CN203326113U - Electrically tunable phase antenna - Google Patents
Electrically tunable phase antenna Download PDFInfo
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- CN203326113U CN203326113U CN2013203818431U CN201320381843U CN203326113U CN 203326113 U CN203326113 U CN 203326113U CN 2013203818431 U CN2013203818431 U CN 2013203818431U CN 201320381843 U CN201320381843 U CN 201320381843U CN 203326113 U CN203326113 U CN 203326113U
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Abstract
The utility model relates to the technical field of electrocommunication, specifically to an electrically tunable phase antenna which comprises a coaxial line interface, a broadband printing one-arm helical antenna, an active controllable circuit and a dielectric substrate. The broadband printing one-arm helical antenna is printed on the upper surface of the dielectric substrate. An inner conductor of the coaxial line interface is directly connected with an input port of the broadband printing one-arm helical antenna through a hole in the dielectric substrate. An outer conductor is grounded. The active controllable circuit comprises an adjustable capacitor and a DC bias circuit. One end of the adjustable capacitor is connected at the end of the broadband printing one-arm helical antenna, and the other end is directly grounded. The DC bias circuit is connected in parallel to two ends of the adjustable capacitor. By an adjustable capacitor loading mode and through controlling continuous changes of adjustable capacitance, continuous changes of phase characteristic of the antenna are realized. The electrically tunable phase antenna has a simple design structure, is easy to realize, requires low cost, has strong operationality, and is used to solve the bandwidth-constrained problem.
Description
Technical field
The utility model relates to the electronic communication field, and a kind of electric phase modulation position antenna specifically can be used for the microwave system of production, retail, phased array antenna and the requirement of broadband Continuous phase shifting.
Background technology
Electricity phase modulation position antenna is a kind of by means of loading tunable capacitor and broadband printing Monobrachial spiral antenna is realized the antenna that the antenna phase continuity is adjustable.This antenna is wide as a kind of working band, the relatively simple continuous phase antenna of structure, can both extensive use in various microwave systems.
Traditional phase modifying equipment is called phase shifter, and phase shifter, according to used control circuit difference, can be divided into " simulation " phase shifter and " numeral " phase shifter." simulation " phase shifter is by the size of the analog quantity of voltage or electric current, controls the variation of output phase shift amount.For example, voltage-controlled variable capacitance diode, by changing its equivalent capacity, realize the variation of circuit equivalent phase place." numeral " phase shifter is by the difference of coding, controls the variation of output phase shift amount, because digitized figure place general finite, so digital phase shifter is levied its control precision or error with the minimum phase shift scale.
In traditional phased array antenna, need to introduce the feed phase-shift network in the rear end of antenna, change the phase place of antenna, realize the phase array function.Yet, along with the increase of aerial array scale, the design complexities of feed phase-shift network also can correspondingly improve, the insertion loss of introducing also can become greatly, may cause the deterioration of array performance.
Existing phased array antenna technology is widely used, but along with scientific and technical progress and the needs of productive life, working band to phased array antenna requires more and more wider, the reliability of phase shifting accuracy, system and simplicity of design degree require also more and more higher, yet utilize prior art to meet These parameters simultaneously, still have larger degree of difficulty.
Broadband printing Monobrachial spiral antenna is a kind of ultra broadband circular polarized antenna, extensive use in the antenna technology equipment such as remote-control romote-sensing, satellite communication and meteorological radar.Helical antenna is a kind of frequency-independent antenna, and its resonance frequency is directly related with the brachium of helix.In the situation that fixedly the helical antenna brachium is constant, different frequency correspondences different phase places; In like manner, at identical frequency, different helical antenna brachiums same corresponding different phase places.
The utility model content
Technical problem to be solved in the utility model is, overcome that above-mentioned existing phased array antenna frequency band is wide not, feed phase-shift network design complexities is large, the problem of the reliability deficiency of phase shifting accuracy and system, a kind of electric phase modulation position antenna is proposed, the characteristic of phase shift function and antenna self is combined, with simple structural design, realize the improvement of main performance.
