CN212255694U - Small-size distancer of high isolation - Google Patents
Small-size distancer of high isolation Download PDFInfo
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- CN212255694U CN212255694U CN201922445657.XU CN201922445657U CN212255694U CN 212255694 U CN212255694 U CN 212255694U CN 201922445657 U CN201922445657 U CN 201922445657U CN 212255694 U CN212255694 U CN 212255694U
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Abstract
The utility model discloses a high-isolation small-sized distance meter, which comprises a baseband module I, a radio frequency front-end module II and an antenna module III; the baseband module I is connected with the radio frequency front end module II, and the radio frequency front end module II is connected with the antenna module III. The utility model discloses work is in 1GHz ~ 2GHz working frequency channel, can arrange in the diameter for being less than or equal to 50mm, highly being less than or equal to 60 mm's space, including antenna, radio frequency front end, a whole set of ranging system such as baseband control has realized the beneficial effect of small volume, high isolation and high reliability.
Description
Technical Field
The utility model relates to a distancer technical field, more specifically relates to a small-size distancer of high isolation.
Background
In the existing electronic products of the ranging and communication system, along with the requirements of diversity of product functions and multi-band compatibility, the existing electronic products are more and more complex, more and more electronic components, functional modules and connecting wires are adopted, and the layout is more and more intensive, so that the product structure is more complex, the reliability is reduced, and the repair cost is increased.
As shown in fig. 1, the conventional fm continuous wave radar ranging architecture generally includes a frequency source, a Voltage Controlled Oscillator (VCO), a Mixer (Mixer), a Low Noise Amplifier (LNA), a Coupler (Coupler), a Power Amplifier (PA), an analog-to-digital converter (ADC), a signal processing module (DSP), an Antenna (Antenna), and other basic devices. The frequency modulation continuous wave signal is generated by a frequency source, the frequency modulation continuous wave signal reaches the required transmitting power through a power amplifier, then the main path signal is transmitted to a transmitting antenna by using a coupler, part of coupled energy is transmitted to a receiving system, the main path signal and the delayed echo signal of a detection target are converted into an intermediate frequency digital signal, and the intermediate frequency digital signal is processed by a subsequent digital signal platform to obtain target information. The difficulty of the system architecture is as follows: 1. isolation of the transmit and receive antennas. And 2, the miniaturization is difficult, and the like, and a structure with two antennas arranged separately is adopted in the framework shown in the figure, so that the transmitting and receiving antennas are far away from each other, and the transmitting and receiving isolation of a transmitting system and a receiving system is improved. However, in practical applications, it is a relatively large challenge to ensure the isolation between the transmitting and receiving links under the condition of limited volume.
In summary, it is difficult for the current ranging and ranging system to satisfy the requirements of small size and high isolation at the same time, and the isolation of the transceiving link is always an important consideration when designing the radar ranging system, wherein the most important part in the transceiving link is the connection mode between the antenna transceiving link and the antenna, and the like.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art not enough, provide a high isolation, small-size distancer, can work at 1GHz ~ 2GHz working frequency channel, can arrange in the diameter is less than or equal to 50mm, highly is less than or equal to in 60 mm's narrow and small space, including the antenna, the radio frequency front end, a whole set of ranging system such as baseband control has realized the beneficial effect of small volume, high isolation and high reliability.
The purpose of the utility model is realized through the following technical scheme:
a high-isolation small range finder comprises a baseband module I, a radio frequency front end module II, a circulator (15) and an antenna module III; the baseband module I is connected with the radio frequency front end module II, the radio frequency front end module II is connected with the circulator (15), and the circulator (15) is connected with the antenna module III.
Further, the baseband module I comprises a baseband signal processing module; the radio frequency front-end module II comprises a voltage-controlled oscillator, a low-pass filter, a power divider, a driving amplifier, a low-noise amplifier module, a local oscillation driving amplifier, a frequency mixer, an intermediate frequency filter, an intermediate frequency amplifier and a power supply module; the antenna module III comprises an antenna feed network and transmitting and receiving antennas;
the voltage-controlled oscillator is connected with the low-pass filter, the low-pass filter is connected with the power divider, the power divider is respectively connected with the driving amplifier and the local oscillator driving amplifier, the driving amplifier is connected with the input end of the circulator, the local oscillator driving amplifier is connected with the frequency mixer, the frequency mixer is connected with the intermediate frequency filter, the intermediate frequency filter is connected with the intermediate frequency amplifier, the first output end of the circulator is connected with the low-noise amplifier module, the output end of the low-noise amplifier module is connected with the frequency mixer, and the second output end of the circulator is connected with the antenna feed network. And the baseband signal processing module is respectively connected with the voltage-controlled oscillator, the power supply module and the intermediate frequency amplifier.
