CN206850734U - A kind of match circuit sampling apparatus - Google Patents
A kind of match circuit sampling apparatus Download PDFInfo
- Publication number
- CN206850734U CN206850734U CN201720591091.XU CN201720591091U CN206850734U CN 206850734 U CN206850734 U CN 206850734U CN 201720591091 U CN201720591091 U CN 201720591091U CN 206850734 U CN206850734 U CN 206850734U
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- CN
- China
- Prior art keywords
- electric capacity
- antenna
- circuit
- matching
- inductance
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
Wireless communication technology field, more particularly to a kind of match circuit sampling apparatus are the utility model is related to, including：Antenna-matching circuit, signal sample circuit.Advantage：By carrying out effective sampling detection to antenna-matching circuit, the energy of antenna is preferably radiate, ensure that power amplifier is in normal working condition, reduce loss of the detection to power.
Description
Technical field
It the utility model is related to wireless communication technology field, more particularly to a kind of match circuit sampling apparatus.
Background technology
Impedance matching is a kind of working condition common in radiotechnics, it reflect defeated people's circuit and output circuit it
Between power transmission relation.When circuit realiration impedance matching, maximum power transmission will be obtained.Conversely, when circuit impedance is lost
Timing, it not only cannot get maximum power transmission, it is also possible to which infringement is produced to circuit.The input and output impedance of wireless transceiver with
The impedance of the impedance of transmission line, transmission line and antenna should reach consistent.If impedance value is inconsistent, the high-frequency energy of transceiver output
Amount will be consumed largely in loop is transmitted, it is impossible to all by transmission line until antenna is launched.Do not send out this part
The energy being shot out can be reflected, and produce standing wave, and the insulating barrier and transceiver final stage power amplifier pipe of feeder line can be caused when serious
Damage.In order that signal and energy efficient transmission, it is necessary to circuit is operated in impedance matching condition, i.e. signal source or power source
Internal resistance be equal to defeated people's impedance of circuit, the output impedance of circuit is equal to the impedance of load.Thus, it is also necessary to match circuit is entered
Row sample detecting, see whether that meeting matching requires.
The modulation amplitude of carrier wave can not be too big in radio-frequency power detection process, otherwise will reduce the level of reception signal
Influence input.In in general detecting circuit, during using filter capacitor to be filtered, when filtering capacitance, effect is preferable, but
Capacitance can not be set too greatly, otherwise will be bypassed more radio-frequency carrier signal, be reduced the transmission power of radio frequency.Thus, need
Detecting circuit of good performance is wanted to be used in radio frequency matching circuit.
Utility model content
The utility model in view of the shortcomings of the prior art, proposes a kind of match circuit sampling apparatus, can be to antenna match electricity
Road carries out effective sampling detection, reduces loss of the detection to power.
To achieve the above object, the utility model adopts the following technical scheme that：A kind of match circuit sampling apparatus, bag
Include：
Antenna-matching circuit：For carrying out impedance matching with antenna；
Signal sample circuit：For sampling radiofrequency signal from antenna-matching circuit；
The antenna-matching circuit includes first antenna match circuit and the second antenna-matching circuit, the first antenna
Electrically connected with circuit with the second antenna-matching circuit, the of the signal sample circuit input port and first antenna match circuit
Single port electrically connects.
Preferably, the signal sample circuit includes partiting dc capacitor, detector diode, voltage follower and integration electricity
Road, the integrating circuit are composed in parallel by the 8th electric capacity (C8), first resistor (R1)；The electric capacity (C7) of partiting dc capacitor the 7th
Electrically connected with detector diode, the detector diode electrically connects with triode BC856 base stage, the first resistor (R1) with
Sys node one end ground connection of 8th electric capacity (C8), the other end electrically connect with triode BC856 emitter stage.
Preferably, the partiting dc capacitor uses low value capacitance, for sampled signal and isolated antennas match circuit.
