to a cable, in particular to a leaky coaxial cable.
Background
At present, leaky coaxial cables are widely used in indoor distribution systems and the like in addition to wireless communication coverage in places such as railways, tunnels, and mines. A leaky coaxial cable generally comprises, from inside to outside, an inner conductor, an insulating layer, an outer conductor and an outer sheath. The outer conductor is provided with periodic slotted holes. The radiation characteristics of leaky coaxial cables are mainly determined by the size, shape and arrangement of these slots. However, the upper half plane of the radiation pattern of the existing leaky coaxial cable is approximately a sine curve, the maximum radiation directions are consistent, the radiation angle is relatively small, the general radiation angle is 70-80 degrees, and the leaky coaxial cable is not suitable for indoor distribution systems and the like.
Disclosure of Invention
In view of the above, there is a need for a leaky coaxial cable with a large radiation angle.
The utility model provides a leaky coaxial cable, from inside to outside includes inner conductor, insulating layer, outer conductor and oversheath in proper order, it has a plurality of the same slot group to open on the outer conductor along cable axial periodicity:
each slot group at least comprises a first slot group and a second slot group which are adjacent, the slot of the second slot group is the same as that of the first slot group, and the second slot group is staggered in the circumferential direction of the leaky coaxial cable.
Furthermore, the groove shapes of the first groove group and the second groove group are all single-splayed groove shapes, the first groove group comprises a first groove and a second groove, the length and the width of the first groove and the second groove are the same, the inclination angles formed by the first groove and the second groove relative to the axial direction of the leaky coaxial cable are the same, the inclination directions of the first groove and the second groove are opposite, the second groove group comprises a third groove and a fourth groove, the length and the width of the third groove and the fourth groove are the same, the inclination angles formed by the third groove and the fourth groove relative to the axial direction of the leaky coaxial cable are the same, and the inclination directions of the third groove and the fourth groove are opposite;
the length, width and inclination angle of a third slot in the second slot group are the same as the length, width and inclination angle of a first slot in the first slot group, and the length, width and inclination angle of a fourth slot in the second slot group are the same as the length, width and inclination angle of a second slot in the first slot group.
Further, the axial spacing between the geometric center point of the first slot and the geometric center point of the second slot and the axial spacing between the geometric center point of the third slot and the geometric center point of the fourth slot within each slot group are both d1, and the axial spacing between the geometric center point of the third slot and the geometric center point of the first slot and the axial spacing between the geometric center point of the fourth slot and the geometric center point of the second slot within each slot group are both d2, wherein d2> d 1.
Further, the axial spacing between the geometric center point of the third slot and the geometric center point of the first slot and the axial spacing between the geometric center point of the fourth slot and the geometric center point of the second slot within each slot group are both d2, and the axial spacing between the geometric center points of the first slot and the first slot, the axial spacing between the geometric center points of the second slot and the second slot, the axial spacing between the geometric center points of the third slot and the third slot, and the axial spacing between the geometric center points of the fourth slot and the fourth slot in adjacent slot groups are all d3, wherein d3> d 2.
Further, the slot types of the first slot group and the second slot group are both a slot type, the first slot group includes a first slot, the second slot group includes a second slot, the length of the second slot is different from the length of the first slot, or the width of the second slot is different from the width of the first slot, or the length and the width of the second slot are respectively different from the length and the width of the first slot.
Further, the axial spacing between the geometric center point of the second slot and the geometric center point of the first slot within each slot group is d4, and the axial spacing between the geometric center points of the first slot and the second slot in adjacent slot groups is d5, wherein d5> d 4.
Further, each slot group further includes a third slot group adjacent to the second slot group, the third slot group having the same slot type as the first slot group and the second slot group and being staggered in the circumferential direction.
Furthermore, the groove types of the first groove group, the second groove group and the third groove group are all single-splayed groove types, the first groove group comprises a first groove and a second groove, the length and the width of the first groove and the second groove are the same, the inclination angles formed by the first groove and the second groove relative to the axial direction of the leaky coaxial cable are the same, and the inclination directions of the first groove and the second groove are opposite; the second slot group comprises a third slot and a fourth slot, the length and the width of the third slot and the width of the fourth slot are the same, the inclination angles formed by the third slot and the fourth slot relative to the axial direction of the leaky coaxial cable are the same, and the inclination directions of the third slot and the fourth slot are opposite; the third slot group comprises a fifth slot and a sixth slot, the length and the width of the fifth slot and the sixth slot are the same, the inclined angles formed by the fifth slot and the sixth slot relative to the axial direction of the leaky coaxial cable are the same, and the inclined directions of the fifth slot and the sixth slot are opposite.
