CN2899141Y

CN2899141Y - planar antenna

Info

Publication number: CN2899141Y
Application number: CNU2006200066599U
Authority: CN
Inventors: 柯玉荣
Original assignee: Individual
Current assignee: Individual
Priority date: 2006-03-28
Filing date: 2006-03-28
Publication date: 2007-05-09
Anticipated expiration: 2016-03-28

Abstract

A planar antenna includes a planar antenna body, a planar integrated circuit and a cable. The planar antenna body is a coplanar guided wave antenna, the excitation path is changed by utilizing the positive metal geometric coating and the metal grounding geometric coating on the back surface to adjust the operating frequency, the flat integrated circuit is welded on the planar antenna body and can distribute, shape and filter signals, and the two tail end parts of the cable are connected with the metal grounding geometric coating so as to form a part of the antenna, thereby achieving the purposes of adjusting the input impedance of the antenna and increasing the radiation gain of the planar antenna body.

Description

Flat plane antenna

[technical field]

The utility model relates to a kind of antenna, particularly relates to a kind of flat plane antenna.

[background technology]

Movable video-audio, radio are equipped with and more and more variation of wireless network now, for example digital radio TV, broadcast receiver, satellite navigation and wireless network ... or the like all utilize wireless transmission, and the running of these communication systems, all must be responsible for the transmission and the reception of signal by antenna, therefore antenna is most important parts in the radio installation, usually being equipped with flexible whip type antenna at present uses for broadcast receiver, this antenna is impaired because of the external force effect easily, and can cause loose contact after the corrosion, cause the quality of signal low.Some automobile can be equipped with audio-video system at present, and common meeting is in conjunction with mobile digital TV and satellite navigation, and the antenna that uses uses the ceiling type antenna usually, and this kind antenna has wind to cut sound and stolen easily easily, and the user often denounces.

In addition, above-mentioned these antenna, as Fig. 1, one antenna 1 is connected with a coaxial cable 2, normally utilize a set of joints 3 to realize, no matter this joint 3 is BNC, N-TYPE or T-TYPE or the like, its structure all is that cable 2 ends are divested one section crust 201, and than a central insulation layer 202 of lacking a bit, making wholeheartedly, stamen 203 and coating layer 204 expose predetermined length, then this heart stamen 203 and coating layer 204 again with joint 3 (normally male joint) socket, electrically connect by joint 3 attached fixing the reaching of the socket that replaces the spare parts, this coaxial cable of this connection mode Chang Yinwei 2 is oversize to cause the received signal loss, and this coaxial cable 2 is except having signal transfer functions, does not all have for the gain of antenna or the coupling of impedance and benefits.

[utility model content]

The purpose of this utility model is to provide that a kind of volume is little, efficient is high, can effectively utilize cable to become an antenna part, with the flat plane antenna that improves antenna gain and make impedance matching realize easily

Flat plane antenna of the present utility model comprises a flat plane antenna body, a weldering and is located at dull and stereotyped integrated circuit and on this flat plane antenna body and is connected in cable on this flat plane antenna body.This flat plane antenna body is a copline guided wave antenna, have one positive and one with the back side of this opposing setting in front, this front is provided with how much coatings of a cathode metal, this back side is provided with metal ground connection geometry coatings.This flat board integrated circuit can be with signal allocation and shaping filter or amplification.This cable has the coating layer of being located at terminal part and being connected with how much coatings of this metal ground connection, can reach the input impedance of adjusting antenna and the radiation gain that increases this flat plane antenna body so as to a part that becomes antenna.

Whereby, utilize how much coatings of this cathode metal, how much coatings of metal ground connection are set on this flat plane antenna body, can produce the little effect of volume, and this cable can become an antenna part, so as to improving antenna gain and making impedance matching reach easily.

[description of drawings]

Fig. 1 is a profile of existing antenna, and the structure of existing cable and joint is described;

Fig. 2 is the front view of the utility model one preferred embodiment, and the distribution of how much coatings of a cathode metal and a dull and stereotyped integrated circuit is described;

Fig. 3 is the dorsal view of the above-mentioned preferred embodiment of the utility model, and the distribution of how much coatings of a metal ground connection and a cable is described;

Fig. 4 is a calcspar of the above-mentioned preferred embodiment of the utility model, and dull and stereotyped integrated circuit is described;

Fig. 5 is the combination section of the above-mentioned preferred embodiment of the utility model, and the structure of cable is described;

Fig. 6 is the floor map of the above-mentioned preferred embodiment of the utility model, and the equivalent structure of antenna is described.

[embodiment]

Below by most preferred embodiment and accompanying drawing flat plane antenna of the present utility model is elaborated.

As shown in Figures 2 and 3, the preferred embodiment of the utility model flat plane antenna comprises a flat plane antenna body 10, a weldering and is located at dull and stereotyped integrated circuit 20 and on this flat plane antenna body 10 and is connected in cable 30 on this flat plane antenna body 10.

