CN219436138U

CN219436138U - Vibrator for receiving television signal and digital television antenna with vibrator

Info

Publication number: CN219436138U
Application number: CN202223255489.6U
Authority: CN
Inventors: 蔡映叶
Original assignee: Shenzhen Bafeituo Technology Co ltd
Current assignee: Shenzhen Bafeituo Technology Co ltd
Priority date: 2022-12-02
Filing date: 2022-12-02
Publication date: 2023-07-28
Anticipated expiration: 2032-12-02

Abstract

The present utility model relates to the field of signal processing apparatuses, and more particularly, to a vibrator for receiving a television signal and a digital television antenna having the vibrator. The oscillator for receiving the television signal comprises a dual-mode main oscillator and an auxiliary oscillator, wherein the dual-mode main oscillator comprises a first receiving circuit and a second receiving circuit, one end of the first receiving circuit is connected with one end of the second receiving circuit, the circumference of the second receiving circuit is larger than that of the first receiving circuit, and a first coupling gap is arranged between the other end of the first receiving circuit and the other end of the second receiving circuit; a second coupling gap is arranged between the auxiliary oscillator and the second receiving circuit, and the other end of the auxiliary oscillator is connected with the grounding end of the circuit board. The digital television antenna is internally provided with the vibrator, a circuit board, a shell and a feeder line, wherein the circuit board is a PCB, the whole vibrator is printed on the PCB through a printing process, and the whole PCB is fixedly arranged in the shell. The utility model can improve the quality and performance of the antenna for receiving UHF frequency band low-frequency signals.

Description

Vibrator for receiving television signal and digital television antenna with vibrator

Technical Field

The present utility model relates to the field of signal processing apparatuses, and more particularly, to a vibrator for receiving a television signal and a digital television antenna having the vibrator.

Background

The oscillator is a component on the antenna, is called an antenna oscillator, has the functions of guiding and amplifying electromagnetic waves, and enables electromagnetic signals received by the antenna to be stronger. The antenna element is made of metal with better conductivity; typically a plurality of elements are arranged in parallel on the antenna. The oscillator of the antenna has the defects that the impedance bandwidth is narrow, the main receiving frequency is in the high-end frequency band of UHF and the low-end frequency band of UHF is not well received, so the antenna has the defect that improvement is needed.

Disclosure of Invention

The utility model provides a vibrator for receiving television signals, which aims to solve the technical problem that the low-end frequency band of UHF in the prior art is not well received.

In order to solve the technical problems, the utility model adopts the following technical scheme: the oscillator for receiving television signals comprises a dual-mode main oscillator and an auxiliary oscillator, wherein the dual-mode main oscillator comprises a first receiving circuit and a second receiving circuit, one end of the first receiving circuit is connected with one end of the second receiving circuit, the circumference of the second receiving circuit is larger than that of the first receiving circuit, and a first coupling gap is arranged between the other end of the first receiving circuit and the other end of the second receiving circuit; and a second coupling gap is arranged between the auxiliary oscillator and the second receiving line.

In the technical scheme, the auxiliary oscillator can be connected with the grounding end of the external circuit, and the first receiving circuit and the second receiving circuit can be connected with the external circuit through the feed point; when receiving signals, the dual-mode main oscillator can receive surrounding reflection or refraction wireless signals, so that repeated reception is caused to influence the signal definition; the signal received by the auxiliary oscillator can be used as a reference signal, and the reference signal participates in the process of processing the received signal of the dual-mode main oscillator by the external circuit. A second coupling gap is arranged between the auxiliary oscillator and the second receiving circuit, so that the auxiliary oscillator can be coupled with the dual-mode main oscillator, and a part of signals are reflected to the dual-mode main oscillator through the auxiliary oscillator, thereby increasing the receiving force of the dual-mode main oscillator and improving the overall receiving performance and stability of the oscillator; and the phenomenon that the received signal is unclear due to repeated reception of the same wireless signal caused by the fact that the reflected or refracted wireless signal is received by surrounding obstacles is avoided. In addition, since the perimeter (i.e., the effective length) of the second receiving line is greater than that of the first receiving line, the first receiving line is used for receiving the UHF-band high-frequency signal, and the second receiving line is used for receiving the UHF-band low-frequency signal; and the first coupling gap between the second receiving circuit and the other two ends of the first receiving circuit can couple the first receiving circuit and the second receiving circuit, so that the impedance bandwidth of the whole oscillator is increased, and the quality and performance of the whole oscillator for receiving UHF frequency band low-frequency signals are improved.

