CN214099927U - Millimeter wave dual-beam phased array antenna - Google Patents
Millimeter wave dual-beam phased array antenna Download PDFInfo
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- CN214099927U CN214099927U CN202120309874.0U CN202120309874U CN214099927U CN 214099927 U CN214099927 U CN 214099927U CN 202120309874 U CN202120309874 U CN 202120309874U CN 214099927 U CN214099927 U CN 214099927U
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Abstract
The utility model discloses a millimeter wave dual-beam phased array antenna, which comprises a plurality of antenna units and a plurality of dual-beam phased array units; four input ends of the dual-beam phased array unit are connected to the antenna unit; each dual-beam phased array unit outputs dual-branch beams. The millimeter wave dual-beam phased array antenna is wide in coverage range, the number of the tracked targets is increased, the coverage range is wider, and the advantages of power consumption and cost of the millimeter wave dual-beam phased array antenna are more obvious.
Description
Technical Field
The utility model belongs to the technical field of the millimeter wave antenna, concretely relates to millimeter wave dual beam phased array antenna.
Background
With the improvement of new materials, new technologies and new processes, the technical problem of the millimeter wave frequency band integrated circuit element is rapidly overcome, and millimeter waves can be applied in a large scale. The millimeter wave active phased array antenna plays an important role in the fields of civil aviation and military exploration. In the field of satellite communication, compared with the traditional communication-in-motion antenna, the millimeter wave active phased array antenna has the advantages that a large-size servo tracking system is not arranged, the wave beam speed is high, the direction is controllable, the satellite can be tracked in real time, the weight is light, and mass production can be carried out; the millimeter wave active phased-array antenna does not contain movable parts, the reliability is excellent, even if a few antenna units in the array fail, the overall performance of the antenna cannot be influenced, and the terminal integrating the millimeter wave active phased-array antenna is one of important development directions of future millimeter wave satellite communication.
In the field of satellite communication, phased array satellite communication antennas are developing more slowly due to the limitations of special requirements of satellite terminal equipment and satellite communication systems. At present, the ground terminal antenna of our country usually adopts the traditional reflecting surface, the flat plate array or the phased array antenna with analog active, and the antennas play a great role in the establishment of satellite communication signals. However, the mainstream antenna technology only has a single beam in the aspect of analog beam integration, and is difficult to generate multiple beams, so that multiple satellite signals cannot be tracked simultaneously, which limits users. With the development of the satellite business of our country, the number of satellites is gradually increased, the establishment of a single satellite link in the past is gradually no longer adapted to the development requirement, and high requirements are put forward for multipoint simultaneous communication of satellite communication regardless of military use or civil use. The multi-beam phased array antenna realizes beam agility through electric scanning, can conveniently realize that one terminal device is communicated with a plurality of satellites (especially when the beams are exchanged with a low earth orbit satellite at a high speed), flexibly selects the beams through the satellite communication terminal device at the rear end, sets the beams to zero according to requirements, realizes seamless communication, and improves the anti-jamming capability and the communication quality.
The existing millimeter wave frequency band phased-array antenna mostly takes a single-beam antenna as a main antenna and cannot meet the requirement of multi-target tracking. Meanwhile, most of the bricks adopt a brick stacking type framework, so that the section is high and the cost is high. The technical scheme of the utility model is just for overcoming the innovative design that antenna beam produced singlely, the section is high and with high costs and proposed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving present and sweeping mostly the single beam based on PCB simulation integrated electricity, the signal of single beam is single, can't reach the problem of excellent performance, the reliability height that present satellite communication system required and can closely laminate the operation, has provided a millimeter wave dual-beam phased array antenna.
The technical scheme of the utility model is that: a millimeter wave dual-beam phased array antenna comprises a plurality of antenna units and a plurality of dual-beam phased array units;
four input ends of the dual-beam phased array unit are connected to the antenna unit; each dual-beam phased array unit outputs dual-branch beams.
Furthermore, each dual-beam phased array unit has the same structure and comprises a four-channel branch signal module, a first feed network and a second feed network;
the input end of each channel branch signal module is connected with an antenna unit; the first output end of each channel branch signal module is used as the input end of a first feed network, and the second output end of each channel branch signal module is used as the input end of a second feed network; the first feed network and the second feed network output dual-branch beams.
Furthermore, each signal channel branch in the four-channel branch signal module is the same and comprises an LNA, a first VGA, a second VGA, a first phase shifter and a second phase shifter;
in each channel branch signal module, an antenna unit is used as an input end of an LNA (low noise amplifier), and two output ends of the LNA are respectively in communication connection with the input end of a first VGA and the input end of a second VGA; the output end of the first VGA and the output end of the second VGA are respectively in communication connection with the input end of the first phase shifter and the input end of the second phase shifter; the output end of each first phase shifter is used as the input end of the first feed network; the output end of each second phase shifter is used as the input end of the second feed network.
The utility model has the advantages that: the millimeter wave dual-beam phased array antenna is wide in coverage range, the number of the tracked targets is increased, the coverage range is wider, and the advantages of power consumption and cost of the millimeter wave dual-beam phased array antenna are more obvious. The dual beams can realize rapid scanning detection, are suitable for satellite communication, land movement and marine application, such as multi-target detection of land guidance, electronic reconnaissance and the like, and can effectively deal with complex comprehensive electronic interference.
Drawings
Fig. 1 is a structural diagram of a millimeter wave dual beam phased array antenna.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Before describing specific embodiments of the present invention, in order to make the solution of the present invention more clear and complete, the definitions of the abbreviations and key terms appearing in the present invention will be explained first:
LNA: a low noise power amplifier;
VGA: an adjustable gain amplifier.
