CN104577348B - A kind of low axle is than multi-arm plane gap helical antenna - Google Patents
A kind of low axle is than multi-arm plane gap helical antenna Download PDFInfo
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- CN104577348B CN104577348B CN201410797061.5A CN201410797061A CN104577348B CN 104577348 B CN104577348 B CN 104577348B CN 201410797061 A CN201410797061 A CN 201410797061A CN 104577348 B CN104577348 B CN 104577348B
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- circular
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- media substrate
- microstrip line
- series feed
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Abstract
The invention discloses a kind of low axle than multi-arm plane gap helical antenna, including circular media substrate, circular metal patch, series feed microstrip line, metal reflection cavity, media support ring and coaxial interface, the back side of described circular media substrate sets the circular metal patch in the multiple gaps of corrosion, the front of circular media substrate sets the series feed microstrip line of corrosion, the lower section of the circular media substrate is provided with coaxial interface and metal reflection cavity, and the circular media substrate is connected by media support ring with metal reflection cavity.The low axle is simpler than multi-arm plane gap helical antenna feeding network, feed amplitude is adjustable, standing wave is small, axle is than small；The low axle can both ensure the phase difference of stabilization between multiple gaps than multi-arm plane gap helical antenna, can ensure that each cutler feed amplitude is consistent again, phase center is stable in beam area, preferably promotes the use of.
Description
Technical field
It is specially one kind the present invention relates to the field suitable for multifunction aircraft integrated system antennas such as communication, navigation
Low axle is than multi-arm plane gap helical antenna.
Background technology
Multi-arm plane gap helical antenna has the advantages that phase center stabilization, small volume, simple in construction, easy processing, often
It is used as the navigation, positioning, measurement antenna of GPS.GNSS key effect is to provide time, space reference
To all real-time dynamic informations related to position.It is the strategy of national defense safety, Homeland Security, public safety and economic security
Deter basic resource and important technical support system.The satellite navigation system of current global operation has the gps system in the U.S., Russia sieve
This GLONASS systems, the Galileo system in Europe and the Beidou II satellite navigation and location system of China.General antenna due to
Its phase center is unstable to bring the error more than Centimeter Level more than even ten meter levels, it is impossible to realize that Technology of Precision Measurement is needed
The grade measurement accuracy wanted.
Current structure type and correlation technique both at home and abroad applied to measurement type antenna can substantially be divided into two classes：One
Kind be the microstrip antenna using many feeds of axial symmetry, as Trimble companies Zephyr measurement type antennas and Topen companies
LegAnt3 antennas, are all the axial symmetries for ensureing antenna by many Feed Designs of axial symmetry, and feed is more, and symmetry is better, but
It is that feeding network is more complicated, is difficult to realize.Second is the multi-arm plane gap helical antenna for using " Hot Wheels " technology, such as
The GPS-700 antennas of Novatel companies and the Sok600 antennas of Sokkia companies, are ensured by multiple snail slot antennas
The high stable phase center of antenna, feeding network uses serial traveling wave feed microstrip line circuit, simple in construction, it is impossible to ensure each seam
Gap feed amplitude is consistent, ultimately results in antenna phase center stability variation, axle than deteriorating.
The content of the invention
It is an object of the invention to overcome the shortcoming of above-mentioned prior art simple there is provided a kind of feeding network, amplitude is fed
The low axle that adjustable, standing wave is small, axle is more stable than phase center in small, beam area is than multi-arm plane gap helical antenna.
To achieve the above object, the present invention provides following technical scheme：A kind of low axle than multi-arm plane gap helical antenna,
It is described including circular media substrate, circular metal patch, series feed microstrip line, metal reflection cavity, media support ring and coaxial interface
The back side of circular media substrate the circular metal patch in the multiple gaps of corrosion is set, the front of circular media substrate sets corrosion
Series feed microstrip line, the lower section of the circular media substrate is provided with coaxial interface and metal reflection cavity, the circular media substrate
It is connected by media support ring with metal reflection cavity.
As further scheme of the invention, the center of circular media substrate is provided with aperture, and coaxial line inner core passes through aperture
The series feed microstrip line set with circular media substrate front side is connected, and series feed microstrip line terminal position is provided with gap, gap and placed
Load resistance, what the series feed microstrip line and circular media substrate front side that load resistance connection circular media substrate back is set were set
Circular metal patch.
