KR20130014076A - Apparatus and method for transmitting and receiving data in wireless transmitting and receiving system and inverse f antenna applied to the same - Google Patents

Abstract

PURPOSE: A device for transceiving data in a wireless transceiving system, a method thereof, and an inverted F antenna applied to the same are provided to improve a property of a transceiving signal by transceiving data by removing a noise in a transceiving antenna. CONSTITUTION: A transmitting unit(100) includes an audio encoding processing unit(102), a wireless transmitting unit(104), and a power supply unit(106). The audio encoding processing unit converts an inputted analog audio signal into a digital audio signal to transmit the signal to the wireless transmitting unit. The wireless transmitting unit modulates the digital audio signal into an RF signal to transmit the signal to one or more receiving units(120). The receiving unit includes a wireless receiving unit(122), an audio decoding processing unit(124), an audio high power amplifying unit(126), and a power supply unit(128). The audio decoding processing unit converts the digital audio signal provided from the wireless receiving unit into the analog audio signal. [Reference numerals] (100) Transmitting unit; (102) Audio encoding processing unit; (104) Wireless transmitting unit; (106) Power supply unit; (120) Receiving unit; (122) Wireless receiving unit; (124) Audio decoding processing unit; (126) Audio high power amplifying unit; (128) Power supply unit; (AA) RCA port(left/right audio signal); (BB) USB port(power supply)

Description

APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING DATA IN WIRELESS TRANSMITTING AND RECEIVING SYSTEM AND INVERSE F ANTENNA APPLIED TO THE SAME

The present invention relates to a wireless transmission and reception system, and more particularly, to an apparatus and method for transmitting and receiving data in a wireless transmission and reception system and an inverse F antenna applied thereto.

In recent years, the audio system has been increasing more audio channels from a single source for a more realistic sound, and the speaker / earphone for each audio playback is continuously maintained with the new universal digital media and the emergence of various terminal devices. Is appearing.

Conventional audio system uses an audio transmission scheme using Bluetooth and FMT. Such an audio transmission method is used when exchanging audio data at a close distance, is weak in noise, has a short transmission distance, and has a limitation in the amount of transmission.

Accordingly, an object of the present invention is to provide an apparatus and method for transmitting and receiving data in a wireless transmission and reception system and an inverted F antenna applied thereto.

Another object of the present invention is to provide an apparatus and method for transmitting and receiving data by removing noise existing in a transmitting / receiving antenna terminal in a wireless transmission / reception system.

Another object of the present invention is to provide an inverse F antenna capable of removing noise present in an antenna stage and improving characteristics of a transmitted / received signal in a wireless transmit / receive system.

According to a first aspect of the present invention for achieving the above object, an inverted F antenna, a radiating portion for radiating radio waves, a grounding portion for connecting the ground plane and the radiating portion, and for supplying current to the radiating portion A feeding part, wherein the radiating part comprises a first line formed to be parallel to the ground plane at a predetermined distance, and the ground part comprises a second line vertically connected to one end of the first line, And a third line parallel to the first line at a predetermined distance and vertically connected to the second line, and a fourth line vertically connected to the third line, connected to a ground plane, and including a hole. Shall be done.

According to a second aspect of the present invention, a method for transmitting data in a wireless transmission / reception system includes: an audio encoding processing unit receiving an analog audio signal from a device requiring output of audio data; And converting the received analog audio signal into a digital audio signal, and transmitting a modulated signal to the digital audio signal through an antenna by converting the converted digital audio signal into an RF signal. A radiating part for radiating, a grounding part for connecting the radiating part to a ground plane, and a feeding part for supplying current to the radiating part, wherein the radiating part is formed to be parallel to the ground plane at a predetermined distance And a ground line, wherein the ground portion is vertically connected to one end of the first line. A second line, a third line parallel to the first line at a predetermined distance, and vertically connected to the second line, and a fourth line vertically connected to the third line and connected to a ground plane and including a hole; Characterized in that the configuration.