Further, the second slot group is circumferentially offset from the first slot group in a predetermined direction, and the third slot group is circumferentially offset from the second slot group in the predetermined direction.
Furthermore, the slot in each slot group is a right-angle rectangle or a rectangle with four corners being arc-shaped chamfers.
The invention sets two groups or a plurality of groups of staggered slots distributed periodically in the radial direction to ensure that the slot structures of the leaky coaxial cable are not on the same plane along the axial direction of the leaky coaxial cable, thereby providing the leaky coaxial cable with a large radiation angle.
Drawings
Fig. 1 is a schematic structural view of a leaky coaxial cable according to a first embodiment of the present invention.
Fig. 2 is a schematic view showing the structure of a slit formed in the outer conductor of the leaky coaxial cable according to the first embodiment of the present invention.
Fig. 3 is a schematic view showing the structure of a slit formed in the outer conductor of a leaky coaxial cable according to a second embodiment of the present invention.
Fig. 4 is a schematic view showing the structure of a slit formed in the outer conductor of the leaky coaxial cable according to the third embodiment of the present invention.
Description of the main elements
The following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
The technical solution and other advantages of the present invention will become apparent from the following detailed description of specific embodiments of the present invention, which is to be read in connection with the accompanying drawings. It is to be understood that the drawings are provided solely for the purposes of reference and illustration and are not intended as a definition of the limits of the invention. The dimensions shown in the figures are for clarity of description only and are not to be taken in a limiting sense.
Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a leaky coaxial cable according to a first embodiment of the present invention, and fig. 2 is a schematic structural diagram of a slot formed in an outer conductor of the leaky coaxial cable according to the first embodiment of the present invention. The leaky coaxial cable 1 comprises an inner conductor 11, an insulating layer 12, an outer conductor 13 and an outer sheath 14 from inside to outside in sequence. The outer conductor 13 is periodically provided with a plurality of identical slot groups 131 along the axial direction of the leaky coaxial cable 1.
Each slot group 131 includes a first slot group 132 and a second slot group 133 that are adjacent. The first slot sub-group 132 has the same slot type as the second slot sub-group 133 and is circumferentially staggered. In this embodiment, the first slot subset 132 is circumferentially offset from the second slot subset 133 by an angle less than 180 degrees. The slot types of the first slot group 132 and the second slot group 133 are all single-eight slot types. The first slot grouping 132 includes a first slot 134a and a second slot 134 b. The length and width of the first slot 134a and the second slot 134b are the same. The first slit 134a and the second slit 134b are inclined at the same angle with respect to the axial direction of the leaky coaxial cable 1, and are both θ. The first and second slits 134a and 134b are inclined in opposite directions. The geometric center points of the first and second slits 134a and 134B are a and B, respectively. An axial spacing d1 is between a geometric center point a of the first slot 134a and a geometric center point B of the second slot 134B. The second slot grouping 133 includes a third slot 135a and a fourth slot 135 b. The third and fourth slots 135a and 135b have the same length and width. The inclination angles of the third slit 135a and the fourth slit 135b with respect to the axial direction of the leaky coaxial cable 1 are the same, and are psi. The third and fourth slits 135a and 135b are inclined in opposite directions. The geometric center points of the third and fourth slits 135a and 135b are C and D, respectively. An axial spacing D1 is provided between a geometric center point C of the third slot 135a and a geometric center point D of the fourth slot 135 b.
The length, width and inclination angle ψ of a third slot 135a in the second slot group 133 is the same as the length, width and inclination angle θ of a first slot 134a in the first slot group 132, and the length, width and inclination angle ψ of a fourth slot 135b in the second slot group 133 is the same as the length, width and inclination angle θ of a second slot 134b in the first slot group 132. The axial spacing between the geometric center point C of the third slot 135a and the geometric center point a of the first slot 134a and the axial spacing between the geometric center point D of the fourth slot 135B and the geometric center point B of the second slot 134B within each slot group 131 is D2, wherein D2> D1. The circumferential spacing between the geometric center point C of the third slot 135a and the geometric center point a of the first slot 134a and the circumferential spacing between the geometric center point D of the fourth slot 135B and the geometric center point B of the second slot 134B within each slot group 131 is h1, wherein h1> 0. The axial spacing between the geometric center points of the first slot 134a, the second slot 134b, the third slot 135a, and the fourth slot 135b in adjacent slot sets 131 is d3, wherein d3> d 2. The first slit 134a, the second slit 134b, the third slit 135a, and the fourth slit 135b are rectangular rectangles or rectangles with rounded and chamfered corners.
