CN2159637Y

CN2159637Y - Signal receiver

Info

Publication number: CN2159637Y
Application number: CN93207988U
Authority: CN
Inventors: 蔡亮
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-04-01
Filing date: 1993-04-01
Publication date: 1994-03-23
Anticipated expiration: 2003-04-01

Abstract

The utility model discloses a signal receiver, particularly a signal receiver whose function is the same as the function of the television antenna. The signal receiver is composed of a signal input terminal, a radio-frequency signal isolator, a filter, an attenuator, a signal coupler, a power supply output terminal, and a signal output terminal. The signal receiver has simple use; the signal receiver can not be influenced by weather; users don't need to regulate the direction of the utility model and users can receive good signal. The signal receiver can widely used for the city and the countryside. The utility model still more is suitable for the medium size town and the small size town and the extensive rural area.

Description

Signal receiver

The utility model relates to a kind of signal receiving device, especially identical with television antenna function signal receiving device.

People see TV, must use corresponding antenna just can see image, and the quality of image directly is subjected to the influence of aerial position.At present institute generally the antenna of use two classes are arranged; One class is an exterior aerial, and it can be divided into common antenna and single household antenna again; Another kind of is domestic aerial.From the best results of seeing common antenna qualitatively of image, the domestic aerial effect is relatively poor.For not possessing the user that common antenna is installed, outdoor single household antenna or domestic aerial can only oneself be set, yet all there is defective separately at present in these two kinds of antennas.The problem that the single household exterior aerial at first runs into is the frame height, there is not certain height, the signal that just can not receive, it is bigger that next high antenna of frame is influenced by nature, whenever blowing, antenna is easy to change direction, has influenced view reception effect like this, and must adjust behind the wind, bring great inconvenience to use.

The purpose of this utility model provides a kind of signal receiving device, and the use of this device is not subjected to natural the influence, and need not to adjust direction, and its effect is better than domestic aerial and outdoor single household antenna.

Solution of the present utility model is: for the very strong area of signal strength then signal receiving device formed by signal input part, attenuator, filter, signal coupler, signal output part, radiofrequency signal isolator and power output end; For the area a little less than the signal strength then signal receiving device formed by signal input part, attenuator, filter, amplifier, high-voltage isolator and signal coupler, signal output part, radiofrequency signal isolator and power output end.

The operation principle of this signal receiving device is: TV signal is to air-launched with RF-wise, and the object of any metal object or other conduction can both induce the rf wave in space, also exception can be received electric wave to general lighting electrical network (220 volts of AC network) not, this device is exactly to manage the radiofrequency signal of sensing on the electrical network is taken out, through signal processing and amplification, be fed into the high head of television set then, thereby realize watching of TV programme.

The sort signal receiving system in use, only need its signal input part is inserted on any one socket of indoor 220 volts of communication power supplies, extremely easy to use, saved the worry of Installation and Debugging, and have the effect of common antenna, be particularly useful for away from the user in the area of TV station or do not have the user of common antenna.

Fig. 1 is the external form figure of signal receiving device of the present utility model;

Fig. 2 is the theory diagram of this device of no amplifier;

Fig. 3 is a manipulated or operated apparatus shown in Figure 2;

Fig. 4 is the theory diagram that this device of amplifier is arranged;

Fig. 5 is a manipulated or operated apparatus shown in Figure 4.

With reference to the accompanying drawings, signal receiving device of the present utility model is described in detail.

At first referring to Fig. 1, this signal receiving device 12 comprises the adjusting knob 13 of signal input part 1, signal output part 5, power output end 7 and regulated attenuator.

