CN104409841B - A kind of wide-band slot antenna - Google Patents
A kind of wide-band slot antenna Download PDFInfo
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- CN104409841B CN104409841B CN201410698895.0A CN201410698895A CN104409841B CN 104409841 B CN104409841 B CN 104409841B CN 201410698895 A CN201410698895 A CN 201410698895A CN 104409841 B CN104409841 B CN 104409841B
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Abstract
The invention discloses a kind of wide-band slot antenna, the antenna includes：Plate-like dielectric substrate, the ribbon feed element of upper surface of base plate metal foil formation, the ground that base lower surface metal foil is formed and the radiating element of antenna for being cracked in ground and being formed, wherein, radiating element of antenna includes an anti-c-type gap and at least one the first vertical sub- gap inside anti-c-type gap.By the present invention in that designing the broad-band antenna that a 10dB return losses scope is 1.5GHz to 4.8GHz superior performances with the sub- gap of Stepped Impedance and 1/2nd wavelength slots, five modes of resonance can be produced so as to expand the bandwidth of operation of antenna, it is adaptable to broadband connections and multimode communication field.
Description
Technical field
The present invention relates to the antenna technical field of radio mobile communication, more particularly to a kind of wide-band slot antenna.
Background technology
In recent years, wireless communication technology is developed rapidly, and people increasingly increase the demand of radio communication service, many wireless
Terminal, such as mobile phone, panel computer, be intended to during design can compatible various different communication standards, such as 2G, 3G, 4G,
Wifi etc., therefore the antenna for being responsible for radiating with receiving signal requires the ability to work for possessing multiband or wide-band, multiband
Comparative maturity is studied at present, but wide-band still has very big development space.
Slot antenna, relatively conventional is Waveguide slot antenna and microstrip slot antenna, because with coplanar structure volume
Small lightweight and be easy to the good nature integrated with other components, microstrip slot antenna is typically used to intelligent mobile terminal
On.And current slot antenna still faces the narrow problem of working frequency range, therefore the slot antenna of a wide-band of design becomes outstanding
For important.
The wide-band slot antenna that data shows, the structure chart of the wide-band slot antenna is as shown in figure 1, specifically refer to " specially
Sharp application number：200880000579.4, patent name：Wide-band slot antenna, patentee：Villous themeda open country is great ".Fig. 1 is shown this
A kind of structure of wide-band slot antenna that patent is proposed, the wide-band slot antenna that patent is proposed is main by 1/2nd wavelength seam
Gap and feed structure are constituted, and the patent antenna has bandwidth of operation wider, can cover whole ultra wideband frequency (3.1GHz~
10.6GHz), the frequency range of 3GHz but is below not in the Antenna Operation scope, if therefore using a low-frequency range of the Patent design
Antenna there is more uncertainty.
The slot antenna that data shows, the structure chart of the slot antenna is as shown in Fig. 2 specifically refer to " number of patent application：
200810086973.6, patent name：Slot antenna, patentee：A golden Gui, golden Britain and Japan, Zheng Changyuan ".Fig. 2 is shown this
A kind of structure of slot antenna that patent is proposed, slot antenna that the patent is proposed it is main by ribbon feed element, with
And antenna element (being formed by two sub- gaps that connection is formed on the ground of substrate) is constituted, its major advantage is antenna
The area of occupancy is small, but working frequency range is narrower, it is impossible to meet many communication standard work.
The content of the invention
Shortcoming and deficiency it is an object of the invention to overcome prior art, it is proposed that a kind of wide-band slot antenna.The width
With slot antenna by the improvement to conventional microstrip slot antenna, uniform impedance gap is changed into Stepped Impedance gap, realized
Control to antenna resonance pattern, on this basis, by introducing a plurality of discrete gap, has been successfully introduced into an extra resonance
Pattern, has expanded the bandwidth of operation of antenna.