Preferably, the second receiving line includes a first connection portion and a second connection portion formed on the first connection portion, the second connection portion extending toward the other end of the first receiving line; the first connecting part is connected with the first receiving circuit; the distance between the second connection portion and the first receiving line gradually decreases toward the extending direction of the second connection portion.

Preferably, the first connecting portion is formed with a third connecting portion.

Preferably, the first coupling gap ranges from 2mm to 5mm.

Preferably, the auxiliary vibrator includes a fourth connection part, a vertical part formed on the fourth connection part, and an arc part formed on the vertical part and extending toward the other end of the second receiving line, the fourth connection part being located at lower parts of the first receiving line and the second receiving line; the distance between the vertical portion and the second receiving line gradually increases in a direction from the fourth connecting portion to the arc-shaped portion.

Preferably, the second coupling gap is 1/4 to 1/8 of the UHF wavelength of 585 MHz.

Further, a digital television antenna, including shell, feeder and above arbitrary oscillator and the circuit board of receiving television signal, auxiliary oscillator pass through feed point with the earthing terminal on the circuit board is connected, first receiving line with the one end that the second receiving line is connected through feed point with the feeder end on the circuit board, auxiliary oscillator first receiving line the second receiving line with circuit board is all fixed mounting is in the shell, set up the through-hole on the shell, the feeder is installed in the through-hole and with the circuit board is connected.

Preferably, an amplifying circuit is arranged on the circuit board, one end of the first receiving circuit connected with the second receiving circuit is connected with the amplifying circuit through a feed point, and the amplifying circuit is connected with the feed line.

Preferably, the circuit further comprises a pull rod, the pull rod is detachably arranged outside the shell, a pull rod connecting feed point is further arranged on the amplifying circuit, and the pull rod is connected with the amplifying circuit through the pull rod connecting feed point.

Preferably, the portable electronic device further comprises a hanging plate, wherein the hanging plate is detachably arranged on the shell; the hanging plate is provided with a mounting hole.

Compared with the prior art, the utility model has the beneficial effects that: the auxiliary oscillator is generally connected with the grounding end of the external circuit, and the received signal can be used as a reference signal which participates in the process of processing the received signal of the dual-mode main oscillator by the external circuit. A second coupling gap is arranged between the auxiliary oscillator and the second receiving circuit, so that the auxiliary oscillator can be coupled with the dual-mode main oscillator, and a part of signals are reflected to the dual-mode main oscillator through the auxiliary oscillator, thereby increasing the receiving force of the dual-mode main oscillator and improving the overall receiving performance and stability of the oscillator; and the phenomenon that the received signal is unclear due to repeated reception of the same wireless signal caused by the fact that the reflected or refracted wireless signal is received by surrounding obstacles is avoided. In addition, since the perimeter (i.e., the effective length) of the second receiving line is greater than that of the first receiving line, the first receiving line is used for receiving the UHF-band high-frequency signal, and the second receiving line is used for receiving the UHF-band low-frequency signal; and the first coupling gap between the second receiving circuit and the other two ends of the first receiving circuit can couple the first receiving circuit and the second receiving circuit, so that the impedance bandwidth of the whole oscillator is increased, and the quality and performance of the whole oscillator for receiving UHF frequency band low-frequency signals are improved.