As further scheme of the invention, described circular metal patch is etched with N number of gap and 2≤N≤16, N number of
Gap is evenly distributed on circular metal patch, and each gap is made up of fan-shaped gap, rectangular aperture and special-shaped gap, circular gold
Belong to paster center provided with perforation, coaxial line crust is connected with perforated edge, coaxial line inner core passes through perforation and circular media substrate
On aperture be connected with the head end of the series feed microstrip line of circular media substrate front side, by adjust respectively fan-shaped gap radius and
Angle can control cutler feed amplitude.
As further scheme of the invention, the interlude of series feed microstrip line is by 50 ohm to R ohm of matching section, string
The end of feedback microstrip line is connected by load resistance with the metal patch of circular media substrate back, girth of series feed microstrip line etc.
In series feed microstrip waveguide wavelength, the phase difference of 2 π/N between N number of gap is realized, and can suitably reduce gap number as needed
Amount.
As scheme of the invention further, the height and metal reflection cavity of metal reflection cavity and circular media substrate away from
From size can adjust.
Compared with prior art, advantages of the present invention：The low axle is simpler than multi-arm plane gap helical antenna feeding network,
Feed amplitude is adjustable, standing wave is small, axle is than small；The low axle can both ensure than multi-arm plane gap helical antenna between multiple gaps
Stable phase difference, can ensure that each cutler feed amplitude is consistent, phase center is stable in beam area, preferably promotes the use of again.
Brief description of the drawings
Fig. 1 is overall structure diagram of the invention；
Fig. 2 is circular media board structure schematic diagram of the invention；
Fig. 3, Fig. 4 are circular metal patch structural representation of the invention；
Fig. 5, Fig. 6 are series feed microstrip line construction schematic diagram of the invention.
In figure：1st, circular media substrate, 2, circular metal patch, 3, series feed microstrip line, 4, metal reflection cavity, 5, medium branch
Frame ring, 6, coaxial interface, 101, aperture, 102, gap, 201, fan-shaped gap, 202, rectangular aperture, 203, special-shaped gap, 204,
Perforation, 301, the head end of series feed microstrip line, 302, the interlude of series feed microstrip line, 303, the end of series feed microstrip line, R1, metal
Radius, the radius of media support ring of reflection cavity, H1, reflection cavity height, H2, reflection cavity and medium substrate distance, R, sector
The radius in gap, θ, the angle in fan-shaped gap.
Embodiment
As shown in figure 1, a kind of low axle is pasted than multi-arm plane gap helical antenna, including circular media substrate 1, circular metal
Piece 2, series feed microstrip line 3, metal reflection cavity 4, media support ring 5 and coaxial interface 6, the back side of described circular media substrate 1
The circular metal patch 2 in the multiple gaps of corrosion is set, and the front of circular media substrate 1 sets the series feed microstrip line 3 of corrosion, described
The lower section of circular media substrate 1 is provided with coaxial interface 6 and metal reflection cavity 4, and the circular media substrate 1 passes through media support ring
5 are connected with metal reflection cavity 4；The height of metal reflection cavity 4 is H1, and the distance of metal reflection cavity 4 and circular media substrate 2 is H2,
By adjusting H1, H2 size, gain and the axle ratio of antenna can be optimized, metal reflection cavity 4 passes through annular media support 5 and circle
Shape medium substrate 3 is connected to fix the position of metal reflection cavity 4.
As shown in Fig. 2 the radius of metal reflection cavity 4 and the radius of media support ring of the lower section of circular media substrate 1 are
R1, the center of circular media substrate 1 is provided with aperture 101, and coaxial line inner core is set through aperture 101 with the front of circular media substrate 1
The series feed microstrip line 3 put is connected, and the series feed position of microstrip line end 303 is provided with gap 102, gap 102 and places load resistance, bears
Carry the circular metal that the series feed microstrip line 3 and circular media substrate front side of the back side setting of resistance connection circular media substrate 1 are set
Paster 2.
As shown in Figure 3,4, described circular metal patch 2 is etched with N number of gap and 2≤N≤16, and N number of gap is uniformly divided
Cloth is on circular metal patch, and each gap is made up of fan-shaped gap 201, rectangular aperture 202 and special-shaped gap 203, circular gold
Belong to the center of paster 2 provided with perforation 204, coaxial line crust is connected with 204 edges of perforation, and coaxial line inner core passes through perforation 204 and circle
Aperture 101 on shape medium substrate 1 is connected with the head end 301 of the series feed microstrip line of circular media substrate front side, by adjusting respectively
The radius R and angle, θ in the fan-shaped gap 201 of section can control cutler feed amplitude, so that gap is in resonant condition and coupling
The energy arrived is impartial.
