CN211236229U - Microwave chip radar - Google Patents
Microwave chip radar Download PDFInfo
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- CN211236229U CN211236229U CN201922119217.5U CN201922119217U CN211236229U CN 211236229 U CN211236229 U CN 211236229U CN 201922119217 U CN201922119217 U CN 201922119217U CN 211236229 U CN211236229 U CN 211236229U
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- radio frequency
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Abstract
A microwave chip radar relates to the technical field of radars and solves the technical problem that the existing chip radar is large in packaging size. The radar comprises a packaging body and at least one chip unit packaged in the packaging body, wherein the chip unit comprises a microwave antenna, a radio frequency circulator and at least one bare chip carrying a radar circuit; a pin for connecting a radar circuit on the bare chip is fixed on the outer surface of the packaging body; the first end pin of the radio frequency circulator is connected to a radio frequency signal transmitting end of the radar circuit, the second end pin of the radio frequency circulator is connected to the microwave antenna, and the third end pin of the radio frequency circulator is connected to a radio frequency signal receiving end of the radar circuit. The utility model provides a microwave chip radar has the little characteristics of encapsulation size.
Description
Technical Field
The utility model relates to a radar technology especially relates to a technique of microwave chip radar.
Background
Because microwaves, particularly millimeter wave frequency bands, have higher available bandwidth and higher detection precision, microwave chips with high integration level are widely applied in various aspects such as wireless communication, radar, guidance, remote sensing technology, radio astronomy, electronic countermeasure and the like, and along with the continuous opening of the millimeter wave frequency bands, microwave radars with the microwave and millimeter wave chips as cores are widely applied.
When present microwave chip radar encapsulation, need settle two antennas in the packaging body, one of them is used for the received signal, and another is used for the transmitted signal, and two antennas need occupy a large amount of spaces to lead to the encapsulation size of present microwave chip radar all great, especially need use array antenna's radar at some, can't realize the miniaturization.
SUMMERY OF THE UTILITY MODEL
To the defect that exists among the above-mentioned prior art, the utility model aims to solve the technical problem that a microwave chip radar that encapsulation size is little is provided.
In order to solve the technical problem, the utility model provides a microwave chip radar, including the packaging body, and the at least one chip unit of packaging in the packaging body, its characterized in that: the chip unit comprises a microwave antenna, a radio frequency circulator and at least one bare chip carrying a radar circuit;
the three radio frequency end feet of the radio frequency circulator are respectively a first end foot, a second end foot and a third end foot, and the transmission direction of the radio frequency circulator is as follows: the first terminal pin is conducted in a one-way towards the second terminal pin, and the second terminal pin is conducted in a one-way towards the third terminal pin;
a pin for connecting a radar circuit on the bare chip is fixed on the outer surface of the packaging body; the first end pin of the radio frequency circulator is connected to a radio frequency signal transmitting end of the radar circuit, the second end pin of the radio frequency circulator is connected to the microwave antenna, and the third end pin of the radio frequency circulator is connected to a radio frequency signal receiving end of the radar circuit.
Furthermore, the radar circuit comprises a radio frequency mixer, a radio frequency low noise amplifier, a radio frequency power amplifier, a power distribution and synthesis circuit, a radio frequency phase shifter, a radio frequency source, an intermediate frequency processing circuit and a radar digital processing circuit.
The utility model provides a microwave chip radar has set up the radio frequency circulator in the packaging body for the receiving and the transmission of radar circuit can share an antenna, and the chip radar that has relatively reduced antenna quantity, its encapsulation size will be less than current chip radar.
Drawings
Fig. 1 is a microwave chip radar according to a first embodiment of the present invention;
fig. 2 shows a microwave chip radar according to a second embodiment of the present invention.
Detailed Description
The following description is provided for further details of the embodiments of the present invention with reference to the accompanying drawings, but this embodiment is not intended to limit the present invention, and all similar structures and similar variations thereof adopted by the present invention should be included in the protection scope of the present invention.
