CN201789070U

CN201789070U - Multiband antenna

Info

Publication number: CN201789070U
Application number: CN 201020261490
Authority: CN
Inventors: 蔡永志; 苏嘉宏; 施凯
Original assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Current assignee: Foxlink Electronics Dongguan Co Ltd; Cheng Uei Precision Industry Co Ltd
Priority date: 2010-07-09
Filing date: 2010-07-09
Publication date: 2011-04-06
Anticipated expiration: 2020-07-09

Abstract

The utility model discloses a multiband antenna, which comprises an antenna unit arranged on a circuit substrate, a radiation plate and a ground plate. The antenna unit includes a connecting portion, a first extension portion, a second extension portion, a first radiation portion, a grounding portion and a second radiation portion, the radiation plate is in the shape of an elongated sheet and vertically fixed to one lateral edge of the circuit substrate, one side of the first radiation portion, one side of the connecting portion and one side of the second radiation portion are all welded to the radiation plate, the ground plate in the shape of an elongated sheet is vertically fixed to the other lateral edge of the circuit substrate, and the grounding portion and the ground plate are welded together. Through the arrangement, the multiband antenna reduces manufacturing cost, and can realize transceiving electromagnetic signals of various communication systems.

Description

Multifrequency antenna

Technical field

The utility model relates to a kind of multifrequency antenna, relates in particular to a kind of multifrequency antenna that is applied on the mobile computer.

Background technology

Along with the high speed development of mobile communication, people more and more wish just can enter the Internet whenever and wherever possible by a mobile computer or other portable terminal device.Wireless-access mode based on GPRS (General Packer Radio Service, GPRS) and WLAN (Wireless Local Area Network, WLAN (wireless local area network)) has satisfied this demand of people to a certain extent.GPRS is the wireless network that a wide area covers, and WLAN is the wireless network that a local covers, and people cooperate portable terminal devices such as mobile computer, whenever and wherever possible the Access Network internet by selecting different wireless network cards.

At present, WLAN (wireless local area network) is mostly based on bluetooth (Bluetooth) technical standard or IEEE802.11 series standard.The working band of antenna drops on 2.4GHz in the Bluetooth technology standard, and the working band of antenna falls within 2.4GHz and 5GHz respectively in the IEEE802.11 series technique standard, and the GPRS working band falls within 900MHz, 1800MHz and 1900MHz.

But, multifrequency antenna in the above-mentioned general communication system is the manufacturing cost height not only, and the electromagnetic wave frequency range of high band of being received and dispatched and low-frequency range still is difficult to satisfy the needs of current electronic product radio communication, thereby is unfavorable for the universalness of multifrequency antenna in electronic product.

The utility model content

The purpose of this utility model is that providing a kind of at above-mentioned the deficiencies in the prior art reduces cost and can receive and dispatch the electromagnetic multifrequency antenna of multiple frequency range.

For achieving the above object, multifrequency antenna audio socket connector provided by the utility model comprises that one is arranged at antenna element, a radiation fin and the ground strip on the circuit substrate, and this antenna element comprises a junction, one first extension, one second extension, one first Department of Radiation, a grounding parts and one second Department of Radiation; The limit, left side of this connecting portion extends back and forms described first extension, and the rear portion of this first extension stretches out and forms described second extension, and the margo dexter rear end of this second extension is provided with a load point; The right side edge of described second extension extends to form described first Department of Radiation, this first Department of Radiation comprise one to the right and the one first radiation connecting portion that extends of turning forward, by the end of this first radiation connecting portion one the 3rd extension that forms of horizontal-extending and also be bent to form one first a L shaped radiation end left to the right by terminal vertical the extension forward of the 3rd extension; The margo dexter of described second extension vertically stretches out and forms a described grounding parts; This second Department of Radiation is arranged at circuit substrate one side away from first Department of Radiation, and this second Department of Radiation has about one grows limit and by growing the radiation minor face that the limit left end extends forward to the radiation of extending; The elongated sheet of this radiation fin, this radiation fin are erected to be fixed on the lateral margin of this circuit substrate, one side the first radiation end, connecting portion and second Department of Radiation all with the welding of this radiation fin; The elongated sheet of this ground strip, this ground strip are fixed on another lateral margin of this circuit substrate, are used for ground connection, described grounding parts and the welding of this ground strip.