As shown in fig. 1, the present invention provides a millimeter wave dual beam phased array antenna, which comprises a plurality of antenna units and a plurality of dual beam phased array units;
four input ends of the dual-beam phased array unit are connected to the antenna unit; each dual-beam phased array unit outputs dual-branch beams.
In the embodiment of the present invention, as shown in fig. 1, each dual-beam phased array unit has the same structure, and includes a four-channel branch signal module, a first feed network, and a second feed network;
the input end of each channel branch signal module is connected with an antenna unit; the first output end of each channel branch signal module is used as the input end of a first feed network, and the second output end of each channel branch signal module is used as the input end of a second feed network; the first feed network and the second feed network output dual-branch beams.
In the embodiment of the present invention, as shown in fig. 1, each signal channel branch in the four-channel branch signal module is the same, and includes a LNA, a first VGA, a second VGA, a first phase shifter and a second phase shifter;
in each channel branch signal module, an antenna unit is used as an input end of an LNA (low noise amplifier), and two output ends of the LNA are respectively in communication connection with the input end of a first VGA and the input end of a second VGA; the output end of the first VGA and the output end of the second VGA are respectively in communication connection with the input end of the first phase shifter and the input end of the second phase shifter; the output end of each first phase shifter is used as the input end of the first feed network; the output end of each second phase shifter is used as the input end of the second feed network.
The embodiment of the utility model provides an in, utilize the compound lamination technique of PCB multilayer, rational planning stromatolite structure produces double-deck feed network in order to realize the integrated dual beam antenna of simulation. In a transmitting state, a radio frequency signal enters a multilayer PCB (printed circuit board), first power division is carried out through a feed network, the signal is divided into multiple paths of equal-power signals, then each path of signal enters a multi-channel amplitude-phase modulation chip, after second power division is completed in the chip, phase modulation and amplitude modulation and power amplification are completed in the chip through an adjustable gain amplifier VGA and a phase shifter, and finally the signals enter antenna units of all channels to complete signal transmission.
In a receiving state, millimeter wave signals pass through holes of a PCB (printed Circuit Board) and enter a chip along with adjustment of partial noise, the millimeter wave signals are divided into two parts through an antenna, the two parts of signals respectively enter a low noise power amplifier (LNA), the LNA amplifies the millimeter wave signals in low noise, and self-compensation is carried out on phase and amplitude changes of the signals through a phase shifter and a Variable Gain Amplifier (VGA), so that the maximum signal value is obtained finally. After each signal is divided into two, the branches corresponding to each path of signal are finally collected into one output, and the final double-branch wave beam is obtained.
The utility model discloses a theory of operation and process do: and performing power division and combination on signals in the dual-beam phased array unit, and obtaining appropriate signal values by performing independent amplitude modulation, phase modulation and amplification on branch signals of each channel. The internal structure of a single dual-beam phased array unit is four-channel eight-path input and two-path output, the four-channel eight-path input is combined in pairs and is connected to four Low Noise Amplifiers (LNA) to amplify millimeter wave signals in a low noise mode, self-compensation is carried out on the phase and amplitude changes of the signals through a phase shifter and a Variable Gain Amplifier (VGA), and the signals are combined through two feed networks respectively to form dual-beam signal output.
The utility model has the advantages that: the millimeter wave dual-beam phased array antenna is wide in coverage range, the number of the tracked targets is increased, the coverage range is wider, and the advantages of power consumption and cost of the millimeter wave dual-beam phased array antenna are more obvious. The dual beams can realize rapid scanning detection, are suitable for satellite communication, land movement and marine application, such as multi-target detection of land guidance, electronic reconnaissance and the like, and can effectively deal with complex comprehensive electronic interference.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.
Claims (3)
1. A millimeter wave dual-beam phased array antenna is characterized by comprising a plurality of antenna units and a plurality of dual-beam phased array units;
four input ends of the dual-beam phased array unit are connected to the antenna unit; each dual-beam phased array unit outputs dual-branch beams.
2. The millimeter wave dual beam phased array antenna of claim 1, wherein each of the dual beam phased array units is structurally identical and comprises a four channel branch signal module, a first feed network and a second feed network;
the input end of each channel branch signal module is connected with an antenna unit; the first output end of each channel branch signal module is used as the input end of a first feed network, and the second output end of each channel branch signal module is used as the input end of a second feed network; the first feed network and the second feed network output dual-branch beams.
3. The millimeter wave dual beam phased array antenna of claim 2, wherein each signal path branch in the four-path branch signal module is identical, comprising an LNA, a first VGA, a second VGA, a first phase shifter and a second phase shifter;
in each channel branch signal module, an antenna unit is used as an input end of an LNA (low noise amplifier), and two output ends of the LNA are respectively in communication connection with the input end of a first VGA and the input end of a second VGA; the output end of the first VGA and the output end of the second VGA are respectively in communication connection with the input end of the first phase shifter and the input end of the second phase shifter; the output end of each first phase shifter is used as the input end of a first feed network; and the output end of each second phase shifter is used as the input end of the second feed network.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120309874.0U CN214099927U (en) | 2021-02-03 | 2021-02-03 | Millimeter wave dual-beam phased array antenna |
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| CN202120309874.0U CN214099927U (en) | 2021-02-03 | 2021-02-03 | Millimeter wave dual-beam phased array antenna |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725717A (en) * | 2021-11-02 | 2021-11-30 | 浙江铖昌科技股份有限公司 | Two-dimensional lattice type multi-beam phased array and design method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113725717A (en) * | 2021-11-02 | 2021-11-30 | 浙江铖昌科技股份有限公司 | Two-dimensional lattice type multi-beam phased array and design method thereof |
| CN113725717B (en) * | 2021-11-02 | 2022-03-11 | 浙江铖昌科技股份有限公司 | Two-dimensional lattice type multi-beam phased array and design method thereof |
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