KR20110053509A - Skeleton slot type radiator - Google Patents

Abstract

PURPOSE: A skeleton slot type radiator is provided to prevent the reduction of a polarized wave by inducing a radiation pattern to have an inclined polarized wave. CONSTITUTION: A skeleton slot type radiator resonates at a preset frequency band and radiates an electric wave. Two loop radiators(200,300) are combined to make each feeder(210,310) close. A parasitic element(220,320) is extended from an adjacent position to each feeder.

Description

Copier with skeleton slot type {SKELETON SLOT TYPE RADIATOR}

The present invention relates to a copier having a skeleton slot form, and more particularly, to a copier having a skeleton slot form in which two loop copiers are formed in a merged form. The present invention relates to a copier having a skeleton slot shape, which induces a non-uniformity and thus solves a problem of reducing polarization characteristics due to reflection, diffraction and refraction caused by the surrounding environment.

 Recently, with the development of convergence technology and mobile communication technology for broadcasting and communication, analog TV service provided as an analog environment is being replaced by digital TV service. In line with this trend, an antenna suitable for a digital TV broadcasting environment is required.

Currently, a horizontal polarization antenna such as broadcast polarization is mainly used as an antenna for TV broadcast reception. However, such a horizontal polarization antenna has a problem in that polarization characteristics are deteriorated by the surrounding environment. That is, reflection, diffraction, and refraction occur according to the urban and indoor environments during the movement of radio waves, thereby causing a problem in that polarization characteristics are reduced.

Therefore, it is urgent to develop an antenna capable of preventing the deterioration of polarization characteristics caused by the surrounding environment.

The present invention is to solve the above-mentioned problems of the prior art, in the copier having a skeleton slot form formed in the form of a merge of two loop copier, including the parasitic element so that the overall radiation pattern has an inclined polarization form The purpose of the present invention is to solve the problem of reduction of polarization characteristics caused by reflection, diffraction and refraction caused by the surrounding environment.

According to an embodiment of the present invention for achieving the above object, a skeleton slot type copier which resonates at a frequency of a predetermined band and radiates radio waves, and two loops in which respective feed parts are merged adjacent to each other. A copier including a copier and a parasitic element extending from a point adjacent to each of the feeders is provided.

The parasitic elements extend in a substantially vertical direction from a point adjacent to each of the feeders, in a direction perpendicular to an extension line including at least some of the portions in which the two loop copiers are merged, but extending in opposite directions. It is preferable.

In a portion in which the two loop copiers are merged, a gap may be formed between the feeders adjacent to each other to separate the feeders from each other.

Matching units may be formed in at least some of the two loop copiers.

The two loop copiers may be circular or polygonal in shape.

In the case where the two loop copiers are rectangular, the length of at least one side may have a relationship of λ / 4 with respect to an operating frequency.

According to another embodiment of the present invention, a skeleton slot type copier which resonates at a frequency of a predetermined band and radiates radio waves, which is formed in a loop copier, at least a part of the loop copier, and is inward of the loop copier. There is provided a copier comprising two patches formed in the form opposite to each other, and parasitic elements respectively formed on at least a portion of the two patches.

The two patches may be formed in a polygonal shape.

In the two patches, a feeding part may be formed at a point where the two patches are most adjacent to each other.

The parasitic elements may extend from points adjacent to each of the feeders.

The parasitic elements may extend from a point adjacent to each of the feeders in a substantially vertical direction-a direction perpendicular to an extension line including at least a portion of the loop copier, but in opposite directions.

Matching units may be formed on at least some of the two patches.

The loop copier may be in the form of a circle or a polygon.

When the loop copier is a quadrangle, the length of one of the four sides may have a relationship of λ / 4 with respect to an operating frequency.

According to the present invention, in the copier having a skeleton slot type, since the overall radiation pattern is induced by the parasitic element to have an inclined polarization shape, the problem of reducing polarization characteristics due to reflection, diffraction and refraction caused by the surrounding environment can be solved. It becomes possible.

