KR20120070414A - Cradle for terminal having the function of transmitting and receiving rf signal - Google Patents

Abstract

PURPOSE: A terminal holder having an RF signal trans-receiving function is provided to enable users to use various functions of a portable terminal with no limitations by improving the performance of an antenna. CONSTITUTION: A terminal holder having an RF signal trans-receiving function includes a transmitting and receiving antenna unit(100) and an intermediate antenna unit(200). The transmitting and receiving antenna unit includes an antenna(110) for transmitting and receiving external signals. The intermediate antenna unit includes an intermediate antenna(210) transmits the signals obtained from the transmitting and receiving antenna unit to a portable terminal mounted on the holder, and receives the RF signal transmitted from the portable terminal to the transmitting and receiving antenna unit.

Description

Cradle for terminal having the function of transmitting and receiving RF signal

The present invention relates to a terminal holder having an RF signal transmission / reception function, and more particularly, a transmission / reception antenna provided in the holder receives an external signal, and the relay antenna radiates RF to the internal antenna of the portable terminal, thereby performing antenna performance of the portable terminal. The terminal cradle having an RF signal transmission and reception function to improve the.

According to the development of the portable terminal, various functions are built in the portable terminal and various services are provided.

For example, DMB (Digital Multimedia Broadcasting), DAB (Digital Audio Broadcasting) for small portable terminals such as PMP (Portable Multimedia Player), PDA (Personal Digital Assistant), mobile phones, GPS (Global Positioning System) navigation, or vehicle terminals Various functions such as wireless internet and navigation function are built in.

These small portable terminals are small in size, easy to carry, and can provide services such as call, internet communication, and data download / upload anytime, anywhere. Accordingly, users can play MP3, video, game, video call, and LBS (Location). Based Services) can be used in real time.

However, the small portable terminal has been developed with the tendency to mount the built-in antenna to remove the antenna structure protruding out, and according to the portability and miniaturization trend, there is a problem that it is difficult to embed the antenna with sufficient performance due to the space constraints inside the terminal, The performance of the antenna may be further degraded due to a decrease in gain due to the miniaturization of the internal antenna and noise generated in the set.

That is, the gain of the antenna is determined by the size of the antenna. When only a small internal antenna is mounted inside the terminal set alone, the antenna gain may be lowered and the antenna performance may be lowered by the set noise. have. In particular, in the case of an antenna for receiving a weak signal such as GPS, satellite DMB, XM satellite radio, antenna characteristics may be further deteriorated.

In order to overcome this problem, an external antenna is connected to the portable terminal to improve the performance of the antenna. FIG. 1 illustrates various external antennas connected to the portable terminal.

For example, a navigation terminal used for a vehicle is provided with a GPS connection connector or a terrestrial DMB connector for an external antenna when the transmission / reception performance of the internal antenna is poor, so that the external antenna shown in FIG. 1 is directly connected to the connector of the terminal. It is improving the transmission and reception performance.

In addition, the vehicle terminal holder may include a function to improve the antenna performance of the portable terminal, Figure 2 shows a vehicle holder for improving the antenna performance according to the prior art.

The cradle 20 for a vehicle according to the related art shown in FIG. 2 has a structure in which the portable terminal 10 is detachable, and the connection terminal 15 of the portable terminal 10 is mounted on a portion where the portable terminal 10 is mounted. Is connected to the terminal 21 is formed.

An input / output terminal 25 is formed at a side of the vehicle cradle 20, and external antennas such as a terrestrial DMB antenna and a GPS antenna are connected through the input / output terminal 25.

As such, the vehicle holder 20 according to the related art shown in FIG. 2 may improve antenna performance of the portable terminal 10 mounted through an external antenna.

Furthermore, unlike the prior art illustrated in FIG. 2, the built-in antenna is provided inside the vehicle holder and the built-in antenna provided in the vehicle holder may be connected through a connector formed in the portable terminal to be mounted.

