CN215010173U - Frequency multiplier - Google Patents
Frequency multiplier Download PDFInfo
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- CN215010173U CN215010173U CN202121428200.9U CN202121428200U CN215010173U CN 215010173 U CN215010173 U CN 215010173U CN 202121428200 U CN202121428200 U CN 202121428200U CN 215010173 U CN215010173 U CN 215010173U
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Abstract
The utility model discloses a frequency multiplier, include: the metal shielding cavity comprises a microstrip transmission cavity and a radio-frequency signal transmission waveguide cavity communicated with the microstrip transmission cavity, wherein the microstrip transmission cavity is of a linear structure, and the radio-frequency signal transmission waveguide cavity is of a semi-circular arc structure; the microstrip circuit structure is arranged in the metal shielding cavity and comprises an input through microstrip line, a matching circuit connected with the input through microstrip line, a U-band radio frequency output probe connected with the matching circuit, and a Schottky diode arranged on a microstrip sheet between the matching circuit and the U-band radio frequency output probe. The radio-frequency signal transmission waveguide cavity is of a semi-circular structure, so that the whole structure of the device is miniaturized on the premise of ensuring the performance of a frequency multiplier, and the device can be suitable for being used in more occasions.
Description
Technical Field
The utility model relates to a millimeter wave communication equipment especially relates to a U wave band frequency tripler.
Background
A circuit for the frequency multiplier to make the output signal frequency equal to an integer multiple of the input signal frequency. If the input frequency is f1, the output frequency is f0 ═ nf 1, and the coefficient n is an arbitrary positive integer, called the frequency multiplication. The frequency multiplier has wide application, for example, after the frequency multiplier is adopted by the transmitter, the main oscillator can oscillate at lower frequency so as to improve the frequency stability; the frequency modulation device increases frequency offset by a frequency multiplier; in a phase-keying communication machine, a frequency multiplier is an important component of a carrier recovery circuit. The internal connection of the existing frequency multiplier is complex, and harmonic suppression cannot be well realized.
Disclosure of Invention
In order to overcome the defects in the prior art, the embodiment of the utility model provides a frequency multiplier, this frequency multiplier simple structure, compactness, whole size is more small and exquisite, can satisfy the use of more occasions.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a frequency multiplier, comprising:
the metal shielding cavity comprises a microstrip transmission cavity and a radio-frequency signal transmission waveguide cavity communicated with the microstrip transmission cavity, wherein the microstrip transmission cavity is of a linear structure, and the radio-frequency signal transmission waveguide cavity is of a semi-circular arc structure;
the microstrip circuit structure is arranged in the metal shielding cavity and comprises an input through microstrip line, a matching circuit connected with the input through microstrip line, a U-band radio frequency output probe connected with the matching circuit, and a Schottky diode arranged on a microstrip sheet between the matching circuit and the U-band radio frequency output probe.
In the above technical solution, a positioning point is disposed at one end of the microstrip transmission cavity facing the radio frequency signal transmission waveguide cavity, and the positioning point is used for positioning and assembling the microstrip transmission cavity and the radio frequency signal transmission waveguide cavity.
In the above technical solution, the two schottky diodes are included, and the two schottky diodes are connected in parallel to the microstrip patch in an inverse manner.
In the above technical solution, the matching circuit is a 10-20GHz low-pass filtering matching circuit.
In the above technical scheme, the microwave signal transmission device further comprises a quartz medium substrate arranged in the microstrip transmission cavity and having one end extending into the radio frequency signal transmission waveguide cavity, wherein the thickness of the quartz medium substrate is 127 μm, and the microstrip circuit structure is printed on the front surface and the back surface of the quartz medium substrate.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. the utility model discloses a 10-20GHz low pass filter matching circuit and the fine realization of U wave band radio frequency output probe schottky diode between input and output match. And two Schottky diodes are reversely connected on the microstrip piece in parallel, and the characteristics of the Schottky diodes ensure that odd harmonics can be generated, so that better harmonic suppression is realized.
2. The radio-frequency signal transmission waveguide cavity is arranged to be of a semi-circular arc structure, so that the whole structure of the device is miniaturized on the premise of ensuring the performance of a frequency multiplier, and the device can be suitable for being used in more occasions.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of the frequency multiplier of the present invention.
