CN209104356U - A kind of arch bending Diminishing Dimension of Log-Periodic Dipole Antenna - Google Patents
A kind of arch bending Diminishing Dimension of Log-Periodic Dipole Antenna Download PDFInfo
- Publication number
- CN209104356U CN209104356U CN201821944123.0U CN201821944123U CN209104356U CN 209104356 U CN209104356 U CN 209104356U CN 201821944123 U CN201821944123 U CN 201821944123U CN 209104356 U CN209104356 U CN 209104356U
- Authority
- CN
- China
- Prior art keywords
- antenna
- oscillator
- vibrator body
- log
- oscillator arms
- 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.)
- Expired - Fee Related
Links
Abstract
The utility model relates to a kind of arch to bend Diminishing Dimension of Log-Periodic Dipole Antenna, be related to orienting all channel antenna construction applications；Including dielectric-slab and two antenna oscillators, two antenna oscillators include vibrator body and oscillator arms, the two sides elongatedness direction of vibrator body is provided with the oscillator arms of alternate shape, the length and width of oscillator arms are successively decreased one by one by bottom end to the top of vibrator body, spacing from the bottom end of vibrator body to top between oscillator arms is successively decreased one by one, the front of dielectric-slab is arranged in one antenna oscillator, another antenna oscillator is set to the back side of dielectric-slab along 180 ° of middle shaft rotation of vibrator body；Oscillator arms are bow-shaped structural；The utility model solves the disadvantages of traditional log-periodic antenna weight weight, size is big, can be using in held radio monitoring and direction-finding equipment；The utility model has that structure is simple, broader bandwidth, light-weight, size is small compared with traditional log-periodic antenna, the advantages of being easily integrated and produce in batches.
Description
Technical field
The utility model relates to orient all channel antenna construction applications more particularly to a kind of bending miniaturization of arch to several weeks
Phase antenna.
Background technique
Log-periodic antenna simple, function admirable, low-cost ultra-wideband antenna as a kind of structure, can be very wide
Frequency band in obtain almost unchanged impedance, directional diagram and gain, obtained widely in shortwave, ultrashort wave and microwave band
Using.In daily life, log-periodic antenna covers commonly used in indoor distribution and elevator signal.In military field, logarithm
Periodic antenna is largely loaded in naval vessel and opportunity of combat, and due to broadband character, this kind of antenna is also widely used for radar
And in military surveillance communication system.In addition, log-periodic antenna is also answered in held radio monitoring and direction-finding equipment
With.
Traditional log-periodic antenna is made of air assembly line and cylinder oscillator, has the shortcomings that weight weight, size are big.
So there is scholar just to propose the design method for the micro belt logarithmic cycle antenna that base and dielectric-slab load.Compared to traditional logarithm
Periodic antenna, micro belt logarithmic cycle antenna have it is light-weight, small in size, be easy to load, production precision is high and stability is good
Advantage.
However, due to log-periodic antenna longest radiating doublet length compared with the half-wavelength of lowest operating frequency
It is quasi-, so the application of traditional log-periodic antenna is just in the occasion of some limited spaces or hidden radio monitoring system
It is restricted, this requires minimize to log-periodic antenna.Up to the present, main miniaturization method has top
Load, unit bending, capacitive load and divide shape etc..Wherein, fractal structure has space filling and self similarity shape two
Main feature can effectively reduce the size of antenna.
Utility model content
The utility model overcomes the shortcomings of the prior art, and the method for shape is divided using micro-strip arch, is effectively reduced
The size of antenna, and have the characteristics that broadband, high-gain, efficiently solves that traditional log-periodic antenna size is big to be lacked
Point can be applied in held radio monitoring and direction-finding equipment.The utility model is achieved by the following technical solution.
