TWI414104B - Multi - frequency antenna structure for notebook computers - Google Patents

Abstract

This invention relates to a multi-frequency antenna structure for notebook computer, it is mainly to equip the upper metal piece of main antenna on the top of the insulated antenna carrying board that is installed on the top the monitor, and to equip the grounding metal piece on the insulated antenna carrying board. The insulated antenna carrying board is also equipped with an inverse "L"-shaped antenna. Moreover, a first capacitor, a second capacitor, a feed point and/or an inductor are disposed between the inverse "L"-shaped antenna and the main antenna in a separated manner. The optimal compatible design of the antenna structure can be achieved by adjusting the capacitances of the first and second capacitors and the inductance of the inductor and their positions.

Description

Multi-frequency antenna structure for notebook computers

The invention relates to a multi-frequency antenna structure for a notebook computer, in particular to an antenna structure design scheme in which a capacitor and an inductor are arranged in an antenna structure to adjust and match.

Due to the continuous innovation of wireless RF signal communication technology, mobile devices must be equipped with multi-frequency antennas to operate at multiple frequencies. Multi-frequency metal planar antennas have been used as mainstream components in cell phones or notebook computers to receive or transmit wireless signals.

Traditionally, metal planar antennas are connected to boards in mobile devices and are connected through an SMT component. Since the general SMT component is designed to have some fixed standard value impedance, the antenna still needs a matching circuit to adjust the capacitance and the inductance value, which will cause inconvenience in the antenna design and limit the bandwidth and efficiency of the antenna, which needs to be improved.

Therefore, how to provide a design method of the antenna structure, so that the size of the antenna structure is reduced, and the operating frequency can be adjusted to achieve the matching function is the main discussion area of the present invention.

Therefore, the present invention provides a multi-frequency antenna structure for a notebook computer, which is mainly disposed on an insulated antenna carrier plate disposed above the screen, and a metal piece above the main antenna is disposed above the insulating antenna carrier board. The grounding metal piece is disposed on the insulated antenna carrier board; and an inverted L type antenna is further disposed on the insulated antenna carrier board. In addition, a first capacitor, a second capacitor, an antenna feed point and/or an inductor are separately disposed between the inverted L antenna and the main antenna. The capacitance value of the first and second capacitors and the magnitude and position of the inductance of the inductor are adjusted to achieve an optimal matching design of the antenna structure.

The invention can adjust the matching of the antenna structure by using the increased capacitance and/or inductance in the antenna structure, and the adjustment of the antenna structure by using the capacitance value and the inductance value and the position adjustment, so that the volume of the entire antenna structure is greatly reduced, and the multi-frequency can be achieved. The effect.

Hereinafter, the structure and effect of the present creation will be described in detail based on the embodiments shown in the drawings.

Referring to FIG. 1 , it is a first embodiment of a multi-frequency antenna structure for a notebook computer according to the present invention. Referring to the second figure, the antenna structure 1 can be installed on the screen 9 of a notebook computer. For the radio frequency signal transmission, the antenna structure 1 of the present invention mainly comprises an insulated antenna carrier 11, a main antenna 12, an inverted L antenna 13, a first capacitor 14, a second capacitor 15, and an antenna. The feed point 16 is formed.

As shown in the first and second figures, the main antenna 12 has an upper metal piece 121 and a grounded metal piece 122; the upper metal piece 121 is disposed above the insulated antenna carrier 11; and the grounded metal piece 122 is disposed. The upper end 1221 of the insulating antenna carrier 11 is connected to the upper metal piece 121 and has an L-shaped portion 1222. The middle portion of the long axis 1222A of the L-shaped portion 1222 extends a bent portion 1223. The bent portion 1223 extends downward. A grounding portion 1224 is formed which is connected to the screen 9 to be grounded, and the screen 9 is a ground plane.

The inverted L-shaped antenna 13 is also disposed on the insulated antenna carrier 11, and its short axis 131 is located beside the short axis 1222B of the grounded metal piece 122L-shaped portion 1222, and the long axis 132 is parallel to the upper metal piece 121.

