CN103825092A - Second order double-earth-point LTE 700 MHz antenna - Google Patents
Second order double-earth-point LTE 700 MHz antenna Download PDFInfo
- Publication number
- CN103825092A CN103825092A CN201410072809.5A CN201410072809A CN103825092A CN 103825092 A CN103825092 A CN 103825092A CN 201410072809 A CN201410072809 A CN 201410072809A CN 103825092 A CN103825092 A CN 103825092A
- Authority
- CN
- China
- Prior art keywords
- antenna
- resonator
- earth
- short circuit
- order
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Abstract
Disclosed is a second order double-earth-point LTE 700 MHz antenna. The designed antenna has the second order characteristic in an LTE 700 MHz frequency band, and the working frequency band of the antenna is widened. The antenna is provided with two independent short circuit pins (2) for earth connection, the two short circuit pins of the antenna are placed on a rectangular resonator (4) and a bending stripline resonator (5) respectively to be used for eliminating the influence between two resonance points, and the rectangular resonator (4) and the bending stripline resonator (5) are different. By the aid of the two different resonators, the second order characteristic of the antenna is achieved through the different short circuit pins, and a low frequency resonator can achieve phase step impedance through a bending stripline microstrip line with the two ends being wide and the middle being narrow. Compared with a traditional LTE antenna, the second order double-earth-point LTE 700 MHz antenna overcomes the defects that the influence among all the resonance points in the 700 MHz low frequency band is large, the second order characteristic cannot be formed easily, and accordingly return loss in the low frequency band is overlarge, the structure of one earth point in an existing antenna is changed, two independent earth points are used for being connected to the different resonators respectively, so that the second order characteristic is formed, and return loss is lowered.
Description
?
technical field
The present invention relates to the two earth point LTE700MHz antennas of a kind of second order, belong to communication antenna technical field.
Background technology
Along with the continuous progress of scientific and technological level, the 4G communication epoch arrive comprehensively.Due to 4G communication, to have communication speed faster, and network spectrum is wider, and the more high advantage of frequency service efficiency has been subject to people's extensive favor.And antenna is as one of core component of radio communication, its performance quality directly has influence on radio communication quality.
Common 4G communication antenna mostly has wider bandwidth at present, can cover 2G, 3G, many communications bands of 4G, but its return loss is bigger than normal, when design, often select design standard rather than the conventional-10dB of be less than or equal to-6dB of S11 parameter as antenna, its reason is wayward in the bandwidth of 700MHz low frequency part, between two resonance points, ripple is higher, be greater than-10dB of S11.If selection-6dB is as standard, according to formula
can obtain, the power of reflection has reached 25% of input general power, can cause resource serious waste.Therefore, how to improve the performance of existing 4G antenna, reduce return loss and become the matter of utmost importance that we will solve.
The reason that conventional LTE antenna can not reduce return loss is, between the resonance frequency that different resonators produces, can mutually exert an influence, cause corrugated portion higher, the phase mutual interference therefore how solving between different frequency also becomes the key technology that reduces return loss.
Summary of the invention
The technical problem to be solved in the present invention is, changes the excessive problem of existing LTE 4G communication antenna 700MHz frequency range partial echo loss, makes the be less than-10dB of S11 parameter of antenna, and carrys out Bandwidth by realizing second-order characteristics.
The technical solution adopted for the present invention to solve the technical problems is: the two earth point LTE700MHz antennas of a kind of second order of the present invention have two independently short circuit pin ground connection, two short circuit pins lay respectively on two different resonators, for eliminating two impacts between resonator; Two different resonators are realized the second-order characteristics of antenna by different short circuit pins; Low-frequency resonator realizes Stepped Impedance by wide centre, the two ends banded microstrip line of narrow bending.
The present invention only has the structure of a short circuit pin ground connection to improve to LTE antenna in the past, adopts two separate earth points, is placed in respectively on two different resonators.Wherein the branch road at two resonator places does not have direct Metal Contact, and bending stripline resonator is placed between two earth points, has improved the isolation between two earth points.Utilize two features that earth point isolation is high, reduce influencing each other of 710MHz and two resonators of 732MHz, reduce the ripple between two resonance points, reach the object that reduces return loss, realized second-order characteristics simultaneously.
