KR20090068799A - Antenna using air cap technology - Google Patents

Antenna using air cap technology Download PDF

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Publication number
KR20090068799A
KR20090068799A KR1020070136560A KR20070136560A KR20090068799A KR 20090068799 A KR20090068799 A KR 20090068799A KR 1020070136560 A KR1020070136560 A KR 1020070136560A KR 20070136560 A KR20070136560 A KR 20070136560A KR 20090068799 A KR20090068799 A KR 20090068799A
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KR
South Korea
Prior art keywords
antenna
radiator
main
air
dielectric
Prior art date
Application number
KR1020070136560A
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Korean (ko)
Inventor
강병윤
Original Assignee
(주)아이져글로벌
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Priority to KR1020070136560A priority Critical patent/KR20090068799A/en
Publication of KR20090068799A publication Critical patent/KR20090068799A/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2291—Supports; Mounting means by structural association with other equipment or articles used in bluetooth or WI-FI devices of Wireless Local Area Networks [WLAN]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/08—Radiating ends of two-conductor microwave transmission lines, e.g. of coaxial lines, of microstrip lines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Waveguide Aerials (AREA)

Abstract

A multi-band antenna using internal/external air-cap technology is provided to reduce the total thickness of an antenna by attaching an adhesive material and emitters on an upper part of an antenna's cap. A master dielectric(200) is formed by a main connection pin(205). A supporting plate(207) represents a substrate which supports an antenna. A ground air-layer complementary material(209) is formed on the supporting plate in constant thickness. A main ground surface(202) is formed on the ground air-layer complementary material in constant thickness. A main emitter(201) is formed on the main ground surface in order to emit and absorb electromagnetic wave. An emission air-layer complementary material(210) surrounds the main emitter in constant thickness.

Description

Antenna using air cap technology

The present invention relates to an antenna using air cap technology, and in particular, receives a signal generated from the system to radiate a predetermined frequency, and receives a signal from the system to a space and a radiator for propagating and receiving the signal generated from the system in free space In addition to balancing the layers with air gaps, they also match impedance matching, and increase the gain of the antenna with a ground layer to increase ground unit area on one layer and a radiator auxiliary layer to increase radiation efficiency. It functions to limit the radiated radiation, and to provide a portion for connecting the connector between the radiator and the system, and to provide a cap and chip that surrounds the radiator with air and a connecting portion for chipping .

Recently, with the rapid development of wireless communication technology, various mobile communication services and wireless services such as GPS, GSM, WCDMA, WLAN, and RFID are realized.

These services can only meet the customer's needs if the technical specifications for changing the market environment requiring light and small size, multi-band, and good antenna efficiency are possible.

In addition, such an example is disclosed in Korean Patent Publication No. 0675383 (January 22, 2007).

That is, the document is as shown in Figure 1, the ultra-small ultra-wideband microstrip antenna 100, the dielectric substrate 10, the feed line 20, the main radiator 30, a plurality of connecting portions (35a, 35b), A feed line 20, a main radiator 30, a plurality of connecting portions 35a and 35b, and a plurality of sub radiators 40a and 40b, including a plurality of sub radiators 40a and 40b and ground plates GND1 and GND2. Is a conductive conductor and has the feature of tin plating on the conductor plate to prevent corrosion.

However, the technique disclosed in the above-mentioned Republic of Korea Patent Publication No. 0675383 (January 22, 2007), etc., when the antenna is miniaturized, as the unit area of the ground plane and the radiator becomes smaller, the resonant frequency moves to a higher frequency and thus one resonant frequency. There is a problem in that it is difficult to maintain, there is a limit in securing the gain of the antenna, there is a limit in reducing the thickness of the antenna chip to reduce the system mounting and weight.

In addition, the Republic of Korea Patent Publication No. 0675383 has a problem that there is a limit to limit the back-lobe radiating back affecting the system.

An object of the present invention is to solve the problems described above, and is suitable for the speculative specifications requiring changes in the market environment requiring light and small size and multi-band, good antenna efficiency, impedance matching and resonance It is easy to reduce the production cost and provide the antenna using air cap technology which reduces the processing cost when combined with the system.

