KR20020045395A - A housing for Low noise block down converter - Google Patents

Abstract

PURPOSE: A housing for a low noise blockdown converter is provided to minimize an effect on a circuit by reducing a thickness and a weight of the housing. CONSTITUTION: The housing for a low noise blockdown converter includes a radio wave absorbing part(100) and a body(200). The radio wave absorbing part(110) includes a feed hone(110) installed at a focus of a radio wave reflected by a parabola antenna and a waveguide(120) connected with the feed hone for transferring radio waves collected at the feed hone(110). The feed hone(110) and the waveguide(120) are integrally formed. The body(200) is connected with a side portion of the waveguide(120) by a connecting member(210). The connecting member(210) includes a protrude which is combined with a fixing groove of the body(200).

Description

A housing for Low noise block down converter}

The present invention relates to a housing for an LNB (Low Noise Blockdown Converter) installed in a parabolic antenna for receiving a satellite broadcasting signal emitted from a broadcasting station and transmitting the signal to a broadcast broadcasting receiver.

Generally known satellite broadcasting, when a broadcast station emits a broadcast signal to the satellite and receives the broadcast signal from the satellite and reflects to each antenna at a position on the ground, the signal reflected by the antenna is a receiver connected to this battery ( Received by SVR (Satellite Video Receiver) and automatically tuned in. At this time, the broadcasting signal sent from the satellite is first down (down) the frequency at the L & B of the parabola antenna and sent to the broadcast receiver, then tunes the signal in the tuner of the satellite broadcast receiver, demodulates the signal tuned in the tuner After that, the video and audio are reproduced through a television connected to the satellite broadcasting receiver.

In connection with such a technology, the LNB housing for receiving the radio wave (KU-BAND: 10-12 GHz) transmitted from the satellite on the ground has a horn 10 and a waveguide 20 as shown in FIGS. 1A, B, and C. ) And the body 30 is formed integrally with the die-casting (Die-Casting) method, the body 30 is a signal down to a predetermined frequency by a low noise amplifier (not shown) installed inside the body 30 It is made of a configuration to be delivered to the broadcast receiver (not shown) through the connector 40 protruding on one side of the.

In addition, the linear wave reflected by the parabolic antenna and collected in the horn 10 is composed of a plurality of electronic components connected to each other while being fixed to the body 30 by being converted into a horizontal wave and a vertical wave while being introduced through the waveguide 20. The low noise amplification unit (not shown) is to be transmitted, the signal generated in the low noise amplification unit of the body 30 is to be delivered to the satellite broadcasting receiver through a connector 40 connected to one side of the body (30).

However, in the above-described LNB housing, the horn 10, the waveguide 20, and the body 30 are integrally formed by a die casting process so that the weight of the housing 50 is increased, and the mold is complicated and mass-produced. When a large number of molds are required, the thickness of the housing 50 is increased, the weight is increased, and the flattening of the product is difficult, which affects the circuit characteristics, thereby lowering the reliability, and the mold structure is complicated, thereby increasing productivity. Of course, there is a disadvantage in that the production cost increases.

The present invention is to improve the various problems as described above, the object of the present invention is to simplify the mold to mass production, to minimize the thickness of the housing to reduce the weight, to minimize the impact on the circuit characteristics by the flattening of the product It is to provide an L & B housing.

1A, B, and C are schematic diagrams showing a conventional L & B housing

Figure 2 is a side structural view showing the L & B housing in accordance with the present invention

Figure 3 is a side cross-sectional structural view showing the El Navi housing in accordance with the present invention

Figure 4 is a side cross-sectional structural view showing a housing according to another embodiment of the present invention

Explanation of symbols on the main parts of the drawings

110 ... Feedhorn 120 ... Waveguide

200 body 220 protrusion

230 ...

300 ... Housing

As a technical means for achieving the above object, the present invention, the radio wave absorption is integrally formed with a feed horn which is installed at the focus of the radio wave reflected from the antenna and a waveguide connected to the feed horn to transmit the radio waves concentrated in the feed horn Wealth,

By connecting the waveguide and the connecting means absorbs the signal transmitted through the waveguide, and by providing an L NB housing comprising a body to be formed by the press.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 2 is a side structural view showing the L & B housing according to the present invention, Figure 3 is a side cross-sectional structural view showing the L & B housing according to the present invention, Figure 4 is a housing according to another embodiment of the present invention As the side cross-sectional structural view of the present invention, the radio wave absorbing part 100 and the body 200 is made.