By adopting the leaky coaxial cable of the first embodiment of the invention, a wider radiation angle can be obtained, the radiation performance of the cable is improved, and the radiation angle can reach 180 degrees and above.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a slot formed in an outer conductor of a leaky coaxial cable according to a second embodiment of the present invention. The leaky coaxial cable 2 of the second embodiment is similar to the leaky coaxial cable 1 of the first embodiment, except that:
the slot types of the first slot group 232 and the second slot group 233 of the leaky coaxial cable 2 of the present embodiment are both a straight slot type. The first slot grouping 232 includes a first slot 234, the first slot 234 having a geometric center point E. The second slot subset 233 includes a second slot 235, the second slot 235 having a geometric center point F. The axial spacing between the geometric center point F of the second slot 235 within each slot group 231 and the geometric center point E of the first slot 234 is d4, and the circumferential spacing between the geometric center point F of the second slot 235 within each slot group 231 and the geometric center point E of the first slot 234 is h 2. The axial spacing between the geometric center points of the first and second slots 234, 235 in adjacent sets of slots 231 is d5, where d5> d 4. The length of the second slot 235 is different from the length of the first slot 234, or the width of the second slot 235 is different from the width of the first slot 234, or the length and width of the second slot 235 are different from the length and width of the first slot 234, respectively. The first slit 234 and the second slit 235 are rectangular rectangles or rectangles with four rounded corners. However, the leaky coaxial cable according to the second embodiment can also achieve effects similar to those of the leaky coaxial cable according to the first embodiment.
Referring to fig. 4, fig. 4 is a schematic structural diagram of a slot formed in an outer conductor of a leaky coaxial cable according to a third embodiment of the present invention. The leaky coaxial cable 3 of the third embodiment is similar to the leaky coaxial cable 1 of the first embodiment, except that:
each slot group 331 of the leaky coaxial cable 3 of the present embodiment includes not only the first slot group 332 and the second slot group 333 but also a third slot group 334 adjacent to the second slot group 333. The third slot sub-group 334 has the same slot type as the first slot sub-group 332 and the second slot sub-group 333 and is circumferentially staggered. In this embodiment, the third slot sub-group 334 is circumferentially offset from the first slot sub-group 332 by an angle of less than 180 degrees. Wherein the second slot sub-group 333 is circumferentially offset from the first slot sub-group 332 in a predetermined direction, and the third slot sub-group 334 is circumferentially offset from the second slot sub-group 333 in the predetermined direction. The predetermined direction is a clockwise direction or a counterclockwise direction.
The slot types of the first slot group 332, the second slot group 333, and the third slot group 334 are all single-figure slot types. The first slot grouping 332 includes a first slot 335a and a second slot 335 b. The first slot 335a and the second slot 335b have the same length and width. The first slot 335a and the second slot 335b are inclined at the same angle α with respect to the axial direction of the leaky coaxial cable 3. The first slot 335a and the second slot 335b are inclined in opposite directions. The geometric center points of the first slot 335a and the second slot 335b are G and H, respectively. An axial spacing d6 is between a geometric center point G of the first slot 335a and a geometric center point H of the second slot 335 b. The second slot grouping 333 includes a third slot 336a and a fourth slot 336b, the third slot 336a and the fourth slot 336b having the same length and width. The inclination angles formed by the third slit 336a and the fourth slit 336b with respect to the axial direction of the leaky coaxial cable 3 are the same, and are both β. The third and fourth slits 336a and 336b are inclined in opposite directions. The geometric center points of the third slot 336a and the fourth slot 336b are I and J, respectively. The axial spacing between the geometric center points I and J of the third and fourth slots 336a and 336b is d 6. The third slot grouping 334 includes fifth and sixth slots 337a, 337b, the fifth and sixth slots 337a, 337b having the same length and width. The inclination angles of the fifth slit 337a and the sixth slit 337b with respect to the axial direction of the leaky coaxial cable 3 are the same, and are γ. The fifth slit 337a and the sixth slit 337b are inclined in opposite directions. The geometric center points of the fifth slot 337a and the sixth slot 337b are K and L, respectively. An axial spacing d6 is between a geometric center point K of the fifth slot 337a and a geometric center point L of the sixth slot 337 b.
