KR20010005135A - monoblock type antenna-duplexer - Google Patents

Abstract

PURPOSE: A monoblock type antenna duplexer is provided to simplify a circuit construction by realizing an antenna and a duplexer in one dielectric block. CONSTITUTION: A monoblock type antenna duplexer comprises a dielectric block(10) which has an electrode formed on a surface. An antenna hole(34) which consists of a plurality resonator holes(32) and an antenna terminal(AT) is formed in the dielectric block(10). Inner electrodes(36,38) are integrated on inner sides of the holes(32,34), and are electrically connected to coupling patterns(50a,50b), respectively.

Description

Monoblock type antenna-duplexer

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an integrated antenna duplexer for a mobile communication terminal used in an ultra high frequency band, and more particularly, to a front end antenna of a terminal and a duplexer that simultaneously performs reception and transmission through the antenna. Is implemented in one dielectric block, it is very easy to miniaturize the components for the terminal, and in particular, it is easy to install and assemble the components by the set, and to the integrated antenna duplexer which can reduce the manufacturing cost by reducing the number of components. It is about.

BACKGROUND ART [0002] In the mobile communication terminal, which is rapidly increasing in use, a single antenna for transmitting and receiving ultra high frequency signals and a duplexer for transmitting and receiving frequency signals through the antenna are generally provided. Is a filter for separating transmission and reception radio waves, and is configured as a transmitting end filter, a receiving end filter, and a matching circuit, and the receiving end filter has pass and stop characteristics for receiving and transmitting frequencies, and vice versa. The filter is configured to have pass and stop characteristics for the transmit and receive frequencies.

In addition, although not shown in the drawing, in the conventional duplexer, as a plurality of resonators implemented as separate dielectric blocks having resonator holes, they are configured as a capacitor for implementing a Tx (Rx) filter and a matching circuit. In the case of using the same resonator, it is difficult to miniaturize components, and nowadays, the use of an integrated duplexer that implements a transmitter and a receiver filter in one dielectric lock is becoming common in order to provide ultra miniaturization of a mobile communication terminal.

On the other hand, in the antenna used with the duplexer to enable the frequency transmission and reception in the wireless terminal, it is common to use a monopole antenna and a helical antenna, such antennas are formed in the duplexer The antenna is connected to the antenna terminal, but the antenna is in a separated state, which is a major obstacle to miniaturization of the terminal.

In addition, in order to solve this problem, that is, a surface mount antenna (SMD) antenna for miniaturization of the antenna itself is disclosed by U.S. Patent 5668557 (1997.11.09) by Kazunari, but the antenna characteristics of the surface mount antenna as described above. There are a number of problems with the difficulty of commercialization, there are many problems in miniaturizing the antenna element used in the wireless terminal.

SUMMARY OF THE INVENTION The present invention has been made to improve the above-mentioned problems, and an object of the present invention is to implement a terminal antenna and a duplexer for simultaneously receiving and transmitting through the antenna in one dielectric block. It is an object of the present invention to provide an integrated antenna duplexer that can be easily miniaturized, and in particular, can be easily set and assembled and assembled, and can be manufactured by reducing the number of parts.

1 is a front perspective view showing the inventor of the integrated antenna duplexer

Figure 2 is a rear perspective view showing the inventor of the integrated antenna duplexer

3A and 3B, the integrated antenna duplexer of the present invention is a front perspective view showing an open surface of an antenna stage and an antenna electrode

4 is an equivalent circuit diagram of the present inventors an integrated antenna duplexer.

5 is a front perspective view of another embodiment of the present inventors' integrated antenna duplexer.

Figure 6 is a rear perspective view showing another embodiment of the present invention integrated antenna duplexer

Figure 7 is an equivalent circuit diagram showing another embodiment of the present invention integrated antenna duplexer

Figure 8 is a schematic perspective view showing a printed circuit board installation state of the present invention integrated antenna duplexer

Explanation of symbols on the main parts of the drawings

1 .... integrated antenna duplexer 10 .... dielectric block

20 .... protrusion 22 ... open face

30 .... hole 32 .... resonator hole

34 .. Antenna hole 40a, 40b .. Input / output electrode

50a, 50b .... Coupling electrode 60 .... Earthing pattern

AT .... Antenna Rx .... Receiver

Tx .... Transmitter

As a technical configuration for achieving the above object, the present invention, the electrode is formed on the surface, and a dielectric block having a projection,

A plurality of holes formed through the dielectric block;

Input and output electrodes formed by removing surface electrodes on both sides of one side of the dielectric block;

According to the present invention, an integrated antenna duplexer is formed around a hole inlet of a lower surface of the dielectric block and includes a plurality of coupling electrodes for implementing a transmitter, a receiver, and an antenna.