Two resonators of antenna of the present invention are antenna rectangle resonator and bending stripline resonator; Two different resonators are operated in respectively 710MHz and 732MHz, realize the second-order characteristics of antenna by two separate short circuit pins, make antenna be less than-10dB of S11 parameter between 702MHz-746MHz frequency band.
Low-frequency resonator in antenna of the present invention adopts two ends wide, and middle narrow bending strip lines configuration is realized Stepped Impedance, changes harmonic wave position.
The advantage that the present invention compared with prior art had is, the present invention, compared with traditional LTE antenna, has overcome between each resonance point of 700MHz low-frequency range impact larger, is difficult to form second-order characteristics, causes the excessive shortcoming of low-frequency range return loss.Change the structure of an earth point of existing antenna, use two independently earth point be connected respectively on different resonators, form second-order characteristics, reduce return loss.
accompanying drawing explanation
Fig. 1 is the structural front view of the two earth point LTE700MHz antennas of second order of the present invention;
Fig. 2 is the structure left view of the two earth point LTE700MHz antennas of second order of the present invention;
Fig. 3 is the S11 Parameter Map of the two earth point LTE700MHz antennas of second order;
Fig. 4 is the two earth point structure diagrams of second order of the present invention;
Fig. 5 is traditional structure sketch;
Fig. 6 is the two earth point LTE700MHz antenna assumption diagrams of embodiment of the present invention second order;
Picture in picture number: 1 feed port that is antenna; 2 is the short circuit pin of antenna; 3 is the above ground portion of antenna; 4 is antenna rectangle resonator; 5 is the bending stripline resonator of antenna; 6 is the dielectric-slab (thickness 1.6mm) of antenna.
Embodiment
The specific embodiment of the present invention as shown in Figure 6.
As shown in Figure 6,1 feed port that is antenna, the 2 short circuit pins that are antenna, the 3 ground plane parts that are antenna, 4 is antenna rectangle resonator, the 5 bending stripline resonators that are antenna, 6 dielectric-slabs (thickness is 1.6mm) that are antenna.
As shown in Figure 6, the two earth point LTE700MHz antenna each several parts of embodiment of the present invention second order are of a size of: the width W of dielectric-slab
s=20mm; The length L of dielectric-slab
s=66mm; Metal width is penetrated the width W of paster
p=19mm; Metal width is penetrated the length L of paster
p=60.1mm; The width W 1=17mm of rectangle resonator 4; The length L 1=13mm of the transmission branch being connected with rectangle resonator; The width W 2=15mm of distributing point place branch road; Feed leg is to the distance L 2=3mm of bending resonator 5 branch roads; Length and the width of corresponding bending dress resonator each several part are: L3=2.8mm; L4=10.4mm; L5=9mm; W3=7.6mm; W4=0.6mm; W5=1.5mm; The radius R s=0.3mm of short dot cylinder (2); The radius R p=0.6mm of distributing point cylinder (1).
As shown in Figure 3, the present embodiment antenna is operated in the frequency range of 704MHz-746MHz, and first resonance frequency 710MHz is produced by the bending stripline resonator 5 of antenna, and second resonance frequency 732MHz produced by antenna rectangle resonator 4.By finding the observation between two resonance points, between two somes the S11 parameter of corrugated portion not because coupling rise to-more than 10dB, and there is obvious second-order characteristics
As shown in Figure 5, two of traditional structure resonators use same short circuit pin ground connection; In Fig. 4, structure of the present invention is used two short circuit pins ground connection respectively, by characteristic separate between short circuit pin, the isolation of two resonators is also improved, and realizes second-order characteristics.
The two earth point LTE700MHz frequency range communication antennas of second order of this example are compared with traditional LTE antenna, adopt two independent grounding dot structures, and be placed in respectively on different resonators, improve the isolation between resonator, realize the second-order characteristics in working frequency range, reduced the return loss of antenna simultaneously.
Claims (3)
1. the two earth point LTE700MHz antennas of second order, is characterized in that, described antenna has two independently short circuit pin ground connection, and two short circuit pins lay respectively on two different resonators, for eliminating two impacts between resonator; Two different resonators are realized the second-order characteristics of antenna by different short circuit pins; Low-frequency resonator realizes Stepped Impedance by wide centre, the two ends banded microstrip line of narrow bending.