As shown in Figure 5,6, the head end 301 of series feed microstrip line is connected with the coaxial line inner core of aperture 101, series feed microstrip line
Interlude 302 is that the end 303 of series feed microstrip line passes through load resistance and circular media by 50 ohm to R ohm of matching section
The circular metal patch 2 at the back side of substrate 1 is connected, and the girth of series feed microstrip line 3 is equal to series feed microstrip waveguide wavelength, realizes N number of
2 π/N phase difference between gap.Some occasions can suitably reduce gap quantity to realize antenna miniaturization purpose, it is ensured that
The length of series feed microstrip line 3 is bent in the case of being equal to waveguide wavelength to series feed microstrip line 3.
Above example is only to introduce the preferred case of the present invention, to those skilled in the art, without departing substantially from this
Any obvious changes and improvements carried out in the range of spirit, are regarded as the part of the present invention.
Claims (1)
1. a kind of low axle is than multi-arm plane gap helical antenna, including circular media substrate, circular metal patch, series feed micro-strip
Line, metal reflection cavity, media support ring and coaxial interface, it is characterised in that the back side of described circular media substrate sets rotten
The circular metal patch in multiple gaps is lost, the front of circular media substrate sets the series feed microstrip line of corrosion, the circular media
The lower section of substrate is provided with coaxial interface and metal reflection cavity, and the circular media substrate passes through media support ring and metal reflection cavity
Connection, the center of circular media substrate is provided with aperture, the string that coaxial line inner core is set through aperture with circular media substrate front side
Present microstrip line to be connected, the terminal position of series feed microstrip line, which is provided with gap, gap, places load resistance, the end of series feed microstrip line
Be connected by load resistance with the metal patch of circular media substrate back, described circular metal patch be etched with N number of gap,
And 2≤N≤16, N number of gap is evenly distributed on circular metal patch, and each gap is by fan-shaped gap, rectangular aperture and abnormity
Gap is constituted, and circular metal patch center is connected provided with perforation, coaxial line crust with perforated edge, and coaxial line inner core passes through perforation
And the aperture on circular media substrate is connected with the head end of the series feed microstrip line of circular media substrate front side, pass through regulation fan respectively
The radius and angle in shape gap can control cutler feed amplitude, and the interlude of series feed microstrip line is by 50 ohm to R ohm
Matching section, the girth of series feed microstrip line is equal to series feed microstrip waveguide wavelength, realizes the phase difference of 2 π/N between N number of gap, and
Gap quantity can be suitably reduced as needed, and the height of metal reflection cavity can be adjusted, and metal reflection cavity and circular media
The distance of substrate be sized to regulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410797061.5A CN104577348B (en) | 2014-12-18 | 2014-12-18 | A kind of low axle is than multi-arm plane gap helical antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410797061.5A CN104577348B (en) | 2014-12-18 | 2014-12-18 | A kind of low axle is than multi-arm plane gap helical antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104577348A CN104577348A (en) | 2015-04-29 |
| CN104577348B true CN104577348B (en) | 2017-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410797061.5A Active CN104577348B (en) | 2014-12-18 | 2014-12-18 | A kind of low axle is than multi-arm plane gap helical antenna |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224230A (en) * | 2019-05-23 | 2019-09-10 | 北京理工大学 | A kind of plus cavity reflector high-gain broadband direct dipole antenna |
| CN111082209B (en) * | 2019-12-31 | 2021-09-21 | 上海微波技术研究所（中国电子科技集团公司第五十研究所） | Low-profile planar helical antenna adopting novel feed mode |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587987A (en) * | 2009-06-26 | 2009-11-25 | 上海大学 | Balun-free low-section plane two-arm groove helical array antenna |
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2014
- 2014-12-18 CN CN201410797061.5A patent/CN104577348B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101587987A (en) * | 2009-06-26 | 2009-11-25 | 上海大学 | Balun-free low-section plane two-arm groove helical array antenna |
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| CN104577348A (en) | 2015-04-29 |
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