As mentioned above, the utility model multifrequency antenna is arranged at antenna element and radiation fin on the circuit substrate, thereby reduce the manufacturing cost of antenna, and the structure by first Department of Radiation, second extension, radiation fin, ground connection end is arranged, the electromagnetic wave signal of communication systems such as containing GSM750, GSM850, GSM900, DCS1800, PCS1900, WCDMA2100 and E-UTRA2.4G be can realize receiving and dispatching, thereby portable type electronic product needs transmitting-receiving multiband, wide band electromagnetic requirement satisfied.

Description of drawings

Fig. 1 is the three-dimensional combination figure of the utility model multifrequency antenna.

Fig. 2 is the front view of multifrequency antenna shown in Figure 1.

Each description of reference numerals is as follows among the figure:

Multifrequency antenna 100

Antenna element 10 connecting portions 11

First extension, 12 second extensions 13

Load point 131 grounding parts 14

Ground connection connecting portion 141 ground connection ends 142

143 first Departments of Radiation 15 of slotting

The first radiation connecting portion 151 the 3rd extension 152

The first radiation end, 153 second Departments of Radiation 16

The long limit of radiation 161 radiation minor faces 162

Groove 163 circuit substrates 20

Radiation fin 30 ground strips 40

Embodiment

In order to describe technology contents of the present utility model, structural feature, the purpose that realizes and effect in detail, give explanation below in conjunction with execution mode and conjunction with figs. are detailed.

See also Fig. 1, the utility model multifrequency antenna 100 comprises that one is arranged at the antenna element 10 on the circuit substrate 20, the ground strip 40 that a radiation fin 30 and is used for ground connection.This antenna element 10 can be connected to radio circuit (not shown) in the mobile computer by feeder line.

See also Fig. 2, this antenna element 10 is arranged on the surface of this circuit substrate 20, can directly be made by the Copper Foil on the circuit substrate 20.This antenna element 10 comprises a junction 11, first extension 12, one second extension 13, a grounding parts 14, one first Department of Radiation 15 and one second Department of Radiation 16.Described this connecting portion 11 is rectangular tabular, and the middle part, limit, left side of this connecting portion 11 extends back and forms first a tabular extension 12, and the rear portion of this first extension 12 stretches out and forms second a tabular extension 13.This connecting portion 11, this first extension 12 and this second extension 13 are stepped.

The margo dexter rear end of this second extension 13 is provided with a load point 131, the margo dexter of this second extension 13 vertically stretches out and forms a grounding parts 14, this grounding parts 14 comprises the ground connection connecting portion 141 of a strip and extends back and bending left extends to form a L shaped ground connection end 142 along the end of this ground connection connecting portion 141, form a fluting 143 between this ground connection end 142 and this ground connection connecting portion 141, this fluting 143 can make ground connection end 142 and ground connection connecting portion 141 play the effect of simulaed inductance, to regulate the input impedance of the utility model multifrequency antenna 100, the input impedance of this multifrequency antenna 100 and the characteristic impedance of feeder line are mated with minimizing return loss, thereby improve the transmitting-receiving performance and the efficient of 100 pairs of low frequency signals of the utility model multifrequency antenna.

The right side edge of described second extension 13 extends to form one first Department of Radiation 15, and this first Department of Radiation 15 is used to receive and dispatch the electromagnetic wave signal of high band.This first Department of Radiation 15 comprise one to the right and the one first radiation connecting portion 151 that extends of turning forward, by the end of this first radiation connecting portion 151 one the 3rd extension 152 that forms of horizontal-extending and also be bent to form one first a L shaped radiation end 153 left to the right by terminal vertical the extension forward of the 3rd extension 152.

Please continue and consult Fig. 2, described second Department of Radiation 16 is arranged at circuit substrate 20 1 sides away from first Department of Radiation 15, and this second Department of Radiation 16 has about one grows limit 161 and by growing the radiation minor face 162 that the limit left end extends forward to the radiation of extending.

Described radiation fin 30 is the iron plate of a strip sheet, is used to receive and dispatch the electromagnetic wave signal of low-frequency range, and this radiation fin 30 is erected to be fixed on the lateral margin of this circuit substrate 20.The long limit 161 of the radiation of this second Department of Radiation 16 be arranged in parallel with this radiation fin 30, the radiation minor face 162 of this second Department of Radiation 16 is welded on the surface of this radiation fin 30, be formed with a groove 163 between this second Department of Radiation 16 and this radiation fin 30, this groove 163 can increase the electrical length of this radiation fin 30, makes this radiation fin 30 realize bigger electrical length with short physical length.Wherein all weld with radiation fin 30 with one side of connecting portion 11 the first radiation end 153.