Drawings

Fig. 1 is an overall construction diagram of a vibrator for receiving a television signal according to the present utility model;

FIG. 2 is an exploded view of the digital television antenna of the present utility model;

FIG. 3 is a block diagram of a hanging plate in the digital television antenna of the present utility model;

fig. 4 is a rear case structure diagram in the digital television antenna of the present utility model.

In the accompanying drawings: 1. a circuit board; 2. a dual-mode main oscillator; 21. a first receiving line; 22. a second receiving line; 221. a first connection portion; 222. a second connecting portion; 223. a third connecting portion; 224. a first coupling gap; 225. a second coupling gap; 3. an auxiliary vibrator; 31. a fourth connecting portion; 32. a vertical portion; 33. an arc-shaped portion; 4. a housing; 41. a front shell; 42. a rear case; 43. a groove; 5. a feed line; 6. a pull rod; 7. a hanging plate; 71. a mounting hole; 8. and fixing the feet.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the present patent; for the purpose of better illustrating the embodiments, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the actual product dimensions; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationship depicted in the drawings is for illustrative purposes only and is not to be construed as limiting the present patent.

The same or similar reference numbers in the drawings of embodiments of the utility model correspond to the same or similar components; in the description of the present utility model, it should be understood that, if there are orientations or positional relationships indicated by terms "upper", "lower", "left", "right", "long", "short", etc., based on the orientations or positional relationships shown in the drawings, this is merely for convenience in describing the present utility model and simplifying the description, and is not an indication or suggestion that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so that the terms describing the positional relationships in the drawings are merely for exemplary illustration and are not to be construed as limitations of the present patent, and that it is possible for those of ordinary skill in the art to understand the specific meaning of the terms described above according to specific circumstances.

The technical scheme of the utility model is further specifically described by the following specific embodiments with reference to the accompanying drawings:

example 1

As shown in fig. 1 and 2, a vibrator for receiving a television signal includes a dual-mode main vibrator 2 and an auxiliary vibrator 3, the dual-mode main vibrator 2 includes a first receiving line 21 and a second receiving line 22, one end of the first receiving line 21 is connected with one end of the second receiving line 22, the circumference of the second receiving line 22 is larger than that of the first receiving line 21, and a first coupling gap 224 is provided between the other end of the first receiving line 21 and the other end of the second receiving line 22; a second coupling gap 225 is provided between the auxiliary oscillator 3 and the second receiving line 22.

In this embodiment, the auxiliary oscillator 3 may be connected to the ground terminal of the external circuit, and may be used as a 0 level reference; the first receiving circuit 21 and the second receiving circuit 22 can be connected with an external circuit through a feed point; the dual-mode main oscillator 2 receives surrounding reflected or refracted wireless signals when receiving signals, thereby causing repeated reception and affecting the signal definition; the signal received by the auxiliary oscillator 3 can be used as a reference signal, and the reference signal participates in the process of processing the received signal of the dual-mode main oscillator 2 by the circuit board 1. A second coupling gap 225 is arranged between the auxiliary oscillator 3 and the second receiving circuit 22, so that the auxiliary oscillator 3 can be coupled with the dual-mode main oscillator 2, and a part of signals are reflected to the dual-mode main oscillator 2 through the auxiliary oscillator 3, thereby increasing the receiving force of the dual-mode main oscillator 2 and improving the overall receiving performance and stability of the oscillator; and the phenomenon that the received signal is unclear due to repeated reception of the same wireless signal caused by the fact that the reflected or refracted wireless signal is received by surrounding obstacles is avoided. In addition, since the second receiving line 22 has a larger circumference (i.e., an effective length) than the first receiving line 21, the first receiving line 21 is used for receiving the UHF-band high-frequency signal, and the second receiving line is used for receiving the UHF-band low-frequency signal; and the first coupling gap 224 between the second receiving line 22 and the other two ends of the first receiving line 21 can couple the first receiving line 21 and the second receiving line 22, so as to increase the impedance bandwidth of the whole oscillator, and further improve the quality and performance of the whole oscillator for receiving UHF frequency band low-frequency signals.