DETAILED DESCRIPTION The following detailed description of the invention refers to the accompanying drawings that show, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description, therefore, is not to be taken in a limiting sense, and the scope of the present invention, if properly described, is defined only by the appended claims, along with the full range of equivalents to which such claims are entitled. Like reference numerals in the drawings refer to the same or similar functions throughout the several aspects.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

[Preferred Embodiments of the Invention]

Antenna composition

1 is a diagram illustrating a configuration of a copying machine in an antenna having a skeleton slot structure according to an embodiment of the present invention. FIG. 1A is a diagram showing the overall configuration of the copier, and FIG. 1B is a diagram for clearly showing each component constituting the copier shown in FIG. 1A.

As shown in Figs. 1A and 1B, a copier having a skeleton slot structure of the present invention basically has a large loop shape, but has a merge structure of two loop copiers. Hereinafter, a large loop type copying machine is called a first loop copying machine 100, and two loop copying machines constituting the first loop copying machine 100 are referred to as a second loop copying machine 200 and a third loop copying machine 300, respectively. It will be called. The fact that the first loop copier 100 has a merge structure of two loop copiers means that the second loop copier 200 and the third loop copier 300, which are indicated by solid lines in the drawing, are merged with each other. . However, the two loop copiers 200 and 300 do not have a complete loop shape, and at least one gap G may be formed in the merged portion.

The second loop copier 200 and the third loop copier 300 have feeders 210 and 310 which enable radio wave transmission / reception at a predetermined frequency by drawing power supplied from the outside into the entire copier. The feeders 210 and 310 are formed at a portion where the second loop copier 200 and the third loop copier 300 are merged. That is, the feed parts 210 and 310 of the second loop copier 200 and the third loop copier 300 are formed at positions adjacent to each other at the center point of the first loop copier 100. However, as described above, since the two loop copiers 200 and 300 do not have a complete loop shape and have a gap G in the merged portion, the respective feed sections 210 and 310 are in contact with or opposed to each other. It may not be formed in a shape and may be formed to face each other with a predetermined gap G at an adjacent position. For example, of the feed units 210 and 310 adjacent to each other with a predetermined gap G, the feed unit 210 of the second loop copier 200 is formed on the left side, and the feed of the third loop copier 300 is provided. The whole 310 may be formed on the right side. On the other hand, the second loop copier 200 and the third loop copier 300 may be formed in a rectangular shape, one side of the length may have a relationship of λ / 4 with respect to the operating frequency of the entire copier. According to one embodiment of the invention, the copier of the present invention can operate in the UHF band (470 ~ 806MHz) band, as an example, the horizontal length of the second loop copier 200 and the third loop copier 300 is It may be about 150mm. However, the second loop copier 200 and the third loop copier 300 may be formed in a circular or other polygonal shape in addition to the quadrangle. Accordingly, the first loop copier 100 may also be embodied in polygons or circles other than squares.

In the copier of the present invention, parasitic elements 220 and 320 may be formed in the vicinity of the feed units 210 and 310 of the second loop copier 200 and the third loop copier 300. The parasitic elements 220 and 320 are components for inducing an overall radiation pattern. Since the present invention is intended to show the inclined polarization characteristics by deforming that the overall radiation pattern is a horizontal polarization form, each of the parasitic elements 220 and 320 preferably extend in different vertical directions. For example, as illustrated in FIGS. 1A and 1B, the parasitic element 220 formed near the power supply unit 210 of the second loop copier 200 may have a lower direction from the power supply unit 210. The parasitic element 320 extending in the outward direction of the two loop copier 200 and formed near the feed part 310 of the third loop copier 300 is in a top direction from the feed part 310, that is, the third loop. It may extend in the outward direction of the copier 300. By the parasitic elements 220 and 320, the radiation pattern of the entire copier may be a tilted polarized wave form induced to a certain degree in the direction of the parasitic elements 220 and 320, rather than a horizontal polarization form.

Returning to the overall shape of the first loop copier 100 in which the second loop copier 200 and the third loop copier 300 are merged, the shape thereof will be described below.