In this embodiment, the length, width and inclination angle γ of the fifth slot 337a in the third slot group 334 are different from at least one of the length, width and inclination angle β of the third slot 336a in the second slot group 333, and the length, width and inclination angle γ of the sixth slot 337b in the third slot group 334 are different from at least one of the length, width and inclination angle β of the fourth slot 336b in the second slot group 333. The length, width and inclination angle γ of the fifth slot 337a in the third slot subset 334 are different from at least one of the length, width and inclination angle α of the first slot 335a in the first slot subset 332, and the length, width and inclination angle γ of the sixth slot 337b in the third slot subset 334 are different from at least one of the length, width and inclination angle α of the second slot 335b in the first slot subset 332. The length, width and inclination angle β of the third slot 336a in the second slot subset 333 are different from at least one of the length, width and inclination angle α of the first slot 335a in the first slot subset 332, and the length, width and inclination angle β of the fourth slot 336b in the second slot subset 333 are different from at least one of the length, width and inclination angle α of the second slot 335b in the first slot subset 332. For example, the length of the fifth slot 337a is different from the length of the third slot 336a, the width of the fifth slot 337a is different from the width of the first slot 335a, and the length and width of the third slot 336a are different from the length and width of the first slot 335 a.
In other embodiments, the length, width, and tilt angle γ of the fifth slot 337a in the third slot subset 334 are the same as the length, width, and tilt angle β of the third slot 336a in the second slot subset 333, and the length, width, and tilt angle γ of the sixth slot 337b in the third slot subset 334 are the same as the length, width, and tilt angle β of the fourth slot 336b in the second slot subset 333. The length, width and inclination angle γ of the fifth slot 337a in the third slot subset 334 are the same as the length, width and inclination angle α of the first slot 335a in the first slot subset 332, and the length, width and inclination angle γ of the sixth slot 337b in the third slot subset 334 are the same as the length, width and inclination angle α of the second slot 335b in the first slot subset 332. The length, width and inclination angle β of the third slot 336a in the second slot subgroup 333 are the same as the length, width and inclination angle α of the first slot 335a in the first slot subgroup 332, and the length, width and inclination angle β of the fourth slot 336b in the second slot subgroup 333 are the same as the length, width and inclination angle α of the second slot 335b in the first slot subgroup 332.
The axial spacing between the geometric center point I of the third slot 336a and the geometric center point G of the first slot 335a and the axial spacing between the geometric center point J of the fourth slot 336b and the geometric center point H of the second slot 335b within each slot set 331 is d7, wherein d7> d 6. The circumferential spacing between the geometric center point I of the third slot 336a and the geometric center point G of the first slot 335a and the circumferential spacing between the geometric center point J of the fourth slot 336b and the geometric center point H of the second slot 335b within each slot group 331 is H3, wherein H3> 0. The axial spacing between the geometric center point K of the fifth slot 337a and the geometric center point I of the third slot 336a and the axial spacing between the geometric center point L of the sixth slot 337b and the geometric center point J of the fourth slot 336b within each slot set 331 is d8, wherein d8> d 6. The circumferential spacing between the geometric center point K of the fifth slot 337a and the geometric center point I of the third slot 336a and the circumferential spacing between the geometric center point L of the sixth slot 337b and the geometric center point J of the fourth slot 336b within each slot group 331 is h4, wherein h4> 0. The axial spacing between the geometric center points of the first slot 335a, the second slot 335b, the third slot 336a, the fourth slot 336b, the fifth slot 337a, and the sixth slot 337b in adjacent sets of slots 331 is d9, where d9> (d6+ d7+ d8), the axial spacing between the geometric center points of the first slot 335a, the second slot 335b, the third slot 336a, the fourth slot 336b, the fifth slot 337a, and the sixth slot 337 b. The first slit 335a, the second slit 335b, the third slit 336a, the fourth slit 336b, the fifth slit 337a and the sixth slit 337b are rectangular rectangles having right angles or rectangular rectangles having rounded and chamfered corners. However, the leaky coaxial cable according to the third embodiment can also achieve effects similar to those of the leaky coaxial cable according to the first embodiment.
