CN201298588Y - Multi-frequency 3-D antenna for portable computer - Google Patents

Abstract

The utility model relates to a multi-frequency 3-D antenna for portable computer. The antenna comprises a strip 3-D bracket and a first radiation unit, a second radiation unit, a feed unit and an earth unit installed on the 3-D bracket. The first radiation unit is a strip metallic sheet with fixed width placed on a first side of the 3-D bracket and connected with radio frequency circuit in the computer through the feed unit. The second radiation unit is placed on the three sides adjacent and opposite to the first side on the 3-D bracket, and is connected with the ground wire on the portable computer through the earthed unit at the side opposite to the fist side on the 3-D bracket. The multi-frequency 3-D antenna of the utility model is a parameterized antenna model which reduces the limit of the portable computer capacity to the antenna performance at a vast scale, and fixes the uncertain factors on the parameter adjustment, solves the fault of randomness and contingency of the antenna design and improves the design efficiency of the antenna of the portable computer.

Description

A kind of multifrequency three-dimensional antenna that is used for notebook computer

Technical field

The utility model relates to the multifrequency antenna field that a kind of notebook computer is used, and specifically is meant a kind of parametrization of notebook computer, standardized WWAN multifrequency three-dimensional antenna of being used for.

Background technology

In recent years, notebook computer is more and more comprehensive to the requirement of antenna function, and its built-in W WAN multifrequency antenna develops towards low-frequency range, little space, high-performance direction, and product form adds the 3D antenna that support or FPC add support based on metal clips.The frequency range that present WWAN antenna has required to cover comprises 824MHz-960MHz, 1710MHz-2170MHz, and GPS1575MHz, TDSCDMA2025MHz etc., according to the basic principle of antenna, the wide more antenna volume of the frequency range of covering requires big more.And opposite, notebook computer more and more develops to portability, lightening small size form, and its space of leaving antenna for is more and more littler, and the two contradiction becomes increasingly conspicuous.How to adapt to ever-reduced computer frame height, make full use of horizontal space, the development volume is littler, the better 3D antenna of performance becomes the task of top priority.

At present, the contradiction at the two does not have highly effective solution in the industry, maximum square methods be temporarily by software emulation or repeatedly experiment come the designing antenna cabling, reach the radiation of antenna multiband, and when routing of layout, take into account the input impedance of antenna.And reach the unfixing sequencing of these two targets, and to carry out simply by virtue of engineer's experience, uncertainty is very big.In fact, these methods can not solve all notebook computer Antenna Design difficult problems fully, run into that notebook antenna volume itself is smaller, circumstance complication, cost requirement be lower, the R﹠D cycle requires under the short situation above measure more powerless.Simultaneously, the lifting of the assurance communication appliance performance that above step can not be stable and the order of R﹠D process to the accumulation of research and development technology in the industry with develop unfavorablely, make antenna performance become bottleneck and yoke that notebook computer performance improves.These all are the emphasis and the difficult point of the development of communication apparatus design industry.

The utility model content

The purpose of this utility model is the three-dimensional antenna model of a kind of normalizing parameterization of design and small size, make it can pass through flexibly parametrization method of adjustment easily, adapt to various different notebook computer antenna multiband radiation requirements,, reduce R﹠D costs to shorten the R﹠D cycle as far as possible.

For achieving the above object, the technical scheme taked of the utility model is:

A kind of multifrequency three-dimensional antenna that is used for notebook computer is provided, comprises a strip three-dimensional bracket and be installed on radiation body, feed element and ground unit on the three-dimensional bracket.Described radiation body comprises first radiating element and second radiating element.First radiating element is connected with computer internal radio frequency circuit by feed element, described first radiating element is the fixing strip sheet metal structure of width, the three-dimensional bracket side at its place is first side, and first side of described three-dimensional bracket is a bigger side of three-dimensional bracket area.Described second radiating element places on the three-dimensional bracket on second and third adjacent and relative with first side and four sides, and is connected with ground wire on the notebook computer by ground unit on the three-dimensional bracket side adjacent with first side.

Described second radiating element comprise the strip sheet metal that covers three-dimensional bracket second side and to extended first radiation arm in the 4th side, cover the strip sheet metal of three-dimensional bracket the 3rd side and to extended second radiation arm in the 4th side, first, second radiation arm is the fixing sheet metal of width, and does not contact on three-dimensional bracket the 4th side.

Multifrequency antenna described in the utility model is reduced to space factor minimum to the influence of antenna performance, satisfied the requirement of ultrathin notebook PC.The antenna model of normalizing parameterization like this, reduced of the constraint of the interior space of notebook to a great extent to antenna performance, with the uncertain factor basic fixed in the adjusting of parameter, solved the defective of Antenna Design randomness and contingency, improved the standardization level of product, be expected to realize volume production as the standardization accessory; Improve the notebook antenna design efficiency, shortened the R﹠D cycle, reduced cost.

Description of drawings

Fig. 1 is a perspective view of the present utility model; Fig. 2 is another visual angle perspective view of the utility model; Fig. 3 is the utility model embodiment one structural representation; Fig. 4 is the utility model embodiment two structural representations; Fig. 5 is the utility model user mode schematic diagram; Fig. 6 is an A part enlarged drawing shown in Figure 5.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples.