The first loop copier 100 is a merged form of the second loop copier 200 and the third loop copier 300 and may be formed in a circular or polygonal shape as described above. As an example, the first loop copier 100 may be formed in a rectangular shape, preferably a rectangular shape, wherein the shorter of four sides of the first loop copier 100 is the second loop copier 200 and the third loop. The length of one side of the copier 300 and as described above may have a relationship of λ / 4 with respect to the frequency at which the copier operates. Patches P1 and P2 having a predetermined shape in the inward direction of the first loop copier 100 are formed in at least a portion (preferably, the middle point of the long side) of the two long sides of the first loop copier 100. . The shapes of the patches P1 and P2 may be circular or polygonal. For example, as illustrated in FIGS. 1A and 1B, the patches P1 and P2 may have a rectangular patch attached to two long sides of the first loop copier 100. The triangular patch may be a pentagonal patch P1 and P2 coupled to each other. The patches P1 and P2 may be formed to be symmetrical to each other, and the patches P1 and P2 may face each other because the patches P1 and P2 are formed in the inner direction of the first loop copier 100. In the patches P1 and P2, the feeders 210 and 310 described above may be formed at portions adjacent to the center point of the first loop copier 100. That is, the patches P1 and P2 are formed to face each other with a predetermined gap G, and the feed parts 210 and 310 may be formed at portions where the patches P1 and P2 are closest to each other.

In the patch P1 and P2, at least one parasitic element 220 or 320 may be formed in an area adjacent to the power feeding parts 210 and 310. As described above, the parasitic elements 220 and 320 extend in a substantially vertical direction from points adjacent to each of the feed parts 210 and 310, but extend in opposite directions to each other. Here, the vertical direction is a vertical direction with respect to the ground, and may mean, for example, a long side direction of the first loop copier 100. Meanwhile, at least one matching part M1 and M2 may be formed in the patches P1 and P2. The matching units M1 and M2 serve as lumped elements (eg, inductors) for proper matching according to the operating frequency when the entire copier operates as an antenna. The matching units M1 and M2 may be polygonal, for example, rectangular, as shown in FIGS. 1A and 1B, and may be formed on at least a portion of the patches P1 and P2. In addition, although not limited thereto, as shown in FIGS. 1A and 1B, the parasitic elements 220 and 320 may be formed in opposite directions. That is, in the patch P1, the matching part M1 is formed in the upper direction, which is the opposite direction in which the parasitic element 220 is formed, and in the patch P2, the matching part M1 is formed in the opposite direction in which the parasitic element 320 is formed. The matching part M2 may be formed in the lower direction.

Hereinafter, the actual operating characteristics of the copier shown in FIG. 1 will be described.

Operating characteristics of the copier

In the following description, a copying machine according to an embodiment of the present invention refers to a copying machine shown in FIGS. 1A and 1B and implements a copying machine having a width of 150 mm, a length of 230 mm, and a thickness of 0.8 mm to obtain the following operating characteristics. The simulation was carried out.

2 is a diagram illustrating a current distribution when power is supplied to a copier according to an embodiment of the present invention.

As shown in FIG. 2, when power is supplied to feeders 210 and 310 of the copier according to an embodiment of the present invention, the loop and the third loop copier 300 formed by the second loop copier 200 is formed. It can be seen that the current is distributed along the loop formed by.

On the other hand, Figure 3 is a view showing a radiation 3D pattern of the copier according to an embodiment of the present invention. First, FIG. 3A illustrates a radiation 3D pattern when no parasitic elements 220 and 320 are formed in the copier, and FIG. 3B illustrates the parasitic elements 220 and 320 in the copier according to an embodiment of the present invention. It is a figure which shows the radiation 3D pattern in the case of formation.

As shown in FIG. 3A, when the parasitic elements 220 and 320 are not formed, it can be seen that the entire copier exhibits a horizontal radiation pattern. However, when the parasitic elements 220 and 320 are formed as in the present invention, the radiation pattern of the inclined shape is shown as in FIG. 3B. The inclined radiation pattern is a result of the radiation pattern being induced in the direction in which the parasitic elements 220 and 320 extend, and thus a problem of reducing polarization characteristics due to reflection, diffraction, and refraction according to the surrounding environment may be solved. Will be.