The first capacitor 14 is connected between the short axis 131 of the inverted L antenna 13 and the short axis 1222B of the ground metal piece 122L portion 1222. The second capacitor 15 is connected between the end of the short axis 1222B of the L-shaped portion 1222 of the grounding metal piece 122 and the ground portion 1224. In addition, an antenna feed point 16 is provided at the end of the short axis 1222B of the inverted L antenna 13.

In the antenna structure 1 of the present invention, the radio frequency signal is input from the antenna feed point 16 through the inverted L antenna 13 and the L-shaped portion 1222 long axis 1222A of the ground metal piece 122 transmitted to the main antenna 12 by the first capacitor 14. End.

It should be noted that in the antenna structure 1 of the present invention, the first and second capacitors 14 and 15 have the function of matching antennas, and the position of the first capacitor 14 can be moved up and down to have a matching function for the antenna structure 1.

In the antenna structure 1 of the present invention, the connection position of the upper end of the meandering portion 1223 of the main antenna 12 in the grounding metal piece 122 and the long axis 1222A of the L-shaped portion 1222 can be moved to match the antenna structure 1 to form an inductor grounding function. .

Furthermore, in the antenna structure 1 provided by the present invention, the size of the capacitance of the first capacitor 14 and the second capacitor 15 and the position of the upper end of the bent portion 1223 and the long axis 1222A of the L-shaped portion 1222 are adjusted to the antenna. Structure 1 is optimized for matching.

Referring to FIG. 3, it is a second embodiment of a multi-frequency antenna structure for a notebook computer according to the present invention. The antenna structure 2 can be installed on a screen 9 of a notebook computer for wireless RF signals. The antenna structure 2 of the present invention mainly comprises an insulated antenna carrier 21, a main antenna 22, an inverted L antenna 23, a first capacitor 24, a second capacitor 25, an antenna feed point 26, and An inductor 27 is formed.

As shown in the third to fourth figures, the main antenna 22 has an upper metal piece 221 and a grounded metal piece 222; the upper metal piece 221 is disposed above the insulated antenna carrier 21; and the grounded metal piece 222 is disposed on The upper end 2221 of the insulating antenna carrier 21 is connected to the upper metal piece 221 and has an L-shaped portion 2222. The middle portion of the long axis 2222A of the L-shaped portion 2222 extends a connecting portion 2223, and the connecting portion 2223 extends downward. A grounding portion 2224 is connected to the screen 9 for grounding, and the screen 9 is a ground plane.

The inverted L-shaped antenna 23 is also disposed on the insulated antenna carrier 21, and its short axis 231 is located beside the short axis 2222B of the grounded metal piece 222L-type portion 2222, and the long axis 232 is parallel to the upper metal piece 221.

The first capacitor 24 is connected between the short axis 231 of the inverted L-shaped antenna 23 and the short axis 2222B of the ground metal piece 222L-type portion 2222. The second capacitor 25 is connected between the long axis 2222A of the L-shaped portion 2222 of the grounding metal piece 222 and the ground portion 2224. Further, an antenna feed point 26 is provided at the end of the short axis 231 of the inverted L antenna 23. Further, the inductor 27 is connected between the end of the short axis 231 of the L-shaped antenna 23 and the end of the ground portion 2224 of the ground metal piece 222.

It should be noted that in the antenna structure 2 of the present invention, the radio frequency signal is input by the antenna feeding point 26, and is passed through the inverted L antenna 23 and the L-shaped portion 2222 of the grounding metal piece 222 transmitted to the main antenna 22 by the first capacitor 24. Long axis 2222A end.

In the antenna structure 2 of the present invention, the second capacitor 25 can be moved between the long axis 2222A of the L-shaped portion 2222 of the grounding metal piece 222 and the ground portion 2224 to match the antenna structure 2 to find the most Good location.

Furthermore, in the antenna structure 2 provided by the present invention, the antenna structure 2 is optimally matched by adjusting the magnitude and position of the capacitance of the first capacitor 24 and the second capacitor 25 and the inductance value of the inductor 27.

