KR19980042547A - Configuration of the projecting external antenna and fixed internal antenna for wireless portable remote terminal device - Google Patents

Abstract

In a wireless portable remote terminal apparatus having two antennas, there is provided an antenna configuration in which an antenna in use and an antenna in use have a good influence on each other. An external antenna means having an external antenna element capable of protruding / storing the main body, an internal antenna means having a ground portion, means for determining whether the external antenna element is protruding or housed, between the external antenna means and the internal antenna means Provided are a switching circuit for switching, and a printed circuit board capable of mounting external antenna means having a stored external antenna element and built-in antenna means on both sides. When the external antenna element is housed in the main body, the radio circuit on the printed circuit board is disconnected from the external antenna means and connected to the built-in antenna means, but when the external antenna element protrudes from the main body, the radio circuit on the radio circuit board is removed from the internal antenna means. Means are provided which are operative to be cut off and connected to the external antenna means.

Description

Configuration of the projecting external antenna and fixed internal antenna for wireless portable remote terminal device

The present invention relates to a configuration of an antenna for a wireless portable remote terminal device. In particular, the present invention relates to the construction of a protruding external antenna and a fixed internal antenna for a wireless portable remote terminal device which eliminates harmful interference between the external antenna and the internal antenna and has a good influence on each other.

In recent years, portability has been pursued in connection with a wireless portable remote terminal device. Therefore, the antenna at the time of carrying is changed into the antenna at the time of use. That is, since information is not frequently exchanged when carrying the wireless portable remote terminal device, a built-in antenna having good portability is used even if the gain is slightly reduced. On the other hand, since the exchange of information is frequently performed when the wireless portable remote terminal device is used, the antenna protrudes from the main body, thus securing the antenna gain. As a conventional example, there is Japanese Utility Model Application No. 4-31805 which discloses that when the protruding antenna protrudes from the main body, the built-in antenna is separated from the protruding antenna and when the protruding antenna is in the main body, the built-in antenna is connected to the protruding antenna.

1 shows an internal antenna 212, a feeder 213 of an internal antenna 212, an external antenna 221 capable of protruding / storing, metal fittings 222 of a feeder of an external antenna 221, and A conventional example of a wireless portable remote terminal device including brackets 223 and 224 for generating a signal for determining whether the external antenna 221 protrudes or is stored (the bracket 223 represents the external antenna 221). When connected to bracket 224 via, bracket 223 is in the H state).

The conventional wireless portable remote terminal device further includes a holding container 225 and a printed circuit board 201 which operate so that the external antenna 221 protrudes or is accommodated smoothly.

Moreover, the prior art example of such a wireless portable remote terminal device is a switch for switching between a main body 231 surrounding the wireless portable remote terminal device, a circuit block 234 of the wireless unit, and a connection to an external antenna and a connection to an internal antenna. It further includes a switch circuit 233. The antenna connected to the circuit block 234 of the radio section is switched by the changeover switch circuit 233 in accordance with the H state or the L state of the input unit T. A shield 232 of the circuit of the printed circuit board acts as a grounding means when the external antenna 221 protrudes from the body to improve the gain.

In the conventional example of Fig. 1, since the two antennas are configured independently of each other, the interference of each antenna deteriorates the antenna characteristics. Therefore, to prevent interference of each antenna, it is necessary to separate each antenna. That is, since the wireless portable remote terminal apparatus has a large volume, when the apparatus can be mounted in consideration of each antenna arrangement, the interference between the antennas is reduced. However, the interference between the antennas cannot be reduced due to the miniaturization of the wireless portable remote terminal device.

In addition, as described above, in order to improve the gain of the external antenna, a grounding means must be secured, and therefore, a grounding means must be formed on the printed circuit board, which has a problem that has a limited effect on the mounting of the device.

In view of the foregoing, it is an object of the present invention to eliminate interference between the projecting external antenna and the fixed internal antenna, and to improve the gain of the external antenna in use by using the internal antenna that is not in use when using the wireless portable remote terminal device. The present invention provides a configuration of a protruding external antenna and a fixed internal antenna for a wireless portable remote terminal device.

According to one aspect of the present invention, in order to achieve the above object, in the configuration of the projecting external antenna and the fixed built-in antenna for a wireless portable remote terminal device, it is supported by the enclosure (enclosure) of the wireless portable remote terminal device A first antenna means having an external antenna element that protrudes from the main body during use of the wireless portable remote terminal device and which can be stored within the main body while the wireless portable remote terminal device is not in use; And switching means for switching between a second antenna means composed of an antenna element, a printed circuit board on which a radio circuit is mounted, and a connection between the first antenna means and a radio circuit and a connection between the second antenna means and a radio circuit. Of protruding external antenna and fixed internal antenna for wireless portable remote terminal The Castle is provided.

According to another feature of the invention, the wireless circuit on the printed circuit board is cut off from the first antenna means and when it is recognized that the external antenna element of the first antenna means is housed in the main body. Means for connecting a second antenna means to the second antenna means, wherein the blocked first antenna means is fixed protruding external antenna and fixed internal for a wireless portable remote terminal device disposed below the surface of the ground means of the second antenna means. The configuration of the antenna is provided.

According to another feature of the invention, the radio circuit on the printed circuit board is cut off from the second antenna means and the external antenna element of the first antenna means is recognized as protruding from the main body. Means for connecting a circuit with the first antenna means, wherein the ground means of the blocked second antenna means includes a protruding external antenna and a fixed internal antenna for the wireless portable remote terminal device disposed as the ground of the first antenna means. The configuration of the antenna is provided.

According to another feature of the invention, when the external antenna element of the first antenna means protrudes from the main body, the first antenna means is not electrically connected to the second antenna means, When an external antenna element is housed in the main body, there is provided a configuration of a projecting external antenna and a fixed internal antenna for a wireless portable remote terminal device in which the first antenna means is electrically connected to the second antenna means.

According to still another aspect of the present invention, a protrusion external antenna and a fixed built-in antenna for a wireless portable remote terminal device in which determination of whether the first antenna means and the second antenna means are electrically connected by metal fittings is performed. A configuration is provided.

According to still another feature of the present invention, the first antenna means is an external antenna, and the second antenna means is provided with a configuration of a projecting external antenna and a fixed internal antenna for a wireless portable remote terminal device.

As described above, the configuration of the protruding external antenna and the fixed internal antenna for the wireless portable remote terminal device according to the present invention is an external antenna means having an external antenna element capable of protruding / storing with respect to the main body, and an internal antenna means having a ground portion. Means for determining whether the external antenna element is projected or housed, a switching circuit for switching between the external antenna means and the internal antenna means, and an external antenna means having a stored external antenna element and an internal antenna means on both sides It includes a printed circuit board that can be mounted.

Further, in the configuration of the projecting external antenna and the fixed internal antenna for the wireless portable remote terminal device, the external antenna means does not affect the internal antenna means in use when the external antenna element of the external antenna means is housed in the main body, but the external antenna means When the external antenna element protrudes from the main body, the internal antenna means acts as a ground means of the external antenna means in use, thereby improving the gain of the external antenna means.

The foregoing and other objects and novel features of the invention will be fully understood from the following detailed description with reference to the accompanying drawings. However, it is to be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of the invention.

1 is a diagram showing a conventional example of a wireless portable remote terminal device.

2A is a cross-sectional view illustrating a state in which an external antenna element is accommodated.

2B is a cross-sectional view illustrating a state in which an external antenna element protrudes.

3 shows a preferred embodiment of a wireless portable remote terminal device according to the present invention.

Explanation of symbols for the main parts of the drawings

101: printed board

111: ground

112: antenna element

113: feeder

114: short circuit board

121: external antenna element

122: feeder bracket

123, 124: bracket

125: external antenna

131 body

133: switch circuit of the antenna

134: wireless circuit

201: printed board

212: internal antenna

213: feed section of the built-in antenna

221: external antenna

222, 223, 224: bracket

225: Pussy

231 body

232: Shield

233: switching switch circuit

234: circuit block

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

2A is a cross-sectional view illustrating a state in which an external antenna element is accommodated in a main body. 2B is a cross-sectional view illustrating a state in which the external antenna element protrudes from the main body.

The configuration of the wireless portable remote terminal apparatus according to the present invention is described with reference to Figs. 2A and 2B. The wireless portable remote terminal apparatus includes a printed circuit board 101, built-in antenna means 111-114, and external antenna means 121-125. In the configuration, the built-in antenna means 111-114 may include a ground 111, an antenna element 112, a power supply portion 113, and a short circuit board 114 for connecting the ground 111 and the antenna element 112 to each other. It consists of. The external antenna means 121-125 determine whether or not they are interconnected or disconnected by determining whether the external antenna element 121, the feeder bracket 122, or the external antenna element protrudes or is stored in the main body. It consists of the brackets 123, 124, and the external antenna cylinder 125 for accommodating the external antenna element 121. In addition, reference numeral (a) denotes an internal antenna feeding unit, and reference numerals (c) and (d) denote determination units for determining whether the external antenna protrudes or is stored.

3 is an overall view showing an embodiment of the present invention. The wireless portable remote terminal device includes a main body 131, an antenna switch circuit 133, and a wireless circuit 134 of the wireless portable remote terminal device. In addition, in Fig. 3, reference numeral (a) denotes a built-in antenna feeder, and reference numeral (b) denotes a feeder of the external antenna means 121-125. Reference numerals (c) and (d) denote determination units for determining whether the external antenna element protrudes or is stored. These reference numerals are the same as those of FIGS. 2A and 2B.

Next, the operation of the embodiment of the configuration of the projecting external antenna and the fixed internal antenna for the wireless portable remote terminal device according to the present invention will be described with reference to Figs. 2A, 2B and 3.

2A is a cross-sectional view illustrating a state in which the external antenna element 121 is accommodated in the main body. The determination brackets 123 and 124 determine whether the external antenna element 121 protrudes or is stored in the main body 131. The bracket 123 is electrically connected to the bracket 124 through the external antenna element 121. Therefore, the H signal of the bracket 124 is input to the input portion A of the switch circuit 133 shown in FIG. 3 through the bracket 123. By this input, the input of the radio circuit 134 is connected to the feed part a of the built-in antenna means 111-114, and the built-in antenna means 111-114 are put into use. At this time, the external antenna means 121-125 are in an unused state as unnecessary antennas. Since the external antenna means 121-125 are disposed just below the surface of the ground means of the built-in antenna means 111-114 so as not to affect the antenna element 112, the required characteristics can be ensured.

2B is a cross-sectional view illustrating a state in which the external antenna element 121 protrudes from the main body. The determination brackets 123 and 124 may determine and display whether the external antenna element 121 protrudes or is stored in the main body. The metal fittings 123 are not electrically connected to the metal fittings 124, and thus the L signal is input to the input unit T of the switch circuit 133 shown in FIG. By this input, the input of the radio circuit 134 is connected to the feed part b of the external antenna means 121-125, and the external antenna means 121-125 are in a use state. At this time, the built-in antenna means 111-114 are in an unused state as unnecessary antennas. The built-in antenna means 111-114 have the function of the grounding means of the external antenna means 121-125, thus contributing to the gain improvement of the external antenna means 121-125.

While the preferred embodiments of the present invention have been described using specific conditions, it is to be understood that such techniques are illustrative only and that the invention is susceptible to various changes and modifications without departing from the spirit or scope of the appended claims.

As described above, the configuration of the projecting external antenna and the fixed internal antenna for the wireless portable remote terminal device according to the present invention can realize the improvement of the characteristics of each antenna in a small space, and thus the present invention provides a It is a useful technique for miniaturization.

Claims (6)

In the configuration of the projecting external antenna and the fixed internal antenna for a wireless portable remote terminal device, An external body supported by an enclosure of the wireless portable remote terminal device and protruding from the main body when the wireless portable remote terminal device is in use, and stored in the main body while the wireless portable remote terminal device is not in use. First antenna means having an antenna element; A second antenna means composed of a ground and an antenna element that can be received in the main body; A printed circuit board on which a radio circuit is mounted; And Switching means for switching between the connection between the first antenna means and the radio circuit and the connection between the second antenna means and the radio circuit Including, And said printed circuit board is interposed between said first antenna means and said second antenna means when said external antenna element of said first antenna means is housed in said body. And configuration of a fixed internal antenna. The method of claim 1, The radio section circuit on the printed circuit board before connecting the radio section circuit on the printed circuit board with the second antenna means when it is recognized that the external antenna element of the first antenna means is housed in the main body. Means for shielding the antenna from the first antenna means More, And wherein the blocked first antenna means is disposed below the surface of the ground means of the second antenna means. The method of claim 1, The radio section circuit on the printed circuit board before connecting the radio section circuit on the printed circuit board with the first antenna means when the external antenna element of the first antenna means is recognized as protruding from the main body. Means for blocking the antenna from the second antenna means More, And a grounding means of the second antenna means is arranged as a grounding means of the first antenna means. 3. The apparatus according to claim 2, wherein when the external antenna element of the first antenna means protrudes from the main body, the first antenna means is not electrically connected to the second antenna means, but the external of the first antenna means. And the first antenna means is electrically connected to the second antenna means when the antenna element is housed in the main body. The method of claim 2, wherein the determination of whether the electrical connection between the first antenna means and the second antenna means is made by metal fittings of the projecting external antenna and fixed internal antenna for a wireless portable remote terminal device. Configuration. 2. The configuration of the protruding external antenna and fixed internal antenna for a wireless portable remote terminal device according to claim 1, wherein the first antenna means is an external antenna and the second antenna means is an internal antenna.