According to the antenna using the air cap technology according to the present invention, however, the multi-band internal and external antenna is suitable for technical specifications requiring changes in the market environment requiring light and short and small band, good antenna efficiency, The result is that the antenna can be fabricated to reduce the production cost by combining impedance and resonance easily and to reduce the processing cost when combined with the system.

In order to achieve the above object, the antenna using the air cap technology according to the present invention has a structure of a patch antenna, a support cross section formed of a substrate supporting the antenna, a ground air layer complementary material formed on a side with a constant thickness on the support cross section, A conductive main ground plane formed on a side of the ground air layer complementary material having a constant thickness, a main radiator formed on the main ground plane to emit and suck electromagnetic waves, and a radiation air layer complementary material surrounding the main radiator and having a constant thickness; It is characterized by.

The antenna using the air cap technology according to the main configuration of the present invention, in the structure of a patch antenna, a support cross section made of a substrate for supporting the antenna, a conductive auxiliary ground plane formed side by side with a constant thickness on the support cross section, the auxiliary A ground air layer complementary material in contact with an upper portion of the ground plane, a conductive main ground plane formed on a side of the ground air layer complementary material with a constant thickness, a main dielectric formed of a material having a constant dielectric constant on the main ground plane, and the main dielectric material A main radiator which is fixed to emit and inhale electromagnetic waves, a radiating air layer complementary material surrounding the main radiator and having a constant thickness, and an auxiliary radiator which is fixed in parallel to the radiating air layer complementary material to emit and inhale electromagnetic waves, and is in contact with the auxiliary radiator, Auxiliary oils consisting of dielectric materials formed side by side Sieve, a connecting pin for electrically connecting the main radiator and a lower portion of the support cross section, a connector connecting portion for connecting to an external power source through the connecting pin, a support for fixing and maintaining the auxiliary dielectric and the support cross section, and the support stand It consists of a support fixture for coupling and fixing to the auxiliary dielectric.

Hereinafter, with reference to the accompanying drawings will be described a preferred embodiment of the present invention, through which the object and features of the present invention will be more clearly.

2 is a view showing a basic structure of a short band antenna according to the present invention, FIG. 3 is a view showing a cap structure of a short band antenna according to the present invention, and FIG. 4 is a cap type of a short band antenna according to the present invention. 5 is a view showing a grating structure, Figure 5 is a view showing the air layer thickness of the short-band antenna according to the present invention, Figure 6 is a view showing the basic structure of a multi-band antenna structure according to the present invention, Figure 7 is the present invention 8 is a view showing a multi-band antenna cap-type structure according to the present invention, FIG. 8 is a view showing a multi-band antenna cap-type lattice structure according to the present invention, FIG. 9 is a view showing a multi-band antenna cap-type inner adhesive structure according to the present invention, 10 is a view showing the adhesive structure outside the multi-band antenna cap according to the present invention, Figure 11 is a view of the multi-band antenna according to the present invention FIG. 12 is a view showing the thickness of a fish layer, and FIG. 12 is a view comparing the structure of an air cap antenna and a conventional antenna according to the present invention. FIG. 13 is a view showing an input reflection coefficient S11 of the antenna according to the related art. Is a view showing the input reflection coefficient (S11) of the air cap antenna according to the present invention, Figure 15 is an input reflection coefficient (S11) of the air cap antenna according to the present invention and the input reflection coefficient (S11) of the antenna according to the prior art Figure 16 is a view showing the gain of the antenna according to the prior art, Figure 17 is a view showing the gain of the air cap antenna according to the present invention, Figure 18 is an air layer thickness of the air cap antenna according to the present invention It is a figure which shows the characteristic change according to.

As shown in FIG. 2, referring to the basic structure of a short band antenna according to an exemplary embodiment of the present invention, the main dielectric 200 is formed of a connection pin 205 by adding a formation pattern such as the main radiator 201. It is a formation that shows basic characteristics.

In addition, the main dielectric 200 and the auxiliary radiator 204 have the same structure according to the characteristic requirements, such as the correlation between the main ground plane 202 and the main radiator 201.

The gain and radiation characteristics of the antenna are determined according to the structure of the length and width of the main radiator 201 and the subsidiary radiator 204.