Referring to FIG. 5, it is the antenna standing wave reflectance of the second embodiment of the present invention. It can be seen that the antenna structure of the present invention can have the following operating frequencies:

1.700MHz~960MHz

2.1710MHz~2170MHz

3.2500MHz~2700MHz

Moreover, according to the actual design, the size of the second embodiment of the present invention can be shortened by 10 mm compared with the first embodiment.

The insulated antenna carrier of the present invention can be of any shape and functions as a fixed antenna. The shape and type of the insulated antenna carrier are generally commonly known structures and are not shown in the drawings.

Referring to FIG. 6 , a third embodiment of a multi-frequency antenna structure for a notebook computer according to the present invention is provided. The antenna structure 3 can be installed on a screen 9 of a notebook computer for wireless RF signals. Transmission; the antenna structure 3 of the present invention is mainly composed of an insulated antenna carrier 31, a main antenna 32, an inverted L antenna 33, a first capacitor 34, an adjustable component 35, and an antenna feed point 36. Composition.

The insulated antenna carrier 31 is provided above the screen 9 in conjunction with the sixth and seventh figures. The main antenna 32 has an upper metal piece 321 and a grounded metal piece 322. The upper metal piece 321 is disposed above the insulated antenna carrier 31, and the grounded metal piece 322 is disposed on the insulated antenna carrier 31. The upper end 3221 of the grounding metal piece 322 is connected to the upper metal piece 321 and has a strip portion 3222 and a reverse-shaped land portion 3223. The end of the strip portion 3222 is connected to the reverse-shaped ground portion 3223 by an adjustable element 35. The reverse-shaped land portion 3223 is connected to the screen 9 to be grounded, and the screen 9 is a ground plane.

The inverted L-shaped antenna 33 is also disposed on the insulated antenna carrier 31, and its short axis 331 is located beside the end of the strip portion 3222 of the grounded metal piece 322, and the long axis 332 is parallel to the upper metal piece 321.

The first capacitor 34 is connected between the short axis 331 of the inverted L-shaped antenna 33 and the end of the strip portion 3222. The adjustable element 35 is connected between the end of the strip portion 3222 of the grounding metal piece 322 and the end of the reverse-shaped land portion 3223. Further, an antenna feed point 36 is provided at the end of the short axis 331 of the inverted L antenna 33.

It should be noted that in the antenna structure 3 of the present invention, the radio frequency signal is input from the antenna feeding point 36, and is transmitted to the strip portion 3222 of the grounding metal piece 322 of the main antenna 32 through the inverted L type antenna 33 and the first capacitor 34. End. The first capacitor 34 and the adjustable component 35 all have the purpose of matching the antenna. The adjustable component 35 serves as a different frequency resonance point for adjusting the antenna; and the adjustable component 35 can be a tunable component such as a tunable inductor or a tunable capacitor.

In the antenna structure 3 of the present invention, the adjustable component 35 can be moved to the left and right of the interval between the strip portion 3222 of the grounding metal piece 322 and the reverse-shaped land portion 3223, thereby adjusting the impedance matching of the antenna; The capacitance value of the first capacitor 34 also has the same effect. The adjustable characteristics of the adjustable element 35 can be used to adjust the different resonant frequency points of the antenna.

Referring to the eighth embodiment, it is the antenna standing wave reflectance of the third embodiment of the present invention. It can be seen that the antenna structure 3 of the present invention utilizes the adjustable characteristics of the adjustable component 35 to achieve the effect of the LTE frequency band, and the adjustable frequency range is 704 MHz to 960 MHz.

In summary, the present invention utilizes the added capacitance and inductance in the antenna structure, adjusts the capacitance value and the magnitude and position of the inductance value, and can achieve the matching of the antenna structure, and no additional matching circuit is needed, thereby greatly reducing the entire antenna structure. The volume occupied. Therefore, the present invention fully complies with the patent requirements and submits an application according to law.