The purpose of the present invention is achieved through the following technical solutions：
A kind of wide-band slot antenna, the wide-band slot antenna includes：
Ribbon feed element 110, substrate 100 that plate-like dielectric substrate 100, the upper surface metal foil of substrate 100 are formed
The ground 120 of lower surface metal paper tinsel formation and the radiating element of antenna 130 for cracking and being formed in ground 120,
Wherein, radiating element of antenna 130 include an anti-c-type gap and at least one be located inside anti-c-type gap the
One vertical sub- gap 136.
Preferably, the composition in the anti-c-type gap includes the first sub- gap 131, the second sub- gap 132, the 3rd sub- gap
133rd, the 4th sub- gap 134, the 5th sub- gap 135,
Wherein, the first sub- gap 131, its first end be formed in ground edge, its second end be formed in ground inside with
The first end in the second sub- gap 132 connects into an angle of 90 degrees；
5th sub- gap 135, its first end is formed in the edge on ground, and its second end is formed in inside and the 4th son on ground
The first end in gap 134 connects into an angle of 90 degrees；
3rd sub- gap 133, the second end that its first end is formed in inside and the second sub- gap 132 on ground is in line company
Connect, the inside that its second end is formed in ground is in line with second end in the 4th sub- gap 134 and is connected.
Preferably, the described first sub- gap 131 and identical, the second sub- gap 132 in the 5th sub- gap 135 and the 4th sub- gap
134 is identical so that anti-c-type gap constitutes structure symmetrical above and below.
Preferably, the described first sub- gap 131, the second sub- gap 132, the 3rd sub- gap 133 are different, form step
The sub- gap of impedance, realizes the control to the mode of resonance of the wide-band slot antenna.
Preferably, it is also perpendicular including the second vertical sub- gap the 137, the 3rd inside the anti-c-type gap of the wide-band slot antenna
Straight sub- gap 138, and the vertical vertical sub- gap 138 in sub- gap the 137, the 3rd in the described first vertical sub- gap 136, second is mutual
It is arranged in parallel.
Preferably, the vertical vertical sub- gap 138 in sub- gap 137 and the 3rd in the described first vertical sub- gap 136, second is work
Make in the gap of 1/2nd wavelength.
Preferably, the composition of the ribbon feed element 110 includes that the first ribbon feeds subelement 111 and Article 2
Banding feeds subelement 112,
Wherein, the Article 2 banding feed subelement 112 is vertical with the lower edge of the substrate 100, and Article 2
The first end of banding feed subelement 112 is arranged on the lower edge of substrate 100, and the of Article 2 banding feed subelement 112
Two ends are connected with the first end of the first ribbon feed subelement 111；
111 one-tenth J degree obtuse angles of the Article 2 banding feed subelement 112 and first ribbon feed subelement.
Preferably, the first end of the first ribbon feed subelement 111 is gradually to the strip width at its second end
Broaden.
Preferably, the Article 2 banding feed subelement 112 feeds 111 one-tenth of subelement 135 with first ribbon
Degree obtuse angle.
Preferably, the port of the ribbon feed element 110 is 50 ohm of impedance matching.
The present invention has the following advantages and effect relative to prior art：
1st, compared with conventional uniform impedance gap, the present invention is using Stepped Impedance gap, it is possible to achieve humorous to antenna multiple
The control of pattern of shaking.
2nd, increase by one group of 1/2nd wavelength slot inside anti-c-type gap, adds additional a mode of resonance, expand
The bandwidth of operation of antenna.
3rd, Antenna Construction Design disclosed by the invention is simple, and small volume, low cost goes for plurality of communication systems.
Brief description of the drawings
Fig. 1 is the structural representation of wide-band slot antenna in the prior art；
Fig. 2 is the structural representation of slot antenna in the prior art；
Fig. 3 is a kind of vertical section sectional view of wide-band slot antenna of proposition in the present invention；
Fig. 4 is a kind of structural representation of wide-band slot antenna of proposition in the present invention；
Fig. 5 is a kind of simulation result schematic diagram of wide-band slot antenna of proposition in the present invention；
In figure, reference is：100- substrates, 110- ribbon feed elements, the ribbons of 111- first feed subelement,
112- Article 2 banding feeds subelement, 120- ground, 130- radiating element of antenna, the sub- gaps of 131- first, the son seams of 132- second
Gap, the sub- gaps of 133- the 3rd, the sub- gaps of 134- the 4th, the sub- gaps of 135- the 5th, the vertical sub- gaps of 136- first, 137- second is erected
Straight sub- gap, the vertical sub- gaps of 138- the 3rd.