The main radiator 201, the auxiliary radiator 204 and the auxiliary ground plane 206 should be balanced horizontally.

For this equilibrium structure, a support 211 is fixed between the support end surface 207 and the auxiliary dielectric 203 and the support fixture 212 is locked.

In addition, the radiating air layer complementing material 210 is inserted between the main radiator 201 and the auxiliary radiator 204 to maintain the plane parallelism.

In addition, a ground air layer complementing material 209 is inserted between the auxiliary ground plane 206 and the main ground plane 202 to maintain flat parallelism, and the connecting pin 205 is fixed to the lower portion of the support end surface 207. It is connected to the connector connection portion 208.

The radiation efficiency and characteristic values of the main radiator 201 of the main dielectric 200 and the auxiliary radiator 204 of the auxiliary dielectric 203 change according to their position, role of the radiator, and the ground plane. The characteristic value changes with the characteristic.

As shown in Figure 3, when looking at the cap-shaped structure of the short-band antenna according to an embodiment of the present invention, the air surrounding the cap 220 protects the characteristics and efficiency obtained by the structure of each layer (206, 202, 200, 201, 204, 203), It stabilizes the characteristics, enables mass production through the connecting pin 205, the connector connecting portion 208, the chip structure 221, and facilitates the production under an automatic process.

As shown in FIG. 4, the short band antenna cap grating structure according to the embodiment of the present invention is fixed using the ground air layer grating 230 and the radiating air layer grating 231 instead of the complementary material.

As shown in FIG. 5, a diagram showing the thickness of a short band antenna air layer according to an embodiment of the present invention forms a characteristic of a frequency reflector according to the distance T2 of the air layer, and parallels the spacing. In order to achieve this, the ground air layer supplementary material 209 is inserted and fixed.

The characteristic of the fundamental frequency influences the frequency according to the change in the interval T1 based on the dielectric constant 1 of the air between the main radiator 201 and the auxiliary radiator 204.

As shown in FIG. 6, referring to the basic structure of a multi-band antenna structure according to an embodiment of the present invention, the main dielectric 300 has the same formation pattern as that of the main radiator 301, and the secondary dielectric 303. And the secondary radiator 304 is also formed as a connecting pin 307 by adding a formation pattern to exhibit basic characteristics.

In addition, multi-resonant and multi-band antennas are formed according to the formation pattern of the secondary radiator 304 and the tertiary radiator 309.

In addition, the main dielectric 300 and the auxiliary ground plane 305 are characterized by the same structure in accordance with the requirements of the interconnection between the main ground plane 302 and the main radiator 301.

Gain and radiation characteristics of the antenna is determined according to the structure of the length and width of the main radiator 301, the secondary radiator 304 and the tertiary radiator 309, the main radiator 301 and the secondary radiator 304, The tertiary radiator 309 and the auxiliary ground plane 305 should be balanced horizontally.

For this equilibrium structure, a support 312 is fixed between the support cross section 306 and the secondary dielectric 303 and the tertiary dielectric 308 and locked with the support fixture 313.

In addition, the radiating air layer complementary material 311 is inserted between the main radiator 301 and the secondary radiator 304 to maintain the plane parallelism.

And a space grating 315 is inserted between the support 312 to maintain the balance between the secondary dielectric 303 and the tertiary radiator 309.

Here, reference numeral 310 denotes a ground air layer complementary material, reference numeral 314 denotes a connecting pin solder, and reference numeral 316 denotes a connector connection portion.

As shown in FIG. 7, the multi-band antenna cap structure according to the present invention is fixed using the cap 320 and the chip structure 321.

As shown in FIG. 8, the multi-band antenna cap type grating structure according to the present invention is fixed using the ground air layer grating 330 and the radiating air layer grating 331 instead of the complementary material.

As shown in FIG. 9, the multi-band antenna cap type internally bonded structure according to the present invention reduces the overall height according to the gap of the air layer between the secondary radiator 304 and the tertiary radiator 309, and the process efficiency is improved. For this purpose, the adhesive material 340 may be bonded to the tertiary radiator 341 to be bonded to the cap 320 to form a structure.