According to a third aspect of the present invention, a method for receiving data in a wireless transmission / reception system includes a process of receiving, by a wireless receiver, an RF signal through an antenna, and the wireless receiver by converting the received RF signal into a digital audio signal. And demodulating the digital audio signal into an analog audio signal; and reproducing, by the speaker, the converted analog audio signal. A radiating portion for radiating radio waves, a grounding portion for connecting the grounding surface and the radiating portion, and a feeding portion for supplying current to the radiating portion, wherein the radiating portion is spaced apart from the ground plane at a predetermined distance in parallel And a ground line, wherein the ground portion comprises: a second line vertically connected to one end of the first line; And a third line parallel to the first line at a predetermined distance and vertically connected to the second line, and a fourth line vertically connected to the third line, connected to a ground plane, and including a hole. It is done.

According to a fourth aspect of the present invention, an apparatus for transmitting data in a wireless transmission / reception system includes receiving an analog audio signal from a device requiring output of audio data, and converting the received analog audio signal into a digital audio signal. An audio encoding processor and a wireless transmitter for modulating the converted digital audio signal into an RF signal and transmitting the RF signal through an antenna, wherein the antenna comprises: a radiator for radiating radio waves; a ground plane and the radiator; And a feeding part for supplying current to the radiating part, wherein the radiating part comprises a first line formed in parallel with a predetermined distance from the ground plane. A second line vertically connected to one end of the first line, and parallel to the first line at a predetermined distance Characterized in that first and third connection lines are perpendicular to the second line, is connected with the vertical connection is a ground plane to the third line which is formed by a fourth line including the hole.

According to a fifth aspect of the present invention, an apparatus for receiving data in a wireless transmission / reception system includes: a wireless receiving unit for receiving an RF signal through an antenna and demodulating the received RF signal into a digital audio signal, and the demodulated digital signal. An audio decoding processing unit for converting an audio signal into an analog audio signal, and a speaker for reproducing the converted analog audio signal, wherein the antenna comprises: a radiator for radiating radio waves; a ground plane and the radiator; And a feeding part for supplying current to the radiating part, wherein the radiating part comprises a first line formed in parallel with a predetermined distance from the ground plane. A second line vertically connected to one end of the first line, parallel to the first line at a predetermined distance, and parallel to the second line; Connected to the vertical connection is a ground plane on the third line and the third line is connected to the vertical and is characterized in that comprising: a fourth line including the hole.

The present invention has the advantage of improving the characteristics of the transmission and reception signal by transmitting and receiving data by removing noise present in the transmitting / receiving antenna stage in the wireless transmission / reception system, and further, enabling seamless audio reproduction.

1 is a block diagram showing an apparatus configuration of a wireless transmission / reception system according to the present invention;
2 is a view showing the structure of an antenna applied to a wireless transmission and reception system according to the present invention;
3 is a flowchart illustrating a method for transmitting data in a transmitting unit of a wireless transceiving system according to the present invention; and
4 is a flowchart illustrating a method for receiving data in a receiving unit of a wireless transmission / reception system according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Reference will now be made in detail to the preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings. In the following description, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

Hereinafter, an apparatus and method for transmitting and receiving data in a wireless transmission / reception system and a structure of an inverted F antenna applied thereto will be described.

1 is a block diagram showing the device configuration of a wireless transmission and reception system according to the present invention.

As shown, the wireless transmission / reception system includes a transmitter 100 and one or more receivers 120. The transmitter 100 includes an audio encoding processor 102, a wireless transmitter 104, and a power supply 106, and the at least one receiver 120 is a radio receiver 122 and an audio decoding processor 124, respectively. ), An audio high power amplifier 126, and a power supply 128.

Referring first to the transmitter 100 with reference to FIG. 1, the audio encoding processor 102 is an analog from the device 130 that requires the output of audio data, such as TV, radio, mobile phone, computer, music and video player The audio signal is received, and the analog audio signal is converted into a digital audio signal and transmitted to the wireless transmitter 104. Here, the device 130 and the audio encoding processor 102, which are required to output the audio data, may be connected through, for example, a standard RCA audio connector.

The wireless transmitter 104 modulates a digital audio signal provided from the audio encoding processor 102 into an RF signal and transmits the digital audio signal to one or more receivers 120 through a transmission antenna.

The power supply unit 106 receives DC power from the device 130 that is required to output the audio data, and provides the input DC power to the audio encoding processor 102 and the wireless transmitter 104. Here, the device 130 and the power supply 106, which are required to output the audio data, may be connected through, for example, a standard UBS connector.