The technical scheme that the utility model solves above technical problem is:
A kind of electric phase modulation position antenna, comprise coaxial line interface, fixed antenna, active controlable electric current and medium substrate, and the coaxial line interface comprises inner wire and outer conductor, and fixed antenna is a broadband printing Monobrachial spiral antenna; Broadband printing Monobrachial spiral antenna is printed on the upper surface of medium substrate, for radiation and reception space electromagnetic wave, the inner wire of coaxial line interface directly is connected with the input port of broadband printing Monobrachial spiral antenna by the perforation on medium substrate, the outer conductor ground connection of coaxial line interface, for connecting broadband printing Monobrachial spiral antenna and external circuit; Active controlable electric current comprises a tunable capacitor and DC bias circuit, one end of tunable capacitor is connected to the end of broadband Monobrachial spiral antenna, the direct ground connection of an other end, DC bias circuit is connected in parallel on the two ends of tunable capacitor, for the phase characteristic of control antenna; Final all signals are by the output of coaxial line interface;
Output voltage by the regulation direct-current bias circuit, control the capacitance size of tunable capacitor, capacitance varies in size, the corresponding time cycle difference that discharges and recharges, utilize the difference that discharges and recharges the time cycle of tunable capacitor, change the period of motion of the surface distributed electric current of broadband printing Monobrachial spiral antenna, thereby change equivalently its phase characteristic; The continuity of the capacitance of tunable capacitor changes the phase place generation continuity that guarantees broadband printing Monobrachial spiral antenna and changes; The broadband operation characteristic of broadband printing Monobrachial spiral antenna guarantees the broadband operation characteristic of whole system.
The technical scheme that the utility model further limits is:
Aforesaid electric phase modulation position antenna, the impedance of coaxial line interface is 50 ohm.
The utility model is by the tunable capacitor loading technique scheme based on common, the characteristic of phase shift function and antenna self is combined, do not need to adopt the relatively high phase shifter of price or labyrinth, cost can control to very low, thereby has greatly expanded the application of phased array antenna.
Helical antenna is a kind of frequency-independent antenna, and its resonance frequency is directly related with the brachium of helix, in the situation that fixedly the helical antenna brachium is constant, different frequency correspondences different phase places; In like manner, at identical frequency, different helical antenna brachiums same corresponding different phase places.The utility model design just is being based on such principle, load tunable capacitor in antenna end, change the period of motion of antenna surface distributed current, can the equivalence reach, different capacitance correspondences different antenna brachiums, and the continuity by capacitance changes the continuity variation that has realized phase place.
The tunable capacitor loading technique of electric phase modulation position antenna based on common of the utility model design, the continuity that realizes the phase characteristic of antenna changes, the characteristic of phase shift function and antenna self is combined, take full advantage of the characteristics of helical antenna, realize integrated design, do not used the structure high phase shifter relative to price of structure relative complex, therefore simplified the system configuration of phased array antenna, reduced production cost, thus improving performance expanded application greatly; What use due to the utility model is broadband printing Monobrachial spiral antenna simultaneously, broadening phased array antenna bandwidth and can realize low Section Design, structural volume can significantly reduce, applicable to various application occasions.Below enumerate two applications:
(1) radio-frequency (RF) phse modulating system:
In general communication system, phase modulation technique is modulated on baseband signal, then the signal after modulation is upconverted to radiofrequency signal, arrives free space by antenna transmission, the system configuration more complicated.Application the utility model, can change the implementation of phase modulation technique, and simplify corresponding system configuration; The emission simple signal utilizes the analogue phase modulation circuit to control the initial phase of transmitting antenna simultaneously, so just at radio-frequency head, has realized phase-modulation.The application of this technology can simplied system structure, reduces production costs, and realizes simple phase-modulation emission system, has broad application prospects.