In this case, the tertiary radiator 341 may use a thin thin film or film substrate.

As shown in FIG. 10, the adhesive structure outside the multi-band antenna cap according to the present invention combines the adhesive material 340 and the tertiary radiator 341 on the cap 320 and attaches it in a post process to increase the overall thickness. It is a technique that can reduce and manage the process more efficiently.

In this case, the third radiator 341 may use a thin thin film or film type substrate, and the distance between the secondary radiator 304 and the tertiary radiator 309 may be adjusted by the thickness of the cap 320.

As shown in Figure 11, the air layer thickness of the multi-band antenna according to the present invention forms the characteristics of the frequency reflector (Reflector) according to the distance T3 of the air layer, the ground air layer in order to parallel the spacing The grid 330 is inserted and fixed.

As shown in FIG. 12, when comparing the structure of a conventional antenna according to the present invention and an air cap antenna according to the present invention, a side view of a conventional antenna is formed from a bottom up to a feed line, a dielectric, and a radiator. On the other hand, according to the present invention, the air cap antenna according to the present invention forms a layer from the bottom up in the order of the feeder, the dielectric, the air layer, and the radiator, so that the thickness of the substrate according to the dielectric constant is determined, but the air cap antenna It is not influenced by the thickness of a board | substrate, and the characteristic changes with the thickness of an air layer.

As shown in FIG. 13, the input reflection coefficient S11 of the antenna according to the related art shows resonance characteristics of the antenna, and the resonance point is about −3 dB and about 1.6 GHz at about 1.5 GHz as a characteristic of the formed pattern. At about -2.9 dB.

As shown in Figure 14, the input reflection coefficient (S11) of the air cap antenna according to the present invention can sufficiently obtain the resonance efficiency of the desired band by using the air cap while maintaining the conventional antenna formation pattern.

That is, it can be seen that the resonance point having a sharp bandwidth of about -16dB at about 1.5GHz, and the input reflection coefficient (S11) is also about -13dB superior to the conventional antenna.

As shown in FIG. 15, a diagram comparing input reflection coefficients S11 of a conventional antenna and an air gap antenna according to the present invention confirms a single graph of resonance characteristics of the conventional antenna and the antenna according to the present invention. Can be.

The thick line shows the input reflection coefficient (S11) for the frequency of the air cap antenna, and the thin line shows the input reflection coefficient (S11) for the frequency of the conventional antenna. It is clear that this sharpness is also large.

As shown in FIG. 16, the gain characteristic of the antenna according to the related art indicates that the gain is 1.0512579 dBi at a frequency of 1540 MHz.

As shown in FIG. 17, the gain characteristic of the air cap antenna according to the present invention indicates that the gain is 1.25997 dBi at a frequency of 1530 MHz. That is, even if only the structure characteristics are applied, the air cap antenna is about 20% higher than that of the conventional antenna. It can be seen that the gain is improved.

As shown in Figure 18, the characteristic change according to the air layer thickness of the air cap antenna according to the present invention can obtain an antenna of various frequency characteristics as the thickness of the air layer.

That is, the input reflection coefficient S11 for the air gap change is drawn.

As mentioned above, although the invention made by this inventor was demonstrated concretely according to the said Example, this invention is not limited to the said Example and can be variously changed in the range which does not deviate from the summary.

1 is a perspective view of a microstrip antenna in the conventional CPW (Coplanar waveguide) feeding method,

2 is a view showing a basic structure of a short band antenna according to the present invention;

3 is a view showing a cap-shaped structure of a short band antenna according to the present invention;

4 is a view showing a cap-shaped grating structure of the short-band antenna according to the present invention,

5 is a view showing the air layer thickness of the short-band antenna according to the present invention,

6 shows a basic structure of a multiband antenna structure according to the present invention;

7 is a view showing a multi-band antenna cap structure according to the present invention;

8 is a view showing a multi-band antenna cap-type grating structure according to the present invention,

9 is a view showing a multi-band antenna cap type inner adhesive structure according to the present invention;

10 is a view showing the adhesive structure outside the multi-band antenna cap according to the present invention,

11 is a view showing the air layer thickness of the multi-band antenna according to the present invention,