However, personal portable devices such as smartphones and tablet PCs have external antenna connectors or internal antennas and external antennas that can connect external antennas to improve performance by assisting the internal antennas due to internal space constraints due to the small size of the terminal. It is not equipped with an RF switch connector for switching the smartphone, and in the case of a smart phone, the terrestrial DMB is also designed as a built-in rod antenna that is directly pulled out from the terminal or mounted only on the outside because it is equipped with a connector for fastening only a removable rod antenna. It is designed as a structure that can not connect external terrestrial DMB antenna.

In addition, smartphones and tablet PCs are less than half the size of the GPS antenna or terrestrial DMB antenna due to internal space constraints, so the reception performance of the antenna is much lower.

Due to this, there are restrictions on the use of each function when using the terminal inside a vehicle, but the external antenna connector for applying the external antenna or the vehicle holder according to the prior art as described above is not provided in the portable terminal. Such a conventional technology cannot solve such a problem.

In particular, portable terminals such as smartphones and tablet PCs have many built-in antennas installed inside the terminals as they are equipped with multi-functions such as GPS, terrestrial DMB, WIFI, WIMAX, CDMA, etc. The signal interference is so great that it can be used as a personal handheld, but the shielding of the ground makes it very inefficient for use in vehicles with high electric noise, or the function is not available at all.

The technical problem to be solved by the present invention is to solve the problem that the limitations in executing various functions of the terminal due to the degradation of the antenna performance when the terminal is used in a region, building or vehicle where the corresponding received signal is weak. .

In particular, the main object of the present invention is to provide a terminal holder capable of transmitting and receiving RF signals so as to improve antenna performance of a portable terminal such as a smartphone or a tablet PC that cannot connect an external antenna.

In order to achieve the above technical problem, the present invention provides a RF signal to a portable terminal equipped with a transmission and reception antenna unit having an antenna for transmitting and receiving an external signal and a signal from the transmission and reception antenna unit in the cradle to which the terminal is detached. And a relay antenna unit having an antenna for receiving an RF signal radiated from the portable terminal and transmitting the received RF signal to the transmission / reception antenna unit, wherein the relay antenna unit includes an outer surface or an adjacent interior of a portion where the portable terminal of the holder is mounted. Terminal holder having an RF signal transmission and reception function, characterized in that formed in.

Here, the antenna provided in the relay antenna unit may be formed of any one of a non-directional monopole antenna, a PIFA type F-PCB antenna, a radiator antenna, or a ceramic chip antenna. The antenna may be formed as a directional patch antenna for directing the antenna embedded in the portable terminal.

Furthermore, a bias tee disposed between the transmission / reception antenna unit and the relay antenna unit may include a bias tee for synthesizing or separating an RF signal and a DC signal, and a power supply unit supplying DC power to the bias tee.

The transmitting and receiving antenna unit may be located outside the cradle, and may further include an RF cable connecting the transmitting and receiving antenna unit and the bias tee.

Alternatively, the transmission / reception antenna unit may be located inside the holder, and the antenna provided in the transmission / reception antenna unit may be positioned to be spaced apart by λ / 2 or more from the antenna provided in the relay antenna unit.

Preferably, at least one of the relay antenna unit and the transmit / receive antenna unit may include an amplifier (LNA) for amplifying a signal transmitted and received by the provided antenna.

More preferably, the antenna provided in the relay antenna unit may be formed of a directional microstrip patch antenna.

Further, the power supply unit may receive power through a cigarette lighter socket of a vehicle or by connecting a USB cable to a USB port of the mounted portable terminal.

Alternatively, the power supply unit may receive power through a built-in battery or a solar panel.

According to the present invention, it is possible to use various functions of the portable terminal without restriction by improving the antenna performance of the portable terminal when the portable terminal is used in a region, a building, or a vehicle having a weak reception signal.