The radio wave absorbing part 100 is connected to a feed horn 110 and the feed horn 110 which are installed at a focal point of the reflected radio wave when the radio wave from the satellite is reflected from the parabola antenna, and the feed horn 110. The waveguide 120 which transmits the radio waves collected in the waveguide) is integrally formed by the die casting method.

The body 200 connected to the waveguide 120 is connected to one side of the waveguide 120 through the connecting means 210 and is formed by press working.

The connecting means 210 is a protrusion 220 which is integrally formed in the waveguide 120 when the protrusion 220 is inserted into the fixing groove 230 of the body 200 to the protrusion 220 which is inserted into the body 200. Screw 250 is made of a configuration that is coupled to be fixed.

On the other hand, the connecting means 210, the high information 240 is formed integrally protruding on one side of the body 200 by the cogging around the end of the high information 240 when the waveguide 120 is inserted therein It is made up of fixed configuration.

Referring to the operation of the present invention made of such a configuration as follows.

As shown in FIGS. 2 to 4, feed horns are formed by die-casting casting, which is made of aluminum or zinc alloy and pressurizes the molten water after pouring so that the precision after molding is high so that mechanical finishing is unnecessary. 110 and the waveguide 120 is integrally molded.

In this case, when the protrusion 220 integrally formed in the waveguide 120 is inserted into the fixing groove 230 of the body 200, the screw 250 is coupled to the protrusion 220 inserted into the body 200. And the waveguide 120 and the body 200 are fixed to each other.

On the other hand, without the need to form a separate projection 220 in the waveguide 120, the hollow high information 240 is integrally formed on one side of the body 200 formed by the press working, and the high information ( After inserting the end of the conduit tube 120 into the 240, the end of the high information 240 is fixed to the conduit tube 120 by cogging operation to fix the waveguide 120 and the body 200.

As described above, only the feed horn 110 and the waveguide 120 are integrally formed by die casting so that mass production is possible by a simple mold structure, and the press horn is formed on the waveguide 120 in which the feed horn 110 is integrally formed. By connecting the body 200 to be produced separately by the connecting means 210 to minimize the weight.

In addition, the body 200 is formed by the press working, the surface thereof can be flattened to minimize the deterioration of characteristics due to diffuse reflection according to the surface roughness.

The housing 300 as described above, the feed horn 110 and the waveguide 120 to be integrally formed is connected to the body 200 is formed by the press process, the inside of the body 200, low noise amplification The unit is installed.

Looking at the operation of the LNB supported by the housing 300, first the satellite signal reflected through the parabola antenna is concentrated by the feed horn 110 is installed to be located in the focus portion of the reflected wave feed horn 110 It is transmitted to the body 200 through the waveguide 120 is integrally connected to.

Subsequently, the radio waves are absorbed by the reflection pins that receive the vertical and horizontal waves on the body 200, and are transmitted to the low noise amplifier on the substrate installed in the body 200, and the signal amplified by the low noise amplifier is the body ( 200) It is to be delivered to the satellite broadcasting receiver through a connector connected to one side.

As described above, according to the L & B housing according to the present invention, only the feed horn and the waveguide can be produced by die casting to simplify mass production, and the body connected to the waveguide can be produced by a press to reduce the weight of the whole housing. By the body flattened by the press, there is an effect of minimizing the effect of the circuit characteristics.

Claims (4)

A radio wave absorbing part 100 in which a feed horn 110 and a waveguide 120 connected to one side of the feed horn 110 are integrally formed; The El Navi housing, characterized in that it comprises a body 200 is integrally connected to the waveguide 120 through a connecting means 210 According to claim 1, The connecting means 210, When the projection 220 is projected to the waveguide 120 is inserted into the fixing groove 230 formed in the body 200 to be coupled by a screw 250 El Navi housing, characterized in that The method of claim 1, wherein the connecting means 210, the high information 240 is formed integrally protruding on one side of the body 200 to be fixed by cogging when the waveguide 120 is inserted into the inside. Ell cost housing The housing of claim 1, wherein the feed horn 110 and the waveguide 120 are integrally formed by die casting.