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

1 is a front perspective view showing an integrated antenna duplexer of the present invention, Figure 2 is a rear perspective view showing an integrated antenna duplexer of the present invention, Figure 3 (a) and (b) of the integrated antenna duplexer of the present invention, the antenna end Fig. 4 is an equivalent circuit diagram of the integrated antenna duplexer of the present invention.

First, Figure 1 and Figure 2 shows an integrated antenna duplexer (1) of the present invention, which is an integral implementation of an antenna for receiving an external signal or transmitting an external signal to a duplexer for transmitting and receiving a frequency signal. .

On the other hand, the dielectric block 10 is formed of a monoblock (monoblock type), which is not a plurality of dielectric blocks forming an individual resonator forms a duplexer, as described above, formed as one block for miniaturization of components The dielectric block 10 is usually made of ceramic, and the electrode 12 is integrally formed on the surface of the dielectric block 10.

In addition, the protrusion 20 is integrally formed at the center of the top surface 10a of the dielectric block 10 so as to be located at the front end of the wireless terminal so as to implement an antenna stage AT for receiving an external frequency and transmitting a signal to the outside. To form.

At this time, the reason for forming the protrusion 20 in the center of the dielectric block 10 is to implement the transmitting end (Rx) and the receiving end (Tx) on both sides of the dielectric block 10 around the center, the dielectric block A plurality of holes 30 are formed inside the 10.

That is, the plurality of holes 30 affect the realization of the characteristics of the integrated antenna duplexer 1, and the resonator hole 32 and the antenna stage, which implement the Tx (Rx) filter characteristics of the duplexer, are usually implemented. It is made as an antenna hole 34 to implement (AT), the resonator hole 32 is formed coaxially.

In addition, as shown in Figs. 1 and 2, six resonator holes 32a, 32b, 32c, 32d, 32e, and 32f for implementing the transmitting and receiving ends are configured in the present embodiment, but substantially The number may vary according to the characteristics of the antenna duplexer 1, and the resonator hole 32 is formed through the upper and lower surfaces 10a and 10b of the integrated dielectric block 10.

At this time, the antenna hole 34 is integrally formed by penetrating from the upper surface 20a of the protrusion 20 of the dielectric block 10 to the lower surface 10b of the dielectric block 20, and then, if necessary, another embodiment is performed. As will be explained by way of example, the number can be changed.

Thus, as shown in FIGS. 1 and 2, the monolithic dielectric block 10 formed of a monoblock includes a plurality of resonator holes 32 and an antenna terminal AT forming the transmitting and receiving terminals Tx and Rx. One antenna hole 34 is formed.

In addition, electrodes 36 and 38 are integrally formed on inner surfaces of each of the resonator holes 32 and the antenna holes 34, and the internal electrodes 36 and 38 are each resonator holes 32. ) And the inlet of the antenna hole 34, that is, the coupling electrode (coupling pattern) (50a, 50b) formed at a predetermined interval at the inlet of the lower surface (10b) of the dielectric block 10 is in electrical communication. Substantially, the surface electrode 12 of the dielectric block 10 formed around the inlet of each of the holes 32 and 34 is removed.

On the other hand, the coupling electrode 50a of the resonator hole 32 and the coupling electrode 50b of the antenna hole 34 couple the resonator hole 32 in a circuit manner, that is, to realize a coupling capacitor, thereby substantially making the duplexer ( The transmitter (Rx) and the receiver (Tx) of 1) are implemented, and finally, the characteristics of the duplexer 1 are determined. Similarly, the coupling electrode 50b of the antenna hole 34 also influences the characteristics of the antenna AT. To exert.