In particular, the present invention improves the antenna performance of the portable terminal by radiating the RF signal into the air electromagnetically with the relay antenna unit of the built-in antenna of the portable terminal. A portable terminal such as a tablet PC can also improve the performance of the antenna, and since the portable terminal is not connected with a cable, the portable terminal is much easier to install in a vehicle cradle and is simpler in appearance.

Furthermore, in the present invention, a ground plane having a sufficient area is formed on the rear surface of the patch antenna in the relay antenna unit to obtain the maximum gain of the antenna signal in the direction of the antenna. It can be minimized.

1 shows various external antennas,
Figure 2 illustrates a vehicle holder that can improve the antenna performance of the portable terminal according to the prior art,
Figure 3 schematically shows an embodiment of the configuration embedded in the terminal holder having the RF signal transmission and reception function according to the present invention,
Figure 4 schematically shows another embodiment of the configuration embedded in the terminal holder having the RF signal transmission and reception function according to the present invention,
5 is a cross-sectional view of a first, second and third embodiment of a vehicle holder as an embodiment of a terminal holder having an RF signal transmission and reception function according to the present invention,
6 shows the radiation characteristics of a directional antenna,
7 shows an embodiment of a patch antenna provided in the relay antenna unit in the present invention,
8 shows a graph of the radiation characteristics of the directional patch antenna used in the present invention,
FIG. 9 is a graph illustrating a result of testing GPS antenna performance by applying a built-in antenna and a terminal holder having an RF signal transmitting / receiving function according to the present invention to a tablet PC in a laboratory inside a building.
FIG. 10 is a graph illustrating a result of testing GPS antenna performance by applying a built-in antenna and a terminal holder having an RF signal transmission / reception function according to the present invention to a tablet PC in a vehicle.
11 is a cross-sectional view of a fourth embodiment of a vehicle holder as an embodiment of a terminal holder having an RF signal transmission and reception function according to the present invention;
12 is a sectional view of a fifth embodiment of a vehicle holder as an embodiment of a terminal holder having an RF signal transmission / reception function according to the present invention.

In order to explain the present invention, the operational advantages of the present invention, and the objects achieved by the practice of the present invention, the following describes exemplary embodiments of the present invention and looks at it with reference.

The present invention relates to a terminal holder having an RF signal transmission / reception function for improving antenna performance of a portable terminal when the portable terminal is used in an area, a building, or a vehicle having a weak reception signal.

The present invention is roughly composed of a relay antenna unit embedded in the terminal holder to which the terminal is detachable and a transceiver antenna unit located inside or outside the portable terminal holder.

The relay antenna unit is an antenna for transmitting a signal from the transmitting and receiving antenna unit to the portable terminal mounted on the cradle as an RF signal, and receives the RF signal from the portable terminal.

The transceiver antenna receives and transmits an external signal to the portable terminal in association with the relay antenna unit, and transmits a signal from the portable terminal to the outside.

Figure 3 schematically shows an embodiment of the configuration embedded in the terminal holder having the RF signal transmission and reception function according to the present invention.

The basic configuration of the present invention is a transmitting and receiving antenna unit 100 is provided with an antenna 110 and a relay antenna unit 200 is provided with an antenna 210, which is further provided with a bias tee (300) The bias tee 300 receives a DC power and distributes and synthesizes a DC power and an RF signal.

In FIG. 3, the bias tee 300 supplies DC power to the transmitting / receiving antenna unit 100 while receiving an external signal and transmitting the external signal to the portable terminal, and supplies the DC power to the relay antenna unit 200 through the bias tee 300. Blocks and transmits only the signal from the transmit / receive antenna 100. In addition, the circuit design is also possible in the reverse direction. In receiving the signal of the portable antenna and transmitting the signal to the outside, the DC power is supplied to the relay antenna unit 200 and the DC power is cut off to the transmitting / receiving antenna unit 100 through the bias tee 300. Only the signal from the relay antenna unit 200 may be transmitted.

