CN203617432U

CN203617432U - LTE antenna expanding low frequency and high frequency bandwidth

Info

Publication number: CN203617432U
Application number: CN201320710363.5U
Authority: CN
Inventors: 俸德安; 蒋剑虹; 刘文超
Original assignee: SHENZHEN VLG WIRELESS TECHNOLOGY Co Ltd
Priority date: 2013-11-12
Filing date: 2013-11-12
Publication date: 2014-05-28
Anticipated expiration: 2023-11-12

Abstract

The utility model discloses a LTE antenna expanding a low frequency and high frequency bandwidth. The antenna comprises a first line formed by first, second, third and fourth conventional antennas (1,2,3,7) and a second line formed by first, second and third parasitic unit antennas (4,5,6) of a grounding feedback pin. The first line is basically in an irregular ''T'' shape and the second line is basically in a rectangle shape. A certain distance is arranged between the first line and the second line. The first, second and third parasitic unit antennas (4,5,6) and the first, second, third and fourth conventional antennas (1,2,3,7) couple two low-frequency and high-frequency parasitic standing waves. A low frequency resonance frequency is between 824MHz and 960MHz. A high frequency resonance frequency is 1710MHz and 2.4GMHz. Low frequency and high frequency antenna bandwidths are increased and antenna radiation performance is increased.

Description

The LTE antenna of a kind of expansion low-frequency and high frequency bandwidth

Technical field

The utility model relates to mobile communication terminal antenna field, especially relates to the LTE antenna of a kind of expansion low-frequency and high frequency bandwidth.

Background technology

Along with scientific and technological development, attend by the trend in epoch, mobile phone form, also towards ultra-thin trend development, adds the design of metal fuselage, the environment of leaving now antenna for is more and more severe; Antenna for mobile phone develops towards multiband especially, the particularly antenna of LTE frequency range, and expanding the beamwidth of antenna becomes the problem that whole antenna industry is studied always.The appearance of parasitic element has effectively solved the design of 3G band antenna, and current parasitic element is all to colonize in high-frequency band substantially, and an only parasitic standing wave of parasitic element.

Two parasitic element antennas are wider than the low-and high-frequency bandwidth of general PIFA antenna and monopole antenna, being applicable to doing multiband aerial uses, poor when running into antenna environment, when low frequency band bandwidth is not enough, the advantage that just can make full use of the parasitic low frequency of a parasitic element and two standing waves of high frequency improves the performance of antenna.The design of this utility model antenna has adopted two parasitic element antennas, therefore can be applied in above the mobile phone of ultra thin handset and fore shell metal designs.

Utility model content

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of function admirable is provided, broader bandwidth and be applicable to the mobile terminal LTE antenna of multiband design.

The utility model is that the technical scheme that its technical problem of solution is taked is:

A LTE antenna for expansion low-frequency and high frequency bandwidth, comprises first, second, third and the 4th conventional antenna, forms the first circuit of antenna, also comprises first, second, and third parasitic element antenna of ground connection feedback pin, forms the second circuit of antenna, wherein:

Described the first circuit be totally irregular T-shape, first and the 4th conventional antenna that T-shape horizontal edge left side formation is arranged in parallel, and described first is connected at T-shape horizontal edge right-hand member with the 4th conventional antenna; The longitudinal edge of T-shape forms parallel second and the 3rd conventional antenna, and described second is connected with the first conventional antenna in the top with the 3rd conventional antenna;

The second described circuit is totally rectangle, wherein the right of rectangle forms the first parasitic element antenna being arranged in parallel with the 3rd conventional antenna, the base of rectangle forms trixenie element antenna, described the first and second parasitic element antennas are connected by the top of rectangle, extend the second parasitic element antenna top from rectangle in rectangle, and be arranged in parallel with trixenie element antenna;

Between described the first and second circuits, be provided with certain spacing.

As the further improvement of above technical scheme, described first, second, and third parasitic element antenna and described first, second, third and the 4th conventional antenna-coupled go out low frequency and two parasitic standing waves of high frequency, wherein low-frequency resonant frequency is between 824MHz ~ 960MHz, and high-frequency resonant frequency is between 1710MHz ~ 2.4GMHz.

The beneficial effects of the utility model are:

Effectively expanded the bandwidth of high frequency and low frequency than conventional antenna, cover antenna frequency range comprises GSM850/900/DCS1800/PCS1900/ TDSCDMA Band A/Band F and LTE Band 1/Band 3/Band 7/Band 17 FDD.Than similar antenna, the utility model has adopted two parasitic element Antenna Designs, simple in structure, is easy to realize.