Further, as shown in fig. 1, in order to make the circumference of the first receiving line 21 larger than that of the second receiving line 22 in this embodiment, and to ensure that the second receiving line 22 can be coupled to the other two ends of the first receiving line 21, the second receiving line 22 may be configured to have a curved or bent shape, and a certain gap is kept between the two to enable the two to be coupled.

As shown in fig. 1, the second receiving line 22 includes a first connection portion 221 and a second connection portion 222 formed on the first connection portion 221, the second connection portion 222 extending toward the other end of the first receiving line 21; the first connection part 221 is connected to the first receiving line 21; the distance between the second connection portion 222 and the first receiving line 21 gradually decreases toward the extending direction of the second connection portion 222 to increase the impedance characteristic of the dual-mode main oscillator 2, improve the characteristics of the antenna UHF high frequency, and increase the receiving bandwidth of the oscillator.

In the present embodiment, the third connection portion 223 is formed on the first connection portion 221. The third connection portion 223 may be connected to an external circuit through a feed point, and the third connection portion 223 may also be directly connected to a feed line. The structure can lead the whole dual-mode vibrator 2 to be in a suspended state, thereby improving the impedance characteristic of the vibrator.

In this embodiment, the first coupling gap 224 ranges from 2mm to 5mm. This range is the optimal distance for the second receiving line 22 to be coupled to the other end of the first receiving line 21.

As shown in fig. 1, the auxiliary vibrator 3 includes a fourth connection portion 31, a vertical portion 32 formed on the fourth connection portion 31, and an arc-shaped portion 33 formed on the vertical portion 32 and extending in the other end direction of the second receiving line 22, the fourth connection portion 31 being located at the lower portions of the first receiving line 21 and the second receiving line 22; the distance between the vertical portion 32 and the second receiving line 22 gradually increases in the direction from the fourth connecting portion 31 to the arc-shaped portion 33. With this structure, the impedance characteristics of the vibrator can be expanded, and the quality of the received signal can be improved.

In this embodiment, the second coupling gap 225 is 1/4 to 1/8 of the UHF wavelength of 585 MHz.

Example 2

As shown in fig. 2, a digital television antenna includes a housing 4, a feeder 5, a vibrator in embodiment 1 and a circuit board 1, an auxiliary vibrator 3 is connected with a ground terminal on the circuit board 1 through a feed point, one end of a first receiving line 21 connected with a second receiving line 22 is connected with a feed line terminal on the circuit board 1 through a feed point, the auxiliary vibrator 3, the first receiving line 21, the second receiving line 22 and the circuit board 1 are fixedly installed in the housing 4, a through hole is provided on the housing 4, and the feeder 5 is installed in the through hole and connected with the circuit board 1. The feeder 5 may output the received signal to other devices, and the third connection portion 223 is connected to a feeder end on the circuit board 1. Further, the feeder end on the circuit board 1 is directly connected with the feeder 5; an amplifier can be externally connected to the end of the feeder line 5 to amplify weak received signals, so that the overall signal-to-noise ratio of the antenna is improved, and the signal amplification function is realized. The circuit board 1 of this embodiment is a PCB board, and the first receiving circuit 21, the second receiving circuit 22, and the auxiliary vibrator 3 are disposed on the PCB board by a printing process, and a plurality of first positioning holes are disposed on the PCB board, so that the whole vibrator is mounted inside the housing 4, and loosening is prevented.