A kind of arch bending Diminishing Dimension of Log-Periodic Dipole Antenna, including dielectric-slab and two antenna oscillators, two days
Linear oscillator includes vibrator body and oscillator arms, and the two sides elongatedness direction of the vibrator body is provided with the oscillator of alternate shape
Arm, the length and width of oscillator arms are successively decreased one by one by bottom end to the top of vibrator body, are shaken from the bottom end of vibrator body to top
Spacing between sub- arm is successively decreased one by one, and oscillator arms and the vibrator body are in integral structure；One antenna oscillator is arranged described
The front of dielectric-slab, another antenna oscillator are set to the back side of the dielectric-slab along 180 ° of middle shaft rotation of vibrator body；Institute
The top for stating the vibrator body of antenna oscillator is equipped with power feed hole；The oscillator arms are arch.
Further, the bow-shaped structural that the oscillator arms are made of 1 short rectangular arm and 5 long rectangular arms.
Further, the antenna oscillator includes 25 oscillator arms, and the oscillator arm lengths and width are by oscillator master
Successively successively decrease one by one by 0.88 scale factor on the bottom end of body to top.
Further, the vibrator body is made of assembly line, and the assembly line is parallel double assembly lines.
Further, the bottom end of the vibrator body of the antenna oscillator is equipped with short-circuit line.
The utility model is generated compared with the existing technology to be had the beneficial effect that.
The utility model proposes the Diminishing Dimension of Log-Periodic Dipole Antenna bent based on arch, solve traditional log-periodic antenna
The disadvantages of weight is heavy, size is big, can be using in held radio monitoring and direction-finding equipment.The utility model and traditional logarithm period day
Line is compared, and has that structure is simple, broader bandwidth, light-weight, size is small, the advantages of being easily integrated and produce in batches.
Detailed description of the invention
Fig. 1 is that the utility model arch bends Diminishing Dimension of Log-Periodic Dipole Antenna structural schematic diagram.
Fig. 2 is that the utility model arch bends Diminishing Dimension of Log-Periodic Dipole Antenna oscillator arms structural schematic diagram.
Fig. 3 is that the utility model arch bends Diminishing Dimension of Log-Periodic Dipole Antenna dielectric-slab upper surface schematic diagram.
Fig. 4 is that the utility model arch bends Diminishing Dimension of Log-Periodic Dipole Antenna dielectric-slab lower surface schematic diagram.
Fig. 5 is the return loss plot that the utility model arch bends Diminishing Dimension of Log-Periodic Dipole Antenna.
Fig. 6 is the frequency gain curve that the utility model arch bends Diminishing Dimension of Log-Periodic Dipole Antenna.
Fig. 7 is the E surface radiation directional diagram that the utility model arch bends Diminishing Dimension of Log-Periodic Dipole Antenna.
Fig. 8 is the H surface radiation directional diagram that the utility model arch bends Diminishing Dimension of Log-Periodic Dipole Antenna.
Wherein, 1 is dielectric-slab, and 2 be oscillator arms, and 3 be vibrator body, and 4 be short-circuit line, and 6 be power feed hole, and 201 be short rectangle
Arm, 202 be long rectangular arm.
Specific embodiment
In order to which technical problem to be solved in the utility model, technical solution and beneficial effect is more clearly understood, tie
Embodiment and attached drawing are closed, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein
It is only used to explain the utility model, is not used to limit the utility model.This is described in detail below with reference to examples and drawings
The technical solution of utility model, but the scope of protection is not limited by this.
As Figure 1-Figure 4, the utility model arch bends Diminishing Dimension of Log-Periodic Dipole Antenna, including one layer of dielectric-slab 1, is situated between
1 material of scutum is FR-4, dielectric constant 4.2, with a thickness of 1.6mm；It is attached with an antenna respectively in 1 upper and lower surface of dielectric-slab
Oscillator, antenna oscillator include vibrator body 3 and 25 oscillator arms 2, these oscillator arms 2 are perfact conductor PEC；Vibrator body 3
Two sides elongatedness direction be provided with the oscillator arms 2 of alternate shape, the length of oscillator arms 2 and width by vibrator body 3 bottom end extremely
Successively successively decrease one by one by 0.88 scale factor on top.Spacing from the bottom end of vibrator body 3 to top between oscillator arms 2 is one by one
Successively decrease, the maximum spacing between oscillator arms 2 is 32mm, and the spacing between oscillator arms 2 is successively reduced in 0.88 ratio backward.