In particular, although not shown in detail, the coupling capacitor may be implemented by partially removing portions of the internal electrodes 36 and 38 of the holes 32 and 34 to adjust the characteristics of each stage.

Continue. As shown in FIG. 3, an open surface 22 in which the surface electrode 12 of the block 10 is partially removed from the top surface 20a of the protrusion 20 and the side surface 10d of the dielectric block 10 subsequent thereto. ) Is formed integrally, and the characteristics of the antenna terminal AT can be changed as the open surface 22. In particular, when the antenna electrode 22a is formed inside the open surface 22, the antenna electrode ( 22a) may improve the radiation characteristic of the antenna terminal AT while matching with the internal electrode 38 of the anna hole 34 of the dielectric block 10.

As a result, the characteristics of the antenna duplexer 1 are determined by each of the resonator holes 32, the antenna holes 34, and the coupling electrodes 50a and 50b of the dielectric block 10.

On the other hand, the duplexer 1 is composed of a surface-mounted type mounted directly on the printed circuit board 80, as shown in Figure 2, the surface electrode on both sides of one side (10c) of the dielectric block 10 Part 12 is removed to form input and output electrodes 40a and 40b.

At this time, the input and output electrodes 40a and 40b are separated from both ends of the coupling electrode 50a of the resonator hole 32 by a predetermined distance, and finally, between the electrode 40 and the coupling electrode 50b. An output capacitor is implemented, and thus the input and output 40a and 40b are connected to the circuit patterns 82a and 82b of the printed circuit board 80 so that the antenna duplexer 1 is simply surface mounted. .

In addition, a ground electrode 60a is integrally formed between the resonator holes 32d, 32e, and 32f of the dielectric block 10. As described above, the ground electrode 60a is also formed by the dielectric block 10. The surface electrode 12 is partially removed, and the ground electrode 60 is formed on the side surface electrode 12 of the dielectric block 10 to implement the ground circuit of the duplexer 1.

Figure 5 is a front perspective view showing another embodiment of the present invention integrated antenna duplexer, Figure 6 is a rear perspective view showing another embodiment of the present invention integrated antenna duplexer, Figure 7 is another embodiment of the present invention integrated antenna stage duplexer. It is an equivalent circuit diagram which shows the example.

As shown in FIG. 5 and FIG. 6, the greatest feature of another embodiment of the present invention penetrates to the top surface 20a of the protrusion 20 of the dielectric block 10 and to the bottom surface 10b of the dielectric block 10. It is to form two antenna holes (34a) 34b, in this case to implement the reception and transmission operation in each antenna hole (34a, 34b) at the antenna stage (AT), two antennas as described above The holes 34a and 34b have the advantage of widening the bandwidth of the antenna stage AT.

Similarly, an internal electrode 38 is integrally formed inside the two antenna holes 34a and 34b, and an open surface 22 is formed on the surface of the dielectric block 10 outside thereof. (22) makes it possible to change the characteristics of the antenna stage.

On the other hand, a coupling electrode 50b is formed around the inlet of the bottom surface 10b of the two antenna holes 34a and 34b, respectively, and the coupling electrode 50b is adjacent to both sides of the transmitting and receiving terminals Tx and Rx. ) Is matched with the coupling electrode 50a of the resonator holes 32c and 32d.

In this case, a ground electrode 60b is formed in the longitudinal direction between the two antenna holes 34a and 34b in the bottom surface 10b of the dielectric block 10 to form a ground circuit of the antenna terminal AT.

On the other hand, as shown in Figure 8, the integrated antenna duplexer (1) is the input and output electrode (40a) of the dielectric block 10 to the transmitting and receiving end circuits (82a) (82b) of the printed circuit board 80 ( 40b) may be connected to the antenna integrated duplexer 1 to be surface-mounted, and a protective cover 90 may be coupled to the bottom surface 10b in which the coupling electrode 50 and the ground electrode 60 are formed.

Accordingly, as can be seen in the above-described two embodiments of the present invention, the antenna and the duplexer of the wireless terminal are integrated into one component, thereby greatly contributing to the miniaturization of the component and the miniaturization of the terminal.

