CN201084825Y - Multi-frequency antenna - Google Patents

Abstract

The utility model discloses a multi-frequency antenna, which comprise a radiation part, a grounding part, a connection part and feeder, wherein the radiation part and the grounding part are arranged alternately each other, moreover the radiation part comprises a first radiation sheet and a second radiation sheet, the connection part is connected with the radiation part and the grounding part, the connection part comprises the portion slantwise extended between the radiation part and the grounding. In utility model, the multi-frequency antenna adopts the design that the connection part slantwise extended so that the antenna structure is simpler.

Description

multi-frequency antenna

【Technical field】

The utility model relates to a multi-frequency antenna, in particular to a multi-frequency antenna used in electronic equipment.

【Background technique】

With the rapid development of mobile communications, people increasingly hope that they can access the Internet anytime and anywhere with a notebook computer or other portable terminals. The wireless access mode based on GPRS (General Packer Radio Service, General Packet Radio Service) and WLAN (Wireless Local Area Network, Wireless Local Area Network) meets this demand of people to a certain extent. GPRS is a wireless network with wide area coverage, and its data transmission rate is about 30Kbps to 50Kbps, while WLAN is a wireless network with local area coverage, and its data transmission rate can reach 11Mbps (based on 802.11b technology). People choose different wireless network cards and cooperate with portable terminals such as notebook computers to access the Internet anytime and anywhere. Since the WLAN data transmission rate can reach 11Mbps, public WLAN high-speed data services are provided in some hot spots (hotels, airports, cafes, business centers, convention centers).

At present, wireless local area networks are mostly based on Bluetooth (Bluetooth) technology standards or IEEE802.11 series standards. The working frequency band of the antenna in the Bluetooth technology standard falls on 2.4GHz, and the working frequency band of the antenna in the IEEE802.11 series technical standards falls on 2.4GHz and 5GHz respectively. Therefore, most of the antennas in notebook computers are multi-frequency antennas applied to the above-mentioned frequency bands.

Planar Inverted-F Antenna (Planar Inverted-F Antenna, commonly referred to as "PIFA" antenna in the industry) is a commonly used small antenna for mobile communication terminals. It is characterized by small size and light weight, which can effectively reduce the occupied space and manufacturing cost, good impedance matching, and easy to realize dual-frequency or multi-frequency. China Taiwan Province Patent Announcement No. 563274 discloses a planar inverted "F" type multi-frequency antenna, which includes two radiating parts extending in opposite directions, a grounding part and a connecting part connecting the radiating part and the grounding part. Although the antenna can Multi-frequency work is realized, but the structure of the connecting part is a three-section right-angle bending, and the design of the stamping die will be more complicated.

In view of the above disadvantages, it is indeed necessary to improve the above antenna.

【Content of utility model】

The purpose of the utility model is to provide a multi-frequency antenna with simple structure.

In order to achieve the above object, the utility model adopts the following technical solution: a multi-frequency antenna, which includes: a radiation part, a ground part, a connecting part and a feeder; Two radiating sheets; the connecting portion connects the radiating portion and the grounding portion; the connecting portion includes a portion extending obliquely between the radiating portion and the grounding portion.

In order to achieve the above object, the utility model can also adopt the following technical solution: a multi-frequency antenna, which includes: a radiation part, a ground part, a connecting part and a feeder; the radiation part is arranged at intervals from the ground part and includes a first radiation sheet and the second radiation sheet; the connection part connects the radiation part and the ground part; the connection part is at most two sections, which includes a first end connected to the ground part and a second end connected to the radiation part.

The multi-frequency antenna of the utility model has the following advantages: the structure of the multi-frequency antenna structure is simpler.

【Description of drawings】

Fig. 1 is a perspective view of the first embodiment of the multi-frequency antenna of the present invention.

Fig. 2 is a perspective view of the second embodiment of the multi-frequency antenna of the present invention.

Fig. 3 is a voltage standing wave ratio diagram of the multi-frequency antenna of the present invention.

【Detailed ways】

As shown in FIG. 1 , it is a perspective view of a multi-frequency antenna 1 according to a first embodiment of the present invention. In this embodiment, a multi-frequency antenna 1 is assembled on an electronic device (such as a notebook computer or a mobile phone, etc.) to receive or transmit signals, and it includes a feeder 6 and a radiation part 2 and a connecting part 4 made of a planar metal sheet and ground part 5. The radiating part 2 is longitudinally strip-shaped and includes a first radiating piece 21 and a second radiating piece 22 . The connecting portion 4 extends obliquely upward from the grounding portion 5 for connecting the radiation portion 2 and the grounding portion 5 . The connection part 4 has a first end 43 connected to the ground part 5 and a second end 44 connected to the radiation part 2 . The first radiation piece 21 and the second radiation piece 22 are connected to the second end 44 . The grounding portion 5 is rectangular and has two mounting holes 51 thereon.

The feeder 6 is a coaxial line, including an inner conductor 61, a metal braid 62, an inner insulating layer (not labeled) between the inner conductor 61 and the metal braid 62, and an outer insulating layer (not labeled) covering the metal braid 62. ). The inner wire 61 is welded on the second end 44 of the connecting part 4, and in other embodiments, it can also be welded on other specific positions on the connecting part 4, or on the first and second radiation pieces 21 and 22 adjacent to the second end 44. , and the metal braiding layer 62 is welded on the ground portion 5 .