Next, the receiver 120 will be described with reference to FIG. 1. The radio receiver 122 demodulates an RF signal received from the transmitter 100 through a reception antenna into a digital audio signal to perform an audio decoding processor ( 124).

The audio decoding processor 124 converts the digital audio signal provided from the wireless receiver 122 into an analog audio signal and provides the converted audio audio signal to the audio high output amplifier 126.

The audio high power amplifier 126 amplifies an analog audio signal provided from the audio decoding processor 124 and reproduces the same through a speaker. Here, the audio high power amplifier 126 may include a stereo high power amplifier and a mono high power sub-woofer amplifier. The audio high power amplifier 126 operates only while an analog audio signal is provided from the audio decoding processor 124, and after a predetermined time delay when no analog audio signal is provided from the audio decoding processor 124. Is turned off. This prevents unnecessary waste of power.

The power supply unit 128 receives DC power from an external voltage source and provides the received DC power to the wireless receiver 122, the audio decoding processor 124, and the audio high power amplifier 126.

Here, the transmitter 100 and the one or more receivers 120 according to the present invention operate in a pairing state, wherein the pairing is established by pressing a button on each unit at the first time each unit is used, and then each Automatically generated when power is supplied to the unit.

Meanwhile, in the wireless transmission / reception system, the transmission antenna and the reception antenna are designed according to the characteristics of the transmitter and the receiver, and the present invention proposes to apply the antenna designed as shown in FIG. 2 to remove noise existing in the antenna stage. do.

2 is a view showing the structure of an antenna applied to a wireless transmission and reception system according to the present invention. In this case, the antenna includes both a transmitting antenna and a receiving antenna.

Referring to FIG. 2, the antenna is formed in the form of a printed circuit pattern on a printed circuit board, and the printed circuit board includes a ground plane and a pattern formation area. According to the present invention, the pattern printed on the pattern forming region forms a modified inverse F antenna. That is, the antenna applied to the wireless transmission / reception system according to the present invention is a modified inverse F antenna, and is formed in a micro strip structure.

The inverted F antenna is an antenna having a shape as if the F is reversed. The inverted F antenna basically includes a radiating part, a ground part, and a feeding part. In short, the principle of operation is that a transmission line is formed with the current supplied from the wireless transmitter / receiver being transmitted to the radiator through the feeder and the current circulating through the radiator returned to the ground plane through the ground, through which the air It receives radio waves in the air or emits radio waves in the air.

In general, the overall length of the inverse F antenna is generally implemented as λ / 4, as shown in Equation 1 below. Therefore, as the operating frequency is smaller, the length of the inverse F antenna increases.

Here, L means the length of the inverse F antenna, and λ means the wavelength of the radio wave. f means the frequency of radio waves and v means the speed of radio waves. In addition, in FIG. 2, the total length of the inverted F antenna is a length (27.6K) of the first line formed parallel to the ground plane at a predetermined distance and a second line vertically connected to one end of the first line. It is determined by the sum of the lengths (6.3K). Therefore, K shown in FIG.

.

The radiating part is formed in parallel with a predetermined distance from the ground plane, and receives a current through a feeder part and transmits the supplied current to the ground plane through a ground part to form a transmission line. The radiator receives radio waves in the air through the transmission line, or emits radio waves into the air. Here, the radiation part is composed of a first line formed in parallel with a predetermined distance spaced from the ground plane. The first line has a length of 27.6K, and some lines from one end of the first line to a position where the feed section is connected have a thickness of 2.2K for antenna impedance matching, and from the position where the feed section is connected Some remaining lines up to the other end of the first line have a thickness of 1.3K for antenna impedance matching.

The ground part connects the ground plane and one end of the radiation part. The ground part may include a second line vertically connected to one end of the first line, a third line parallel to the first line at a predetermined distance, and vertically connected to the second line, and vertically connected to the third line. It is connected to the ground plane and comprises a fourth line including a hole. The second line has a length of 6.3K and has a thickness of 2.4K, and the third line has a length of 10.6K and has a thickness of 1.4K. The fourth line has a length of 4.8K, and some of the lines where holes are located have a thickness of 3.3K, and some other lines where holes are not located have a thickness of 3.1K. The hole formed in the fourth line has a length of 1.2K. The fourth line is formed for connection with the ground plane, and the hole is formed to remove an unnecessary ground plane near the inverse F antenna.