Specific embodiment
To make the objects, technical solutions and advantages of the present invention clearer, clear and definite, develop simultaneously embodiment pair referring to the drawings
The present invention is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and without
It is of the invention in limiting.
Embodiment
The vertical section sectional view and structural representation of a kind of width slit antenna that the present embodiment is proposed are respectively such as Fig. 3 and Tu
Shown in 4, the wide-band slot antenna integral manufacturing is scribed, laser scoring, circuit on the medium substrate of double-sided copper-clad using machinery
The technologies such as plate corrosion can easily make.A kind of core content of width slit antenna is to use rank disclosed in the present embodiment
Jump impedance gap and 1/2nd wavelength slots design the broad-band antenna of a superior performance.
It is 4.2 that a kind of width slit antenna disclosed in the present embodiment is produced on dielectric constant in the manner of a printed circuit board,
Thickness for 1.5mm polytetrafluoroethylene (PTFE) double-sided copper-clad micro-strip plate on, structure as shown in Figure 3 and Figure 4, gap disclosed in the embodiment
Antenna is the frequency bandwidth of 1.5GHz to 4.8GHz in 10dB reflection losses scope, and overall dimensions are 66mm × 32mm.
The wide-band slot antenna that the present embodiment is proposed includes：
Ribbon feed element 110, substrate 100 that plate-like dielectric substrate 100, the upper surface metal foil of substrate 100 are formed
The ground 120 of lower surface metal paper tinsel formation and the radiating element of antenna 130 for cracking and being formed in ground 120, wherein, aerial radiation
Element 130 includes an anti-c-type gap and at least one the first vertical sub- gap 136 inside anti-c-type gap.
In the present embodiment, the second vertical sub- gap the 137, the 3rd is also included inside the anti-c-type gap of wide-band slot antenna
Vertical sub- gap 138, and the vertical vertical sub- gap 138 in sub- gap the 137, the 3rd in the first vertical sub- gap 136, second is mutually flat
Row is set, and specifically puts as shown in Figure 4.
The composition in anti-c-type gap includes the first sub- gap 131, the second sub- gap 132, the son seam of the 3rd sub- gap the 133, the 4th
Gap 134, the 5th sub- gap 135, wherein, the first sub- gap 131, its first end is formed in the edge on ground, and its second end is formed
Connect into an angle of 90 degrees with the first end in the second sub- gap 132 in the inside on ground；5th sub- gap 135, its first end is formed in ground
Edge, its second end be formed in ground inside connect into an angle of 90 degrees with the first end in the 4th sub- gap 134；3rd sub- gap
133, the inside that its first end is formed in ground is in line with second end in the second sub- gap 132 and is connected, and its second end is formed in ground
Inside be in line with second end in the 4th sub- gap 134 and be connected.
First sub- gap 131 is 135 identical with the 5th sub- gap, the second sub- gap 132 is identical with the 4th sub- gap 134, makes
Obtain anti-c-type gap and constitute structure symmetrical above and below.First sub- gap 131, the second sub- gap 132, the mutual not phase in the 3rd sub- gap 133
Together, the sub- gap of Stepped Impedance is formed, the control to the mode of resonance of the wide-band slot antenna is realized.
There are 3 points of explanations that require emphasis：The one end in the first, the first sub- gap 131 and the 5th sub- gap 135 is formed in ground
End edge at, its other end be formed in inside and the second sub- gap 132 on ground and the wherein one end in the 4th sub- gap 134 into
An angle of 90 degrees connects；The second, the first sub- gap 131 and the size of the 5th sub- gap 135 are identical, and the second sub- gap 132 and the 4th is sub
The size of gap 134 is identical, and the anti-c-type gap of composition is symmetrical above and below；3rd, the vertical sub- gap in the first vertical sub- gap 136, second
137th, the 3rd vertical vertical laid parallel in sub- gap 138 is inside anti-c-type gap, particular location for example with gap 133 apart from etc.