Preferably, the detector diode is HSMS-2822.
Preferably, the first antenna match circuit is PI type LC match circuits, including the first electric capacity (C1), the first inductance
(L1), the second electric capacity (C2), the 3rd electric capacity (C3), the first electric capacity (C1) one end ground connection, the other end and the first inductance (L1),
Second electric capacity (C2), signal sample circuit input port and the electrical connection of rf inputs mouth, the 3rd electric capacity (C3) one terminate
Ground, the other end electrically connect with the first inductance (L1), the second electric capacity (C2) and the second antenna-matching circuit.
Preferably, second antenna-matching circuit is PI type LC match circuits, including the 4th electric capacity (C4), the second inductance
(L2), the 5th electric capacity (C5), the 6th electric capacity (C6)；4th electric capacity (C4) one end ground connection, the other end and the second inductance (L2),
The second port of 5th electric capacity (C5) and first antenna match circuit electrically connects；6th electric capacity (C6) one end ground connection is another
End electrically connects with the second inductance (L2), the 5th electric capacity (C5) and antenna port.
The beneficial effects of the utility model：Match circuit sampling apparatus of the present utility model, by antenna-matching circuit
Effective sampling detection is carried out, the energy of antenna is preferably radiate, ensure that power amplifier is in normal work
State, reduce loss of the detection to power.
Brief description of the drawings
With accompanying drawing, the utility model is described in further detail, but the embodiment in accompanying drawing is not formed to of the present utility model
What is limited.
Fig. 1 is the example structure schematic diagram of the utility model match circuit sampling apparatus one.
Fig. 2 is the utility model match circuit sampling apparatus above-described embodiment physical circuit figure.
Embodiment
The utility model is further described with embodiment below in conjunction with the accompanying drawings, this is of the present utility model preferably real
Apply example.
As shown in Figure 1, 2, a kind of match circuit sampling apparatus of the present utility model, including：Antenna-matching circuit, signal are adopted
Sample circuit, antenna-matching circuit include first antenna match circuit and the second antenna-matching circuit, first antenna match circuit with
Second antenna-matching circuit electrically connects, and the first port of signal sample circuit input port and first antenna match circuit is electrically connected
Connect.
First antenna match circuit is PI type LC match circuits, for carrying out impedance matching with antenna and implementing signal filter
Ripple, including the first electric capacity (C1), the first inductance (L1), the second electric capacity (C2), the 3rd electric capacity (C3), the first electric capacity (C1) one terminate
Ground, the other end are electrically connected with the first inductance (L1), the second electric capacity (C2), signal sample circuit input port and rf inputs mouth
Connect, the 3rd electric capacity (C3) one end ground connection, the other end and the first inductance (L1), the second electric capacity (C2) and the second antenna-matching circuit electricity
Connection.
Second antenna-matching circuit is PI type LC match circuits, for carrying out impedance matching with antenna and implementing signal filter
Ripple, including the 4th electric capacity (C4), the second inductance (L2), the 5th electric capacity (C5), the 6th electric capacity (C6)；4th electric capacity (C4) one terminates
Ground, the other end electrically connect with the second port of the second inductance (L2), the 5th electric capacity (C5) and first antenna match circuit；6th electricity
Hold (C6) one end ground connection, the other end electrically connects with the second inductance (L2), the 5th electric capacity (C5) and antenna port.
Signal sample circuit includes partiting dc capacitor, detector diode, voltage follower and integrating circuit, integrating circuit by
8th electric capacity (C8), first resistor (R1) compose in parallel；The electric capacity (C7) of partiting dc capacitor the 7th electrically connects with detector diode, inspection
Ripple diode electrically connects with triode BC856 base stage, and first resistor (R1) and the sys node one of the 8th electric capacity (C8) terminate
Ground, the other end electrically connect with triode BC856 emitter stage.Wherein, partiting dc capacitor uses low value capacitance, for sampled signal
And isolated antennas match circuit.