The power supply unit supplies the current supplied from the radio transmitter / receiver to the radiator. The feed section is located at a length of λ / 8 of the resonant frequency at the other end of the radiating section. The feeding part may include a fifth line parallel to the second line and parallel to the first line, and a sixth line parallel to the first line and parallel to the first line and vertically connected to the fifth line. And a seventh line connected to the sixth line at a predetermined angle, and an eighth line spaced apart from and parallel to the fourth line and connected to the seventh line and connected to a wireless transmitter / receiver. do. The fifth line has a length of 0.8K, the sixth line has a length of 3.3K and has a thickness of 1.2K. The seventh line has a length of 1.6K, the eighth line has a length of 5K, of which some lines of 3.3K length have a thickness of 0.5K and the remaining some lines of 1.7K length have a thickness of 0.8K. Has The sixth line generates an air dielectric capacitor that matches the inductance of the feed transmission line. The seventh line is at an angle with the sixth and eighth lines connected to the seventh line so that RF energy can be radiated from the antenna into the air, and some of the 1.7K length lines of the eighth line are 1.7K long. Is formed to connect the resistor and the capacitor. Basically, each line is formed for 50 ohm impedance matching.

3 is a flowchart illustrating a method for transmitting data in a transmitter of a wireless transmission / reception system according to the present invention.

Referring to FIG. 3, in step 301, the transmitter determines whether an analog audio signal is received from a device that requires output of audio data such as a TV, a radio, a mobile phone, a computer, a music player, and a video player.

In step 301, when it is determined that an analog audio signal is received from a device requiring output of audio data, the transmitter converts the received analog audio signal into a digital audio signal in step 303 and codes the encoded audio signal. Modulate the digital audio signal into an RF signal.

In step 305, the transmitter transmits the modulated RF signal to one or more receivers through a transmit antenna. Here, the transmission antenna is designed as shown in FIG. 2 to remove noise.

Thereafter, the transmitter terminates the algorithm according to the present invention.

4 is a flowchart illustrating a method for receiving data in a receiving unit of a wireless transmission / reception system according to the present invention.

Referring to FIG. 4, in step 401, the receiver determines whether an RF signal is received from a transmitter through a receive antenna. Here, the receiving antenna is designed as shown in FIG. 2 to remove noise.

In step 401, when it is determined that an RF signal is received from a transmitter through a receiving antenna, the receiver demodulates the received RF signal into a digital audio signal in step 403, and converts the demodulated digital audio signal into an analog audio signal. Convert to and decode.

In operation 405, the receiver amplifies the decoded analog audio signal and reproduces the same through a speaker.

Thereafter, the receiving unit terminates the algorithm according to the present invention.

While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments, but is capable of various modifications within the scope of the invention. Therefore, the scope of the present invention should not be limited by the illustrated embodiments, but should be determined by the scope of the appended claims and equivalents thereof.

Audio encoding processor 102, wireless transmitter 104, power supply 106, wireless receiver 122, audio decoding processor 124, audio high power amplifier 126, power supply 128

Claims (15)

A radiator for radiating radio waves,
A ground part for connecting a ground plane and the radiation part,
It includes a feeder for supplying a current to the radiating unit,
Here, the radiating part is composed of a first line formed in parallel with a predetermined distance spaced from the ground plane,
The ground part may include a second line vertically connected to one end of the first line, a third line parallel to the first line at a predetermined distance, and vertically connected to the second line, and vertically connected to the third line. And a fourth line connected to the ground plane and including a hole.
The method of claim 1,
The first line has a length of 27.6K, and some of the lines from one end of the first line to a position at which the feeder is connected have a thickness of 2.2K, and from the position at which the feeder is connected to the first line. The remaining some lines up to the other end have a thickness of 1.3K,
here,

Λ denotes the wavelength of radio waves.
The method of claim 1,
The second line has a length of 6.3K and a thickness of 2.4K,
here,

Λ denotes the wavelength of radio waves.
The method of claim 1,
The third line has a length of 10.6K and a thickness of 1.4K,
here,

Λ denotes the wavelength of radio waves.
The method of claim 1,
The fourth line has a length of 4.8K and some of the lines where the holes are located have a thickness of 3.3K and some of the other lines where the holes are not have a thickness of 3.1K,
here,