Accompanying drawing explanation

By reference to the accompanying drawings, by the detailed description of stating below, can more clearly understand above-mentioned and other feature and advantage of the present utility model, wherein:

Fig. 1 is described antenna embodiment line construction schematic diagram;

Fig. 2 is described antenna and the antenna standing wave comparison diagram of not applying this parasitic element.

Embodiment

The utility model provides the LTE antenna of a kind of expansion low-frequency and high frequency bandwidth, for making the purpose of this utility model, technical scheme and effect clearer, clear and definite, referring to accompanying drawing examples, the utility model is further described.Should be appreciated that concrete case study on implementation described herein is only in order to explain the utility model, and be not used in restriction the utility model.

Referring to Fig. 1, in preferred embodiment of the present utility model, first, second, third and the 4th

conventional antenna

1,2,3 and 7, form the first circuit of antenna, also comprise first, second, and third parasitic element antenna 4,5 and 6 of ground connection feedback pin, form the second circuit of antenna, wherein:

Described the first circuit be totally irregular T-shape, T-shape horizontal edge left side formation be arranged in parallel first and the 4th conventional antenna 1,7, described first be connected at T-shape horizontal edge right-hand member with the 4th conventional antenna 1,7; The longitudinal edge of T-shape form parallel second and the 3rd conventional antenna 2,3, described second be connected with the first conventional antenna 1 in the top with the 3rd conventional antenna 2,3;

The second described circuit is totally rectangle, wherein the right of rectangle forms the first parasitic element antenna 4 being arranged in parallel with the 3rd conventional antenna 3, the base of rectangle forms trixenie element antenna 6, described the first and second parasitic element antennas 4,6 are connected by the top of rectangle, extend the second parasitic element antenna 5 top from rectangle in rectangle, and be arranged in parallel with trixenie element antenna 6;

Described in Fig. 1, second, third can go out low frequency by resonance with the 4th conventional antenna 2,3,7, and the resonance frequency producing is as shown in P1 to P2 in Fig. 2, between 824MHz ~ 880MHz; Described in Fig. 1 first, trixenie element antenna 4,6 can go out low frequency by parasitisms, parasitic resonance frequency is as shown in P2 to P3 in Fig. 2, between 880MHz ~ 960MHz; Described in Fig. 1, second, third can go out high frequency by resonance with the first

conventional antenna

2,3,1, and resonance frequency is as shown in P4 to P7 in Fig. 2, between 1710MHz ~ 2GMHz; Described in Fig. 1, first, second parasitic element antenna 4,5 can go out high frequency by parasitism, and parasitic resonance frequency is as shown in P7 to P9 in Fig. 2, between 2GMHz ~ 2.4GMHz; Can draw thus the utility model low-frequency resonant frequency in Fig. 2 P1 between 824MHz ~ 960MHz of P3, between 1710MHz ~ 2.4GMHz of high-frequency resonant frequency P4 to P9 in Fig. 2, effectively expand as can be seen from Figure 2 the bandwidth of low-and high-frequency than the antenna described in conventional antenna.

Should be understood that; application of the present utility model is not limited to above-mentioned giving an example; for those of ordinary skills, can be improved according to the above description or convert, all these improvement and conversion all should belong to the protection range of the utility model claims.

Claims

1. the LTE antenna of an expansion low-frequency and high frequency bandwidth, it is characterized in that, comprise first, second, third and the 4th conventional antenna (1,2,3 and 7), form the first circuit of antenna, also comprise the first, second, and third parasitic element antenna (4,5 and 6) of ground connection feedback pin, form the second circuit of antenna, wherein:

Described the first circuit be totally irregular T-shape, first and the 4th conventional antenna (1,7) that T-shape horizontal edge left side formation is arranged in parallel, and described first is connected at T-shape horizontal edge right-hand member with the 4th conventional antenna (1,7); The longitudinal edge of T-shape forms parallel second and the 3rd conventional antenna (2,3), and described second is connected with the first conventional antenna (1) in the top with the 3rd conventional antenna (2,3);

The second described circuit is totally rectangle, wherein the right of rectangle forms the first parasitic element antenna (4) being arranged in parallel with the 3rd conventional antenna (3), the base of rectangle forms trixenie element antenna (6), described the first and second parasitic element antennas (4,6) are connected by the top of rectangle, extend the second parasitic element antenna (5) top from rectangle in rectangle, and be arranged in parallel with trixenie element antenna (6);

2. the LTE antenna of expansion low-frequency according to claim 1 and high frequency bandwidth, it is characterized in that, described first, second, and third parasitic element antenna (4,5 and 6) with described first, second, third and the 4th conventional antenna (1,2,3 and 7) be coupled out low frequency and two parasitic standing waves of high frequency, wherein low-frequency resonant frequency is between 824MHz ~ 960MHz, and high-frequency resonant frequency is between 1710MHz ~ 2.4GMHz.