Furthermore, an amplifier for amplifying a signal may be provided. In the embodiment of FIG. 3, an amplifier (LNA) 120 for amplifying a signal is provided in the transmission / reception antenna unit 100 and a band pass for removing noise. A filter (bandpass fillter) 130 is provided.

The amplifier (LNA) and the bandpass filter may be selectively provided, and may be installed at an appropriate position between the transmit / receive antenna unit 100 and the relay antenna unit 200 according to a spatial situation to be installed.

Figure 4 schematically shows another embodiment of the configuration embedded in the terminal holder having the RF signal transmission and reception function according to the present invention.

In the embodiment of FIG. 4, as in the embodiment of FIG. 3, an antenna 110, an amplifier 120, and a bandpass filter 130 are provided in the transmission / reception antenna unit 100 and a bias tee 300 is mounted. have.

Furthermore, in the embodiment of FIG. 4, the relay antenna unit 200 includes an amplifier 220 and a band pass filter 230 as well as the antenna 210, and a power supply unit for supplying DC power to the bias tee 300. 400 is provided.

As described above, the amplifier and the bandpass filter may be provided at various positions according to a spatial situation as an optional configuration, and the number provided may also be appropriately adjusted according to the situation. In particular, when the transmitting and receiving antenna unit is connected at a long distance by an RF cable, a plurality of antennas may be installed at an appropriate position to compensate for line loss, and also an antenna provided in the relay antenna unit and a built-in antenna of a portable terminal mounted on a cradle. If the distance is far from each other, since the radiation signal of the antenna provided in the relay antenna unit can be rapidly reduced, even in this case it may be installed in a plurality of appropriate positions.

Then, through the embodiment of the terminal holder equipped with each component according to the present invention will be described in more detail with respect to the above-described configuration.

5 illustrates a cross-sectional view of a first, second and third embodiment of a vehicle holder as an embodiment of a terminal holder having an RF signal transmission / reception function according to the present invention.

In the first, second and third embodiments of the present invention shown in (a), (b) and (c) of FIG. A mounting unit 510 on which the portable terminal is mounted is formed to be detachable, and a creep holder 520 is formed to stably fix the mounted portable terminal. In addition, a vacuum suction unit 550 is provided to fix the holder on the glass inside the vehicle.

The configuration for mounting the portable terminal and the configuration for fixing the cradle are not the main features of the present invention and are finished as above for a more detailed description of the main technical features of the present invention, but the structure of the vehicle cradle shown above The shape and structure of various types of navigation cradles, portable cradles, and vehicle cradles may be applied to the present invention.

In the first embodiment according to the present invention shown in FIG. 5 (a), an embodiment of the basic configuration of the present invention, the transmission and reception antenna unit 100a having an antenna for transmitting and receiving an external signal is a vacuum suction unit Adjacent to 550 is provided inside the vehicle holder, the relay antenna portion 200a is provided to be adjacent to the built-in antenna of the portable terminal mounted on the seating portion 510 surface. In FIG. 5A, the relay antenna unit 200a is illustrated as being formed on an inner surface of a portion on which the portable terminal of the holder is mounted, but according to circumstances, an outer surface of the portion on which the portable terminal of the holder is mounted or It may be formed in an adjacent interior.

When the transmitting and receiving antenna 100b is provided inside the holder as in the first embodiment of the present invention illustrated in FIG. 5A, each of the transmitting and receiving antenna unit 100a and the relay antenna unit 200a are respectively provided. Since the antennas may cause interference with each other, the antennas provided in the transmission / reception antenna unit 100a and the antennas provided in the relay antenna unit 200a are preferably spaced apart from each other by a distance of λ / 2 or more.

The second embodiment according to the present invention shown in (b) of FIG. 5 further includes an additional configuration as a modification of the first embodiment.