Λ denotes the wavelength of radio waves.
The method of claim 1,
The hole formed in the fourth line has a length of 1.2K,
here,

Λ denotes the wavelength of radio waves.
The method of claim 1,
The feeding part may include a fifth line parallel to the second line and parallel to the first line, and a sixth line parallel to the first line and parallel to the first line and vertically connected to the fifth line. And a seventh line connected to the sixth line at a predetermined angle, and an eighth line spaced apart from and parallel to the fourth line and connected to the seventh line and connected to a wireless transmitter / receiver. Inverted F antenna, characterized in that.
The method of claim 7, wherein
The fifth line has a length of 0.8K,
here,

Λ denotes the wavelength of radio waves.
The method of claim 7, wherein
The sixth line has a length of 3.3K and a thickness of 1.2K,
here,

Λ denotes the wavelength of radio waves.
The method of claim 7, wherein
The seventh line has a length of 1.6K and is connected at an angle with the sixth and eighth lines,
here,

Λ denotes the wavelength of radio waves.
The method of claim 7, wherein
The eighth line has a length of 5K, of which some lines of 3.3K length have a thickness of 0.5K and some of the remaining lines of 1.7K length have a thickness of 0.8K,
here,

Λ denotes the wavelength of radio waves.
Receiving, by the audio encoding processor, an analog audio signal from a device requiring output of audio data;
Converting, by the audio encoding processor, the received analog audio signal into a digital audio signal;
The wireless transmitter includes a step of modulating the converted digital audio signal into an RF signal and transmitting through the antenna,
Here, the antenna includes a radiating part for radiating radio waves, a grounding part for connecting the ground plane and the radiating part, and a feeding part for supplying current to the radiating part,
Here, the radiating part is composed of a first line formed in parallel with a predetermined distance spaced from the ground plane,
The ground part may include a second line vertically connected to one end of the first line, a third line parallel to the first line at a predetermined distance, and parallel to the second line, and connected to the third line. And a fourth line connected vertically, connected to a ground plane, and including a hole.
The wireless receiver receives the RF signal through the antenna,
Demodulating the received RF signal into a digital audio signal by the wireless receiver;
Converting, by the audio decoding processing unit, the demodulated digital audio signal into an analog audio signal;
A speaker for reproducing the converted analog audio signal,
Here, the antenna includes a radiating part for radiating radio waves, a grounding part for connecting the ground plane and the radiating part, and a feeding part for supplying current to the radiating part,
Here, the radiating part is composed of a first line formed in parallel with a predetermined distance spaced from the ground plane,
The ground part may include a second line vertically connected to one end of the first line, a third line parallel to the first line at a predetermined distance, and parallel to the second line, and connected to the third line. And a fourth line connected vertically, connected to a ground plane, and including a hole.
An audio encoding processor for receiving an analog audio signal from a device requiring output of audio data and converting the received analog audio signal into a digital audio signal;
And a wireless transmitter for modulating the converted digital audio signal into an RF signal and transmitting the same through an antenna.
Here, the antenna includes a radiating part for radiating radio waves, a grounding part for connecting the ground plane and the radiating part, and a feeding part for supplying current to the radiating part,
Here, the radiating part is composed of a first line formed in parallel with a predetermined distance spaced from the ground plane,
The ground part may include a second line vertically connected to one end of the first line, a third line parallel to the first line at a predetermined distance, and parallel to the second line, and connected to the third line. And a fourth line connected vertically, connected to a ground plane, and including a hole.
A radio receiver for receiving an RF signal through an antenna and demodulating the received RF signal into a digital audio signal;
An audio decoding processing unit converting the demodulated digital audio signal into an analog audio signal;
A speaker for reproducing the converted analog audio signal,
Here, the antenna includes a radiating part for radiating radio waves, a grounding part for connecting the ground plane and the radiating part, and a feeding part for supplying current to the radiating part,
Here, the radiating part is composed of a first line formed in parallel with a predetermined distance spaced from the ground plane,
The ground part may include a second line vertically connected to one end of the first line, a third line parallel to the first line at a predetermined distance, and parallel to the second line, and connected to the third line. An apparatus for receiving data in a wireless transmit / receive system, characterized in that it comprises a fourth line vertically connected to a ground plane and comprising a hole.

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