CN204257812U

CN204257812U - Dual-band and dual-feed antenna

Info

Publication number: CN204257812U
Application number: CN201420681395.1U
Authority: CN
Inventors: 王平; 董明奇
Original assignee: ANRAY COMMUNICATION TECHNOLOGY Co Ltd
Current assignee: ANRAY COMMUNICATION TECHNOLOGY Co Ltd
Priority date: 2014-11-11
Filing date: 2014-11-11
Publication date: 2015-04-08
Anticipated expiration: 2024-11-11

Abstract

The utility model provides a kind of dual-band and dual-feed antenna, comprise first, second antenna element in housing and housing, first antenna element comprises two groups of dipoles in coaxial cable (1), PCB substrate, wherein the shielding conductor of one group of dipole and coaxial cable (1) is electrically connected, half arm in another group dipole and the shielding conductor of coaxial cable (1) are electrically connected, and the core of second half arm and coaxial cable (1) is electrically connected; Second antenna element comprises coaxial cable (2), dipole in PCB substrate and choke, the shielding conductor of choke and coaxial cable (2) is electrically connected, the shielding conductor of half arm of this dipole and coaxial cable (2) is electrically connected, and the core of second half arm and coaxial cable (2) is electrically connected.The utility model can realize the transmitting-receiving of two-band signal, and the isolation of two-frequency signal is better, the electric performance stablity of antenna, and cost is low, easy volume production.

Description

Dual-band and dual-feed antenna

Technical field

The utility model relates to a kind of dual-band and dual-feed antenna, belongs to antcnnas manufacturing technology field.

Background technology

Along with communication and the fast development of electronic technology, antenna miscellaneous has been widely used in the terminal equipments such as smart mobile phone, navigation, wireless routing, and the pattern of antenna and specification design according to the performance of used terminal equipment mostly.Current existing antenna is mostly 2.4GHz single-band antenna or 2.4/5GHz dual-band antenna, dual-band antenna generally need arrange the isolation that the circuit devcies such as duplexer realize two kinds of frequency signals, this had both added the complexity of antenna structure, also adds additional manufacturing cost.

Utility model content

In view of the foregoing, the purpose of this utility model is to provide a kind of dual-band and dual-feed antenna, and this dual-band and dual-feed antenna can realize the transmitting-receiving of 2.4/5GHz two-band signal, without the need to additionally arranging the isolation that the circuit devcies such as duplexer can reach higher, there is cost low, the advantage of easy volume production.

For achieving the above object, the utility model is by the following technical solutions:

Dual-band and dual-feed antenna, is characterized in that, comprises first, second antenna element in housing and housing,

This first antenna element comprises two groups of dipoles in coaxial cable (1), PCB substrate, wherein the shielding conductor of one group of dipole and this coaxial cable (1) is electrically connected, half arm (63) in another group dipole is electrically connected with the shielding conductor of this coaxial cable (1), and second half arm (64) is electrically connected with the core of this coaxial cable (1);

This second antenna element comprises coaxial cable (2), dipole in PCB substrate and choke, the shielding conductor of this choke and this coaxial cable (2) is electrically connected, half arm (92) of this dipole and the shielding conductor of this coaxial cable (2) are electrically connected, and second half arm (93) is electrically connected with the core of this coaxial cable (2).

Further,

Two groups of dipoles of described first antenna element are made up of the copper foil layer radiation patch (61,62) in PCB substrate and copper foil layer radiation patch (63,64) respectively, and the equivalent length of this copper foil layer radiation patch (61,62,63,64) is 1/4 λ.

The dipole of described second antenna element is made up of the copper foil layer radiation patch (92,93) in PCB substrate, described choke is made up of the copper foil layer radiation patch (91) in PCB substrate, and the equivalent length of this copper foil layer radiation patch (92,93,91) is 1/4 λ.

The spacing of two groups of dipoles of described first antenna element is 1 λ.

The dipole of described first antenna element and the second antenna element is at center frequency point 2450MHz place same-phase feed.

Described housing is made up of upper shell and lower house, and this upper shell, lower house are connected with terminal equipment by an articulating component after assembling with first, second antenna element described.

The characteristic impedance of described coaxial cable (1,2) is 50 ohm.

The utility model has the advantage of:

Dual-band and dual-feed antenna of the present utility model, the transmitting-receiving of two-band signal can be realized, without the need to additionally arranging the isolation that the circuit devcies such as duplexer can reach higher, and the structure of antenna and electric performance stablity, be applicable to the terminal equipment of indoor polytype mobile communication system class, have that structure is simple, cost is low, the advantage of environmental protection, easily volume production.

Accompanying drawing explanation

Fig. 1 is schematic appearance of the present utility model.

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

Fig. 3 is the structural representation of two antenna elements of the present utility model.

Fig. 4 is waveform phase and the amplitude schematic diagram of two antenna elements of the present utility model.

Fig. 5 A is the standing wave pattern of the first antenna element of the present utility model.

Fig. 5 B is the standing wave pattern of the second antenna element of the present utility model.

Fig. 6 A is the directional diagram of the first antenna element of the present utility model.

Fig. 6 B is the directional diagram of the second antenna element of the present utility model.

Embodiment

Below in conjunction with drawings and Examples, the utility model is described in further detail.

Fig. 1 is schematic appearance of the present utility model, and Fig. 2 is internal structure schematic diagram of the present utility model, and Fig. 3 is the structural representation of two antenna elements of the present utility model.As shown in the figure, dual-band and dual-feed antenna disclosed in the utility model, comprises two antenna elements of housing and enclosure interior,

As shown in Figures 2 and 3, two antenna elements are respectively the first antenna element (2.4GHz antenna) and the second antenna element (5GHz antenna), wherein, first antenna element comprises coaxial cable 1, copper foil layer radiation patch 61 in PCB substrate 10, 62, 63, 64, copper foil layer radiation patch 61 and copper foil layer radiation patch 62 form dipole, copper foil layer radiation patch 61 and copper foil layer radiation patch 62 all with the shielding conductor of coaxial cable 1 (as Fig. 2, in 3 71, 72 places) be electrically connected (welding), copper foil layer radiation patch 63 and copper foil layer radiation patch 64 form dipole, shielding conductor (Fig. 2 of copper foil layer radiation patch 63 and coaxial cable 1, 73 places in 3) be electrically connected, copper foil layer radiation patch 64 is electrically connected with the core 74 of coaxial cable, the spacing of above-mentioned two groups of dipoles is 1 λ.

Second antenna element comprises the copper foil layer radiation patch 91,92,93 in coaxial cable 2, PCB substrate 10, copper foil layer radiation patch 92 and copper foil layer radiation patch 93 form dipole, and copper foil layer radiation patch 92 is electrically connected with the shielding conductor (82 places in Fig. 2,3) of coaxial cable 2; Copper foil layer radiation patch 93 is electrically connected with the core 83 of coaxial cable; Copper foil layer radiation patch 91 forms choke, the shielding conductor (81 places in Fig. 2,3) of itself and coaxial cable 2 is electrically connected, 1/4 λ short-circuit line is formed between copper foil layer radiation patch 91 and coaxial cable 2 shielding conductor, copper foil layer radiation patch 91 lower ending opening place presents input impedance infinity, thus can effectively suppress the electric current at coaxial cable 2 shielding conductor place excessive, realize the feed balance of antenna; The position of choke sets according to the maximum position of the excessive electric current of coaxial cable.

The equivalent length of above-mentioned copper foil layer radiation patch 61,62,63,64,91,92,93 is 1/4 λ, and the characteristic impedance of coaxial cable 1,2 is 50 ohm.As shown in Fig. 4 to Fig. 6 B, the dipole of two antenna elements is at center frequency point 2450MHz place same-phase feed.

As shown in Figure 1, housing can be divided into upper shell 4 and lower house 5 (being plastic cement material), upper shell 4 and lower house 5 are welded together by ultrasonic welders, the mould structure of plastic shell can be simplified and then reduce costs, also improve the structural stability of antenna simultaneously, housing is connected with terminal equipment by articulating component 3 after assembling with antenna element, can realize antenna relative termination equipment and carry out pivot pendulum, rotation.

Dual-band and dual-feed antenna of the present utility model, Dipole Arrays column radiating element is formed by covering copper in PCB substrate, the electric performance stablity of antenna can be realized, horizontal omnidirectional high-gain effect, and good isolation can be reached without the need to additional configuration duplexer, there is low cost, environmental protection, the advantages such as easy volume production.

The above know-why being preferred embodiment of the present utility model and using; for a person skilled in the art; when not deviating from spirit and scope of the present utility model; any based on apparent changes such as the equivalent transformation on technical solutions of the utility model basis, simple replacements, all belong within the utility model protection range.

Claims

1. dual-band and dual-feed antenna, is characterized in that, comprises first, second antenna element in housing and housing,

2. dual-band and dual-feed antenna as claimed in claim 1, it is characterized in that, two groups of dipoles of described first antenna element are made up of the copper foil layer radiation patch (61,62) in PCB substrate and copper foil layer radiation patch (63,64) respectively, and the equivalent length of this copper foil layer radiation patch (61,62,63,64) is 1/4 λ.

3. dual-band and dual-feed antenna as claimed in claim 2, it is characterized in that, the dipole of described second antenna element is made up of the copper foil layer radiation patch (92,93) in PCB substrate, described choke is made up of the copper foil layer radiation patch (91) in PCB substrate, and the equivalent length of this copper foil layer radiation patch (92,93,91) is 1/4 λ.

4. dual-band and dual-feed antenna as claimed in claim 3, it is characterized in that, the spacing of two groups of dipoles of described first antenna element is 1 λ.

5. dual-band and dual-feed antenna as claimed in claim 4, it is characterized in that, the dipole of described first antenna element and the second antenna element is at center frequency point 2450MHz place same-phase feed.

6. dual-band and dual-feed antenna as claimed in claim 1, it is characterized in that, described housing is made up of upper shell and lower house, and this upper shell, lower house are connected with terminal equipment by an articulating component after assembling with first, second antenna element described.

7. dual-band and dual-feed antenna as claimed in claim 1, it is characterized in that, the characteristic impedance of described coaxial cable (1,2) is 50 ohm.