The radiation patterns of the existing leaky coaxial cable at 1800MHz and 2300MHz are basically the same as the pattern of free space. The upper half plane of the radiation pattern of the existing leaky coaxial cable at 1800MHz and 2300MHz is approximate to a sine curve, the maximum radiation directions are consistent, and the radiation angle is relatively small. The radiation patterns of the leaky coaxial cable at 1800MHz and 2300MHz are different from the patterns of a free space, the maximum radiation directions are different, the polarization directions of radiation fields are different to form larger cross polarization components, and the radiation angle is relatively larger.
According to the invention, the upper and lower groups or the plurality of groups of staggered slots which are periodically distributed are arranged, and each group of slot groups can be composed of the same or different slot structures, so that the slot structures of the leaky coaxial cable are not positioned on the same plane in the axial direction of the leaky coaxial cable, the radiation angle of the leaky coaxial cable is increased, and the indoor and two-side window-side signals can be covered when the leaky coaxial cable is arranged indoors. Meanwhile, the radiation effect is uniformly distributed in a strip shape, and even when part of the slot structure is shielded, the adjacent slot structure can perform signal compensation, so that the signal loss is prevented.
It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and that other variations within the spirit of the present invention may be made by those skilled in the art. Such variations are intended to be included within the scope of the invention as claimed.
Claims (9)
1. The utility model provides a be adapted to indoor distributed system's leaky coaxial cable for 1800MHZ and 2300MHZ frequency channel includes inner conductor, insulating layer, outer conductor and oversheath from inside to outside in proper order, it has a plurality of the same slot group to open along cable axial periodicity on the outer conductor, its characterized in that:
each slot group only comprises a first slot group and a second slot group which are adjacent, the second slot group has the same slot type as the first slot group and is staggered in the circumferential direction of the leaky coaxial cable, and the angle of the second slot group and the first slot group which are staggered in the circumferential direction is less than 180 degrees;
the groove shapes of the first groove group and the second groove group are single-splayed groove shapes, the first groove group comprises a first groove and a second groove, the length and the width of the first groove and the second groove are the same, the inclination angles formed by the first groove and the second groove relative to the axial direction of the leaky coaxial cable are the same, the inclination directions of the first groove and the second groove are opposite, the second groove group comprises a third groove and a fourth groove, the length and the width of the third groove and the fourth groove are the same, the inclination angles formed by the third groove and the fourth groove relative to the axial direction of the leaky coaxial cable are the same, and the inclination directions of the third groove and the fourth groove are opposite;
the length, width and inclination angle of a third slot in the second slot group are the same as the length, width and inclination angle of a first slot in the first slot group, and the length, width and inclination angle of a fourth slot in the second slot group are the same as the length, width and inclination angle of a second slot in the first slot group.
2. The leaky coaxial cable as claimed in claim 1, wherein:
the axial spacing between the geometric center point of the first slot and the geometric center point of the second slot and the axial spacing between the geometric center point of the third slot and the geometric center point of the fourth slot within each slot group are both d1, and the axial spacing between the geometric center point of the third slot and the geometric center point of the first slot and the axial spacing between the geometric center point of the fourth slot and the geometric center point of the second slot within each slot group are both d2, wherein d2> d 1.
3. The leaky coaxial cable as claimed in claim 1, wherein:
the axial spacing between the geometric center point of the third slot and the geometric center point of the first slot and the axial spacing between the geometric center point of the fourth slot and the geometric center point of the second slot within each slot group are both d2, and the axial spacing between the geometric center points of the first slot and the second slot, the axial spacing between the geometric center points of the third slot and the third slot, and the axial spacing between the geometric center points of the fourth slot and the fourth slot in adjacent slot groups are all d3, wherein d3> d 2.
4. The utility model provides a be adapted to indoor distributed system's leaky coaxial cable for 1800MHZ and 2300MHZ frequency channel includes inner conductor, insulating layer, outer conductor and oversheath from inside to outside in proper order, it has a plurality of the same slot group to open along cable axial periodicity on the outer conductor, its characterized in that:
each slot group only comprises a first slot group and a second slot group which are adjacent, the second slot group has the same slot type as the first slot group and is staggered in the circumferential direction of the leaky coaxial cable, and the angle of the second slot group and the first slot group which are staggered in the circumferential direction is less than 180 degrees;
the slot types of the first slot group and the second slot group are both a straight slot type, the first slot group comprises a first slot, the second slot group comprises a second slot, the length of the second slot is different from that of the first slot, or the width of the second slot is different from that of the first slot, or the length and the width of the second slot are respectively different from those of the first slot.