Example 3

Similar to embodiment 2, as shown in fig. 2, the digital television antenna includes a housing 4, a feeder 5, a vibrator in embodiment 1 and a circuit board 1, an auxiliary vibrator 3 is connected with a ground terminal on the circuit board 1 through a feed point, one end of a first receiving line 21 connected with a second receiving line 22 is connected with a feed line terminal on the circuit board 1 through a feed point, the auxiliary vibrator 3, the first receiving line 21, the second receiving line 22 and the circuit board 1 are fixedly installed in the housing 4, a through hole is arranged on the housing 4, and the feeder 5 is installed in the through hole and connected with the circuit board 1. The difference is that:

in this embodiment, an amplifying circuit is disposed on the circuit board 1, and one end of the first receiving circuit 21 connected to the second receiving circuit 22 is connected to the amplifying circuit through a feed point, and the amplifying circuit is connected to the feed line 5. The amplifying circuit of the present embodiment has the functions of: and the received weak signals are amplified, so that the overall signal-to-noise ratio of the antenna is improved. In the prior art, most of the internal array sub-circuits of the antenna adopt a production and manufacturing mode formed by welding a PCB (printed circuit board) and a metal piece, and the circuits are relatively complex; in addition, the welding process has the problems of low processing speed, low production efficiency, unstable assembly caused by the welding process, easy shaking and the like due to the adoption of the traditional production method. Compared with the electronic product of the television antenna in the prior art, the circuit board 1 of the utility model is a PCB board, and oscillator circuits (namely the first receiving circuit 21, the second receiving circuit 22 and the auxiliary oscillator) and an amplifying circuit can be directly printed on the PCB board. During production, the printed circuit PCB is aligned and installed in the shell 4, and then is reinforced by a plurality of screws. The method can omit a welding process and improve the production efficiency and stability. The amplifying circuit in this embodiment is a part of the external circuit described in embodiment 1.

As shown in fig. 2, the amplifier further comprises a pull rod 6, the pull rod 6 is detachably mounted outside the shell 4, the amplifying circuit is further provided with a pull rod 6 connecting feed point, and the pull rod 6 is connected with the amplifying circuit through the pull rod 6 connecting feed point. The pull rod 6 may receive VHF band signals. When some areas need to receive the VHF band signal, the pull rod 6 is assembled, while some areas do not open the VHF band signal, and the pull rod 6 does not need to be installed. The amplifying circuit of the embodiment can amplify UHF frequency band and VHF frequency band, and output after low noise amplification is uniformly performed through the frequency mixing circuit. By doing so, the influence between the UHF frequency band and the VHF frequency band is reduced, so that the television antenna can independently receive the UHF frequency band and the VHF frequency band programs and the two frequency band programs so as to improve the viewing effect. The pull rod 6 can be a rotary pull rod, the angle can be adjusted at will, and the VHF frequency band signal can be received conveniently by adjusting the angle. In order to prevent the pull rod 6 from interfering with the UHF band during the reception of VHF signals, the pull rod 6 may be positioned on the side close to the auxiliary vibrator 3.

As shown in fig. 2 and 3, the portable electronic device further comprises a hanging plate 7, wherein the hanging plate 7 is detachably arranged on the shell 4; the hanging plate 7 is provided with a mounting hole 71. The whole housing 4 can be hung on the wall surface horizontally or vertically by using hanging plates 7. Specifically, as shown in fig. 4, a groove 43 is formed in the housing 4, a fixing leg 8 corresponding to the groove 43 is formed in the hanging plate 7, a second positioning hole is formed in the fixing leg 8, a corresponding third positioning hole is also formed in the groove 43, and screws are installed in the second positioning hole and the third positioning hole to fasten the second positioning hole and the third positioning hole. Further, the hanging plate 7 is provided with two fixing legs 8, and an interval is arranged between the two fixing legs 8, so that when the digital television antenna is fixed on the wall surface by using the mounting hole 71, a binding belt can penetrate through the interval, and the binding belt is bound on the fixing piece, namely, the whole digital television antenna can be fixed. As shown in fig. 3, the fixing leg 8 is hollow, so that on one hand, materials can be reduced, on the other hand, weight can be reduced, and the suspension stability of the whole device can be improved.