The integrated antenna duplexer according to the present invention is not limited to the above-described embodiment and the configuration of the drawings, the ordinary skilled in the art will be apparent that various modifications can be made within the scope of the technical idea of the present invention.

As described above, according to the integrated antenna duplexer of the present invention, an integrated dielectric duplexer which simultaneously performs reception and transmission through the front end antenna of the terminal and the antenna is implemented in one dielectric block, contributing to ultra miniaturization of components, and It is easy to install and use the parts by reducing the cost, while also reducing the cost of manufacturing parts.

Claims (17)

The electrode 12 is formed on the surface, the dielectric block 10 having a protrusion 20, A plurality of holes 30 formed through the dielectric block 10; Input and output electrodes 40a and 40b formed by removing surface electrodes 12 on both sides of one side surface 10c of the dielectric block 10; An integrated antenna duplexer, which is formed around the inlet of the hole 30 of the lower surface 10b of the dielectric block 10 and constitutes a plurality of coupling electrodes 50 for implementing a transmitter, a receiver, and an antenna. The integrated antenna duplexer according to claim 1, wherein the dielectric block (10) is composed of a mono-block. 3. The integrated antenna duplexer according to claim 2, wherein the dielectric block (10) is made of ceramic. According to claim 1, The protrusion part 20 is implemented to be integrally implemented in the block 10, the antenna end (AT) is projected to the central portion of the upper surface (10a) of the dielectric block 10 to be located at the tip of the terminal Integrated antenna duplexer, characterized in that 2. The block (10) according to claim 1, wherein the hole (30) comprises a plurality of resonant holes (32a) (32) (32c) ... and a block (10) for implementing a receiving end (Rx) and a transmitting end (Tx) in the block (10). Integrated antenna duplexer, characterized in that configured as an antenna hole (34) for transmitting and receiving by implementing an antenna (AT) in the 6. The integrated antenna duplexer according to claim 5, wherein the plurality of resonance holes 32 are formed through the upper and lower surfaces 10a and 10b of the dielectric block 10. 6. The integrated antenna duplexer according to claim 5, wherein the antenna hole 34 penetrates the upper surface 20a of the protrusion 20 and the lower surface 10b of the dielectric block 20. The antenna hole 34 of claim 5 or 7, wherein the antenna hole 34 formed through the upper surface 20a of the protrusion 20 and the lower surface 10c of the block 10 performs transmission and reception separately. An integrated antenna duplexer comprising two antenna holes 34a and 34b to enlarge the band of the stage AT. 6. The integrated antenna duplexer according to claim 1 or 5, wherein electrodes 36 and 38 are integrally formed on inner surfaces of the plurality of resonator holes 32 and the antenna holes 34. The integrated antenna duplexer according to claim 1 or 9, wherein the coupling electrode (50) is formed in series with the resonator hole (32) and the internal electrodes (36, 38) of the antenna hole (34). The surface electrode (12) of the block (10) according to claim 1, wherein the top surface (20a) of the protrusion (20) and the side (10c) of the dielectric block (10) successively improve the radiation characteristic of the antenna terminal (AT). The integrated antenna duplexer, characterized in that the open surface 22, which is partially removed), is formed integrally. 12. The antenna 22a according to claim 9 or 11, wherein the opening surface 22 further includes an antenna electrode 22a that is matched with an internal electrode 38 of the antenna hole 34 to improve radiation characteristics of the antenna terminal AT. Integrated antenna duplexer, characterized in that The integrated antenna duplexer according to claim 1, further comprising a ground electrode (60) formed between the coupling electrodes (50a, 50b) of the dielectric block (10). The integrated antenna duplexer according to claim 13, wherein the ground electrode (60a) is formed between the resonator hole coupling electrode (50a). 14. The integrated antenna duplexer according to claim 13, wherein the ground electrode (60b) is formed between the coupling electrodes (50b) of the antenna holes (34a) and (34b). The integrated antenna duplexer according to claim 13, wherein the ground electrode (60) is formed in series with the surface electrodes (12) formed on both side surfaces (10c) and (10d) of the dielectric block (10). The integrated antenna duplexer according to claim 1, wherein the input and output electrodes 40a and 40b are configured to implement input and output terminals between the coupling electrodes 50a around the adjacent resonator holes.