The second embodiment according to the present invention shown in FIG. 5 (b) includes a bias tee 300b and a power supply 400b, and includes a transmit / receive antenna unit 100b, a bias tee 300b, and a relay antenna unit. The 200b and the bias tee 300b are connected to the RF cable 350b, and the bias tee 300b may receive power from the cigarette lighter socket of the vehicle through the vehicle cigarette jack 400b.

Furthermore, the portable terminal may be supplied with power. When the portable terminal holder according to the present invention is provided with a power connection terminal or a USB port, a cigar jack for a vehicle is connected to the mounted portable terminal and the connection terminal or the USB port. Power may be supplied from the mounted portable terminal through.

In the third embodiment according to the present invention shown in FIG. 5C, power is supplied from the cigarette lighter socket of the vehicle through the configuration of the relay antenna unit 200c and the bias tee 300c and the vehicle cigarette jack 400c. Although the receiving portion is similar to the first embodiment, the transmitting and receiving antenna portion 100c is connected to the cradle through the connector 360 as an RF connector type having an RF cable 370c and a connector 360 as an external type. Here, the RF connector may be applied to various types such as MCX, SMA, SMB, MMCX used for an external antenna, and may also directly connect an external antenna to a bias tee using an RF cable without a separate connector.

In the present invention, the antenna provided in the relay antenna unit improves the performance of the antenna of the portable terminal mounted on the cradle by radiating an RF signal. For this purpose, the antenna provided in the relay antenna unit is a non-directional monopole antenna. It may be formed of a PIFA-type F-PCB antenna, a radiator antenna, a ceramic chip antenna, etc., but is preferably formed of a directional patch antenna for directing the antenna embedded in the portable terminal.

For example, when the antenna provided in the relay antenna unit is formed of an omnidirectional monopole antenna, a PIFA type F-PCB antenna, a radiator antenna, a ceramic chip antenna, or the like, the antenna size is 2 to 4 times larger than that of the patch antenna. Since the size can be made small, the portable terminal holder can be less spatially restricted in forming the relay antenna unit.

That is, in terms of space, it is preferable to form the antenna provided in the relay antenna unit as an omnidirectional antenna, but in terms of performance characteristics of the antenna, it is effective to form the antenna provided in the relay antenna unit as a directional antenna.

Looking at the configuration and advantages of the directional patch antenna of the relay antenna in the present invention, Figure 6 shows the radiation characteristics of the directional antenna, in the case of the directional antenna as shown in FIG. The beam width becomes wider and also reduces unnecessary back lobes.

7 illustrates an embodiment of a patch antenna provided in the relay antenna unit in the present invention.

7 (a) shows a front surface of a patch antenna provided in the relay antenna unit according to the present invention, (b) shows a rear surface of a patch antenna provided in the relay antenna unit according to the present invention, (c ) Shows the side of the patch antenna provided in the relay antenna unit according to the present invention.

In the patch antenna provided in the relay antenna unit according to the present invention, a conductive radiator 250 for radiating an RF signal is formed on the front surface of the ceramic dielectric 260, and a ground surface 270 is formed on the rear surface of the ceramic 260. The antenna pin 280 penetrating the conductive radiator 250, the ceramic dielectric 260, and the ground surface 270 is fixed to the soldering portion 290 to be connected to the feed line.

In installing the relay antenna unit provided with the patch antenna in the holder, the conductive radiator 250 of the patch antenna is directed to the built-in antenna of the portable terminal mounted on the holder. Install the patch antenna facing in the direction.

The patch antenna to be applied in the present invention is preferably a microstrip patch antenna having directivity. An omnidirectional monopole antenna, a PIFA-type F-PCB antenna, a metal plate antenna, a ceramic chip antenna, etc. Although it can be used as an antenna provided in the relay antenna unit, such an omnidirectional antenna not only radiates a signal to a specific internal antenna of the portable terminal, but also radiates unnecessary signals in all directions to the internal antenna of another function located inside the portable terminal. Therefore, in the present invention, the directional patch antenna as in the embodiment shown in FIG. 7 is effective.