5. The leaky coaxial cable as claimed in claim 4, wherein:
the axial spacing between the geometric center point of the second slot and the geometric center point of the first slot within each slot group is d4, and the axial spacing between the geometric center points of the first slot and the second slot in adjacent slot groups is d5, wherein d5> d 4.
6. The utility model provides a be adapted to indoor distributed system's leaky coaxial cable for 1800MHZ and 2300MHZ frequency channel includes inner conductor, insulating layer, outer conductor and oversheath from inside to outside in proper order, it has a plurality of the same slot group to open along cable axial periodicity on the outer conductor, its characterized in that:
each slot group comprises a first slot group and a second slot group which are adjacent, the slot type of the second slot group is the same as that of the first slot group, and the second slot group and the first slot group are staggered in the circumferential direction of the leaky coaxial cable;
each slot group further comprises only a third slot group adjacent to the second slot group, the third slot group being the same slot type as the first slot group and the second slot group and being circumferentially staggered, the third slot group and the first slot group being circumferentially staggered by an angle of less than 180 degrees;
the slot types of the first slot group, the second slot group and the third slot group are all single-splayed slot types.
7. The leaky coaxial cable as claimed in claim 6, wherein:
the first slot group comprises a first slot and a second slot, the length and the width of the first slot and the width of the second slot are the same, the inclination angles formed by the first slot and the second slot relative to the axial direction of the leaky coaxial cable are the same, and the inclination directions of the first slot and the second slot are opposite; the second slot group comprises a third slot and a fourth slot, the length and the width of the third slot and the width of the fourth slot are the same, the inclination angles formed by the third slot and the fourth slot relative to the axial direction of the leaky coaxial cable are the same, and the inclination directions of the third slot and the fourth slot are opposite; the third slot group comprises a fifth slot and a sixth slot, the length and the width of the fifth slot and the sixth slot are the same, the inclined angles formed by the fifth slot and the sixth slot relative to the axial direction of the leaky coaxial cable are the same, and the inclined directions of the fifth slot and the sixth slot are opposite.
8. The leaky coaxial cable as claimed in claim 6, wherein:
the second slot sub-group is circumferentially offset from the first slot sub-group in a predetermined direction, and the third slot sub-group is circumferentially offset from the second slot sub-group in the predetermined direction.
9. The leaky coaxial cable as claimed in any one of claims 1 to 8, wherein:
the slot in each slot group is a right-angle rectangle or a rectangle with four corners being arc-shaped chamfers.
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| CN201710292304.3A CN108808255B (en) | 2017-04-28 | 2017-04-28 | Leakage coaxial cable |
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| CN201710292304.3A CN108808255B (en) | 2017-04-28 | 2017-04-28 | Leakage coaxial cable |
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| CN108808255B true CN108808255B (en) | 2020-12-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022162037A1 (en) * | 2021-01-27 | 2022-08-04 | Kabelwerk Eupen Ag | Radiating coaxial cable |
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|---|---|---|---|---|
| RU2753842C2 (en) * | 2018-11-23 | 2021-08-24 | Чжунтянь Рэдио Фриквенси Кейбл Ко., Лтд | Wide angle radiating cable |
| CN112887990B (en) * | 2020-12-28 | 2023-04-28 | 煤炭科学技术研究院有限公司 | Mining 5G communication base station radio frequency energy loss optimization method and device |
| CN112803169A (en) * | 2021-02-03 | 2021-05-14 | 江苏亨鑫科技有限公司 | Radiation enhancement type leakage coaxial cable |
| CN112886256A (en) * | 2021-02-03 | 2021-06-01 | 江苏亨鑫科技有限公司 | Multi-direction radiation leakage coaxial cable |
| CN112993582B (en) * | 2021-05-10 | 2021-08-31 | 中天射频电缆有限公司 | Leakage coaxial cable and indoor distribution system |
| CN113410646A (en) * | 2021-06-16 | 2021-09-17 | 中天射频电缆有限公司 | Leakage cable |
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| CN108808255A (en) | 2018-11-13 |
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