Determined by simulation optimization.In order to reach more preferable impedance matching, the first vertical sub- gap 136, second sub- gap 137, the vertically
The length and width in three vertical sub- gaps 138 can have fine difference.
The composition of ribbon feed element 110 includes that the first ribbon feeds subelement 111 and Article 2 banding feed
Unit 112, it is used for from external reception electric current, and performs coupling with so that the antenna element unit for being arranged on the inside on ground is produced
Radiation.
Wherein, Article 2 banding feed subelement 112 is vertical with the lower edge of substrate 100, and Article 2 banding feeds
The first end of subelement 112 is arranged on the lower edge of substrate 100, the second end of Article 2 banding feed subelement 112 and the
The first end connection of one ribbon feed subelement 111.
Wherein, the first end of the first ribbon feed subelement 111 gradually broadens to the strip width at its second end,
The part is bent and is progressively increased, and this is in order to the vertical sub- gap the 137, the 3rd in the first vertical sub- gap 136, second
The vertical more preferable couple feed in sub- gap 138 and preferably matching is reached in whole frequency range.
In the present embodiment, Article 2 banding feed subelement 112 feeds 111 one-tenth of subelement with first ribbon
135 degree of obtuse angles, the port of ribbon feed element 110 is 50 ohm of impedance matching.
The working method of whole wide-band slot antenna is that electromagnetic signal is input into from the port of ribbon feed element 110, coupling
The radiating element of antenna for closing the formation of each gap radiate, and the mode for receiving signal is then opposite.
Fig. 5 shows the scattering parameter simulation result of the present embodiment middle width strip slot antenna, and transverse axis is represented in the present embodiment
The signal frequency of wide-band slot antenna, the longitudinal axis represents return loss (S11) amplitude.In the wide-band slot antenna of the present embodiment
In signal emission process, the Partial Power of signal is reflected back toward signal source, and the power for being reflected turns into reflection power.S11Represent logical
The relation crossed between the input power of signal and the reflection power of signal of the present embodiment middle width strip slot antenna, its corresponding number
Mathematic(al) function is as follows：Reflection power/incident power==20*log | S11|。
Wide-band slot antenna 10dB return losses scope is 1.5GHz to 4.8GHz, and relative bandwidth has reached 105%, covered
GPS (1.575-GHz), LTE (1.710-2.690GHz), UMTS (1.920-2.170GHz), WLAN (2.4-GHz) have been covered,
The frequency ranges such as WiMAX (2.5/3.5-GHz), UWB (3.1-4.8GHz, low-frequency range), are extremely applicable to broadband connections or multi-standard is logical
Letter field.Can also be learnt from the figure, the slot antenna produce the principle in broadband be the inherent probably 1.5GHz of band, 2GHz, 3GHz,
Five modes of resonance are generated at 3.8GHz, 4.6GHz frequency, wherein first four are produced by anti-c-type gap, last is by anti-C
One group of 1/2nd wavelength slot inside type gap is produced, and five modes of resonance have obtained good matching, therefore form
The broadband character of antenna, it is adaptable to broadband connections or multimode communication field.
Above-described embodiment is the present invention preferably implementation method, but embodiments of the present invention are not by above-described embodiment
Limitation, it is other it is any without departing from Spirit Essence of the invention and the change, modification, replacement made under principle, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (9)
1. a kind of wide-band slot antenna, it is characterised in that the wide-band slot antenna includes：
Ribbon feed element (110), substrate that plate-like dielectric substrate (100), substrate (100) upper surface metal foil are formed
(100) ground (120) of lower surface metal paper tinsel formation and the radiating element of antenna (130) for cracking and being formed in ground (120),
Wherein, radiating element of antenna (130) is located at first inside anti-c-type gap including an anti-c-type gap and at least one
Vertical sub- gap (136),
The composition in the anti-c-type gap includes the first sub- gap (131), the second sub- gap (132), the 3rd sub- gap (133), the
Four sub- gaps (134), the 5th sub- gap (135),
Wherein, the first sub- gap (131), its first end is formed in the edge on ground, and its second end is formed in the inside and the on ground
The first end of two sub- gaps (132) connects into an angle of 90 degrees；
5th sub- gap (135), its first end is formed in the edge on ground, and its second end is formed in inside and the 4th son seam on ground
The first end of gap (134) connects into an angle of 90 degrees；
3rd sub- gap (133), the second end that its first end is formed in inside and the second sub- gap (132) on ground is in line company
Connect, the inside that its second end is formed in ground is in line with the second end of the 4th sub- gap (134) and is connected.