This flat plane antenna body 10 is a copline guided wave antenna, have one positive 13 and one and the back side 14 of these front 13 opposing settings, this front 13 is provided with how much coatings 11 of a cathode metal, by the aerial radiation principle, electromagnetic generation, basically be the change procedure in electric field and magnetic field, energy is transmitted in the space in the mode of ripple, the geometry external form of how much coatings 11 of this cathode metal has determined the space that electric field may vibrate, and this back side 14 is provided with how much coatings 12 of a metal ground connection, how much coatings 11 of how much coatings 12 of this metal ground connection and this cathode metal become a co-plane waveguide antenna, are used co-plane waveguide feed-in mode and can reach following three purposes: adjust the input impedance of antenna, the radiation gain that inspires second resonance frequency and increase positive surface antenna.

This flat board integrated circuit 20 is to be fixedly arranged on this front 13 with welding or with mode of printing, and the position is in how much coating 11 1 sides of this cathode metal, and as shown in Figure 4, it has a distributor circuit 21, a wideband filter circuit 22 and an impedance matching circuit 23, can be with signal allocation, shaping filter and matched impedance or amplification.

As shown in Figure 5, this cable 30 has a weldering and is located at crust 32, that heart stamen 31, on how much coatings 12 of this metal ground connection is packaged in these heart stamen 31 outsides and is arranged on a coating 33 and a copper sheathing 34 between this crust 32 and this core stamen 31.One end of this crust 32 is to divest predetermined length with respect to this coating 33, again section 331 is instead overlapped to produce one in anti-crust 32 surfaces that are placed in of these coating 33 opposing ends portions, relend these copper sheathing 34 covers and be fixed in this anti-cover section 331 outsides, and this copper sheathing 34 is welded on how much coatings 12 of this metal ground connection again.Moreover, apart from these copper sheathing 34 predetermined lengths, crust 32 being divested predetermined space according to frequency of operation and the impedance data that records, sheathed again one second copper sheathing 35, this second copper sheathing 35 also are welded in how much coating 12 book offices of this metal ground connection and are the side direction outlet.

According to said structure, as shown in Figure 6, how much coatings 11 of this cathode metal become an antenna positive pole 40, how much coatings 12 of this metal ground connection become an antenna negative pole 50, and cable between this copper sheathing 34 and this second copper sheathing 35 and antenna negative pole 50 generation interelectrode capacitances in parallel, have the coupling characteristic, and a part that becomes antenna can be coupled to this antenna negative pole 50 with the signal that receives.

Whereby, antenna negative pole 50 and the cable between this copper sheathing 34 and this second copper sheathing 35 that the antenna anodal 40 that how much coatings 11 of this cathode metal become and how much coatings 12 of this metal ground connection become can reach radiation gain that increases this flat plane antenna body 10 and the input impedance of adjusting antenna, this antenna is the flat plane antenna that designs for theoretical foundation with the co-plane waveguide antenna, the frequency of operation of this antenna and spendable frequency band, the radiating surface that can borrow how much coatings 11 of this cathode metal and how much coatings of this metal ground connection 12 to produce changes the frequency of operation that excitation path is adjusted antenna, to reach the frequency of estimating on the Antenna Design, the purpose that can realize controlling and dwindling antenna.

Moreover, as shown in Figure 3, under the prerequisite that does not increase antenna size, how much coating 12 book offices of this metal ground connection can be established most plane slotted eyes 121, borrow the geometry of how much coatings 12 of this metal ground connection, can reach and reduce initial frequency and the effect of promoting the frequency range characteristic, this plane slotted eye 121 can be considered as the structure part of antenna, and its position of opening size is similar with dipole antenna, is easy to generate the resonance of half-wavelength.

Claims

1. A planar antenna, comprising a planar antenna body, a panel integrated circuit arranged on the planar antenna body for preference distribution and shaping filtering and a cable connected to the planar antenna body, characterized in that :

The planar antenna body is a coplanar waveguide antenna, having a front surface and a back surface opposite to the front surface, the front surface is provided with a positive metal geometric coating, and the back is provided with a metal ground geometric coating;

The panel integrated circuit is fixed on the front side of the planar antenna body, located on one side of the positive metal geometric coating, its input end is connected to the cable, and its output end is connected to the front side of the planar antenna body;

The cable has a coating at the end and connected to the metal ground geometric coating, thereby becoming part of the antenna.

2. The planar antenna according to claim 1, wherein the flat integrated circuit includes a distribution circuit, a broadband filter circuit and an impedance matching circuit connected in series, wherein the input end of the distribution circuit is connected to the cable The covering layer of the wire is connected, and the output end of the impedance matching circuit is connected to the front surface of the planar antenna body.

3. The planar antenna according to claim 1 or 2, characterized in that: the cable also has a core welded on the metal ground geometric coating, a sheath wrapped around the core, a The covering layer and a copper sleeve arranged between the outer skin and the core core, one end of the outer skin is peeled off to a predetermined length relative to the covering layer, and then the opposite end of the coating layer is reversed on the surface of the outer skin to Generate a reverse sleeve section, the copper sleeve is fixed on the outside of the reverse sleeve section, and the copper sleeve is welded and fixed on the metal grounding geometric coating, and the distance from the copper sleeve is a predetermined length, according to the operating frequency and the measured impedance data The sheath is peeled off at predetermined intervals, and then a second copper sleeve is sheathed, and the second copper sleeve is also welded and fixed on the metal grounding geometric coating, and is a side outlet.

4. The planar antenna according to claim 1 or 2, characterized in that: the metal ground geometric coating of the planar antenna body is provided with a plurality of planar slots.