Further, the utility model provides an in the scheme, can realize transmission, receiving antenna through the circulator and keep apart, can realize 15 ~ 20 dB's isolation, the isolation that only 10dB was controlled than current receiving and dispatching integrative antenna has a big promotion, will show the range finding precision that promotes the distancer.
The utility model has the advantages that:
(1) the technical scheme of the utility model, will have through the circulator and receive, send out the isolation of integrative antenna and improve 5 ~ 10dB to can be less than or equal to 50mm in the diameter, highly be less than or equal to 60 mm's space in realized whole ranging system, adopt the circulator, the antenna is received, is sent out to the cooperation paster microstrip, has realized small-size, high isolation design, has reduced the volume, has improved reliability and practicality.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be 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 inventive exercise.
FIG. 1 is a schematic diagram of a conventional frequency modulated continuous wave radar architecture;
FIG. 2 is a block diagram of the ranging system of the present invention;
in the figure, 1-voltage-controlled oscillator, 2-low-pass filter, 3-power divider, 4-driving amplifier, 5-transmitting antenna, 6-receiving antenna, 7-low noise amplifier module, 8-local oscillator driving amplifier, 9-mixer, 10-intermediate frequency filter, 11-intermediate frequency amplifier, 12-power module, 13-baseband signal processing module, 14-antenna feed network and 15-circulator.
Detailed Description
The technical solution of the present invention is described in further detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description. Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
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 efforts belong to the protection scope of the present invention.
Before describing the embodiments, some necessary terms need to be explained. For example:
if the terms "first," "second," etc. are used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. Thus, a "first" element discussed below could also be termed a "second" element without departing from the teachings of the present invention. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. In contrast, when an element is referred to as being "directly connected" or "directly coupled" to another element, there are no intervening elements present.
The various terms appearing in this application are used for the purpose of describing particular embodiments only and are not intended as limitations on the invention, except where the context clearly dictates otherwise, the singular is intended to include the plural as well.
When the terms "comprises" and/or "comprising" are used in this specification, these terms are intended to specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence and/or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
As shown in fig. 1-2, a high-isolation small-sized distance meter includes a baseband module i, a radio frequency front-end module ii, a circulator and an antenna module iii; the baseband module I is connected with the radio frequency front end module II, the radio frequency front end module II is connected with the input end of the circulator 15, and the output end II of the circulator 15 is connected with the antenna module III.
Further, the baseband module i includes a baseband signal processing module 13; the radio frequency front-end module II comprises a voltage-controlled oscillator 1, a low-pass filter 2, a power divider 3, a driving amplifier 4, a low-noise amplifier module 7, a local oscillation driving amplifier 8, a frequency mixer 9, an intermediate frequency filter 10, an intermediate frequency amplifier 11 and a power supply module 12; the antenna module III comprises an antenna feed network 14, a receiving antenna 6 and a transmitting antenna 5;
the voltage-controlled oscillator 1 is connected with the low-pass filter 2, the low-pass filter 2 is connected with the power divider 3, the power divider 3 is respectively connected with the driving amplifier 4 and the local oscillator driving amplifier 8, the driving amplifier 4 is connected with the input end of the circulator 15, the local oscillator driving amplifier 8 is connected with the frequency mixer 9, the frequency mixer 9 is connected with the intermediate frequency filter 10, the intermediate frequency filter 10 is connected with the intermediate frequency amplifier 11, the first output end of the circulator 15 is connected with the low-noise amplifier module 7, the output end of the low-noise amplifier module 7 is connected with the frequency mixer 9, and the second output end of the circulator 15 is connected with the antenna feed network 14.
The antenna feed network is connected to a receive antenna 6 and a transmit antenna 5. The baseband signal processing module 13 is connected to the voltage-controlled oscillator 1, the power supply module 12 and the intermediate frequency amplifier 11 respectively.