As shown in fig. 1, the utility model discloses a microwave chip radar that first embodiment provided, including packaging body 11, and the chip unit of encapsulation in packaging body 11, its characterized in that: the chip unit comprises a microwave antenna 14, a radio frequency circulator 13 and a bare chip 12 loaded with a radar circuit;
three radio frequency terminal pins of the radio frequency circulator 13 are respectively a first terminal pin, a second terminal pin and a third terminal pin, and the transmission direction of the radio frequency circulator 13 is as follows: the first terminal pin is conducted in a one-way towards the second terminal pin, and the second terminal pin is conducted in a one-way towards the third terminal pin;
a pin 15 for connecting a radar circuit on the bare chip 12 is fixed on the outer surface of the package 11; a first terminal pin of the radio frequency circulator 13 is connected to a radio frequency signal transmitting terminal of the radar circuit, a second terminal pin of the radio frequency circulator 13 is connected to the microwave antenna 14, and a third terminal pin of the radio frequency circulator 13 is connected to a radio frequency signal receiving terminal of the radar circuit.
The utility model discloses in the first embodiment, radar circuit is prior art, and radar circuit includes radio frequency mixer, radio frequency low noise amplifier, radio frequency power amplifier, power distribution and synthetic circuit, radio frequency phase shifter, radio frequency source, intermediate frequency processing circuit, radar digital processing circuit, microwave antenna is used for launching and receiving the electromagnetic wave, the pin of encapsulation body surface can adopt various forms that can draw forth the signal such as metal solder ball, metal stitch, metal leg.
The utility model discloses in the first embodiment, chip unit in the packaging body can have a plurality ofly, and each chip unit can the autonomous working, also can the collaborative work.
The utility model discloses the theory of operation of first embodiment as follows:
due to the one-way conduction characteristic of the radio frequency circulator, the transmitting and receiving signals of the radar circuit can be isolated from each other; a signal sent by the radar circuit sequentially passes through a first end pin and a second end pin of the radio frequency circulator to reach the microwave antenna, and is emitted by the microwave antenna; and the signal received by the microwave antenna sequentially passes through the second end pin and the third end pin of the radio frequency circulator to reach a radio frequency signal receiving end of the radar circuit and enters the radar circuit.
As shown in fig. 2, the second embodiment of the present invention is different from the first embodiment in that: the chip unit in the second embodiment includes a microwave antenna 24, a radio frequency circulator 23, and a plurality of bare chips 22 loaded with radar circuits, and the radar circuits are distributed in each bare chip 22;
in the second embodiment of the present invention, the chip units in the package body 21 may also be multiple, and each chip unit may work independently or cooperatively.
Claims (2)
1. The utility model provides a microwave chip radar, includes the packaging body, and encapsulates at least one chip unit in the packaging body, its characterized in that: the chip unit comprises a microwave antenna, a radio frequency circulator and at least one bare chip carrying a radar circuit;
the three radio frequency end feet of the radio frequency circulator are respectively a first end foot, a second end foot and a third end foot, and the transmission direction of the radio frequency circulator is as follows: the first terminal pin is conducted in a one-way towards the second terminal pin, and the second terminal pin is conducted in a one-way towards the third terminal pin;
a pin for connecting a radar circuit on the bare chip is fixed on the outer surface of the packaging body; the first end pin of the radio frequency circulator is connected to a radio frequency signal transmitting end of the radar circuit, the second end pin of the radio frequency circulator is connected to the microwave antenna, and the third end pin of the radio frequency circulator is connected to a radio frequency signal receiving end of the radar circuit.
2. A microwave chip radar according to claim 1, wherein: the radar circuit comprises a radio frequency mixer, a radio frequency low noise amplifier, a radio frequency power amplifier, a power distribution and synthesis circuit, a radio frequency phase shifter, a radio frequency source, an intermediate frequency processing circuit and a radar digital processing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922119217.5U CN211236229U (en) | 2019-12-02 | 2019-12-02 | Microwave chip radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922119217.5U CN211236229U (en) | 2019-12-02 | 2019-12-02 | Microwave chip radar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211236229U true CN211236229U (en) | 2020-08-11 |
Family
ID=71926828
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922119217.5U Active CN211236229U (en) | 2019-12-02 | 2019-12-02 | Microwave chip radar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211236229U (en) |
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2019
- 2019-12-02 CN CN201922119217.5U patent/CN211236229U/en active Active
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