As shown in fig. 2, the casing 4 includes a front case 41 and a rear case 42, the entire vibrator is mounted inside the rear case 42, the front case 41 and the rear case 42 are integrated by ultrasonic fusion, and the ultrasonic fusion production has the advantages of high processing efficiency and waterproof function. Wherein, the inner side walls of the rear shell 42 and the front shell 41 are provided with corresponding positioning columns, and the first positioning holes of the PCB board are arranged in the positioning columns; to improve stability of the antenna element, the inner side walls of the rear case 42 and the front case 41 are provided with limiting plates to prevent vibration of the vibration isolator.

It is to be understood that the above examples of the present utility model are provided by way of illustration only and not by way of limitation of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. The oscillator for receiving television signals is characterized by comprising a dual-mode main oscillator (2) and an auxiliary oscillator (3), wherein the dual-mode main oscillator (2) comprises a first receiving circuit (21) and a second receiving circuit (22), one end of the first receiving circuit (21) is connected with one end of the second receiving circuit (22), the circumference of the second receiving circuit (22) is larger than that of the first receiving circuit (21), and a first coupling gap (224) is arranged between the other end of the first receiving circuit (21) and the other end of the second receiving circuit (22); a second coupling gap (225) is arranged between the auxiliary oscillator (3) and the second receiving line (22).

2. The vibrator for receiving television signals according to claim 1, wherein said second receiving line (22) comprises a first connection portion (221) and a second connection portion (222) formed on said first connection portion (221), said second connection portion (222) extending toward the other end of the first receiving line (21); the first connection part (221) is connected with the first receiving line (21); the distance between the second connection portion (222) and the first receiving line (21) gradually decreases toward the extending direction of the second connection portion (222).

3. A vibrator for receiving television signals according to claim 2, in which the first connection part (221) is formed with a third connection part (223).

4. The television signal receiving transducer of claim 1, wherein the first coupling gap (224) is in a range of 2mm to 5mm.

5. A television signal receiving element according to claim 1, wherein the auxiliary element (3) comprises a fourth connection portion (31), a vertical portion (32) formed on the fourth connection portion (31), and an arc-shaped portion (33) formed on the vertical portion (32) and extending in the direction of the other end of the second receiving line (22), the fourth connection portion (31) being located at the lower portions of the first receiving line (21) and the second receiving line (22); the distance between the vertical portion (32) and the second receiving line (22) gradually increases in a direction from the fourth connecting portion (31) to the arc-shaped portion (33).

6. The television signal receiving transducer of claim 1, wherein the second coupling gap (225) is 1/4 to 1/8 of a UHF wavelength of 585 MHz.

7. A digital television antenna comprising a housing (4) and a feeder (5), characterized in that it further comprises a vibrator for receiving television signals and a circuit board (1) according to any one of claims 1 to 6, wherein the auxiliary vibrator (3) is connected to a ground terminal on the circuit board (1) through a feed point, one end of the first receiving line (21) connected to the second receiving line (22) is connected to a feeder terminal on the circuit board (1) through a feed point, the auxiliary vibrator (3), the first receiving line (21), the second receiving line (22) and the circuit board (1) are fixedly mounted in the housing (4), a through hole is provided in the housing (4), and the feeder (5) is mounted in the through hole and connected to the circuit board (1).

8. The digital television antenna according to claim 7, characterized in that an amplifying circuit is provided on the circuit board (1), one end of the first receiving circuit (21) connected to the second receiving circuit (22) is connected to the amplifying circuit through a feed point, and the amplifying circuit is connected to the feed line (5).

9. The digital television antenna according to claim 8, further comprising a pull rod (6), wherein the pull rod (6) is detachably mounted outside the housing (4), a pull rod connection feed point is further provided on the amplifying circuit, and the pull rod (6) is connected with the amplifying circuit through the pull rod connection feed point.

10. The digital television antenna of claim 7, further comprising a hanging plate (7), said hanging plate (7) being detachably mounted on said housing (4); the hanging plate (7) is provided with a mounting hole (71).