Reference numerals of the above figures: 1. an input straight-through microstrip line; 2. a matching circuit; 3. a Schottky diode; 4. a U-band radio frequency output probe; 5. positioning points; 6. a radio frequency signal transmission waveguide cavity; 7. a microstrip transmission cavity.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The first embodiment is as follows: referring to fig. 1, a frequency multiplier includes:
the metal shielding cavity comprises a microstrip transmission cavity 7 and a radio-frequency signal transmission waveguide cavity 6 communicated with the microstrip transmission cavity 7, wherein the microstrip transmission cavity 7 is in a linear structure, and the radio-frequency signal transmission waveguide cavity 6 has a semi-arc structure;
the metal shielding cavity is internally provided with a microstrip circuit structure, the microstrip circuit structure comprises an input through microstrip line 1, a matching circuit 2 connected with the input through microstrip line 1, a U-band radio frequency output probe 4 connected with the matching circuit 2, and a Schottky diode 3 arranged on a microstrip sheet between the matching circuit 2 and the U-band radio frequency output probe 4.
The radio frequency signal transmission waveguide cavity 6 is configured to have a semi-circular arc structure. Preferably, the radius in the semi-circular arc structure is increased to avoid changing the phase of the output signal. The structural design ensures that the whole structure of the device is miniaturized on the premise of ensuring the performance of the frequency multiplier, and can adapt to the use of more occasions.
In order to improve the assembly efficiency and ensure the performance of the assembled product, a positioning point 5 is arranged at one end of the microstrip transmission cavity 7 facing the radio-frequency signal transmission waveguide cavity 6, and the positioning point 5 is used for positioning and assembling the microstrip transmission cavity 7 and the radio-frequency signal transmission waveguide cavity 6.
Referring to fig. 1, the microstrip circuit structure includes two schottky diodes 3, and the two schottky diodes 3 are connected in parallel to the microstrip patch in an inverse manner. Ensures that odd harmonics can be generated through the characteristics of the harmonic suppression device, and realizes better harmonic suppression
The matching circuit 2 is a 10-20GHz low-pass filtering matching circuit 2. The matching of the Schottky diode 3 between input and output is well realized through the 10-20GHz low-pass filtering matching circuit 2 and the U-band radio frequency output probe 4.
The microwave signal transmission device further comprises a quartz medium substrate which is arranged in the microstrip transmission cavity 7, one end of the quartz medium substrate extends into the radio frequency signal transmission waveguide cavity 6, the thickness of the quartz medium substrate is 127 micrometers, and the microstrip circuit structure is printed on the front side and the back side of the quartz medium substrate.
The present invention has been explained by using specific embodiments, and the explanation of the above embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (5)
1. A frequency multiplier, comprising:
the metal shielding cavity comprises a microstrip transmission cavity and a radio-frequency signal transmission waveguide cavity communicated with the microstrip transmission cavity, wherein the microstrip transmission cavity is of a linear structure, and the radio-frequency signal transmission waveguide cavity is of a semi-circular arc structure;
the microstrip circuit structure is arranged in the metal shielding cavity and comprises an input through microstrip line, a matching circuit connected with the input through microstrip line, a U-band radio frequency output probe connected with the matching circuit, and a Schottky diode arranged on a microstrip sheet between the matching circuit and the U-band radio frequency output probe.
2. The frequency multiplier of claim 1, wherein: and one end of the microstrip transmission cavity facing the radio-frequency signal transmission waveguide cavity is provided with a positioning point, and the positioning point is used for positioning and assembling the microstrip transmission cavity and the radio-frequency signal transmission waveguide cavity.
3. The frequency multiplier of claim 1, wherein: the Schottky diode structure comprises two Schottky diodes, wherein the two Schottky diodes are reversely connected on the microstrip sheet in parallel.
4. The frequency multiplier of claim 1, wherein: the matching circuit is a 10-20GHz low-pass filtering matching circuit.
5. The frequency multiplier of claim 1, wherein: the microwave antenna further comprises a quartz medium substrate arranged in the microstrip transmission cavity, one end of the quartz medium substrate extends into the radio frequency signal transmission waveguide cavity, the thickness of the quartz medium substrate is 127 micrometers, and the microstrip circuit structure is printed on the front surface and the back surface of the quartz medium substrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121428200.9U CN215010173U (en) | 2021-06-25 | 2021-06-25 | Frequency multiplier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121428200.9U CN215010173U (en) | 2021-06-25 | 2021-06-25 | Frequency multiplier |
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| Publication Number | Publication Date |
|---|---|
| CN215010173U true CN215010173U (en) | 2021-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121428200.9U Active CN215010173U (en) | 2021-06-25 | 2021-06-25 | Frequency multiplier |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114665823A (en) * | 2022-02-28 | 2022-06-24 | 电子科技大学 | Return-wave terahertz frequency tripling circuit structure |
-
2021
- 2021-06-25 CN CN202121428200.9U patent/CN215010173U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114665823A (en) * | 2022-02-28 | 2022-06-24 | 电子科技大学 | Return-wave terahertz frequency tripling circuit structure |
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