CN104319492A - Ka waveband one-dimensional linear array system - Google Patents
Ka waveband one-dimensional linear array system Download PDFInfo
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- CN104319492A CN104319492A CN201410539127.0A CN201410539127A CN104319492A CN 104319492 A CN104319492 A CN 104319492A CN 201410539127 A CN201410539127 A CN 201410539127A CN 104319492 A CN104319492 A CN 104319492A
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Abstract
The invention provides a Ka waveband one-dimensional linear array system which comprises eight same input/output assembly units, an eight-path radiation antenna and a one minute eight power divider. The eight same input/output assembly units, the eight-path radiation antenna and the one minute eight power divider are distributed in the longitudinal direction perpendicular to an antenna aperture plane. Each input/output assembly unit is composed of a digital attenuator, a digital phase shifter, a driving amplifier, a power amplifier, a two-stage low noise amplifier and two radio frequency switches. The Ka waveband one-dimensional linear array system can increase the number of total array elements and reduce the transmitting power of single array element on the condition of not changing the total synthetic power, accordingly reduces the direct current power consumption of all input/output assemblies, and reduces the design difficulty of the input/output assemblies and the antenna array cost.
Description
Technical field
The present invention relates to linear array field, particularly a kind of Ka wave band one dimensional linear array system.
Background technology
Array antenna is since appearance is till now through very long development time, and purposes is also more and more extensive.At present social array antenna no matter in its traditional application---military domain, or in novel application---civil area all obtains great development.Array antenna design refers to that the pattern requirements by regulation carries out design, the directional diagram that this system is produced and the required directional diagram good approximation of antenna system.How reducing antenna power consumption, reduction design difficulty and antenna cost is then the problem that Antenna Design those skilled in the art will overcome.
Summary of the invention
In view of this, Ka wave band one dimensional linear array system provided by the invention, can in total constant situation of synthesis power, by increasing total array number, reduce the transmitting power of single array element, thus reduce the DC power of whole in-out box, and reduce design difficulty and the aerial array cost of in-out box.
A kind of Ka wave band one dimensional linear array system provided by the invention, comprises eight identical in-out box unit, eight path radiation antennas and one point of eight power dividers; Described eight identical in-out box unit, eight path radiation antennas and one point of eight power dividers all distribute along the longitudinal direction perpendicular to antenna aperature plane, and each in-out box unit is made up of numerical-control attenuator, digital phase shifter, driving amplifier, power amplifier, two-stage LNA and two radio-frequency (RF) switch; The trend that transmits of described system is: riches all the way penetrates signal and waited spoke homophase to be divided into eight road signals through one point of eight power splitter, then inputs to eight road in-out box unit respectively; Signal in in-out box unit sequentially through numerical-control attenuator, digital phase shifter, again through the selection of the first radio-frequency (RF) switch, arrive driving amplifier and the power amplifier of transmitting branch, when signal power be exaggerated meet the requirements of power after, independently radiate to radiating antenna through the second radio-frequency (RF) switch feed-in again, final eight path radiation signals carry out power combing in space, the wave beam required for formation; The Received signal strength trend of described system is: Received signal strength by No. eight antenna individual reception, and then inputs to eight road in-out box unit respectively; Every road enters the Received signal strength of described in-out box unit all through the selection of the second radio-frequency (RF) switch, arrive the first order low noise amplifier of receiving branch to carry out after signal amplification through the 3rd radio-frequency (RF) switch, enter second level low noise amplifier again and carry out signal amplification, then enter one point of eight power splitter sequentially through the first radio-frequency (RF) switch, numerical-control attenuator and phase shifter and synthesize a road radiofrequency signal, then export to the signal processing subsystem of rear class.
The transmitting-receiving branch road of in-out box unit of the present invention does not use circulator to isolate, reason is that the input saturation power of millimeter wave circulator and isolation are general all less, and the saturation power of this frequency range radio-frequency (RF) switch and isolation all reach index request, therefore instead of circulator by radio-frequency (RF) switch; In addition, the noise factor of system requires that the prime overall gain of receiving branch is enough large, but too much the dynamic range on LNA level joint conference docking revenue and expenditure road has impact, simultaneously because the saturation power of LNA is limited, in order to prevent the saturated rear damage rear class LNA of prime LNA, so receiving branch only adopts the cascade of two-stage LNA, the receiving gain of a part is arranged in power combing late-class circuit simultaneously; In order to guarantee there is enough large transmitting power to radiating antenna feed-in, final stage power amplifier usually works in Saturated output state, and this will reduce its working gain, so add in prime the driving amplifier that one step gain is 20dB; The isolation of radio-frequency (RF) switch is limited, measured value only has about 25dB, and two-stage LNA and driving amplifier, power amplifier define the loop of a closed loop, therefore damage in order to avoid self-excitation during each amplifier operation, take the programme of work of transmitting-receiving timesharing in design, namely when driving amplifier and the power amplifier work of transmitting branch, the power cut-off of LNA, make it to quit work, otherwise when receiving branch works, the amplifier of transmitting branch is as the same.
In sum, Ka wave band one dimensional linear array system of the present invention, can in total constant situation of synthesis power, by increasing total array number, reduce the transmitting power of single array element, thus reduce the DC power of whole in-out box, and reduce design difficulty and the aerial array cost of in-out box.
Embodiment
For making the object of the embodiment of the present invention, technical scheme and advantage clearly, clear, complete description is carried out below by the technical scheme in the embodiment of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under the prerequisite not making creative work, all belongs to the scope of protection of the invention.