Fig. 2 is the theory diagram of this signal receiving device of no amplifier, and this signal receiving device comprises signal input part 1, attenuator 2, filter 3, signal coupler 4, signal output part 5, radiofrequency signal isolator 6 and power output end 7.Fig. 3 is a manipulated or operated apparatus shown in Figure 2, and signal input part 1 specifically is a kind of plug, and it directly inserts in 220 volts of AC Power supply socket, and signal input part 1 also comprises capacitor C ₁And C ₂, in order to take out signal.220 volts of alternating currents are divided into two the tunnel, the one tunnel through radiofrequency signal isolator 6 with to television set 11 power supplies, and from another road by taking out radiofrequency signal after the signal processing.Said radiofrequency signal isolator 6 is by inductance coil L ₁And L ₂Form; Because television set is color television set particularly, generally adopt Switching Power Supply, and do not re-use traditional power transformer, so its " ground wire " in fact communicates with AC network, and the radiofrequency signal of this device is directly to take from AC network, so in order to prevent that radiofrequency signal by " ground wire " institute bypass of television set, must be provided with the radiofrequency signal isolator.Another road comprises attenuator 2, filter 3, signal coupler 4 and signal output part 5.Attenuator 2 is a variable resistor W, suitably adjusts variable resistor W and can make this receiving system adapt to the different television channel of radiofrequency signal field intensity.Filter 3 is by capacitor C ₃, C ₄And inductance coil L ₃, L ₄Form, its effect is the various interference signals beyond the filtering radiofrequency signal.Signal coupler 4 is a capacitor C ₅

Fig. 4 is the theory diagram that this signal receiving device of amplifier is arranged, and this device is made of signal input part 1, filter 3, attenuator 2, amplifier 8, signal coupler 4 and high-voltage isolator 9, signal output part 5, radiofrequency signal isolator 6, power output end 7 and amplifier power supply circuits 10.Fig. 5 is a manipulated or operated apparatus shown in Figure 4, and it has represented the annexation of each parts and the components and parts of forming each parts.Different with Fig. 3 is this device is provided with amplifier 8, to the circuit 10 and the high-voltage isolator 9 of amplifier 8 power supplies.Here amplifier 8 can be universal.Power supply circuits 10 among the figure have for clarity sake provided a concrete scheme, other power supply also can adopt, for example use dry cell or be equipped with pressurizer available on the market also passable, perhaps directly voltage stabilizing circuit is located in this device, these all are in the knowledge category of those of ordinary skill.Identical among signal input part 1 among Fig. 5, attenuator 2, filter 3, signal coupler 4, signal output part 5, radiofrequency signal isolator 6, power output end 7 and Fig. 3 no longer is repeated in this description here.Amplifier ［ 8 ］ is located at the second tunnel signal coupler ［ 4 ］ before, and high-voltage isolator ［ 9 ］ is located between signal coupler ［ 4 ］ and the signal output part ［ 5 ］.According to shown in Figure 5, the high-voltage isolator 9 among Fig. 5 is by resistance R ₃, R ₄And coil L ₅, L ₆Form; And power supply circuits 10 are by C ₆, C ₇, C ₈, C ₉, resistance R ₁, R ₂And diode D ₁, D ₂Form.

The embodiment of above signal receiving device is described at television set; but this signal receiving device is not limited thereto; it can be used to receive the signal of other electronic products such as broadcast receiver; these are within the limit of power of the those of ordinary skill of this area, do not exceed protection range of the present utility model.Secondly, the filter in the circuit and the position of attenuator are interchangeable.

Claims

1, a kind of signal receiving device is characterized in that, it is made up of signal input part [1], attenuator [2], filter [3], signal coupler [4], signal output part [5], radiofrequency signal isolator [6] and power output end [7]; Said signal input part [1] divides two tunnel outputs, and first via process radiofrequency signal isolator [6] back is as power output end [7]; And the second the tunnel undertaken after the signal processing radiofrequency signal being supplied with signal output part [7] by attenuator [2], filter [3] and signal coupler [4].

2, signal receiving device according to claim 1, it is characterized in that it also comprises amplifier ［ 8 ］ and high-voltage isolator ［ 9 ］, amplifier ［ 8 ］ is located at the second tunnel signal coupler ［ 4 ］ before, and high-voltage isolator ［ 9 ］ is located between signal coupler ［ 4 ］ and the signal output part ［ 5 ］.

3, signal receiving device according to claim 2 is characterized in that, it also is provided with a circuit ［ 10 ］ for amplifier ［ 8 ］ power supply.