Oscillator arms 2 and the vibrator body 3 are in integral structure；One antenna oscillator is attached to the front of dielectric-slab 1, another
A antenna oscillator is attached to the back side of dielectric-slab 1 along 180 ° of middle shaft rotation of vibrator body 3.
Oscillator arms 2 are bow-shaped structural, and each oscillator arms 2 are made of the 1 short long rectangular arm 202 of rectangular arm 201 and 5,
Short rectangular arm 201 is the rectangle of 20*6mm, and long rectangular arm 202 is the rectangle of 21*6mm, and two neighboring rectangular arm junction is
90 ° of angles.
The vibrator body 3 of 1 upper surface of dielectric-slab is assembly line, is perfect electric conductor PEC, assembly line is having a size of 263*
Parallel double assembly lines of 3.06mm.The top of the vibrator body 3 of antenna oscillator is equipped with power feed hole 6, using coaxial feed.Antenna vibration
The bottom end of the vibrator body 3 of son is equipped with short-circuit line 4, and it is highly the PEC cylindrical body of 1.6mm that short-circuit line 4, which is that a radius is 1mm,
It is used as the short-circuit line of antenna.
In order to obtain optimum gain and radiation directivity, need to choose suitable scale factor and spacing factor, finally
Choosing scale factor is 0.88, spacing factor 0.16.The radiation arm one of antenna shares 25 pairs.
As shown in Figure 5-Figure 8, in the example, FR-4 dielectric-slab 1 with a thickness of 1.6mm, dielectric constant 4.4.By adding
After carrying dielectric-slab, Antenna Operation is 0.7 to 7GHz.In order to realize preferable impedance matching, using the width of parallel double assembly lines
For 3.06mm.In order to obtain good gain and radiation characteristic, spacing factor and scale factor are chosen for 0.09 He respectively
0.88.In order to realize the miniaturization of antenna, using the method for arch bending to Harmonic Oscillators size reduction, oscillator structure such as attached drawing
Shown in 2.In addition, antenna uses coaxial feed and the short-circuit structure of a bottom surface radius 1mm, height 1.6mm.Finally, phase
Than traditional log-periodic antenna in work 0.7 to 7GHz, the Diminishing Dimension of Log-Periodic Dipole Antenna of arch bending is in lateral dimension
Reduce 37.7%, longitudinal size reduces 50%, and average gain has good radiation characteristic in 5dBi.
The above content is the further descriptions done in conjunction with specific preferred embodiment to the utility model, cannot
Assert that specific embodiment of the present utility model is only limitted to this, for the utility model person of an ordinary skill in the technical field
For, under the premise of not departing from the utility model, several simple deduction or replace can also be made, all shall be regarded as belonging to
The utility model determines scope of patent protection by the claims submitted.
Claims (5)
1. a kind of arch bends Diminishing Dimension of Log-Periodic Dipole Antenna, which is characterized in that described including dielectric-slab and two antenna oscillators
Two antenna oscillators include vibrator body and oscillator arms, the two sides elongatedness direction of the vibrator body is provided with alternate
The oscillator arms of shape, the length and width of oscillator arms are successively decreased one by one by bottom end to the top of vibrator body, from the bottom end of vibrator body
Successively decrease one by one to the spacing between the oscillator arms of top, oscillator arms and the vibrator body are in integral structure；One antenna oscillator is set
It sets in the front of the dielectric-slab, another antenna oscillator is set to the dielectric-slab along 180 ° of middle shaft rotation of vibrator body
The back side；The top of the vibrator body of the antenna oscillator is equipped with power feed hole；The oscillator arms are arch.