In addition, the first radiating sheet 21 and the second radiating sheet 22 work in different frequency bands respectively. In this embodiment, it is a wireless local area network (WLAN). The length of the first radiating sheet 21 is proportional to the wavelength corresponding to the higher operating frequency band. The length of the two radiation pieces 22 is proportional to the wavelength corresponding to the lower working frequency band.

As shown in FIG. 2 , it is a perspective view of a multi-frequency antenna 1 ′ according to a second embodiment of the present invention. In this embodiment, a multi-frequency antenna 1' is assembled on an electronic device (such as a notebook computer or a mobile phone, etc.) to receive or transmit signals, and includes a feeder 6, a radiation part 2 and a connecting part 4 made of a planar metal sheet ' and the grounding part 5.

The structure of the multi-frequency antenna 1 ′ is basically the same as that of the multi-frequency antenna 1 , except that the connecting portion 4 ′ and the connection point of the inner wire 61 on the feeder 6 are changed. The connecting part 4' extends obliquely upward from the grounding part 5, and includes a first connecting arm 41', a second connecting arm 42' forming an obtuse angle with the first connecting arm 41', a first end 43' connected to the grounding part, The second end 44' connected to the radiation part 2 and the bent end 45' connected to the first connecting arm 41' and the second connecting arm 42'. The second connecting arm 42 ′ is bent and extended from the upper bent end 45 ′ of the first connecting arm 41 ′, and is perpendicular to the horizontal line where the radiation portion 2 is located.

The feeder 6 is a coaxial line, including an inner conductor 61, a metal braid 62, an inner insulating layer (not labeled) between the inner conductor 61 and the metal braid 62, and an outer insulating layer (not labeled) covering the metal braid 62. ). The inner wire 61 is welded on the bent end 45' of the connecting part 4', and in other embodiments, it can also be welded on other specific positions on the connecting part 4', or on the first and second radiation pieces 21, 22 adjacent to the second end 44 ′, while the metal braid 62 is welded to the ground portion 5 .

As shown in Figure 3, the value of the voltage standing wave ratio of multi-frequency antenna 1, 1 ' of the present invention can work normally between 2.3-2.7GHz and 5.2-6GHz in the working frequency band, promptly shows that the multi-frequency antenna of the present invention 1, 1' can work in these two frequency bands at the same time. The first radiation sheet 21 is used to receive or transmit signals of a higher frequency band (5.2-6 GHz); the second radiation sheet 22 is used to transmit or receive signals of a lower frequency band (2.3-2.7 GHz).

The radiating part 2, the grounding part 5 and the connecting part 4 of the utility model multi-frequency antenna 1, 1' are made of the same plane metal sheet with an appropriate thickness, and can also be formed on a plane insulating substrate ( not shown), the first and second radiation sheets 21, 22 are not limited to this shape and number, and are designed according to the requirements of the video band (such as wireless wide area network (WWAN) or ultra-wideband (UWB), etc.) Variety.

Claims (10)

1. multifrequency antenna, it comprises: Department of Radiation, grounding parts, connecting portion and feeder line; Described Department of Radiation and grounding parts are provided with at interval and comprise first radiation fin and second radiation fin; Described connecting portion connects Department of Radiation and grounding parts; It is characterized in that: described connecting portion is included in the part of diagonally extending between Department of Radiation and grounding parts.

2. multifrequency antenna as claimed in claim 1 is characterized in that: the diagonally extending of described connecting portion is partly for tilting to connect the linear structure of Department of Radiation and grounding parts.

3. multifrequency antenna as claimed in claim 1, it is characterized in that: described connecting portion comprises second linking arm that first linking arm that extends from grounding parts and autoradiolysis portion extend and be connected with first linking arm, and this first linking arm is the diagonally extending part of above-mentioned connecting portion.

4. multifrequency antenna as claimed in claim 3 is characterized in that: described first linking arm becomes the obtuse angle with second linking arm, and described second linking arm is perpendicular to aforementioned Department of Radiation.

5. as each described multifrequency antenna in the claim 1 to 4, it is characterized in that: described feeder line is coaxial line and comprises wire sheathing and inside conductor, the bearing of trend of described inside conductor is vertical substantially with described Department of Radiation and be connected in described connecting portion, and described wire sheathing welds mutually with described grounding parts.

6. multifrequency antenna as claimed in claim 4 is characterized in that: described feeder line is a coaxial line, and its inside conductor is welded in the corner of described first linking arm and second linking arm.

7. multifrequency antenna, it comprises: Department of Radiation, grounding parts, connecting portion and feeder line; Described Department of Radiation and grounding parts are provided with at interval and comprise first radiation fin and second radiation fin; Described connecting portion connects Department of Radiation and grounding parts; It is characterized in that: described connecting portion is at most two-part, and it comprises first end that connects grounding parts and second end that connects Department of Radiation.

8. multifrequency antenna as claimed in claim 7, it is characterized in that: described connecting portion further comprises first linking arm that extends from described grounding parts and second linking arm that extends from described Department of Radiation, and described first linking arm becomes the obtuse angle bending to be connected with second linking arm.

9. multifrequency antenna as claimed in claim 8 is characterized in that: described first, second radiation fin is connected in the second end place and is on same the straight line, and described second linking arm is perpendicular to the residing straight line of first, second radiation fin.

10. multifrequency antenna as claimed in claim 7, it is characterized in that: described feeder line is coaxial line and comprises wire sheathing and inside conductor, the bearing of trend of described inside conductor and first linking arm that be connected in described connecting portion vertical substantially with described Department of Radiation bends the corner that is connected with second linking arm, and described wire sheathing welds mutually with described grounding parts.

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