KR100783715B1 - An antenna with programmable light-emitting device - Google Patents

Abstract

The present invention relates to a programmable light emitting element control antenna comprising a feed-line, a ground terminal, a radiation portion and a light emitting element unit. The radiation section is electrically connected to an electrical path between the feed line and the ground terminal to transmit a radiation or received high frequency signal to the feed line. The feed line also provides a low frequency signal to the light emitting element unit. The light emitting element unit is connected between the feed line and the ground terminal and also emits a corresponding light beam by the low frequency signal.

Wireless network, feed line, ground terminal, light emitting element, control antenna

Description

Programmable light emitting device control antenna TECHNICAL FIELD

1 is a diagram showing a conventional wireless network transmission device;

2 is a block diagram illustrating a programmable light emitting element control antenna according to one embodiment of the invention;

3 and 4 are wiring diagrams showing a programmable light emitting element control antenna according to another embodiment of the present invention; (A) is a first surface of a circuit board, (b) is a second surface of a circuit board;

5 shows measurement results of antenna return loss;

6 shows measurement results of antenna standing wave ratios;

7 shows the input resistance of the antenna measured with a Smith chart display;

FIG. 8A shows the radiation in the E-plane of the antenna radiation field and the radiated current under the condition that the cable loss of the light emitting diode printed circuit board antenna is 1.5 dB. Pattern;

FIG. 8B is a radiation pattern in the horizontal plane (H-plane) of the antenna radiation length and the radiation current perpendicular to each other under the condition that the coaxial loss of the LED printed circuit board antenna is 1.5 dB.

* Description of the symbols for the main parts of the drawings *

102: main body 104: signal processor

106: light emitting diode 108: antenna

202 and 302: feed line 204: copy unit

206: light emitting element unit 208: electrical path

304, 404: first copy unit 318, 418: second copy unit

312, 412: first guide hole 314, 414: second guide hole

308, 408: first electrical pass 322, 422: second electrical pass

326, 426: first antenna unit 328, 428: second antenna unit

410: third copy unit 420: fourth copy unit

306 and 406: first light emitting element unit 416: second light emitting element unit

324: substrate GND: ground terminal

The present invention relates to an antenna, and more particularly, to a programmable light emitting element control antenna.

In recent years, with the spread of the network, the demand for information acquisition and exchange by people is increasing day by day. However, the conventional fixed connection network must be designed and laid in advance according to the layout of the equipment or office furniture of the place of business. Thus, if there is even a slight change in the arrangement of the equipment in the business place, a considerable amount of power and time must be spent changing the network wiring, and even the lines must be re-installed by external exposure. In this situation, conventional fixed-connected networks suffer from drawbacks such as the lines obstructing people's activities or being aesthetically unfavorable to the overall environment. In particular, in the portable information device, the use of a fixed connection network is very limited in its activity range, and loses its superior characteristic of location movement.

In order to solve the above problems, the inventor has developed a wireless network facility and its communication protocol. Specifically, the inventor has installed a wireless network access point in a fixed space and installed a wireless LAN card in a computer main body or a portable information device. Wherein the wireless network access point is an access point interface between the network line and the wireless LAN card on each computer main body or portable information device connected to the network line, and the network line, each computer main body, and portable information by a wireless signal transmission method. By performing the connection function between the device or each computer main body, it is possible to effectively improve the inconvenience of conventional network wiring.

However, the conventional radio | wireless transmission apparatus contains the main body 102, the signal processor 104, the light emitting diode 106, and the antenna 108 as shown in FIG. An antenna is connected to the outside of the main body, and a signal processor and a light emitting diode are installed inside the main body. The signal processor transmits the high frequency signal data through the antenna, and then the signal processor again sends an autopsy signal corresponding to the light emitting diode to cause the light emitting diode to emit a black light source, thereby transmitting the wireless network. Allows you to indicate whether the device is in the process of wireless data transfer.

The light emitting diode of the prior art is installed on the surface of the main body. When using a general wireless network transmission device, it is necessary to install the wireless network transmission device in a relatively high place in order to increase the transmission range and reduce the generation of transmission blind spots. As a result, the user cannot directly and quickly observe the light emitting diodes on the surface of the wireless network communication device, causing inconvenience to visual inspection.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems of the prior art, and to observe a transmission state by a convenient and direct visual inspection by generating a transmission state ray corresponding to a radiation or reception state of a high frequency signal. It is to provide a programmable light emitting device control antenna.

Another object of the present invention is to provide a programmable light emission that can be placed on a printed circuit board capable of observing the transmission state by a convenient and direct visual inspection by generating a transmission state ray corresponding to the state of the radio frequency signal received or copied. An element control antenna is provided.