(2) ultra broadband Phased Array Radar Antenna:
In the ultra broadband phased array radar, phase place by the control antenna unit realizes beam scanning, in the situation that bandwidth requirement is very wide, general microwave phase shifter can not realize realizing the requirement of bandwidth and Phase shift precision simultaneously, the utility model has solved this problem, only need in the engineering application, add suitable additional device and get final product; Simultaneously simple structure, cheap cost make the scale application become possibility, have expanded the application of ultra broadband phased array radar.
The accompanying drawing explanation
Fig. 1 is overall structure schematic diagram of the present utility model.
Fig. 2 is overall structure stereogram of the present utility model.
Fig. 3 is fixed antenna schematic diagram of the present utility model.
Fig. 4 is active controlable electric current figure of the present utility model.
Fig. 5 is the internal and external conductor structural representation of coaxial line interface of the present utility model.
Embodiment
Embodiment 1
The present embodiment is a kind of electric phase modulation position antenna, as Figure 1-5, comprise coaxial line interface 11, fixed antenna 12, active controlable electric current 13 and medium substrate 14, coaxial line interface 11 comprises inner wire 111 and outer conductor 112, the impedance of coaxial line interface 11 is 50 ohm, and fixed antenna 12 is broadband printing Monobrachial spiral antennas 121; Broadband printing Monobrachial spiral antenna 121 is printed on the upper surface of medium substrate 14, for radiation and reception space electromagnetic wave, the inner wire 111 of coaxial line interface 11 directly is connected with the input port of broadband printing Monobrachial spiral antenna 121 by the perforation on medium substrate 14, outer conductor 112 ground connection of coaxial line interface 11, for connecting broadband printing Monobrachial spiral antenna 121 and external circuit; Active controlable electric current 13 comprises a tunable capacitor 131 and DC bias circuit 132, one end of tunable capacitor 131 is connected to the end of broadband Monobrachial spiral antenna 121, the direct ground connection of an other end, DC bias circuit 132 is connected in parallel on the two ends of tunable capacitor 131, for the phase characteristic of control antenna; Final all signals are by coaxial line interface (11) output.Output voltage by regulation direct-current bias circuit 132, control the capacitance size of tunable capacitor 131, capacitance varies in size, the corresponding time cycle difference that discharges and recharges, utilize the difference that discharges and recharges the time cycle of tunable capacitor 131, change the period of motion of the surface distributed electric current of broadband printing Monobrachial spiral antenna 121, thereby change equivalently its phase characteristic; The continuity of the capacitance of tunable capacitor 131 changes the phase place generation continuity that guarantees broadband printing Monobrachial spiral antenna 121 and changes; The broadband operation characteristic of broadband printing Monobrachial spiral antenna 121 guarantees the broadband operation characteristic of whole system.
The inner wire 111 of coaxial line interface 11 directly is connected with the input port of broadband printing Monobrachial spiral antenna 121 by the perforation on medium substrate 14, outer conductor 112 ground connection, total plays and connects broadband printing Monobrachial spiral antenna 121 and external circuit purpose.
Fixed antenna 12 is broadband printing Monobrachial spiral antenna 121, is printed on the upper surface of medium substrate 14, and for radiation and reception space electromagnetic wave, its broadband operation characteristic guarantees the broadband operation characteristic of whole system.
Active controlable electric current 13 comprises a tunable capacitor 131 and DC bias circuit 132, one end of tunable capacitor 131 is connected to the end of broadband Monobrachial spiral antenna 121, the direct ground connection of an other end, DC bias circuit 132 is connected in parallel on the two ends of tunable capacitor 131, controls the capacitance size of tunable capacitor 131.
Active controlable electric current 13 utilizes the continuity of the output voltage amplitude of DC bias circuit 132 to change, control the sequential change of the capacitance of tunable capacitor 131, thereby change the time cycle that discharges and recharges of tunable capacitor 131, utilize tunable capacitor 131 to discharge and recharge the difference of time cycle, change the period of motion of the surface distributed electric current of broadband printing Monobrachial spiral antenna 121, thereby change equivalently broadband printing Monobrachial spiral antenna 121 phase characteristics, the continuity of tunable capacitor 131 capacitances changes the phase place generation continuity that can guarantee broadband printing Monobrachial spiral antenna 121 and changes.