One embodiment of the invention provides a kind of Ka wave band one dimensional linear array system, comprises eight identical in-out box unit, eight path radiation antennas and one point of eight power dividers; Described eight identical in-out box unit, eight path radiation antennas and one point of eight power dividers all distribute along the longitudinal direction perpendicular to antenna aperature plane, and each in-out box unit is made up of numerical-control attenuator, digital phase shifter, driving amplifier, power amplifier, two-stage LNA and two radio-frequency (RF) switch; The trend that transmits of described system is: riches all the way penetrates signal and waited spoke homophase to be divided into eight road signals through one point of eight power splitter, then inputs to eight road in-out box unit respectively; Signal in in-out box unit sequentially through numerical-control attenuator, digital phase shifter, again through the selection of the first radio-frequency (RF) switch, arrive driving amplifier and the power amplifier of transmitting branch, when signal power be exaggerated meet the requirements of power after, independently radiate to radiating antenna through the second radio-frequency (RF) switch feed-in again, final eight path radiation signals carry out power combing in space, the wave beam required for formation; The Received signal strength trend of described system is: Received signal strength by No. eight antenna individual reception, and then inputs to eight road in-out box unit respectively; Every road enters the Received signal strength of described in-out box unit all through the selection of the second radio-frequency (RF) switch, arrive the first order low noise amplifier of receiving branch to carry out after signal amplification through the 3rd radio-frequency (RF) switch, enter second level low noise amplifier again and carry out signal amplification, then enter one point of eight power splitter sequentially through the first radio-frequency (RF) switch, numerical-control attenuator and phase shifter and synthesize a road radiofrequency signal, then export to the signal processing subsystem of rear class.After the setting of the 3rd radio-frequency (RF) switch can prevent the supersaturation of first order low noise amplifier, the second low noise amplifier is burnt, and add the isolation of transmitting-receiving branch road.
Ka wave band one dimensional linear array system of the present invention, in total constant situation of synthesis power, by increasing total array number, the transmitting power of single array element can be reduced, thus reduce the DC power of whole in-out box, and reduce design difficulty and the aerial array cost of in-out box.
The key technical indexes that one dimensional linear array of the present invention can realize is as follows:
Array system technical indicator:
In-out box monotechnics index:
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in previous embodiment, or equivalent replacement is carried out to wherein portion of techniques feature, and these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (1)
1. a Ka wave band one dimensional linear array system, comprises eight identical in-out box unit, eight path radiation antennas and one point of eight power dividers; It is characterized in that, described eight identical in-out box unit, eight path radiation antennas and one point of eight power dividers all distribute along the longitudinal direction perpendicular to antenna aperature plane, and each in-out box unit is made up of numerical-control attenuator, digital phase shifter, driving amplifier, power amplifier, two-stage LNA and two radio-frequency (RF) switch; The trend that transmits of described system is: riches all the way penetrates signal and waited spoke homophase to be divided into eight road signals through one point of eight power splitter, then inputs to eight road in-out box unit respectively; Signal in in-out box unit sequentially through numerical-control attenuator, digital phase shifter, again through the selection of the first radio-frequency (RF) switch, arrive driving amplifier and the power amplifier of transmitting branch, when signal power be exaggerated meet the requirements of power after, independently radiate to radiating antenna through the second radio-frequency (RF) switch feed-in again, final eight path radiation signals carry out power combing in space, the wave beam required for formation; The Received signal strength trend of described system is: Received signal strength by No. eight antenna individual reception, and then inputs to eight road in-out box unit respectively; Every road enters the Received signal strength of described in-out box unit all through the selection of the second radio-frequency (RF) switch, arrive the first order low noise amplifier of receiving branch to carry out after signal amplification through the 3rd radio-frequency (RF) switch, enter second level low noise amplifier again and carry out signal amplification, then enter one point of eight power splitter sequentially through the first radio-frequency (RF) switch, numerical-control attenuator and phase shifter and synthesize a road radiofrequency signal, then export to the signal processing subsystem of rear class.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410539127.0A CN104319492A (en) | 2014-09-27 | 2014-09-27 | Ka waveband one-dimensional linear array system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410539127.0A CN104319492A (en) | 2014-09-27 | 2014-09-27 | Ka waveband one-dimensional linear array system |
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| CN104319492A true CN104319492A (en) | 2015-01-28 |
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| CN201410539127.0A Pending CN104319492A (en) | 2014-09-27 | 2014-09-27 | Ka waveband one-dimensional linear array system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107728701A (en) * | 2017-09-12 | 2018-02-23 | 北京无线电测量研究所 | A kind of Ka wave bands and spread degree control assembly |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2706373A1 (en) * | 2012-09-10 | 2014-03-12 | Honeywell International Inc. | Combined FMCW and FM pulse-compression radar systems and methods |
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2014
- 2014-09-27 CN CN201410539127.0A patent/CN104319492A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2706373A1 (en) * | 2012-09-10 | 2014-03-12 | Honeywell International Inc. | Combined FMCW and FM pulse-compression radar systems and methods |
Non-Patent Citations (1)
| Title |
|---|
| 魏宪举: "宽带T/R组件的研究与设计", 《中国优秀硕士学位论文》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107728701A (en) * | 2017-09-12 | 2018-02-23 | 北京无线电测量研究所 | A kind of Ka wave bands and spread degree control assembly |
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