As figure, described multifrequency three-dimensional antenna comprises a strip three-dimensional bracket 1 and is installed on radiation body 2, a feed element 3 and a ground unit on the three-dimensional bracket.Described radiation body comprises first radiating element 21 and second radiating element 22.First radiating element places on the bigger side 11 of an area of three-dimensional bracket and by feed element 3 and is connected with computer internal radio frequency circuit.Described second radiating element place on the three-dimensional bracket with 11 adjacent two sides, side and with 11 opposite flanks 14, side on.

First kind of execution mode of the present utility model such as Fig. 1,2, shown in 3, described second radiating element 22 comprises strip sheet metal 22-1 that covers on three-dimensional bracket second side (observing second side of the side adjacent with 11 the right, side as three-dimensional bracket from Fig. 1 left here) and the longer radiation arm 22-2 that an extended width is fixed on support side 14 thereof, cover the strip sheet metal 22-3 of three-dimensional bracket the 3rd side and the shorter radiation arm 22-4 that fixes to support side 14 extended width thereof, described longer radiation arm i.e. first radiation arm, and shorter radiation arm i.e. second radiation arm.

The utility model also can adopt second kind of execution mode, as Fig. 1,2, shown in 4: promptly described second radiating element comprises that the strip sheet metal 22-3 and the sheet metal 22-3 that are positioned on three-dimensional bracket second side (observing second side of the side adjacent with 11 left sides, side as three-dimensional bracket from Fig. 1 left here) take back the position to the fixing shorter radiation arm 22-4 of the side of three-dimensional bracket 14 extended width, be positioned at the strip sheet metal 22-1 of three-dimensional bracket the 3rd side and the longer radiation arm 22-2 that fixes to side 14 extended width thereof, described shorter radiation arm is first radiation arm, and longer radiation arm is second radiation arm.

Described radiation body 2 can adopt antenna shrapnel material commonly used or the contained metal materials of FPC such as phosphor bronze, stainless steel, and three-dimensional bracket 1 can adopt the ABS engineering plastics or have the medium of similar dielectric constant.Described feed element 3 is a coaxial cable, and its inner core links to each other with radiating element, outer good earth; Ground unit is a conducting objects.

The utility model is based on the monopole antenna basic principle, ingenious radiation characteristic in conjunction with antenna ground parasitic element, utilize ground parasitic element, the wideband radiation of the wideband radiation of the covering 824MHz ~ 960Mz frequency range of one is long and the other is short in promptly described second radiating element two radiation arms produce respectively lower frequency and the covering 1710MHz ~ 2170MHz of upper frequency.First radiating element that connects out from the radiofrequency signal distributing point is not as main radiating element, and it mainly acts on is that excitation second radiating element produces radiation, and by with the coupling of second radiating element, be that the notebook computer of different model is regulated matched impedance.Described first radiating element and the second radiating element relative position are fixed, and the radiation live width is fixed, and the length of long and short two arms of second radiating element is as the parameter of adjusting the low-and high-frequency center frequency points, the first radiating element length is as the balance option of regulating between antenna efficiency height and the frequency bandwidth, and it can make balance according to the actual needs of notebook computer between efficient and bandwidth.Antenna size beyond the parameter, for example radiation live width can be according to the size specific designs of space size and three-dimensional bracket in the notebook, but that this radiation live width is set the back is constant, not as the adjusting parameter of antenna performance.Above-mentioned three adjustable length parameters are simple, effective, comprehensive, really accomplished comprehensive parametrization design of notebook antenna.

The utility model structure can be reused at device interior, i.e. while a plurality of antennas of shared same metal ground placement in same notebook computer.

Described multifrequency antenna is applicable to the notebook computer of following type:

1, have the metal framework structure spare that the area of plane surpasses 100cm^2, connect with antenna as the metal ground of antenna, generally notebook computer all can satisfy.

2, reserving folded form notebook computer or the reservation aerial position of aerial position on the screen top is frame non-folded form notebook computer all around.

3, be baseline with upper edge, metal ground, the antenna top is a non-metallic areas.

Antenna described in the utility model generally is applicable to various like environment and the situation within the qualifications scope, has the wide spectrum applicability.

Claims (4)

1, a kind of multifrequency three-dimensional antenna that is used for notebook computer, comprise a strip three-dimensional bracket and be installed on radiation body, feed element, ground unit on the three-dimensional bracket, it is characterized in that: described radiation body comprises first radiating element and second radiating element; First radiating element is connected with computer internal radio frequency circuit by feed element, and described first radiating element is the fixing strip sheet metal structure of width, and the three-dimensional bracket side at its place is first side; Described second radiating element is positioned on second and third adjacent and relative with first side and four sides, and is connected with ground wire on the notebook computer by ground unit on the side adjacent with first side of three-dimensional bracket.

2, the multifrequency three-dimensional antenna that is used for notebook computer according to claim 1 is characterized in that: described second radiating element comprise the strip sheet metal that covers three-dimensional bracket second side and to extended first radiation arm in the 4th side, cover the strip sheet metal of three-dimensional bracket the 3rd side and to extended second radiation arm in the 4th side.

3, according to the three-dimensional multifrequency antenna that is used for notebook computer described in the claim 2, it is characterized in that: described first, second radiation arm is the fixing sheet metal of width, and does not contact on three-dimensional bracket the 4th side.

4, according to the three-dimensional multifrequency antenna that is used for notebook computer described in the claim 3, it is characterized in that: first side of described three-dimensional bracket is a bigger side of three-dimensional bracket area.

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