KR20040041132A - Connecting structure between Planar Antenna and Wireless Transceiver - Google Patents

Abstract

PURPOSE: A structure for connecting a wireless transceiver to an antenna is provided to minimize the loss between the wireless transceiver and the antenna by forming a new structure. CONSTITUTION: A structure for connecting a wireless transceiver to an antenna includes a wireless transceiver circuit board and a planar antenna(300). The wireless transceiver circuit board is directly connected to the planar antenna(300). The wireless transceiver circuit board and the planar antenna(300) are installed within one device. One side of the device including the wireless transceiver circuit board and the planar antenna(300) is opened to radiate the electromagnetic energy of a patch antenna. The patch antenna is adhered on the wireless transceiver circuit board by performing a soldering process. The patch antenna is electrically connected to the wireless transceiver circuit board by using a via hole(330).

Description

Connecting structure between Planar Antenna and Wireless Transceiver}

The present invention relates to a connection structure between a wireless transceiver and an antenna in a wireless communication system using an antenna for bidirectional communication. Typically, since there is a high frequency signal between them, the electrical performance is determined according to the connection structure. In other words, the longer the connection, the more attenuated the transmission and reception signal, which affects the performance of the wireless communication system, and is greatly affected by the method, structure, or medium of the connection. It is even more serious for terminals, small base stations or relays.

Typically, the wireless communication transceiver and the antenna has a structure as shown in FIG. Although there is an advantage in that the plane antenna 300 can be installed in a convenient place, the connector 110 and the cable 120 for connecting the instrument and the wireless communication device for protecting the antenna are long, so that the loss of the high frequency signal is inevitable. Not only does it naturally degrade electrical performance, but it also leads to a reduction in product price competitiveness due to component and equipment costs. In addition, since the plane antenna 300 and the wireless device 100 are configured separately, there is a disadvantage that the product scale becomes large.

In order to solve the above problems, as shown in FIG. 2, the planar antenna 300 is directly coupled with the board of the wireless transmission / reception apparatus, and then configured in one mechanism 210. At this time, a portion of the mechanism is removed so that energy radiated from the planar antenna 300 is released into the space. This can be easily applied when the plane antenna 300 is small due to the high frequency. FIG. 3 shows a planar antenna mounted to FIG. 2 and includes a radiation patch and a feed line 320. In particular, in order to connect to the wireless transmission and reception circuit, one end of the feed line 320 is made of a via hole (via hole, 330) to be directly soldered to the wireless transmission and reception circuit. 4 shows a structure in which the wireless transmission / reception circuit board 440 and the planar antenna 300 board are directly connected through the via hole 330. On the other hand, the ground plane and the ground plane of the plane antenna 300 of the wireless transmission and reception board 440 has a structure in which the surface and the surface in two-dimensional contact. As mentioned above, the two boards combined in FIG. 4 have a structure mounted in one device as shown in FIG. 2.

Therefore, the planar antenna 300 and the wireless transmitting / receiving device coupled in one structure in this structure have structural differences that are clearly distinguished from the conventional connection structure shown in FIG. 1, which shows excellent advantages in electrical performance, economy and productivity. .

1 is a connection structure between a conventional wireless transmitting and receiving device and a plane antenna

2 is a connection structure between a radio transceiver and a planar antenna according to the present invention.

3 is a structure of a plane antenna according to an embodiment of the present invention

4 is a plane antenna of a wireless transceiver board according to an embodiment of the present invention.

Furnace connection structure

Figure 5 is a wireless transceiver board and a plane antenna according to an embodiment of the present invention

Side view of connected structure

※ Description of main part of drawing

100-> conventional radio

110-> Connector for connecting antenna to wireless transceiver

120-> coaxial cable (cable) to connect to the antenna in the radio

140-> Patch for Radiating Flat Antenna

200-> coupled between the planar antenna and the radio transceiver according to the invention

3D Structure

210 Radio transmitting and receiving device and housing surrounding flat antenna

300-> common flat antenna

330-> bonding via hole

400-> Radio Transceiver and Flat Antenna

420-> Transmit / Receive Switch in Wireless Transceiver

440-> Wireless Transceiver Board

The configuration of the present invention is as follows.

2 shows a connection structure according to an embodiment of the present invention. Typically, the antenna structure applied to the present invention is applied to a two-dimensional planar antenna structure as shown in FIG. In FIG. 2, the planar antenna 300 is directly connected to the wireless transmission / reception board 440 as shown in FIG. 4 and mounted in one mechanical structure 210 as in FIG. 2. At this time, the position where the planar antenna 300 is attached has a structure in which the surface of the instrument 210 is removed in order to radiate electromagnetic energy into space in the radiation patch 140 of the planar antenna 300. That is, the planar antenna 300 and the wireless transmission / reception board 400 are mounted in the apparatus 210 shown in FIG. 2, and a part of the apparatus is opened for the high frequency radiation of the radiation patch 140. 3 shows a detailed structure of the planar antenna 300, the radiation patch 140 for radiating electromagnetic energy and the feed line 320 for supplying high frequency power, the connection for connecting to the wireless transmission and reception board 440 It consists of a via hole (330), and a board (340) composed of a dielectric and a ground conductor. 4 shows a structure in which the planar antenna 300 and the wireless transmission / reception board 440 are connected. Here, the wireless transmission and reception board 440 is on the upper side, the plane antenna 300 with the radiation patch 140 is two-dimensionally bonded between the board and the board from the lower side is made through the via hole 330 for bonding. Bonding between boards is done by soldering. The wireless transmission / reception board 440 includes a transmission circuit portion 410 for wireless communication, a reception circuit portion 430, a switch 420 for transmission and reception switching, a connection via hole 330, and a microstrip line for connecting them ( microstrip line, 450). These circuits and components are also mounted by soldering onto a board 440 consisting of a dielectric and ground plane. Figure 5 shows a side view of the structure according to the invention. The plane antenna 300 composed of the plane antenna board 340, the radiation patch 140, and the feed line 320 is located on the upper side and the wireless transmission and reception board 440 is located on the lower side. Bonding via holes 330 connect between these boards, and these two boards contain one mechanism 210. Meanwhile, as described above, a part of the mechanism 210 is opened to radiate electromagnetic energy from the radiation patch 140. Wireless transmission and reception circuits 410 and 430 and switch 420 circuits and microstrip lines 450 connecting them are mounted on the wireless transmission and reception board 440.

The present invention proposes a new structure between the transmitting and receiving circuit and the antenna of the wireless communication transmission and reception system and can minimize the loss between the antenna and the transmitting and receiving circuit in terms of electrical performance, as well as optimizing the performance as well as the conventional structure. It also offers the advantages of smaller system size and lower production cost or time than the separate configuration as shown in Fig. 1. In addition, as shown in FIG. 1, an economic advantage may be provided by not using a radome, which is a mechanism for protecting the connector 110, the coaxial cable 120, and the planar antenna 300. Therefore, the advantages of the present invention may be highlighted in a terminal such as a personal digital assistant (PDA), a notebook computer, an ITS application device, a global positioning system (GPS), and the like.

Claims (3)

Wireless communication transmission and reception system, characterized in that the wireless communication transceiver circuit device and the plane antenna is directly attached and mounted in a single device The apparatus structure of a wireless communication transmission / reception system according to claim 1, wherein one surface of the apparatus is opened to radiate electromagnetic energy of the patch antenna. The structure of a wireless communication transmission / reception system according to claim 1, wherein the patch antenna and the wireless transmission / reception circuit board are directly attached by soldering, and the circuits are connected to each other through via holes.