CN203589216U

CN203589216U - Multiplex antenna capable of integrating diversity reception, GPS communication and WIFI communication

Info

Publication number: CN203589216U
Application number: CN201320738082.0U
Authority: CN
Inventors: 何其娟; 孙劲
Original assignee: Shanghai Amphenol Airwave Communication Electronics Co Ltd
Current assignee: Shanghai Amphenol Airwave Communication Electronics Co Ltd
Priority date: 2013-10-18
Filing date: 2013-11-21
Publication date: 2014-05-07
Anticipated expiration: 2023-11-21
Also published as: CN103606741A; CN103606741B

Abstract

The utility model provides a multiplex antenna capable of integrating diversity reception, GPS communication and WIFI communication, which comprises a shell and an antenna portion, wherein the antenna portion comprises a radiator, a feeding part, an inductor, a first capacitor and a second capacitor, wherein radiator is in the shape of a cover with one end being open, the shell is in the shape of a hollow polygonal body with both ends being open, the opening end of the radiator is connected with one opening end of the shell through an insulating medium. The first capacitor, the second capacitor and the feeding part are sequentially arranged side by side on the upper end face of a connecting part of the radiator and the shell, the feeding part is located at the middle of the upper end face, the inductor is located at the middle of the lower end face opposite to the upper end face, and the feeding part, the first capacitor, the second capacitor and the inductor are all connected with the radiator and the shell. The multiplex antenna provided by the utility model can operate in such three operating frequency bands as diversity reception, GPS communication and WIFI communication, thereby simplifying the antenna design, reducing the use space, and being adapt to the tendency that the space size of the antenna is reduced.

Description

Multiplexing antenna integrating diversity reception, GPS (global positioning system) and WIFI (wireless fidelity) communication

Technical Field

The utility model relates to an antenna design technical field especially relates to a collection diversity reception, multiplexing antenna of GPS and WIFI communication.

Background

With the rapid development of mobile communication, the functions of mobile terminals are becoming more and more abundant, applications such as GPS, BT/WIFI (2.4 GHz), WIFI (5 GHz) and the like are gradually popularized, more antennas are required to cover a new frequency range, and more mobile terminals not only have one main antenna, but also combine a plurality of auxiliary antennas, such as a GPS antenna, a BT antenna and a WIFI antenna. However, the space left for the antennas inside the mobile terminal is very limited, and the antennas occupy a certain space inside the mobile terminal, so the space factor of the antennas becomes a restriction for the miniaturization of the mobile terminal. Therefore, under the condition that the external size and the internal space of the current mobile terminal are both very limited, how to pursue a strong function and enable the volume of the mobile terminal to be light, thin and convenient is a technical problem which needs to be solved urgently.

In addition, in order to improve the wireless performance of communication, a diversity receiving circuit is often added to the product design to reduce the influence of multipath and the like. Currently, more and more wireless terminals can support diversity reception and WIFI functions. The diversity unit and the WIFI unit both use independent antennas, or the diversity unit and the GPS unit use one antenna, and the WIFI unit independently uses the other antenna. But has the following disadvantages: the diversity unit and the WIFI unit both use independent antennas, so that the problem of interference coexistence due to excessive antennas of the same product can be caused; the diversity unit and the GPS unit use one antenna and need to be switched by a radio frequency switch, and the diversity unit and the GPS unit cannot be used simultaneously.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model relates to a diversity reception, GPS and WIFI communication integrated multiplexing antenna, which is arranged in a mobile terminal, and comprises a shell with electric conductivity and an antenna part; wherein,

the antenna part comprises a radiating body, a feeding part, an inductor, a first capacitor and a second capacitor, wherein the feeding part receives a feed source signal, the radiating body is in a cover shape with an opening at one end, and the opening end of the radiating body is connected with the shell through an insulating medium; the first capacitor, the second capacitor and the feed part are sequentially arranged on the upper end face of the joint of the radiator and the shell, the inductor is located on the lower end face of the joint of the radiator and the shell, the inductor is located on one side close to the feed part, and the feed part, the first capacitor, the second capacitor and the inductor are all connected with the shell and the radiator.

In some embodiments, the inductor is located at a middle position of a lower end surface of a connection portion of the radiator and the housing, and the power feeding portion is located at a middle position of another surface opposite to the inductor.

In some embodiments, the housing is a hollow polygon open at both ends.

In some embodiments, the distance between the antenna portion and the housing is 0.5mm-2 mm.

In some embodiments, the insulating medium is in the shape of a closed loop.

In some embodiments, the inductance value of the inductor ranges from 1.5nH to 6.8 nH.

In some embodiments, the first capacitor has a capacitance value in a range of 0.1pF to 1 pF.

In some embodiments, the second capacitor has a capacitance value in a range of 0.1pF to 1 pF.

The utility model discloses owing to adopt above technical scheme, make it compare with prior art, have following advantage and positive effect:

the utility model provides a pair of collection diversity reception, multiplexing antenna of GPS and WIFI communication can regard as the auxiliary antenna in the antenna to use, can simultaneous working receive in the diversity, GPS communication and the three work frequency channel of WIFI communication to simplify the antenna design, reduced the usage space, the trend that adaptation antenna space size reduces.

Drawings

The above and other features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic reverse side view of the present invention;

fig. 2 is a schematic front view of the present invention;

fig. 3 is a schematic side view of the present invention;

fig. 4 is a schematic diagram of the present invention.

Description of the symbols:

11-shell

12-insulating medium

101-feeding part

102-radiator

103-first capacitance

104-inductor

105-second capacitance

Detailed Description

The invention will be described in more detail hereinafter with reference to the accompanying drawings showing embodiments of the invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the size and relative sizes of layers and regions may be exaggerated for clarity.

Referring to fig. 1-4, the utility model provides a pair of collect multiplexing antenna of diversity reception, GPS and WIFI communication sets up on a mobile terminal, collects diversity reception, GPS, three kinds of different functions of WIFI communication as an organic whole. The mobile phone terminal diversity, GPS and WIFI composite antenna comprises a shell 11 with conductive performance and an antenna part, wherein the antenna part is connected with the shell through an insulating medium. Wherein the antenna part comprises a feeding part 101, a radiator 102, an inductance 104, a first capacitance 103 and a second capacitance 105.

Specifically, the case 11 is made of a metal having an electrically conductive property, but it is needless to say that an alloy, such as stainless steel or a magnesium-aluminum alloy, may be used as a material for making the case, and the case may be made by a process such as milling or forging. The housing 11 has a polyhedron shape, and is a hollow polygonal body with two open ends, including left and right side surfaces, a bottom surface, and a front surface, although the length and shape thereof may be set according to specific situations, and is not limited herein. The radiator 102 is in a cover-shaped structure with one open end, and the open end of the radiator 102 is connected with one open end of the shell 11 through the insulating medium 12; the insulating medium 12 may be in the form of a closed ring, a sheet, a rectangular parallelepiped, or the like; the insulating medium 12 may be a polymer or the like, and is coupled to the antenna portion by injection molding or the like. The insulating medium 12 is used to divide the housing 11 and the antenna portion by a distance of about 0.5mm to 2mm, and preferably by 1.5 mm. When the utility model discloses when the application is on the mobile terminal, casing 11 and irradiator 102 link to each other, use as a mobile terminal shell's partly, can place like parts such as speaker, earphone in the irradiator 102.

In the present embodiment, referring to fig. 3, the first capacitor 103, the second capacitor 105 and the feeding portion 101 are sequentially disposed on the upper end surface of the connection portion of the radiator 102 and the housing 11, and the first capacitor 103, the second capacitor 105 and the feeding portion 101 are connected to both the housing 11 and the radiator 102; the feed part 101 is located at the center of the upper end face of the connection part of the radiator 102 and the shell 11, and the feed part 101 is also connected with a feed source and receives a feed source signal; of course, the position of the power feeding portion 101 may be adjusted appropriately to the left and right of the central position, and is not limited herein; the second capacitor 105 is positioned between the first capacitor 103 and the feeding part 101, the value range of the capacitance value of the first capacitor 103 is 0.1pF-1pF, and the optimal value is 0.5 pF; the capacitance value range of the second capacitor 105 is 0.1pF-1pF, and the optimal value is 0.5 pF. The inductor 104 is disposed on the lower end surface of the connection portion of the radiator 102 and the housing 11, and is located at the central position thereof, that is, at the central position of the other surface opposite to the power feeding portion 101; the inductor 104 is connected to both the housing 11 and the radiator 102; the inductance of inductor 104 ranged from 1.5nH to 6.8nH, and the optimum inductance L1 was 2.7 nH.

The utility model provides a pair of collection diversity reception, multiplexing antenna of GPS and WIFI communication can regard as the auxiliary antenna in the antenna to use, can simultaneous working receive in the diversity, GPS communication and the three work frequency channel of WIFI communication to simplify the antenna design, reduced the usage space, the trend that adaptation antenna space size reduces. The radiation principle of the utility model is as follows:

referring to fig. 4, the radiator 102 has a radiation resistance R3 and an equivalent capacitance C3, and thus the radiator 102 forms a resonant circuit with the inductor 104, and the inductance value of the inductor 304 is L3. The feed signal passes through the feed part 101 and then is connected with the housing 11 through the first capacitor 103, so as to form a first LC loop, the loop has an equivalent inductor L4, an equivalent capacitor C4 and the first capacitor 103, and the first capacitor 103 is connected with the equivalent inductor L4 in series. The feeding signal passes through the feeding portion 101 and then is connected to the housing 11 through the second capacitor 103 to form a second LC loop having an equivalent inductance L5 and an equivalent capacitance C5, and a second capacitor 105. The capacitor 305 is connected in series with an equivalent inductor L5.

A feed signal passes through the feeding part 301, and a three-resonance circuit is formed by L3, R3, C3, L4, C4, a capacitor 303, L5, C5 and a capacitor 305; although there is coupling between different resonant loops, the operating frequency range of the resonant circuit formed by the radiator 102 and the inductor 104 (i.e. the part consisting of L3, R3 and C3) is from 698MHz to 960MHz from the view of the main active loop, which is available for diversity reception; the working frequency range of a resonant circuit (namely a part consisting of L4, C4 and the capacitor 103) formed among the power feeding part 101, the first capacitor 103 and the shell 11 is 1.575GHz, and the resonant circuit can be used for GPS communication; the resonant circuit formed between the feeding portion 101, the second capacitor 105 and the housing 11 (i.e., the portion formed by the L5, the C5 and the capacitor 105) has an operating frequency range between 2.4GHz and 2.5GHz, and a frequency doubling range between 5.15GHz and 5.85GHz, which is suitable for WIFI communication. Consequently the utility model provides a set diversity reception, the multiplexing antenna of GPS and WIFI communication can satisfy the working frequency channel requirement of diversity reception, GPS communication and WIFI communication simultaneously.

To sum up, the utility model provides a collection diversity reception, the multiplexing antenna of GPS and WIFI communication, including casing and antenna part. The antenna part comprises a radiator, a feed part, an inductor, a first capacitor and a second capacitor, wherein the radiator is in a cover shape with one open end, the shell is in a hollow polygonal body with two open ends, and the open end of the radiator is connected with one open end of the shell through an insulating medium. The first capacitor, the second capacitor and the feed part are sequentially arranged on the upper end face of the joint of the radiator and the shell, the feed part is positioned in the middle of the upper end face, the inductor is positioned in the middle of the lower end face opposite to the feed part, and the feed part, the first capacitor, the second capacitor and the inductor are connected with the radiator and the shell. The utility model discloses can simultaneous working receive, GPS communication and the three work frequency channel of WIFI communication in the diversity to simplify the antenna design, reduced the usage space, the trend that adaptation antenna space size reduces.

It will be appreciated by those skilled in the art that the invention can be embodied in many other specific forms without departing from the spirit or scope of the invention. Although embodiments of the present invention have been described, it is to be understood that the invention is not limited to those embodiments, and that changes and modifications may be made by one skilled in the art within the spirit and scope of the invention as defined in the appended claims.

Claims

1. A diversity reception, GPS and WIFI communication integrated multiplexing antenna is arranged in a mobile terminal and is characterized by comprising a shell and an antenna part, wherein the shell has conductive performance; wherein,

2. The multiplexing antenna for diversity reception, GPS and WIFI communication according to claim 1, wherein the inductor is located at a middle position of a lower end surface of a connection portion of the radiator and the housing, and the power feeding portion is located at a middle position of another surface opposite to the inductor.

3. The diversity reception, GPS and WIFI communication integrated multiplexing antenna of claim 1 wherein said housing is a hollow polygon open at both ends.

4. The diversity reception, GPS, and WIFI communication integrated multiplexing antenna of claim 1, wherein the distance between the antenna portion and the housing is 0.5mm-2 mm.

5. The diversity reception, GPS, and WIFI communication integrated multiplexing antenna of claim 1 wherein the dielectric medium is in the shape of a closed loop.

6. The multiplexing antenna for diversity reception, GPS and WIFI communication of claim 1 wherein the inductance value of the inductor ranges from 1.5nH to 6.8 nH.

7. The multiplexing antenna for diversity reception, GPS and WIFI communication of claim 1 wherein the first capacitor has a capacitance value in the range of 0.1pF-1 pF.

8. The multiplexing antenna for diversity reception, GPS and WIFI communication of claim 1 wherein the second capacitor has a capacitance value in the range of 0.1pF-1 pF.