In order to achieve the above object, the programmable light emitting element control antenna according to the present invention includes a feed line, a ground terminal, a radiation unit and a light emitting element unit. The radiation unit is electrically connected to an electrical path between the feed line and the ground terminal, and transmits the high frequency signal that is copied or received to the feed line. The feed line further provides a low frequency signal to the light emitting element unit. The light emitting element unit is electrically connected between the feed line and the ground terminal, and emits a light beam corresponding to the low frequency signal.

As can be seen from the above, in the present invention, the light emitting device unit is directly installed in an antenna, and the light emitting device unit emits a corresponding light beam by using a low frequency signal corresponding to a radiation or reception state of a high frequency signal. Therefore, the user can directly monitor the state of copying or receiving the high frequency signal of the current antenna according to the corresponding light beam emitted by the light emitting element unit. In addition, as described in the embodiment, if each light emitting diode is installed on the front and back surfaces of the antenna, it can be regarded as two parallel resistors when the signal is conducted, and the equivalent resistance thereof becomes small, thereby the impedance frequency range of the antenna Can be increased.

Hereinafter, with reference to the accompanying drawings will be described the configuration and operation of the present invention.

Prior art wireless network transmitters install wireless network transmitters at relatively high locations to increase transmission range and reduce transmission blind spots when in use, thereby allowing the user to directly and quickly surface-emitting diodes of wireless network communication devices. It cannot be observed, which causes inconvenience of visual inspection. In order to improve the inconvenience of the prior art wireless network transmission device and to allow the user to easily observe the light beam emitted by the light emitting device unit to know the transmission state of the current high frequency signal, the present invention will be described as follows. .

2 is a block diagram of a programmable light emitting device unit control antenna according to an embodiment of the invention. It includes a feed line 202, a radiation unit 204, a light emitting element unit 206, an electrical path 208, and a ground terminal GND. One end of the feed line 202 is connected to the electrical path 208 and the other end is connected to the main body (not shown). Ground terminal GND is electrically connected to a ground voltage. In this embodiment, the radiator 204 is electrically connected to an electrical path 208 between the feed line 202 and the light emitting element unit 206, and is disposed symmetrically on both sides of the electrical path 208. The light emitting element unit 206 is electrically connected to an electrical path between the radiation unit 204 and the ground terminal GND.

The copy unit 204 receives the high frequency signal from the space, and then transmits the high frequency signal to the feed line 202 through an electrical path. In this case, the feed line 202 provides a low frequency signal corresponding to the radiation or reception state of the high frequency signal, which is also transmitted to the light emitting device unit 206 through the electrical path 208. At this time, the light emitting element unit 206 emits a corresponding light ray by the low frequency signal.

In this embodiment, the light emitting element unit 206 includes one or more light emitting diodes. The low frequency signal also belongs to a radio area network signal.

In addition to the above applications, the programmable light emitting element unit control antenna may be implemented on a printed circuit board using a wiring scheme. Referring to FIG. 3, FIG. 3 is a schematic diagram of a programmable light emitting device unit control antenna in accordance with another embodiment of the present invention. Here, (a) represents the first surface (eg front side) of the substrate, and (b) represents the second surface (eg back side) of the substrate. This wiring diagram includes a substrate 324, a feed line 302, a ground terminal GND, a first guide hole 312, a second guide hole 314, a first electrical path 308, and a second electrical path 322. ), A first light emitting device unit 306, and a first antenna unit 326. Here, the first antenna unit 326 includes a first radiation unit 304 and a second radiation unit 318, and the feed line 302 corresponds to the feed line 202 of FIG. The first electrical path 308 and the second electrical path 322 correspond to the electrical path 208 of FIG. 2, and the first antenna unit 326 corresponds to the radiation unit 204 of FIG. 2, and the first light emission. The element unit 306 corresponds to the light emitting element unit 206 of FIG. 2.

The feed line 302 is disposed on the first surface of the substrate 324 and is also connected to the first radiation section 304 via a first electrical path 308. The first radiation unit 304 is symmetrically disposed on both sides of the first electrical path 308 and is also connected to the first guide hole 312. The first guide hole 312 is connected to one end of the first light emitting device unit 306, and the second guide hole 314 is connected to the other end of the first light emitting device unit 306 and is further connected to the substrate 324. Is connected to a second electrical path 322 of the second surface. The second electrical path 322 is connected to the second radiation portion 318. The second radiator 318 is disposed symmetrically at positions corresponding to both sides of the second electrical path 322 and the first radiator 304, and then grounded again via the second electrical path 322. It is connected to the terminal GND.