8 shows a graph of the radiation characteristics of a directional patch antenna used in the present invention.

FIG. 8A is a graph of the radiation characteristics of a patch antenna having a 35 mm square ground plane. When the ground plane is not sufficient, as shown in the radiation characteristic graph of FIG. The gain is lowered in the direction of the patch antenna and unnecessary back lobes are generated to the rear.

FIG. 8B is a graph showing the radiation characteristics of a patch antenna having a 70 mm square ground plane. If the ground plane is sufficient, the patch antenna as shown in the radiation characteristic graph of FIG. 8B is sufficient. The gain is maximized in the direction of the direction, the beam width is wider, and unnecessary back radiation is reduced.

Therefore, in the present invention, while applying a directional patch antenna, the cross-sectional area of the ground plane of the rear surface of the patch antenna is larger than the cross-sectional area of the conductive radiator to be formed to reduce the rear radiation and to increase the gain in the direction of direction.

As such, the present invention improves the antenna performance of the portable terminal so that various functions of the portable terminal can be used without restriction when the portable terminal is used in a region, a building, or a vehicle having a weak reception signal. A graph showing a result of a tablet PC mounted on a vehicle cradle having an RF signal transmission / reception function and testing GPS antenna performance according to the present invention.

FIG. 9 is a test result of GPS antenna performance by applying a built-in antenna and a vehicle holder having an RF signal transmitting / receiving function according to the present invention to a tablet PC in a laboratory inside a building.

9 (a) is a graph of signal to ratio (SNR) results of testing GPS reception performance using only a built-in antenna built into a tablet PC, and FIG. 9 (b) is shown in (c) of FIG. The SNR result graph of mounting the tablet PC on a vehicle cradle having an RF signal transmission / reception function according to the present invention and testing GPS antenna performance is shown.

In general, a GPS system for a vehicle uses a standalone method of receiving a signal directly from a satellite and measuring the position of the terminal. For this purpose, at least four or more satellite signals from among 12 GPS satellites floating in the northern hemisphere are used. In addition, the SNR of all four or more satellite signals must be received at least 40dB to quickly determine the exact location of the terminal.

In the case of a mobile phone or a smart phone, the stand-alone method is basically used, but if the GPS signal reception is not smooth, an assisted GPS method is used to determine the location of the terminal by supporting GPS data of neighboring base stations. Will be used.

In the case of the assisted GPS method, when two or three satellite signals having an SNR of 35 dB or more of the GPS antenna are received, the GPS satellite information that is insufficient together with the two or three GPS satellite signals received uses location information of some adjacent base stations. To determine the location of the terminal.

Referring to the SNR result graph shown in (a) of FIG. 9, the SNRs of the signals of satellites 02, 04, 05, and 10 were measured at 35, 34, 32, and 31 dB, respectively, but all were measured at 40 dB or less. It is hard to apply the Aaronic method.

However, in the SNR result graph shown in (b) of FIG. 9, the SNRs of the signals of satellites 02, 04, 05, 10 and 12 are measured at 43, 50, 47, 47, and 41 dB, respectively, all higher than 40 dB. With the SNR value, the above standalone method can be used to quickly and accurately determine the location of the terminal.

FIG. 10 is a test result of GPS antenna performance by applying a built-in antenna for a tablet PC having a built-in antenna and an RF signal transmitting / receiving function according to the present invention to a tablet PC.

10 (a) is a graph of a signal to ratio (SNR) result of testing GPS reception performance using only a built-in antenna built in a tablet PC, and FIG. 9 (b) is shown in (c) of FIG. The SNR result graph of mounting the tablet PC on a vehicle cradle having an RF signal transmission / reception function according to the present invention and testing GPS antenna performance is shown.