In this implementation column, detector diode HSMS-2822.
Finally it should be noted that：Various embodiments above is only to illustrate the technical solution of the utility model, rather than it is limited
System；Although the utility model is described in detail with reference to foregoing embodiments, one of ordinary skill in the art should
Understand：It can still modify to the technical scheme described in foregoing embodiments, either to which part or whole
Technical characteristic carries out equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from this practicality newly
The scope of each embodiment technical scheme of type.
Claims (6)
- A kind of 1. match circuit sampling apparatus, it is characterised in that including：Antenna-matching circuit：For carrying out impedance matching with antenna；Signal sample circuit：For sampling radiofrequency signal from antenna-matching circuit；The antenna-matching circuit includes first antenna match circuit and the second antenna-matching circuit, the first antenna matching electricity Road electrically connects with the second antenna-matching circuit, the first end of the signal sample circuit input port and first antenna match circuit Mouth electrical connection.
- 2. device according to claim 1, it is characterised in that the signal sample circuit includes partiting dc capacitor, detection Diode, voltage follower and integrating circuit, the integrating circuit are composed in parallel by the 8th electric capacity (C8), first resistor (R1)； The electric capacity (C7) of partiting dc capacitor the 7th electrically connects with detector diode, the base of the detector diode and triode BC856 Pole is electrically connected, and the first resistor (R1) and sys node one end of the 8th electric capacity (C8) are grounded, the other end and triode BC856 Emitter stage electrical connection.
- 3. device according to claim 2, it is characterised in that the partiting dc capacitor uses low value capacitance, for sampling Signal and isolated antennas match circuit.
- 4. device according to claim 2, it is characterised in that the detector diode is HSMS-2822.
- 5. according to any described devices of claim 1-4, it is characterised in that the first antenna match circuit is LC, PI types With circuit, including the first electric capacity (C1), the first inductance (L1), the second electric capacity (C2), the 3rd electric capacity (C3), first electric capacity (C1) one end is grounded, and the other end and the first inductance (L1), the second electric capacity (C2), signal sample circuit input port and radio frequency input Port electrically connects, the 3rd electric capacity (C3) one end ground connection, the other end and the first inductance (L1), the second electric capacity (C2) and second day Lines matching circuit electrically connects.
- 6. device according to claim 5, it is characterised in that second antenna-matching circuit is PI types LC matching electricity Road, including the 4th electric capacity (C4), the second inductance (L2), the 5th electric capacity (C5), the 6th electric capacity (C6)；4th electric capacity (C4) one End ground connection, the other end electrically connect with the second port of the second inductance (L2), the 5th electric capacity (C5) and first antenna match circuit；Institute The 6th electric capacity (C6) one end ground connection is stated, the other end electrically connects with the second inductance (L2), the 5th electric capacity (C5) and antenna port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720591091.XU CN206850734U (en) | 2017-05-24 | 2017-05-24 | A kind of match circuit sampling apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720591091.XU CN206850734U (en) | 2017-05-24 | 2017-05-24 | A kind of match circuit sampling apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206850734U true CN206850734U (en) | 2018-01-05 |
Family
ID=60797970
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720591091.XU Expired - Fee Related CN206850734U (en) | 2017-05-24 | 2017-05-24 | A kind of match circuit sampling apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206850734U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113702722A (en) * | 2021-10-28 | 2021-11-26 | 成都雷电微力科技股份有限公司 | TR assembly multistage link fault detection structure and method |
-
2017
- 2017-05-24 CN CN201720591091.XU patent/CN206850734U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113702722A (en) * | 2021-10-28 | 2021-11-26 | 成都雷电微力科技股份有限公司 | TR assembly multistage link fault detection structure and method |
| CN113702722B (en) * | 2021-10-28 | 2022-01-25 | 成都雷电微力科技股份有限公司 | TR assembly multistage link fault detection structure and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180105 Termination date: 20180524 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |