CN201417818Y

CN201417818Y - Sheet-type multilayer radio-frequency antenna

Info

Publication number: CN201417818Y
Application number: CN2009200095631U
Authority: CN
Inventors: 梁启新; 廖财亮; 郑文豪; 蓝建伟; 张薇
Original assignee: SHENZHEN MICROGATE TECHNOLOGY Co Ltd
Current assignee: SHENZHEN MICROGATE TECHNOLOGY Co Ltd
Priority date: 2009-03-18
Filing date: 2009-03-18
Publication date: 2010-03-03
Anticipated expiration: 2019-03-18

Abstract

The utility model discloses a sheet-type multilayer radio-frequency antenna applied to consumer electronic products such as blue teeth, notebook computers and the like. The antenna comprises a base body and a conductor circuit arranged inside the base body, the conductor circuit includes more than one horizontally arranged conductor sheet and more than one vertically arranged conductor post, and the conductor sheet and the conductor post are in head-to-tail sequential connection so as to form a rectangular stereoscopic spiral shape. One end of the conductor circuit is electrically connected with an input/output end outside the base body, and the other end of the conductor circuit is electrically connected with another input/output end outside the base body. The sheet-type multilayer radio-frequency antenna has the advantages of low return loss, low dielectric loss, high radiation efficiency, high gain, high reliability and the like.

Description

A kind of chip multilayer radio-frequency antenna

Technical field

The utility model discloses a kind of radio-frequency antenna, particularly a kind of chip multilayer radio-frequency antenna that is applied in the consumer electronics products such as bluetooth, notebook computer.

Background technology

Along with development of science and technology, mechanics of communication is just with the speed of the making rapid progress development that shoots ahead, Wi-Fi is WLAN (WLAN) system, have transmission speed height, coverage to grow, be not subjected to the advantages such as restriction of wiring condition, most of notebook computers and a lot of family, office network system have all adopted the Wi-Fi technology.The Bluetooth transmission technology, be actually a kind of short-distance wireless communication technology, can simplify the communication between the mobile communication terminal devices such as palmtop PC, notebook computer and mobile phone handsets effectively, also can successfully simplify communicating by letter between above these equipment and the Internet, thereby make the transfer of data between these modern communications equipments and the internet become efficient more rapidly, be the radio communication widening road.The develop rapidly of Modern wireless communication technology is more and more higher to the requirement of antenna, traditional external whip antenna, helical antenna once were the main flows of portable terminal, but, pursue product miniaturization, lightening today day by day people, traditional antenna just seems very huge heaviness can not satisfy people's requirement.

Summary of the invention

At the traditional external antenna in the above-mentioned Radio Transmission Technology of mentioning of the prior art because of its bulky heaviness, can not satisfy people's requirement day by day, the SMD radio-frequency antenna that the utility model provides a kind of LTCC of employing technology to make, it comprises the matrix that high frequency low permittivity ceramic material constitutes, be provided with the square spiral shape conductor circuit that conductor material is made in the matrix, conductor circuit one end is electrically connected with an I/O end in the matrix outside, the other end is electrically connected with another I/O end in the matrix outside, forms the chip radio-frequency antenna.

The technical scheme that its technical problem that solves the utility model adopts is: a kind of chip multilayer radio-frequency antenna, antenna comprises matrix and is arranged on the interior conductor circuit of matrix, conductor circuit comprises horizontally disposed more than one conductor piece and the more than one conductor pin that vertically is provided with, described conductor piece and conductor pin head and the tail are connected to form the three-dimensional helical form of rectangle in turn, conductor circuit one end is electrically connected with matrix I/O end outward, and the conductor circuit other end is electrically connected with matrix another I/O end outward.

The technical scheme that its technical problem that solves the utility model adopts further comprises:

Described conductor piece lays respectively at up and down in two planes, and the conductor piece in two planes is parallel to each other.

Distance in the described same plane between the adjacent conductor sheet is identical.

Described conductor pin lays respectively in former and later two planes, and the conductor pin in two planes is parallel to each other.

Distance in the described plane between the adjacent conductor post is identical.

Described outer surface of matrix one side is provided with direction signs.

The beneficial effects of the utility model are: the utility model is realized the structure that it is inner special by good casting molding processes, and the various characteristics of antenna all adheres to specification under the characteristic frequency thereby be implemented in.It has advantages such as low return loss, low dielectric loss, high radiation efficiency, high-gain and high reliability.It is little that the utility model not only has size, in light weight, isotropic preferably advantage, and possesses the low-cost advantage of producing in enormous quantities economically, the compliance with wireless communication product is to gently, and is thin, the trend that short and small direction develops, become the focus of Recent study, and in manufacturing process, can obtain the antenna of different performance requirement by continuous change structure, material and technology.

Below in conjunction with the drawings and specific embodiments the utility model is described further.

Description of drawings

Fig. 1 is the utility model overall structure schematic diagram.

Fig. 2 is the utility model internal structure schematic diagram.

Fig. 3 is the utility model radio-frequency antenna return loss schematic diagram.

Among the figure, 1-matrix, 2-I/O end, 3-direction signs, 4-conductor piece, 5-conductor pin, 6-input and output conductor piece.

Embodiment

Present embodiment is the utility model preferred implementation, and other all its principles are identical with present embodiment or approximate with basic structure, all within the utility model protection range.

Please referring to accompanying drawing 1 and accompanying drawing 2, Fig. 1 is the utility model overall structure schematic diagram, the utility model sees from the outside and mainly comprises matrix 1 that matrix 1 is made of high frequency low permittivity ceramic material, plays the effect of fixed internal, raising mechanical strength, increase device reliability.Matrix 1 two ends are provided with I/O end 2, and an end is provided with direction signs 3 on the matrix 1, and in the present embodiment, direction signs 3 are imprinted on matrix surface by the green printing slurry of special use in the mode of silk screen printing, to indicate the directivity of product; Matrix 1 length direction two ends are respectively I/O end 3, are input port near direction signs 3 one ends wherein, are output port away from direction signs 3 one ends.

Please, realize that electrical property of the present utility model is mainly by structure realization in the accompanying drawing 2 referring to accompanying drawing 2.Be the structure of the utility model conductor circuit in the accompanying drawing 2, it makes and forms on have certain thickness high frequency low permittivity ceramic material by good casting molding processes.In the present embodiment, conductor circuit is connected to form in turn by conductor piece 4 and conductor pin 5 head and the tail, conductor piece 4 is distributed in up and down in two planes, conductor piece in two planes is parallel to each other, and the distance in each plane between the adjacent conductor piece is identical, by the central task frequency that the width and the spacing of conductor piece 4 can be adjusted antenna, electrical parameters such as voltage standing wave ratio and bandwidth.Conductor pin 5 is distributed in former and later two planes, conductor pin 5 in two planes is parallel to each other, and the distance in each plane between the adjacent conductor pin is identical, in the present embodiment, conductor pin 5 is cylindrical, and diameter, post height and the intercolumniation etc. by regulating conductor pin 5 can be adjusted central task frequency, voltage standing wave ratio and the bandwidth of antenna or the like electrical parameter.The mode of conductor pin 5 and conductor piece 4 is in the utility model: the preceding first conductor pin head end is connected with input and output conductor piece 6, the preceding first conductor pin tail end is connected with the following first conductor piece head end, the first conductor piece tail end is connected with the back first conductor pin head end down, back first conductor pin is connected with the last first conductor piece head end, and the last first conductor piece tail end is connected with the preceding second conductor pin head end ... back N conductor pin is connected with other end input and output conductor piece 6.The conductor piece 4 and the conductor pin 5 that connect in turn by head and the tail form the spiral helicine conductor circuit of square cubics, and conductor circuit is similar to spring shape, are its three-dimensional helical form that is square with the difference of spring.

Please referring to accompanying drawing 3, among Fig. 3 be the utility model at Bluetooth transmission frequency range 2.4-2.48GHz, WIFI operating frequency 2.4-2.5GHz by adjusting the various structural parameters of radio-frequency antenna recited above, can be met the Bluetooth antenna product of performance requirement.Fig. 3 is two intervals up and down that radio-frequency antenna return loss schematic diagram: A and C two curves are represented the Bluetooth transmission frequency range respectively, need the frequency curve B of product be controlled between these two curves, to meet electrical requirement.

Claims

1, a kind of chip multilayer radio-frequency antenna, antenna comprises matrix and is arranged on the interior conductor circuit of matrix, it is characterized in that: described conductor circuit comprises horizontally disposed more than one conductor piece and the more than one conductor pin that vertically is provided with, described conductor piece and conductor pin head and the tail are connected to form the three-dimensional helical form of rectangle in turn, conductor circuit one end is electrically connected with matrix I/O end outward, and the conductor circuit other end is electrically connected with matrix another I/O end outward.

2, chip multilayer radio-frequency antenna according to claim 1 is characterized in that: described conductor piece lays respectively at up and down in two planes, and the conductor piece in two planes is parallel to each other.

3, chip multilayer radio-frequency antenna according to claim 2 is characterized in that: the distance in the described same plane between the adjacent conductor sheet is identical.

4, chip multilayer radio-frequency antenna according to claim 1 is characterized in that: described conductor pin lays respectively in former and later two planes, and the conductor pin in two planes is parallel to each other.

5, chip multilayer radio-frequency antenna according to claim 4 is characterized in that: the distance in the described plane between the adjacent conductor post is identical.

6, according to any described chip multilayer radio-frequency antenna among the claim 1-5, it is characterized in that: described outer surface of matrix one side is provided with direction signs.