Example 1
As shown in fig. 2, a person skilled in the art can implement the present invention as a high-isolation small-sized distance meter, in this embodiment, a baseband module i, a radio frequency front-end module ii, and an antenna module iii are provided; the baseband module I is connected with the radio frequency front end module II, and the radio frequency front end module II is connected with the antenna module III. The signal identification which is identified as the signal identification which needs to be transmitted for communication among the modules is divided into four sections, namely DC signals and RF signals (AC signals), wherein (1) the signals are generated by a baseband module and act on a voltage-controlled oscillator (1), and the signals generated by a driving amplifier (4) pass through a circulator (15) and act on an antenna module, and are transmitted to a low-noise amplifier (7); the antenna feed network 14 and the transmitting and receiving antenna 6 realize signal transceiving, and traditionally, the baseband part is mainly digital signals, and the radio frequency module is mainly high-frequency alternating current signals.
In other technical features in this embodiment, those skilled in the art can flexibly select the technical features according to actual situations to meet different specific actual requirements. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the invention. In other instances, well-known components, structures or parts are not described in detail in order to avoid obscuring the present invention, and the technical scope of the present invention is defined by the claims.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are used in a generic sense as is understood by those skilled in the art. For example, the components may be fixedly connected, movably connected, integrally connected, or partially connected, mechanically connected, electrically connected, directly connected, indirectly connected through an intermediate medium, or connected inside two elements, and the like, and for those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations, that is, the expression of the language and the implementation of the actual technology can flexibly correspond, and the expression of the language (including the drawings) of the specification of the present invention does not constitute any single restrictive interpretation of the claims.
Modifications and variations may be made by those skilled in the art without departing from the spirit and scope of the invention, which should be limited only by the claims appended hereto. In the previous description, numerous specific details were set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the invention. In other instances, well-known techniques, such as specific construction details, operating conditions, and other technical conditions, have not been described in detail in order to avoid obscuring the present invention.
Claims (2)
1. A high-isolation small-sized distance meter is characterized by comprising a baseband module (I), a radio frequency front end module (II), a circulator and an antenna module (III); the base band module (I) is connected with the radio frequency front end module (II), the radio frequency front end module (II) is connected with the input end of the circulator (15), and the output end of the circulator (15) is connected with the antenna module (III).
2. The small range finder with high isolation of claim 1,
the baseband module (I) comprises a baseband signal processing module (13); the radio frequency front-end module (II) comprises a voltage-controlled oscillator (1), a low-pass filter (2), a power divider (3), a drive amplifier (4), a low-noise amplifier module (7), a local oscillator drive amplifier (8), a frequency mixer (9), an intermediate frequency filter (10), an intermediate frequency amplifier (11) and a power module (12); the antenna module (III) comprises an antenna feed network (14), a receiving antenna (6) and a transmitting antenna (5);
the voltage-controlled oscillator (1) is connected with a low-pass filter (2), the low-pass filter (2) is connected with a power divider (3), the power divider (3) is respectively connected with a drive amplifier (4) and a local oscillator drive amplifier (8), the drive amplifier (4) is connected with the input end of a circulator (15), the local oscillator drive amplifier (8) is connected with a mixer (9), the mixer (9) is connected with an intermediate frequency filter (10), the intermediate frequency filter (10) is connected with an intermediate frequency amplifier (11), a first output end of the circulator (15) is connected with a low-noise amplifier module (7), an output end of the low-noise amplifier module (7) is connected with the mixer (9), and a second output end of the circulator (15) is connected with an antenna feed network (14);
the antenna feed network is connected with the receiving antenna (6) and the transmitting antenna (5);
the baseband signal processing module (13) is respectively connected with the voltage-controlled oscillator (1), the power supply module (12) and the intermediate frequency amplifier (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922445657.XU CN212255694U (en) | 2019-12-30 | 2019-12-30 | Small-size distancer of high isolation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922445657.XU CN212255694U (en) | 2019-12-30 | 2019-12-30 | Small-size distancer of high isolation |
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| Publication Number | Publication Date |
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| CN212255694U true CN212255694U (en) | 2020-12-29 |
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| CN201922445657.XU Active CN212255694U (en) | 2019-12-30 | 2019-12-30 | Small-size distancer of high isolation |
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| CN (1) | CN212255694U (en) |
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- 2019-12-30 CN CN201922445657.XU patent/CN212255694U/en active Active
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