Metal sheet digital television receiving antenna

Abstract

The utility model relates to a metal sheet digital television receiving antenna. A frequency band broadening receiving oscillator is arranged between an oscillator I and an oscillator II of the antenna; the upper end of the vibrator I extends upwards and bends to the upper end of the vibrator II from left to right, and the vibrator I and the vibrator II are not connected; the lower end of the vibrator I extends downwards from left to right, is bent at a right angle and is parallel to the lower end of the vibrator II, the lower ends of the vibrator II are parallel, then extend from right to left and wrap the right-angle bent part of the vibrator I, and the parallel part is provided with feeding points of positive and negative poles and five matching gaps. According to the utility model, the oscillator I, the oscillator II and the frequency band broadening receiving oscillator are combined to realize broadband receiving of ground wave digital television signals; the five matching gaps form broadband impedance matching; due to the fact that the designed antenna is small in size, utilization of induction electric waves is achieved, and multi-gap broadband matching is achieved, small-size and high-gain broadband television signal receiving is achieved, and packaging and transportation cost can be reduced.

Description

Technical Field

[0001] The utility model relates to a metal sheet digital TV receiving antenna. Background Art

[0002] Currently, the TV receiving antennas on the market generally use aluminum tubes to make the vibrators. Usually, the relative volume is relatively large. If the volume is too small, there is a defect of low gain, which causes adverse factors such as transportation, packaging, cost, and use. Therefore, metal sheet type TV receiving antennas have emerged on the market. However, the number of gaps in the design of these antennas is related to the impedance matching of the wide frequency band, thus affecting the signal reception. Summary of the Invention

[0003] The purpose of the utility model is to provide a metal sheet digital TV receiving antenna with a small volume and high gain, thereby reducing the packaging cost and transportation cost, and at the same time having multiple gaps to achieve better impedance matching.

[0004] The technical solution adopted by the utility model is: a metal sheet digital TV receiving antenna, including a metal sheet body, characterized in that in the middle of the body are vibrator one and vibrator two arranged left and right. There is a frequency band broadening receiving vibrator between vibrator one and vibrator two; the upper end of vibrator one extends upward and bends from left to right to the upper end of vibrator two, and they are not connected; the lower end of vibrator one extends downward from left to right and bends at a right angle, and is juxtaposed with the lower end of vibrator two. After juxtaposing, the lower end of vibrator two extends from right to left and wraps the right-angle bending part of vibrator one. The juxtaposed part is provided with feeding points for positive and negative poles; the two sides of the frequency band broadening receiving vibrator are in an inner arc shape and are connected to the outer arc-shaped sides on one side of vibrator one and vibrator two to form a first matching gap and a second matching gap; the upward and left-to-right extending and bending part of the upper end of vibrator one and the frequency band broadening receiving vibrator form a third matching gap; the gap between the right-angle bending of vibrator one and the juxtaposed lower end of vibrator two forms a fourth matching gap; the gap between the left-to-right extending end of the lower end of vibrator one and the extending end of the lower end of vibrator two forms a fifth matching gap.

[0005] The described metal sheet digital TV receiving antenna is characterized in that the metal sheet body is in a helmet shape.

[0006] The described metal sheet digital TV receiving antenna is characterized in that vibrator one and vibrator two are in a leaf shape and are arranged on both sides in a petal shape.

[0007] By adopting the present utility model, the first oscillator, the second oscillator and the frequency band broadening receiving oscillator combination are used to achieve broadband reception of terrestrial digital TV signals; the first matching slot, the second matching slot, the third matching slot, the fourth matching slot and the fifth matching slot form broadband impedance matching; the TV signals are received by the first oscillator, the second oscillator and the frequency band broadening receiving oscillator, and then output through the feeding point; due to the small volume of the designed antenna but the utilization of the induced electric waves, as well as the broadband matching of the relatively large metal sheet and multiple slots, the beneficial effects of realizing broadband TV signal reception with small volume and high gain, and reducing the packaging cost and transportation cost are achieved. Description of the Drawings

[0008] Figure 1 It is a schematic diagram of the present utility model.

[0009] The numbers in the figure indicate: the first oscillator 1, the frequency band broadening receiving oscillator 2, the third matching slot 3, the second oscillator 4, the second matching slot 5, the fourth matching slot 6, the feeding point 7, the fifth matching slot 8, and the first matching slot 9. Detailed Embodiments

[0010] Next, specific embodiments of the present utility model will be combined to completely describe the technical solutions of the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0011] Referring to Figure 1 , the metal sheet digital TV receiving antenna includes a metal sheet body. In the middle of the body are the first oscillator 1 and the second oscillator 4 arranged left and right. There is a frequency band broadening receiving oscillator 2 between the first oscillator 1 and the second oscillator 4; the upper end of the first oscillator 1 extends upward and bends from left to right to the upper end of the second oscillator 4, and they are not connected; the lower end of the first oscillator 1 extends downward from left to right and bends at a right angle, and is juxtaposed with the lower end of the second oscillator 4. After juxtaposing, the lower end of the second oscillator 4 extends from right to left and wraps the right-angle bending part of the first oscillator 1, and the juxtaposed part is provided with the feeding point 7 of positive and negative poles; the two sides of the frequency band broadening receiving oscillator 2 are in an inner arc shape and are connected to the outer arc-shaped sides on one side of the first oscillator 1 and the second oscillator 4 to form the first matching slot 9 and the second matching slot 5; a third matching slot 3 is formed between the upward and left-to-right extending and bending part of the upper end of the first oscillator 1 and the frequency band broadening receiving oscillator 2; a fourth matching slot 6 is formed in the gap between the right-angle bending of the first oscillator 1 and the juxtaposed lower end of the second oscillator 4; a fifth matching slot 8 is formed in the gap between the left-to-right extending end of the lower end of the first oscillator 1 and the extending end of the lower end of the second oscillator 4.

[0012] By adopting the present utility model, the first oscillator 1, the second oscillator 4 and the bandwidth-expanded receiving oscillator 2 are combined to realize the reception of wideband terrestrial digital TV signals; the first matching slot 9, the second matching slot 5, the third matching slot 3, the fourth matching slot 6 and the fifth matching slot 8 form a wideband impedance matching; the TV signals are received by the first oscillator 1, the second oscillator 4 and the bandwidth-expanded receiving oscillator 2, and then output through the feeding point 7; due to the small size of the designed antenna but the utilization of induced electromagnetic waves, as well as the wideband matching of the relatively large metal sheet and multiple slots, the beneficial effects of realizing the reception of wideband TV signals with small size and high gain, and reducing the packaging cost and transportation cost are achieved.

Claims

1. A metal sheet digital television receiving antenna, comprising a metal sheet body, characterized in that: In the middle of the body are vibrator 1 and vibrator 2 arranged on the left and right, and there is a band-widening receiving vibrator in the middle of vibrator 1 and vibrator 2; the upper end of vibrator 1 extends upward and bends from left to right to the upper end of vibrator 2, and they are not connected; the lower end of vibrator 1 extends downward from left to right and bends at a right angle, and is parallel to the lower end of vibrator 2, and the lower end of vibrator 2 extends from right to left after being parallel and wraps the right-angled bent part of vibrator 1, and the parallel parts are provided with positive and negative feeding points; band-widening receiving vibrator; the upper end of vibrator 1 extends upward and bends from left to right to the upper end of vibrator 2, and the lower end of vibrator 2 extends downward from left to right and bends at a right angle, and is parallel to the lower end of vibrator 2, and the lower end of vibrator 2 extends from right to left after being parallel and wraps the right-angled bent part of vibrator 1, and the parallel parts are provided with positive and negative feeding points; The two sides of the wide receiving vibrator are in the shape of inner arcs, which are connected with the outer arc sides on one side of vibrator one and vibrator two to form the first matching gap and the second matching gap; the third matching gap is formed between the curved part extending upward from left to right at the upper end of vibrator one and the band widening receiving vibrator; the gap between the right-angle bend of vibrator one and the lower end of vibrator two constitutes the fourth matching gap; the gap between the extending end of the lower end of vibrator one from left to right and the extending end of the lower end of vibrator two constitutes the fifth matching gap.

2. The metal sheet digital television receiving antenna according to claim 1, characterized in that: The metal sheet body is in the shape of a helmet.

3. The metal sheet digital television receiving antenna according to claim 1, characterized in that: The vibrator 1 and the vibrator 2 are leaf-shaped and arranged on both sides like petals.

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