2. a kind of wide-band slot antenna according to claim 1, it is characterised in that the first sub- gap (131) and the
Five sub- gaps (135) are identical, the second sub- gap (132) is identical with the 4th sub- gap (134) so that anti-c-type gap constitutes upper and lower
Symmetrical structure.
3. a kind of wide-band slot antenna according to claim 2, it is characterised in that the first sub- gap (131), second
Sub- gap (132), the 3rd sub- gap (133) are different, form the sub- gap of Stepped Impedance, realize to the wide-band slot antenna
Mode of resonance control.
4. a kind of wide-band slot antenna according to claim 1, it is characterised in that：The anti-c-type of the wide-band slot antenna
Also include the second vertical sub- gap (137), the 3rd vertical sub- gap (138), and the described first vertical sub- gap inside gap
(136), the second vertical sub- gap (137), the 3rd vertical sub- gap (138) are arranged in parallel.
5. a kind of wide-band slot antenna according to claim 4, it is characterised in that：Described first vertical sub- gap (136),
Second vertical sub- gap (137) and the 3rd vertical sub- gap (138) are the gaps for being operated in 1/2nd wavelength.
6. according to a kind of any described wide-band slot antenna of claim 1 to 5, it is characterised in that：The ribbon feed is single
The composition of first (110) includes that the first ribbon feeds subelement (111) and Article 2 banding feeds subelement (112),
Wherein, Article 2 banding feed subelement (112) is vertical with the lower edge of the substrate (100), and Article 2
The first end of banding feed subelement (112) is arranged on the lower edge of substrate (100), Article 2 banding feed subelement
(112) the second end is connected with the first end of the first ribbon feed subelement (111)；
The Article 2 banding feeds subelement (112) and feeds subelement (111) into obtuse angle with first ribbon.
7. a kind of wide-band slot antenna according to claim 6, it is characterised in that：First ribbon feeds subelement
(111) first end gradually broadens to the strip width at its second end.
8. a kind of wide-band slot antenna according to claim 6, it is characterised in that：The Article 2 banding feeds subelement
(112) subelement (111) into 135 degree of obtuse angles is fed with first ribbon.
9. a kind of wide-band slot antenna according to claim 6, it is characterised in that：The ribbon feed element (110)
Port be 50 ohm of impedance matching.
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| CN201410698895.0A CN104409841B (en) | 2014-11-26 | 2014-11-26 | A kind of wide-band slot antenna |
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| CN201410698895.0A CN104409841B (en) | 2014-11-26 | 2014-11-26 | A kind of wide-band slot antenna |
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| CN104409841B true CN104409841B (en) | 2017-06-06 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105896044A (en) * | 2016-04-08 | 2016-08-24 | 东南大学 | Slot antenna with coaxial feed capacitor-loaded step impedance |
| CN105742804A (en) * | 2016-04-08 | 2016-07-06 | 东南大学 | Coaxial feed capacitance-loaded triple-polarized slot antenna |
| CN105846098A (en) * | 2016-04-08 | 2016-08-10 | 南京邮电大学 | Grid seam earth microstrip feed capacitance loaded tri-polarized slot antenna |
| CN105762524A (en) * | 2016-04-08 | 2016-07-13 | 东南大学 | Coaxial feed capacitor-loaded half slot antenna |
| CN105789874A (en) * | 2016-04-08 | 2016-07-20 | 东南大学 | Capacitor-loaded stepped-impedance triple-polarization slotted antenna |
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