In addition to the implementation, the utility model can also have other execution modes.All employings are equal to the technical scheme of replacement or equivalent transformation formation, all drop on the protection range of the utility model requirement.
Claims (2)
1. an electric phase modulation position antenna, comprise coaxial line interface (11), fixed antenna (12), active controlable electric current (13) and medium substrate (14), described coaxial line interface (11) comprises inner wire (111) and outer conductor (112), and described fixed antenna (12) is a broadband printing Monobrachial spiral antenna (121); It is characterized in that: described broadband printing Monobrachial spiral antenna (121) is printed on the upper surface of medium substrate (14), for radiation and reception space electromagnetic wave, the inner wire (111) of described coaxial line interface (11) directly is connected with the input port of broadband printing Monobrachial spiral antenna (121) by the perforation on medium substrate (14), outer conductor (112) ground connection, for connecting broadband printing Monobrachial spiral antenna (121) and external circuit; Described active controlable electric current (13) comprises a tunable capacitor (131) and DC bias circuit (132), one end of described tunable capacitor (131) is connected to the end of broadband Monobrachial spiral antenna (121), the direct ground connection of an other end, described DC bias circuit (132) is connected in parallel on the two ends of tunable capacitor (131), for the phase characteristic of control antenna; Final all signals are by coaxial line interface (11) output;
Output voltage by regulation direct-current bias circuit (132), control the capacitance size of tunable capacitor (131), capacitance varies in size, the corresponding time cycle difference that discharges and recharges, utilize the difference that discharges and recharges the time cycle of tunable capacitor (131), change the period of motion of the surface distributed electric current of broadband printing Monobrachial spiral antenna (121), thereby change equivalently its phase characteristic; The continuity of the capacitance of tunable capacitor (131) changes the phase place generation continuity that guarantees broadband printing Monobrachial spiral antenna (121) and changes; The broadband operation characteristic of broadband printing Monobrachial spiral antenna (121) guarantees the broadband operation characteristic of whole system.
2. electric phase modulation as claimed in claim 1 position antenna, it is characterized in that: the impedance of described coaxial line interface (11) is 50 ohm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203818431U CN203326113U (en) | 2013-06-28 | 2013-06-28 | Electrically tunable phase antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013203818431U CN203326113U (en) | 2013-06-28 | 2013-06-28 | Electrically tunable phase antenna |
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| Publication Number | Publication Date |
|---|---|
| CN203326113U true CN203326113U (en) | 2013-12-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013203818431U Expired - Fee Related CN203326113U (en) | 2013-06-28 | 2013-06-28 | Electrically tunable phase antenna |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346401A (en) * | 2013-06-28 | 2013-10-09 | 无锡创元电子科技有限公司 | Phase electric modulation antenna |
| CN107919527A (en) * | 2017-11-07 | 2018-04-17 | 电连技术股份有限公司 | A kind of antenna assembly and terminal device |
| US11888470B2 (en) | 2021-11-23 | 2024-01-30 | Innolux Corporation | Electronic device |
-
2013
- 2013-06-28 CN CN2013203818431U patent/CN203326113U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346401A (en) * | 2013-06-28 | 2013-10-09 | 无锡创元电子科技有限公司 | Phase electric modulation antenna |
| CN103346401B (en) * | 2013-06-28 | 2015-04-08 | 无锡创元电子科技有限公司 | Phase electric modulation antenna |
| CN107919527A (en) * | 2017-11-07 | 2018-04-17 | 电连技术股份有限公司 | A kind of antenna assembly and terminal device |
| US11888470B2 (en) | 2021-11-23 | 2024-01-30 | Innolux Corporation | Electronic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131204 Termination date: 20140628 |
|
| EXPY | Termination of patent right or utility model |