Referring to the SNR result graph shown in (a) of FIG. 10, the SNR values for each satellite signal are sequentially measured from 39, 35, 32, 31, and 20 dB, starting from the maximum value. There is no way to apply it.

However, in the SNR result graph shown in FIG. 10 (b), the SNR values for each satellite signal are sequentially measured at 46, 45, 44, 43, and 40 dB from the maximum, and all have a high value of 40 dB or more. By applying the standalone method of the terminal location can be quickly and accurately determined.

As described above, in the present invention, since the relay antenna unit radiates RF signals to the internal antenna of the portable terminal, the antenna performance of the portable terminal is improved, and thus a portable terminal such as a smartphone or a tablet PC is not provided with a terminal connecting an external antenna. The performance of the antenna can be improved, and since the portable terminal is not connected with a cable, the portable terminal is much easier to mount on the vehicle holder, and the appearance is simplified.

Furthermore, in the present invention, a low power consumption MMIC or BJT may be used as the device used in the amplifier stage (LNA), and in this case, when a power of 1.5 to 3 V is applied, it is possible to obtain a 10 to 20 dB amplification gain. Can be.

In particular, when the MMIC is used, the current consumption is about 2 to 3 mA, so the amplifier stage can be used even if a battery, a rechargeable battery, or a solar panel, which are built to be replaced without being supplied with power through the cigarette lighter socket of the vehicle, can be replaced. There is sufficient power supply to drive.

In the present invention, the embodiment of the present invention improved by configuring the power unit by configuring such a low power device will be described below.

11 is a cross-sectional view of a fourth embodiment of a vehicle holder as an embodiment of a terminal holder having an RF signal transmission / reception function according to the present invention.

In the fourth embodiment according to the present invention shown in FIG. 11, the positions and functions of the external transmit / receive antenna unit 100d, the relay antenna unit 200d, and the bias tee 300d are shown in FIG. 5C. Since it is similar to the third embodiment according to the present invention, repeated description thereof will be omitted.

However, in the fourth exemplary embodiment according to the present invention illustrated in FIG. 11, the power supply unit may include an amplifier and a bandpass filter selectively provided in the transmission / reception antenna unit 100d and the relay antenna unit 200d as described above. 400d) does not get power through the car's cigarette lighter socket, but from the built-in small battery.

12 is a cross-sectional view of a fifth embodiment of a vehicle holder as an embodiment of a terminal holder having an RF signal transmission / reception function according to the present invention, and also in the fifth embodiment according to the present invention shown in FIG. The positions and functions of the transmit / receive antenna unit 100e, the relay antenna unit 200e, and the bias tee 300e are similar to those of the third embodiment of the present invention shown in FIG. As in the fourth embodiment according to the present invention, an amplifier and a band pass filter, which are selectively provided in the transmission / reception antenna unit 100e and the relay antenna unit 200e, are configured as the low-power device described above, and thus the power supply unit 400e is solar light. Including a panel to supply power.

11 and 12, the terminal holder of the embodiment according to the present invention, shown in Figure 11 and 12, but is not limited thereto, but is applied to a portable cradle that the user can easily carry. In particular, the portable cradle according to the present invention, which applies a small battery or a solar panel, can effectively improve the antenna performance of a portable terminal mounted outdoors even when it is difficult to receive power from the outside.

Furthermore, although not shown in the drawing, the rechargeable battery and the solar panel are installed at the same time to operate the device in the presence of sunlight to charge the rechargeable battery while operating the device using the rechargeable battery in the absence of sunlight It is also possible to use a power source charged in.

In addition, by mounting the power supply ON / OFF switch in the power supply unit, when the holder is not in use, the terminal holder according to the present invention can be used for a longer time by stopping the power supply to remove unnecessary discharge of the battery, Equipped with a power supply conversion switch to selectively use the photovoltaic panel and the rechargeable battery, power is supplied by the solar panel in the presence of sunlight and from the battery in the absence of sunlight. Receiving, more efficient power supply is possible.