4 is a graph showing a standing wave ratio (VSWR) of a copying machine according to an embodiment of the present invention.

As shown in FIG. 4, it can be seen that the copier according to the present invention exhibits VSWR characteristics of 2: 1 or less in the UHF band (470 to 806 MHz).

In addition, Figures 5a to 5c is a diagram showing the radiation characteristics for each frequency of the copier according to an embodiment of the present invention. First, Figure 5a shows the radiation characteristics in the 470MHz band, which can be called the lowest frequency of the UHF band, Figure 5b shows the radiation characteristics in the 670MHz band, Figure 5c is in the 806MHz band, which can be called the highest frequency of the UHF band It shows the radiation characteristic of.

5A to 5C, it can be seen that the copier according to the present invention exhibits gain characteristics of 2.5 to 3.9 dBi in the UHF band. In other words, it can be seen that it exhibits suitable characteristics as an antenna for a digital TV operating in the UHF band.

Although the present invention has been described with reference to specific embodiments such as specific components and the like, but it is provided to help a more general understanding of the present invention, but the present invention is not limited to the above embodiments. For those skilled in the art, various modifications and variations can be made from these descriptions.

Therefore, the spirit of the present invention should not be construed as being limited to the above-described embodiments, and all of the equivalents or equivalents of the claims, as well as the following claims, I will say.

1A and 1B show the configuration of a skeleton slot structure copier according to an embodiment of the present invention.

2 is a diagram showing a current distribution when electric power is supplied to a copier according to an embodiment of the present invention.

3A is a diagram showing a radiation 3D pattern of a skeleton slot structure copier in which no parasitic elements are formed.

3B is a diagram illustrating a radiation 3D pattern of a skeleton slot structure copier in which parasitic elements are formed according to an embodiment of the present invention.

4 is a graph showing a standing wave ratio (VSWR) of a copying machine according to an embodiment of the present invention.

5a to 5c are diagrams showing the radiation characteristics of each copier according to one embodiment of the present invention.

Claims (16)

A copier in the form of a skeleton slot that radiates radio waves by resonating at a frequency of a predetermined band, Two loop copiers, each feed unit being merged adjacent to each other, and Parasitic elements extending from points adjacent to each of the feeders Copier comprising a. The method of claim 1, The parasitic elements extend in a substantially vertical direction from a point adjacent to each of the feeders, in a direction perpendicular to an extension line including at least some of the portions in which the two loop copiers are merged, but extending in opposite directions. Copiers characterized in that. The method of claim 1, And a gap for separating the feeder portions from each other between the feeder portions adjacent to each other. The method of claim 1, At least some of the two loop copiers are formed with matching units, respectively. The method of claim 1, And the two loop copiers have a circular or polygonal shape. The method of claim 5, And the two loop copiers have a rectangular shape. The method of claim 6, And the length of at least one side of the two loop copiers has a relationship of [lambda] / 4 with respect to an operating frequency. A copier in the form of a skeleton slot that radiates radio waves by resonating at a frequency of a predetermined band, Loop copier, Two patches formed on at least a portion of the loop copier and formed in an inward direction of the loop copier so as to face each other, and Parasitic elements each formed on at least a portion of the two patches Copier comprising a. The method of claim 8, And the two patches are formed in a circular or polygonal shape. The method of claim 8, The copier according to the two patches, wherein a feeding part is formed at a point where the two patches are most adjacent to each other. The method of claim 10, And the parasitic element extends from a point adjacent to each of the feeders. The method of claim 11, And the parasitic element extending from a point adjacent to each of the feeders in a substantially vertical direction-a direction perpendicular to an extension line comprising at least a portion of the loop copier-and extending in opposite directions. The method of claim 8, At least some of the two patches are formed with matching units, respectively. The method of claim 7, wherein And the loop copier is circular or polygonal in shape. The method of claim 14, And the loop copier has a rectangular shape. The method of claim 15, The length of one of the four sides of the loop copier has a relationship of λ / 4 with respect to the operating frequency.

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