After the first antenna unit 326 copies or receives the high frequency signal, the first antenna unit 326 transmits the high frequency signal to the feed line 302 through the first electrical path 308. At this time, the feed line 302 provides a low frequency signal by the system substrate stage, which is a signal corresponding to the radiation or reception state of the high frequency signal, and the low frequency signal is also the first electrical path 308, light emission. Flows through the element unit 306, the second electrical path 322 and the ground terminal GND, whereby the light emitting element unit 306 emits a corresponding light beam in accordance with this low frequency signal.

The light emitting element unit in this embodiment includes one or more light emitting diodes. The low frequency signal also belongs to a radio area network signal. In addition, in the present embodiment, the length of the first radiation portion and the second radiation portion of the first antenna unit is λ _g / 4, where λ _g is the wavelength length.

  It is apparent that a person skilled in the art may add a second light emitting element unit and a second antenna unit to the circuit of FIG. 3. Referring to FIG. 4, FIG. 4 is a schematic diagram of another embodiment of a programmable light emitting element control antenna in accordance with the present invention. Here, (a) represents the first surface of the substrate 324, and (b) represents the second surface of the substrate 324. This wiring diagram includes a substrate 324, a feed line 402, a ground terminal GND, a first guide hole 412, a second guide hole 414, a first electrical path 408, and a second electrical path (here 422, the first light emitting device unit 406, the first antenna unit 426, the second light emitting device unit 416, and the second antenna unit 428. Here, the first antenna unit 426 includes a first radiator 404 and a second radiator 418, and the second antenna unit 428 includes a third radiator 410 and a fourth radiator ( 420). Also, the feed line 402 corresponds to the feed line 202 of FIG. 2, and the first electrical path 408 corresponds to the electrical path 208 of FIG. 2, and includes the first antenna unit 426 and the second antenna path. The antenna unit 428 corresponds to the radiation unit 204 of FIG. 2, and the first light emitting element unit 406 and the second light emitting element unit 416 correspond to the light emitting element unit 206 of FIG. 2.

Since FIG. 4 is the addition of the second light emitting element unit 416 and the second antenna unit 428 to the circuit of FIG. 3, 402, 404, 406, 408, 412, 414, 418, 422, 424 and 426 Corresponding to 302, 304, 306, 308, 312, 314, 318, 322, 324 and 326, respectively, the relationship and operation principle are not further described here. However, one end of the added second light emitting device unit 416 is connected to the first guide hole 412, and the other end is connected to the second guide hole 414 to be connected in parallel with the first light emitting device unit 406. In this way, the equivalent resistance of the two light-emitting elements connected in parallel becomes small, thereby increasing the impedance frequency range of the entire antenna. The third radiation unit 410 included in the other additional second antenna unit 428 is connected to the first electrical path 408 between the feed line 402 and the first antenna unit 426, and One is arranged symmetrically on both sides of the electrical path (408). In addition, the fourth radiation unit 420 included in the second antenna unit 428 is disposed symmetrically on both sides of the second electrical path 422, and is located at a position corresponding to the third radiation unit. Therefore, the second antenna unit 428 forms a radiation array antenna with the first antenna unit 426 to increase the gain of the antenna, thereby reducing the influence of the light emitting element on the antenna gain.

In this embodiment, the light emitting element unit 406 (or 416) comprises one or more light emitting diodes. The low frequency signal also belongs to a radio area network signal. In addition, in the present embodiment, the first radiation unit 404 and the second radiation unit 418 of the first antenna unit 426, and the third radiation unit 410 and the second antenna unit 428 4 The length of the radiation section 420 is λ _g / 4, where λ _g is the wavelength.

In order to explain the characteristics of the programmable light emitting element control antenna, the above characteristics are shown below using several measurement figures.

5 shows a result of measuring return loss of an antenna. In the figure, the horizontal axis represents frequency, the vertical axis represents return loss, and the arrows (triangles shown in the figure) 1 to 4 indicate return loss at 2.4 GHz, 2.5 GHz, 2.36570 GHz and 2.71140 GHz, respectively. In this embodiment, the reflection losses of arrows 1 to 4 are -14.030 dB, -14.236 dB, -10.200 dB and -9.9370 dB, respectively. This figure defines the frequency range of the antenna with standard standing wave ratio (SWR) = 2.0, and this impedance frequency range is obtained by subtracting the value indicated by arrow 3 from the value indicated by arrow 4, i.e., 2.71 GHz minus 2.365 GHz. The value is about 345 MHz (the operating frequency band of the antenna). As you can see, this is a very good broadband antenna design.

6 shows measurement results of the antenna standing wave ratio of the present embodiment. The standing wave ratios of arrows 1 to 4 are 1.4910, 1.4846, 1.9046, and 1.9280, respectively. Corresponding to FIG. 5, the reflecting power of the standing wave ratio is generally better as the standing wave ratio value is lower. As can be seen, arrows 3 and 4 can be defined as the frequency band of the antenna when the standing wave is about 2.