1. . . Antenna structure

122. . . Grounding metal sheet

11. . . Insulated antenna carrier

1221. . . Upper end

12. . . Main antenna

1222. . . L-shaped part

121. . . Upper metal piece

1222A. . . Long axis

1222B. . . Short axis

1223. . . Zigzag

1224. . . Grounding

13. . . Inverted L antenna

131. . . Short axis

132. . . Long axis

14. . . First capacitor

15. . . Second capacitor

16. . . Antenna feed point

2. . . Antenna structure

twenty one. . . Insulated antenna carrier

twenty two. . . Main antenna

221. . . Upper metal piece

222. . . Grounding metal sheet

2221. . . Upper end

2222. . . L-shaped part

2222A. . . Long axis

2222B. . . Short axis

2223. . . Connection

2224. . . Grounding

twenty three. . . Inverted L antenna

231. . . Short axis

232. . . Long axis

twenty four. . . First capacitor

25. . . Second capacitor

26. . . Antenna feed eight points

27. . . inductance

3. . . Antenna structure

31. . . Insulated antenna or board

32. . . Main antenna

321. . . Upper metal sheet

322. . . Grounding metal sheet

3221. . . Upper end

3222. . . Band

3223. . . Ruthenoid grounding

33. . . Inverted L antenna

331. . . Short axis

332. . . Long axis

34. . . First capacitor

35. . . Adjustable component

36. . . Antenna feed point

9. . . Screen

The first figure represents a three-dimensional appearance of the first embodiment of the present invention,

The second figure represents a plan view of the first embodiment of the present invention,

The third figure represents a three-dimensional appearance of the second embodiment of the present invention,

Figure 4 is a plan view showing a second embodiment of the present invention,

Figure 5 is a graph showing the reflectance of the standing wave of the antenna of the second embodiment of the present invention,

Figure 6 is a perspective view showing a third embodiment of the present invention,

Figure 7 is a plan view showing a third embodiment of the present invention,

The eighth diagram represents a graph of the standing wave reflectance of the antenna of the third embodiment of the present invention.

2. . . Antenna structure

twenty one. . . Insulated antenna carrier

twenty two. . . Main antenna

221. . . Upper metal sheet

222. . . Grounding metal sheet

twenty three. . . Inverted L antenna

231. . . Short axis

232. . . Long axis

twenty four. . . First capacitor

25. . . Second capacitor

26. . . Antenna feed point

27. . . inductance

9. . . Screen

Claims (10)