12 is a view comparing the structure of an air cap antenna and a conventional antenna according to the present invention,

13 is a view showing an input reflection coefficient (S11) of the antenna according to the prior art,

14 is a view showing an input reflection coefficient (S11) of the air cap antenna according to the present invention,

15 is a view illustrating an input reflection coefficient S11 of an air cap antenna according to the present invention and an input reflection coefficient S11 of an antenna according to the related art;

16 is a view showing a gain of a conventional antenna;

17 is a view showing the gain of the air cap antenna according to the present invention,

18 is a view showing a characteristic change according to the air layer thickness of the air cap antenna according to the present invention,

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

200: main dielectric

201: main radiator

202: main ground plane

Claims (12)

In the structure of a patch antenna, A support section made of a substrate supporting the antenna, Ground air layer complementary material formed in a constant thickness side by side on the support end surface, A conductive main ground plane formed on the ground air layer complementary side by side at a constant thickness, A main radiator formed on the main ground plane to emit and suck electromagnetic waves; An antenna using an air cap technology, characterized in that it comprises a radiation air layer complementary material surrounding the main radiator and having a predetermined thickness. The method of claim 1, And the ground air layer complementary material contacts an auxiliary ground plane formed of a conductive conductive plate to a lower layer thereof, and contacts a main ground plane formed of a conductive conductive plate to an upper layer thereof. The method of claim 1, And the main radiator is in contact with a main dielectric formed of a dielectric material on a lower layer thereof. The method of claim 1, And the radiating air layer complementary material is in contact with a secondary radiator formed of a conductive material thereon. The method of claim 4, wherein And the secondary radiator is in contact with a secondary dielectric formed of a dielectric material thereon. The method of claim 2, The antenna is a U-shaped lid in close contact with the upper portion of the auxiliary ground plane, the support that protrudes outward is an antenna using air cap technology, characterized in that formed by the chip structure. The method according to claim 1 or 4, The antenna includes a radiating air layer lattice surrounding, holding and reinforcing a support for supporting a layer between the secondary radiator and the auxiliary ground plane, and a ground air layer lattice surrounding, holding and reinforcing the connecting pin passing through the auxiliary ground plane. Antenna using air cap technology, characterized in that it further comprises. The method of claim 5, The antenna forms a third radiator and a third dielectric using a space grating and a support fixture on the secondary dielectric, and the free space is formed between the secondary dielectric and the third radiator. Antenna using air cap technology. The method of claim 8, And the antenna is filled with an adhesive material instead of a third dielectric between the lid and the third radiator. The method of claim 9, The antenna uses an air cap technology, characterized in that to form an adhesive material and a third radiator on the lid instead of forming an adhesive material and a third radiator under the lid. The method of claim 1, The radiator is an antenna using an air cap technology, characterized in that formed by a thin metal film. The method according to claim 1 or 2, The auxiliary ground plane is an antenna using an air cap technology, characterized in that formed in the lower portion of the ground air layer complementary material is made of a ground layer to widen the ground plane to improve electrical performance.
KR1020070136560A 2007-12-24 2007-12-24 Antenna using air cap technology KR20090068799A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190123195A (en) 2018-04-23 2019-10-31 삼성전기주식회사 Antenna apparatus and antenna module
KR20200024815A (en) 2018-04-23 2020-03-09 삼성전기주식회사 Antenna apparatus
US11233336B2 (en) 2019-02-08 2022-01-25 Samsung Electro-Mechanics Co., Ltd. Chip antenna and chip antenna module including the same

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190123195A (en) 2018-04-23 2019-10-31 삼성전기주식회사 Antenna apparatus and antenna module
KR20200024815A (en) 2018-04-23 2020-03-09 삼성전기주식회사 Antenna apparatus
US10854978B2 (en) 2018-04-23 2020-12-01 Samsung Electro-Mechanics Co., Ltd. Antenna apparatus and antenna module
US11211709B2 (en) 2018-04-23 2021-12-28 Samsung Electro-Mechanics Co., Ltd. Antenna apparatus and antenna module
US11233336B2 (en) 2019-02-08 2022-01-25 Samsung Electro-Mechanics Co., Ltd. Chip antenna and chip antenna module including the same

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