This ground strip 40 is the ironware of a strip, it is erected to be fixed on another lateral margin of this circuit substrate 20, be arranged in parallel with this radiation fin 30, form the effect of coupling between this ground strip 40 and this second extension 13, feasible and this second extension 13 is equivalent to an electric capacity in parallel, can play the effect of electric capacity, the impedance of adjusting high frequency to be increasing resonance point, and then reaches the effect that increases the high frequency frequency range.This ground strip 40 is used to be connected in reference to the ground (not shown).Described ground connection end 142 and these ground strip 40 welding.

When the utility model multifrequency antenna 100 is used to communicate by letter, by and second extension 13 be equivalent to an electric capacity in parallel, shunt capacitance can produce the effect of coupling, can adjust the impedance of high frequency, and then increase the bandwidth of high frequency, make that this first Department of Radiation 15 can be that the electromagnetic wave resonance of 2.3GMHZ～2.7GHZ is received and dispatched the electromagnetic wave signal of DCS1800, PCS1900, WCDMA2100 and E-UTRA2.4G communication system with frequency.

By increasing the electrical length of radiation fin 30, strengthened the transmitting-receiving usefulness of radiation fin 30, ground connection end 142 is equivalent to an inductance in parallel, plays the effect of simulaed inductance, and then makes this multifrequency antenna 100 to reach impedance matching with low-frequency channel.During these radiation fin 30 transmitting-receiving low-frequency electromagnetic waves, simulaed inductance effect by ground connection end 142, can adjust the bandwidth of low-frequency band, make that radiation fin 30 can be that the electromagnetic wave resonance of 704MHz～787MHz is received and dispatched the electromagnetic wave signal of GSM750, GSM850 and GSM900 communication system with frequency.

In sum, the utility model multifrequency antenna 100 is arranged at antenna element 10 and radiation fin 30 on the circuit substrate 20, thereby reduces the manufacturing cost of antenna.Structure by first Department of Radiation 15, second extension 13, radiation fin 30 and ground connection end 142 is arranged, the electromagnetic wave signal of communication systems such as containing GSM750, GSM850, GSM900, DCS1800, PCS1900, WCDMA2100 and E-UTRA2.4G be can realize receiving and dispatching, thereby portable type electronic product needs multiband, wide band electromagnetic requirement satisfied.

Claims

1. multifrequency antenna, it is characterized in that: comprise that one is arranged at antenna element, a radiation fin and the ground strip on the circuit substrate, this antenna element comprises a junction, one first extension, one second extension, one first Department of Radiation, a grounding parts and one second Department of Radiation; The limit, left side of this connecting portion extends back and forms described first extension, and the rear portion of this first extension stretches out and forms described second extension, and the margo dexter rear end of this second extension is provided with a load point; The right side edge of described second extension extends to form described first Department of Radiation, this first Department of Radiation comprise one to the right and the one first radiation connecting portion that extends of turning forward, by the end of this first radiation connecting portion one the 3rd extension that forms of horizontal-extending and also be bent to form one first a L shaped radiation end left to the right by terminal vertical the extension forward of the 3rd extension; The margo dexter of described second extension vertically stretches out and forms a described grounding parts; This second Department of Radiation is arranged at circuit substrate one side away from first Department of Radiation, and this second Department of Radiation has about one grows the radiation minor face that the limit left end extends forward to the long limit of the radiation of extending and by radiation; The elongated sheet of this radiation fin, this radiation fin are erected to be fixed on the lateral margin of this circuit substrate, one side the first radiation end, connecting portion and second Department of Radiation all with the welding of this radiation fin; The elongated sheet of this ground strip, this ground strip are fixed on another lateral margin of this circuit substrate, are used for ground connection, described grounding parts and the welding of this ground strip.

2. multifrequency antenna as claimed in claim 1 is characterized in that: the long limit of the radiation of described second Department of Radiation and this radiation fin be arranged in parallel, are formed with a groove between this second Department of Radiation and this radiation fin.

3. multifrequency antenna as claimed in claim 1 is characterized in that: described grounding parts comprises the ground connection connecting portion of a strip and along the end of this ground connection connecting portion extends back and bending left extends to form a ground connection end.

4. multifrequency antenna as claimed in claim 3 is characterized in that: form a fluting between wherein said ground connection end and this ground connection connecting portion.