In particular, when an external transceiver antenna unit is used and a battery or a rechargeable battery is used in the cradle, it can be used as a portable cradle as well as inside a vehicle.

As such, the present invention improves the antenna performance of the portable terminal when the portable terminal is used in a region, a building, or a vehicle in which the corresponding reception signal is weak, so that various functions of the portable terminal can be used without restriction, and in particular, to connect an external antenna. In the case of using a smartphone or tablet PC that is not provided with a terminal for the configuration and features according to the present invention will be more effective.

In addition, in the present invention, the portable terminal does not refer only to a portable terminal, but includes all general terminals such as navigation provided in a vehicle at all times, and for improving antenna performance of various terminals according to a use place or purpose. The present invention is applied to the terminal holder.

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments described in the present invention are not intended to limit the technical idea of the present invention but to explain, and the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents thereof should be construed as being included in the scope of the present invention.

100: transmitting and receiving antenna unit, 110: antenna provided in the transmitting and receiving antenna unit,
200: the relay antenna unit, 120: the antenna provided in the relay antenna unit,
250: conductive radiator, 260: ceramic dielectric,
270: ground plane,
300: bias tee, 400: power supply,
510: seating portion, 520: creep holder,
550: vacuum suction unit.

Claims (10)

In the cradle where the terminal is removable,
Transmitting and receiving antenna unit having an antenna for transmitting and receiving an external signal and
Radiating signal from the transmitting and receiving antenna unit to the portable terminal mounted on the cradle as an RF signal, and a relay antenna unit having an antenna for receiving and transmitting the RF signal emitted from the portable terminal to the transmitting and receiving antenna unit,
The relay antenna unit, the terminal cradle having an RF signal transmission and reception function, characterized in that formed on the outer surface or adjacent to the inside of the mounting portion of the portable terminal. The method of claim 1,
The antenna provided in the relay antenna unit, the terminal holder having an RF signal transmission and reception function, characterized in that formed as a directional patch antenna for directing the antenna embedded in the portable terminal. The method of claim 1,
The antenna provided in the relay antenna unit, a terminal holder having an RF signal transmission and reception function, characterized in that formed of any one of a non-directional monopole antenna, PIFA type F-PCB antenna, radiator antenna or ceramic chip antenna. The method of claim 1,
A bias tee positioned between the transmitting and receiving antenna unit and the relay antenna unit to synthesize or separate an RF signal and a DC signal;
And a power supply unit supplying DC power to the bias tee. The method of claim 4, wherein
The transmission and reception antenna unit is located outside the cradle,
And a RF cable for connecting the transceiver antenna unit and the bias tee. The method of claim 4, wherein
The transmitting and receiving antenna unit is located inside the holder, the terminal holder having an RF signal transmission and reception function, characterized in that the antenna provided in the transmitting and receiving antenna unit is spaced apart by λ / 2 or more from the antenna provided in the relay antenna unit . The method of claim 4, wherein
At least one of the relay antenna unit or the transceiver antenna unit,
Terminal holder having an RF signal transmission and reception function, characterized in that it comprises an amplifier (LNA) for amplifying the signal transmitted and received by the provided antenna. The method according to any one of claims 1, 2 or 4 to 7,
The antenna provided in the relay antenna unit, a terminal holder having an RF signal transmission and reception function, characterized in that the directional microstrip patch antenna. 8. The method according to any one of claims 4 to 7,
The power supply unit, the terminal cradle having an RF signal transmission and reception function, characterized in that the power is supplied through the cigarette lighter socket of the vehicle, or by connecting a USB cable to the USB port of the mounted portable terminal. 8. The method according to any one of claims 4 to 7,
The power supply unit, the terminal cradle having an RF signal transmission and reception function, characterized in that the power supply is supplied via a built-in battery or solar panel.

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