2. the two earth point LTE700MHz antennas of a kind of second order according to claim 1, is characterized in that, described two resonators are antenna rectangle resonator and bending stripline resonator; Two different resonators are operated in respectively 710MHz and 732MHz, realize the second-order characteristics of antenna by two separate short circuit pins, make antenna be less than-10dB of S11 parameter between 702MHz-746MHz frequency band.
3. the two earth point LTE700MHz antennas of a kind of second order according to claim 1, is characterized in that, described two short circuit pin ground connection independently without direct Metal Contact, have been improved the isolation of two earth points between the branch road at two earth point places.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072809.5A CN103825092A (en) | 2014-04-02 | 2014-04-02 | Second order double-earth-point LTE 700 MHz antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410072809.5A CN103825092A (en) | 2014-04-02 | 2014-04-02 | Second order double-earth-point LTE 700 MHz antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103825092A true CN103825092A (en) | 2014-05-28 |
Family
ID=50760025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410072809.5A Pending CN103825092A (en) | 2014-04-02 | 2014-04-02 | Second order double-earth-point LTE 700 MHz antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103825092A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060227054A1 (en) * | 2005-04-07 | 2006-10-12 | Nokia Corporation | Antenna |
| EP2019448A1 (en) * | 2007-06-29 | 2009-01-28 | Laird Technologies AB | Antenna device |
| CN102709671A (en) * | 2012-01-04 | 2012-10-03 | 瑞声声学科技(深圳)有限公司 | Multiband antenna, wireless communicator and wireless communication system |
-
2014
- 2014-04-02 CN CN201410072809.5A patent/CN103825092A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060227054A1 (en) * | 2005-04-07 | 2006-10-12 | Nokia Corporation | Antenna |
| EP2019448A1 (en) * | 2007-06-29 | 2009-01-28 | Laird Technologies AB | Antenna device |
| CN102709671A (en) * | 2012-01-04 | 2012-10-03 | 瑞声声学科技(深圳)有限公司 | Multiband antenna, wireless communicator and wireless communication system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10847902B2 (en) | Enhanced phase shifter circuit to reduce RF cables | |
| US20210336351A1 (en) | Dual-Polarized Duplex Antenna and Dual-Band Base Station Antenna Array Composed Thereof | |
| EP3790110B1 (en) | Antenna and mobile terminal | |
| US7800543B2 (en) | Feed-point tuned wide band antenna | |
| EP2858171A1 (en) | Printed circuit board antenna and terminal | |
| EP3300170B1 (en) | Antenna and user equipment | |
| CN103700910A (en) | Complementary opening resonance ring and defect ground structure half module substrate integrated waveguide dual-band filter | |
| CN108448234B (en) | Three-frequency-band MIMO terminal antenna based on composite left-right-hand transmission line structure | |
| CN113675607B (en) | Planar multi-port high-isolation broadband triplexer integrated antenna | |
| CN210430080U (en) | Broadband dual-polarization filtering base station antenna unit, base station antenna array and communication equipment | |
| CN103943960A (en) | Novel multi-notch ultra-wideband antenna with stop-band units simultaneously loaded to feeder and patch | |
| CN104037477A (en) | Multi-band tunable microstrip band-pass filter | |
| US7742001B2 (en) | Two-tier wide band antenna | |
| CN105680175A (en) | Compact type multi-band MIMO mobile phone antenna | |
| CN104882677A (en) | Difference slit MIMO (Multiple Input Multiple Output) antenna with high common mode rejection ratio | |
| CN104953288A (en) | Small UWB (ultra-wideband) antenna with band-notch characteristics in multiple frequency bands | |
| CN104681972B (en) | There is the groove loading ultra-wideband monopole antenna of stabilising direction figure and good Out-of-band rejection ability simultaneously | |
| CN103560325A (en) | Broadband Quari-Yagi antenna applied to multi-band frequency wireless communication system | |
| CN102664295B (en) | Ultra-wideband micro-strip bandpass filter | |
| CN111541018A (en) | High-gain steep filtering fusion duplex integrated antenna | |
| TWI464960B (en) | Mobile communication device and monopole slot antenna therein | |
| CN112366457A (en) | Miniaturized ultra-wideband monopole antenna with double-trapped-wave characteristics | |
| CN103219593A (en) | Planar ultra wide band filtering antenna adopting short circuit lead | |
| CN105006653A (en) | Tri-band antenna based on CSRR and LHTL | |
| CN103825092A (en) | Second order double-earth-point LTE 700 MHz antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140528 |