7 is the input impedance of the antenna measured on the Smith Chart display, where the input impedances of arrows 1 to 4 are 70.168 kV, 39.422 kV, 43.301 kV and 67.414 kV, respectively, and have an imaginary part impedance. 8A and 8B show a radiation pattern measurement result under a condition that a coaxial loss of a light emitting diode printed circuit board antenna of this embodiment is 1.5 dB. Here, FIG. 8A shows a radiation pattern in which the radiation field and the radiation current of the antenna are in the vertical direction E-plane. In FIG. 8A, the frequency represented by the solid solid line is 2.4 GHz, the frequency represented by the dotted line is 2.45 GHz, and the frequency represented by the thick solid line is 2.5 GHz. Here, when the frequency is 2.4 GHz, the peak of the vertical plane gain is -0.58 and the average is -5.26. When the frequency is 2.45 GHz, the peak of the vertical plane gain (E-Plane Gain) is 1.25, and the average value is -4.51. When the frequency is 2.5GHz, the peak of the vertical plane gain is 0.51, and the average value is -4.97. 8B illustrates a radiation pattern in a horizontal plane H-plane in which the antenna radiation field and the radiation current are perpendicular to each other. In FIG. 8B, the frequency represented by the thin solid line is 2.4 GHz, the frequency represented by the dotted line is 2.45 GHz, and the frequency represented by the thick solid line is 2.5 GHz. Here, when the frequency is 2.4 GHz, the peak of the H-plane gain is -0.93 and the average is -2.12. When the frequency is 2.45 GHz, the peak of the H-plane gain is -1.15 and the average is -2.61. When the frequency is 2.5 GHz, the peak of the vertical plane gain is -2.14, and the average value is -4.14.

The programmable light emitting device control antenna according to the present invention described above provides the following effects.

The antenna of the present invention can conveniently and directly visually observe the state of the transmitted signal with the LEDs on the antenna. At the same time, the characteristics of the antenna are still good even with a few additional LEDs.

Although the preferred embodiment of the present invention has been described above, it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the present invention.

Claims (11)

A feed line for transmitting and receiving high frequency signals and for providing low frequency signals; Ground terminal for electrical connection to ground voltage: A light emitting element unit electrically connected between the feed line and the ground terminal and configured to emit a corresponding light beam by the low frequency signal; And An electrical path electrically connected between the feed line and the ground terminal, the at least one radiation unit configured to copy or receive the high frequency signal, And the radiator is disposed symmetrically on both sides of an electrical path between the feed line and the ground terminal. The method of claim 1, And said light emitting element unit comprises a light emitting diode, wherein both ends of said light emitting diode are electrically connected to said feed line and said ground terminal, respectively. The method of claim 1, And said light emitting element unit comprises a plurality of parallel connected light emitting diodes, each end of said parallel connected light emitting diode being electrically connected to said feed line and said ground terminal, respectively. delete The method of claim 1, And the antenna is for receiving or transmitting a radio area network signal. A substrate having at least a first surface and a second surface; A feed line disposed on the first surface to transmit and receive a high frequency signal and to provide a low frequency signal; A ground terminal disposed on the second surface and electrically connected to a ground voltage; A first guide hole penetrating the substrate; A second guide hole penetrating the substrate; A first electrical path disposed on the first surface and simultaneously electrically connected between the feed line and the first guide hole; A second electrical path disposed on the second surface and electrically connected between the ground terminal and the second guide hole; A first light emitting device unit disposed on the first surface and electrically connected between the first guide hole and the second guide hole and emitting a corresponding light beam by the low frequency signal; And A first antenna unit for radiating or receiving the high frequency signal, The first antenna unit is: A first radiation portion disposed on the first surface and electrically connected to the first electrical path; And And a second radiation portion disposed at a position corresponding to the first radiation portion of the second surface and electrically connected to the second electrical path. The method of claim 6, And a second light emitting element unit disposed on the second surface and electrically connected between the first guide hole and the second guide hole. The method of claim 6, Further comprising a second antenna unit for radiating or receiving the high frequency signal, the second antenna unit, A third radiation portion disposed on the first surface and electrically connected to the first electrical path; And And a fourth radiation portion disposed at a position corresponding to the third radiation portion of the second surface and electrically connected to the second electrical path. The method of claim 6, And the first radiator is symmetrically disposed on both sides of the first electrical path, and the second radiator is symmetrically disposed on both sides of the second electrical path. The method of claim 6, And the antenna is a printed circuit board antenna. The method of claim 6, And the antenna is for transmitting and receiving radio area network signals.

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