The utility model relates to a multi-frequency antenna structure for a notebook computer, which can be arranged on a screen of a notebook computer for wireless RF signal transmission; the system comprises: an insulated antenna carrier board disposed above the screen; a main antenna, An upper metal piece and a grounding metal piece; the upper metal piece is disposed above the insulating antenna carrier; and the grounding metal piece is disposed on the insulating antenna carrier, the upper end of which is connected to the upper metal piece, and An L-shaped portion, the middle portion of the L-shaped main shaft extends a bent portion, the bent portion extends downward to form a ground portion, the ground portion is connected to the screen to be grounded; and an inverted L-shaped antenna is disposed on the The insulating antenna carrier board has a short axis located beside the short axis of the L-shaped portion of the grounding metal piece, and the long axis is parallel to the upper metal piece; a first capacitor is connected to the short axis of the inverted L type antenna Between the short axis of the L-shaped portion of the grounded metal sheet; a second capacitor connected between the short-axis end of the L-shaped portion of the grounded metal piece and the ground portion; and an antenna feed point disposed at The short axis end of the inverted L antenna; The radio frequency signal is input from the antenna feed point, and passes through the inverted L antenna and the L-shaped terminal end of the grounding metal piece transmitted to the main antenna by using the first capacitor; the first and second capacitors have the function of matching antennas And the position of the first capacitor can be moved up and down to have a matching function for the antenna structure. The multi-frequency antenna structure for a notebook computer according to claim 1, wherein a connection position between an upper end of the meandering portion of the main antenna grounding metal piece and the L-shaped main shaft is movable to match the antenna structure. Form an inductor grounding effect. According to the multi-frequency antenna structure for a notebook computer according to claim 1, the capacitance value of the first capacitor and the second capacitor, the position, and the connection position between the upper end of the meandering portion and the L-shaped main shaft are adjusted. The antenna structure is optimally matched. The utility model relates to a multi-frequency antenna structure for a notebook computer, which can be arranged on a screen of a notebook computer for wireless RF signal transmission; the system comprises: an insulated antenna carrier board disposed above the screen; a main antenna, An upper metal piece and a grounding metal piece; the upper metal piece is disposed above the insulating antenna carrier; and the grounding metal piece is disposed on the insulating antenna carrier, the upper end of which is connected to the upper metal piece, and The L-shaped portion has a connecting portion extending from the middle portion of the L-shaped portion, and the connecting portion extends downward to form a ground portion, the ground portion is connected to the screen to be grounded; and an inverted L-shaped antenna is disposed on the portion The insulating antenna carrier board has a short axis located beside the short axis of the L-shaped portion of the grounding metal piece, and the long axis is parallel to the upper metal piece; a first capacitor is connected to the short axis of the inverted L type antenna a second capacitor is connected between the L-shaped main axis of the grounding metal piece and the grounding portion; an antenna feeding point is disposed at the end The end of the short axis of the inverted L-shaped antenna; An inductor is connected between the short-axis end of the inverted-L antenna and the end of the grounding portion of the grounding metal piece; the wireless RF signal is input by the antenna feeding point, passes through the inverted-L antenna, and utilizes the first The capacitor is transmitted to the L-shaped terminal end of the grounding metal piece of the main antenna; the first capacitor, the second capacitor and the inductor have a matching antenna function, and the position of the first capacitor can be moved up and down to match the antenna structure The function. The multi-frequency antenna structure for a notebook computer according to the fourth aspect of the invention, wherein the second capacitor is movable between the L-shaped main shaft of the grounding metal piece and the ground portion to form the antenna structure. Match to find the best position. According to the multi-frequency antenna structure for the notebook computer described in claim 4, the antenna structure is adjusted by adjusting the magnitude and position of the capacitance of the first capacitor and the second capacitor, and the inductance value of the inductor. Optimize the match. The utility model relates to a multi-frequency antenna structure for a notebook computer, which can be arranged on a screen of a notebook computer for wireless RF signal transmission; the system comprises: an insulated antenna carrier board disposed above the screen; a main antenna, An upper metal piece and a grounding metal piece; the upper metal piece is disposed above the insulating antenna carrier; and the upper end of the grounding metal piece is connected to the upper metal piece, and has a strip portion and a reverse earthing ground The end of the strip is connected to the reverse-shaped ground portion by an adjustable element, and the reverse-shaped ground portion is grounded; an inverted L-shaped antenna is disposed on the insulated antenna carrier, and the short-axis position thereof At the end of the strip portion of the grounded metal piece, the long axis is parallel to the upper metal piece; a first capacitor is connected between the short axis of the inverted L type antenna and the end of the strip portion of the grounded metal piece; And an antenna feed point disposed at a short axis end of the inverted L antenna; the wireless RF signal is input by the antenna feed point, passes through the inverted L antenna, and is transmitted to the main antenna by using the first capacitor Ground strip of metal sheet The first capacitor and the adjustable component all have the purpose of matching the antenna, and the adjustable component serves as the resonance point for adjusting the different frequencies of the antenna. The multi-frequency antenna structure for a notebook computer according to claim 7, wherein the adjustable component moves left and right at an interval between the strip portion of the grounded metal piece and the reverse-shaped land portion, thereby adjusting the antenna Impedance matching. The multi-frequency antenna structure for a notebook computer according to claim 7 of the patent application, wherein the adjustable component is a tunable inductor. The multi-frequency antenna structure for a notebook computer according to the seventh aspect of the patent application, wherein the adjustable component is a tunable capacitor.