2. a kind of arch according to claim 1 bends Diminishing Dimension of Log-Periodic Dipole Antenna, which is characterized in that the oscillator
The bow-shaped structural that arm is made of 1 short rectangular arm and 5 long rectangular arms.
3. a kind of arch according to claim 1 bends Diminishing Dimension of Log-Periodic Dipole Antenna, which is characterized in that the antenna
Oscillator include 25 oscillator arms, the oscillator arm lengths and width by vibrator body bottom end to top in 0.88 ratio because
Son successively successively decreases one by one.
4. a kind of arch according to claim 1 bends Diminishing Dimension of Log-Periodic Dipole Antenna, which is characterized in that the oscillator
Main body is made of assembly line, and the assembly line is parallel double assembly lines.
5. a kind of arch according to claim 1 bends Diminishing Dimension of Log-Periodic Dipole Antenna, which is characterized in that the antenna
The bottom end of the vibrator body of oscillator is equipped with short-circuit line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821944123.0U CN209104356U (en) | 2018-11-23 | 2018-11-23 | A kind of arch bending Diminishing Dimension of Log-Periodic Dipole Antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821944123.0U CN209104356U (en) | 2018-11-23 | 2018-11-23 | A kind of arch bending Diminishing Dimension of Log-Periodic Dipole Antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209104356U true CN209104356U (en) | 2019-07-12 |
Family
ID=67161189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821944123.0U Expired - Fee Related CN209104356U (en) | 2018-11-23 | 2018-11-23 | A kind of arch bending Diminishing Dimension of Log-Periodic Dipole Antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209104356U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976656A (en) * | 2022-05-25 | 2022-08-30 | 西安电子科技大学 | Miniaturized log-periodic antenna with n-shaped bending unit |
-
2018
- 2018-11-23 CN CN201821944123.0U patent/CN209104356U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976656A (en) * | 2022-05-25 | 2022-08-30 | 西安电子科技大学 | Miniaturized log-periodic antenna with n-shaped bending unit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10734723B2 (en) | Couple multiband antennas | |
| CN205811043U (en) | A kind of M shape three band Planer printed monopole antenna | |
| Kamal et al. | Design of a tri-band microstrip patch antenna for 5G application | |
| CN105932409A (en) | Miniaturized inverted-E-shaped groove type ultra wide band millimeter wave microstrip antenna | |
| JP2008113462A (en) | Coupled multiband antenna | |
| US4814783A (en) | Foreshortened antenna structures | |
| CN209104356U (en) | A kind of arch bending Diminishing Dimension of Log-Periodic Dipole Antenna | |
| US9356340B2 (en) | High gain wideband omnidirectional antenna | |
| CN106450774A (en) | Ultra-wideband high-gain yagi antenna | |
| Goyal et al. | A compact monopole fractal antenna for TV white space energy harvesting applications | |
| CN106848577A (en) | A kind of logarithm period monopole antenna | |
| Antar | Antennas for wireless communication: Recent advances using dielectric resonators | |
| US9331392B1 (en) | Tapered slot antenna with a curved ground plane | |
| CN105119057B (en) | A kind of multiband microstrip antenna | |
| Chen et al. | Printed broadband monopole antenna for WLAN/WiMAX applications | |
| EP2230723A1 (en) | Coupled multiband antennas | |
| CN209329144U (en) | A kind of miniaturization monopole antenna | |
| CN113178688A (en) | Hollow hexagram ultra wide band antenna | |
| CN106961011B (en) | Ultra wideband omni-directional micro-strip antenna array | |
| CN211150775U (en) | Omnidirectional whip antenna | |
| CN217114812U (en) | Four-arm helical antenna | |
| Zhu et al. | Design of a low-profile 3: 1 bandwidth wide-scan tightly coupled phased array antenna | |
| CN206422233U (en) | A kind of logarithm period monopole antenna | |
| CN207883899U (en) | A kind of external WIFI dual-band antennas | |
| Kumar | Multi-Band Characteristics of Fractal Shape Antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190712 Termination date: 20191123 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |