CN207099057U - A kind of RF signal switch switching circuit - Google Patents
A kind of RF signal switch switching circuit Download PDFInfo
- Publication number
- CN207099057U CN207099057U CN201720732520.0U CN201720732520U CN207099057U CN 207099057 U CN207099057 U CN 207099057U CN 201720732520 U CN201720732520 U CN 201720732520U CN 207099057 U CN207099057 U CN 207099057U
- Authority
- CN
- China
- Prior art keywords
- pin
- electric capacity
- switch
- ground connection
- resistance
- Prior art date
- 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.)
- Active
Links
Landscapes
- Transmitters (AREA)
Abstract
A kind of RF signal switch switching circuit is the utility model is related to, including switch switching circuit, Switch Control circuit, switch switching circuit are connected with Switch Control circuit；The characteristics of the utility model is：The power that the circuit can independently detect radiofrequency signal all the way carries out switch switching, and the sensitivity of radiofrequency signal recognition is higher, reaches 90dBm weak degrees, solves the problems, such as that conventional circuit sensitivity is low.This circuit is independently detected by the power of radiofrequency signal is used as the foundation for judging that RF signal switch switches, and whether there is and selected significant for the weak radiofrequency signal of identification, improves the Autonomous test ability of radiofrequency signal.
Description
Technical field
It the utility model is related to a kind of RF signal switch switching circuit, the radio frequency electrical for anti-interference antenna of satellite navigation
Lu Zhong.
Background technology
Missile-borne anti-interference antenna of satellite navigation should can received by itself satellite-signal positioned, airborne day can be received again
The satellite-signal that line receives is positioned, therefore the general circuit that can all have combining form in missile-borne anti-interference antenna of satellite navigation
Or the circuit of switch switch forms.Switch switching circuit has the advantages of isolation is high, and Insertion Loss is small.Switch switching circuit before
The sensitivity of reception antenna signal is not high, and power, which is more than or equal to more than -40dBm, could identify and switch, but actually airborne day
The satellite-signal that line receives is less than -40dBm.Therefore a kind of higher switch switching circuit of sensitivity is needed.
The content of the invention
In view of the shortcomings of the prior art, the utility model provides a kind of RF signal switch switching circuit, the electricity
The power that road can independently detect radiofrequency signal all the way carries out switch switching, and the sensitivity of radiofrequency signal recognition is higher, when
The power of radiofrequency signal<Circuit uses a branch road radiofrequency signal during -90dBm；The circuit as power >=-90dBm of radiofrequency signal
Independently it is switched to two branch road radiofrequency signals.
The utility model to achieve the above object, is adopted the technical scheme that：A kind of RF signal switch switching circuit,
It is characterized in that：Including switch switching circuit, Switch Control circuit, the switch switching circuit and Switch Control electricity
Road connects；
Switch switching circuit is connected as：
An electric capacity C5 termination radiofrequency signal 2, electric capacity C5 another termination amplifier N2 4 pin, amplifier N2 2 pin, 3
Pin is grounded, and amplifier N2 1 pin connects inductance L1, electric capacity C6 one end respectively, and the inductance L1 other end connects electric capacity C3, resistance respectively
R1 one end, resistance R1 another termination+5V power supplys, electric capacity C3 other end ground connection, electric capacity C6 another termination power splitter U1
2 pin, power splitter U1 1 pin, 3 pin, 4 pin, 5 pin, 6 pin, 8 pin, 10 pin, 11 pin, 12 pin are grounded respectively, power splitter U1 9 pin
Switch N1 8 pin are connect, 5 pin for switching N1 connect radiofrequency signal 1 by electric capacity C1, switch N1 4 pin, 6 pin, 7 pin ground connection, switch N1
3 pin connect electric capacity C2 one end, 1 pin for switching N1 connects+5V power supplys, and is grounded by electric capacity C4；
Switch N1 model HMC349MS8G；
Amplifier N2 model SGL-0622Z；
Power splitter U1 model GP2S+；
Switch Control circuit is connected as：An electric capacity C13 termination switch switching circuit switch N1 7 pin, electric capacity C13
Another termination wave filter Z1 2 pin, wave filter Z1 1 pin, 3 pin, 4 pin, 6 pin are grounded respectively, and wave filter Z1 5 pin pass through electricity
Hold 4 pin that C15 meets amplifier N6, amplifier N6 2 pin, 3 pin ground connection, amplifier N6 1 pin meets inductance L3, electric capacity C14 respectively
One end, the inductance L3 other end connects electric capacity C11, resistance R2 one end respectively, electric capacity C11 other end ground connection, resistance R2's
Another termination+5V power supplys, electric capacity C14 other end difference connecting resistance R5, electric capacity C16 one end, resistance R5 another termination
Ground, electric capacity C16 another termination wave detector N4 6 pin, wave detector N4 1 pin connect+5V power supplys,
Wave detector N4 2 pin, 5 pin ground connection, wave detector N4 4 pin connect the one of+5V power supplys, electric capacity C9 and electric capacity C10 respectively
End, electric capacity C9 and electric capacity C10 other end ground connection, wave detector N4 3 pin meet electric capacity C12, electric capacity C17 respectively by inductance L2
One end and comparator N5 3 pin, electric capacity C12 other end ground connection, the electric capacity C17 other end connect comparator N5 4 pin, electricity respectively
R4, resistance R6 one end, resistance R6 other end ground connection are hindered, the resistance R4 other end connects comparator N5 5 pin and+5V respectively
Power supply, comparator N5 2 pin ground connection, comparator N5 1 pin difference connecting resistance R3, electric capacity C8 one end and phase inverter N3 2 pin,
Resistance R3 and electric capacity the C8 other end are grounded, and phase inverter N3 3 pin ground connection, phase inverter N3 5 pin meet+5V power supplys and electric capacity C7
One end, electric capacity C7 other end ground connection, phase inverter N3 4 pin connect switch switching circuit switch N1 2 pin；
Wave filter Z1 model SBP8236K；
Phase inverter N3 model 74AHC1G04GW；
Wave detector N4 model LT5534ESC6；
Comparator N5 model MAX999EUK-T；
Amplifier N6 model SGL-0622Z.
The characteristics of the utility model is：The power that the circuit can independently detect radiofrequency signal all the way carries out switch switching,
And the sensitivity of radiofrequency signal recognition is higher, reach -90dBm weak degrees, solve that conventional circuit sensitivity is low to ask
Topic.This circuit is independently detected by the power of radiofrequency signal is used as the foundation for judging that RF signal switch switches, for identification
Whether there is and being selected significant for weak radiofrequency signal, improves the Autonomous test ability of radiofrequency signal.
Brief description of the drawings
Fig. 1 is that circuit of the present utility model connects block diagram；
Fig. 2 is the utility model switch switching circuit figure；
Fig. 3 is the utility model Switch Control circuit diagram.
Embodiment
As shown in Figure 1 to Figure 3, a kind of RF signal switch switching circuit, including switch switching circuit, Switch Control
Circuit, switch switching circuit are connected with Switch Control circuit.
Switch switching circuit is connected as：
An electric capacity C5 termination radiofrequency signal 2, electric capacity C5 another termination amplifier N2 4 pin, amplifier N2 2 pin, 3
Pin is grounded, and amplifier N2 1 pin connects inductance L1, electric capacity C6 one end respectively, and the inductance L1 other end connects electric capacity C3, resistance respectively
R1 one end, resistance R1 another termination+5V power supplys, electric capacity C3 other end ground connection, electric capacity C6 another termination power splitter U1
2 pin, power splitter U1 1 pin, 3 pin, 4 pin, 5 pin, 6 pin, 8 pin, 10 pin, 11 pin, 12 pin are grounded respectively, power splitter U1 9 pin
Switch N1 8 pin are connect, 5 pin for switching N1 connect radiofrequency signal 1 by electric capacity C1, switch N1 4 pin, 6 pin, 7 pin ground connection, switch N1
3 pin connect electric capacity C2 one end, 1 pin for switching N1 connects+5V power supplys, and is grounded by electric capacity C4；
Switch N1 model HMC349MS8G；
Amplifier N2 model SGL-0622Z；
Power splitter U1 model GP2S+.
Switch Control circuit is connected as：An electric capacity C13 termination switch switching circuit switch N1 7 pin, electric capacity C13
Another termination wave filter Z1 2 pin, wave filter Z1 1 pin, 3 pin, 4 pin, 6 pin are grounded respectively, and wave filter Z1 5 pin pass through electricity
Hold 4 pin that C15 meets amplifier N6, amplifier N6 2 pin, 3 pin ground connection, amplifier N6 1 pin meets inductance L3, electric capacity C14 respectively
One end, the inductance L3 other end connects electric capacity C11, resistance R2 one end respectively, electric capacity C11 other end ground connection, resistance R2's
Another termination+5V power supplys, electric capacity C14 other end difference connecting resistance R5, electric capacity C16 one end, resistance R5 another termination
Ground, electric capacity C16 another termination wave detector N4 6 pin, wave detector N4 1 pin connect+5V power supplys,
Wave detector N4 2 pin, 5 pin ground connection, wave detector N4 4 pin connect the one of+5V power supplys, electric capacity C9 and electric capacity C10 respectively
End, electric capacity C9 and electric capacity C10 other end ground connection, wave detector N4 3 pin meet electric capacity C12, electric capacity C17 respectively by inductance L2
One end and comparator N5 3 pin, electric capacity C12 other end ground connection, the electric capacity C17 other end connect comparator N5 4 pin, electricity respectively
R4, resistance R6 one end, resistance R6 other end ground connection are hindered, the resistance R4 other end connects comparator N5 5 pin and+5V respectively
Power supply, comparator N5 2 pin ground connection, comparator N5 1 pin difference connecting resistance R3, electric capacity C8 one end and phase inverter N3 2 pin,
Resistance R3 and electric capacity the C8 other end are grounded, and phase inverter N3 3 pin ground connection, phase inverter N3 5 pin meet+5V power supplys and electric capacity C7
One end, electric capacity C7 other end ground connection, phase inverter N3 4 pin connect switch switching circuit switch N1 2 pin；
Wave filter Z1 model SBP8236K；
Phase inverter N3 model 74AHC1G04GW；
Wave detector N4 model LT5534ESC6；
Comparator N5 model MAX999EUK-T；
Amplifier N6 model SGL-0622Z.
A kind of RF signal switch switching circuit, step are as follows：
Switch switching circuit is inputted by the signal of radiofrequency signal 1 and the two-way of radiofrequency signal 2 simultaneously comprising the Big Dipper and GPS, is penetrated
Frequency signal 1 is directly entered switch N1 chips, and radiofrequency signal 2 first passes through amplifier N2 amplifications to improve sensitivity, then by work(point
U1 points of device is two-way, and access switch N1 chips switching all the way is used, another way access switch control switching circuit；
The signal of another way first passes through wave filter Z1 filtering, to reach the mesh for the only remaining Big Dipper signal that excludes the interference signal
, then amplify by amplifier N6 to reach the signal intensity that wave detector N4 can be identified, one is converted to after wave detector N4
Individual level, then by comparator N5 compared with datum, during higher than datum, high level is exported, less than with reference to electricity
Usually, low level is exported；Then pass through a phase inverter N3, realize the conversion of low and high level, form a switch controlling signal
Level, controlling switch chip N1 switching signals；
The result of final circuit realiration is, when the power of radiofrequency signal 2 is less than -90dBm, switch selection radiofrequency signal 1 is logical
Cross, when the power of radiofrequency signal 2 is more than or equal to -90dBm, switch selection radiofrequency signal 2 passes through.
The technical indicator that this circuit reaches is as follows：
Radio frequency signal frequency：1268.52MHz；
RF switch power switched：The power of radiofrequency signal 2<Radiofrequency signal 1 passes through the work(of radiofrequency signal 2 during -90dBm
Radiofrequency signal 2 passes through during rate >=-90dBm；
Insertion Loss during 1 path of radiofrequency signal：≤3dB；
Gain during 2 path of radiofrequency signal：23±3dB.
Claims (1)
- A kind of 1. RF signal switch switching circuit, it is characterised in that：Including switch switching circuit, Switch Control circuit, The switch switching circuit is connected with Switch Control circuit；Switch switching circuit is connected as：An electric capacity C5 termination radiofrequency signal 2, electric capacity C5 another termination amplifier N2 4 pin, amplifier N2 2 pin, 3 pin connect Ground, amplifier N2 1 pin connect inductance L1, electric capacity C6 one end respectively, and the inductance L1 other end meets electric capacity C3, resistance R1 respectively One end, resistance R1 another termination+5V power supplys, electric capacity C3 other end ground connection, the 2 of electric capacity C6 another termination power splitter U1 Pin, power splitter U1 1 pin, 3 pin, 4 pin, 5 pin, 6 pin, 8 pin, 10 pin, 11 pin, 12 pin are grounded respectively, and power splitter U1 9 pin connect out N1 8 pin are closed, 5 pin for switching N1 connect radiofrequency signal 1 by electric capacity C1, switch N1 4 pin, 6 pin, 7 pin ground connection, switch the 3 of N1 Pin connects electric capacity C2 one end, and 1 pin for switching N1 connects+5V power supplys, and is grounded by electric capacity C4；Switch N1 model HMC349MS8G；Amplifier N2 model SGL-0622Z；Power splitter U1 model GP2S+；Switch Control circuit is connected as：An electric capacity C13 termination switch switching circuit switch N1 7 pin, electric capacity C13's is another One termination wave filter Z1 2 pin, wave filter Z1 1 pin, 3 pin, 4 pin, 6 pin are grounded respectively, and wave filter Z1 5 pin pass through electric capacity C15 connects amplifier N6 4 pin, amplifier N6 2 pin, 3 pin ground connection, and amplifier N6 1 pin meets inductance L3, electric capacity C14 respectively One end, the inductance L3 other end connect electric capacity C11, resistance R2 one end respectively, and electric capacity C11 other end ground connection, resistance R2's is another One termination+5V power supplys, electric capacity C14 other end difference connecting resistance R5, electric capacity C16 one end, resistance R5 other end ground connection, Electric capacity C16 another termination wave detector N4 6 pin, wave detector N4 1 pin connect+5V power supplys,Wave detector N4 2 pin, 5 pin ground connection, wave detector N4 4 pin connect one end of+5V power supplys, electric capacity C9 and electric capacity C10 respectively, Electric capacity C9 and electric capacity the C10 other end are grounded, wave detector N4 3 pin by inductance L2 connect respectively electric capacity C12, electric capacity C17 one End and comparator N5 3 pin, electric capacity C12 other end ground connection, the electric capacity C17 other end connect comparator N5 4 pin, resistance respectively R4, resistance R6 one end, resistance R6 other end ground connection, the resistance R4 other end connect comparator N5 5 pin and+5V electricity respectively Source, comparator N5 2 pin ground connection, comparator N5 1 pin difference connecting resistance R3, electric capacity C8 one end and phase inverter N3 2 pin, electricity Hinder R3 and electric capacity C8 other end ground connection, phase inverter N3 3 pin ground connection, phase inverter N3 5 pin meet+5V power supplys and electric capacity C7 One end, electric capacity C7 other end ground connection, phase inverter N3 4 pin connect switch switching circuit switch N1 2 pin；Wave filter Z1 model SBP8236K；Phase inverter N3 model 74AHC1G04GW；Wave detector N4 model LT5534ESC6；Comparator N5 model MAX999EUK-T；Amplifier N6 model SGL-0622Z.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720732520.0U CN207099057U (en) | 2017-06-22 | 2017-06-22 | A kind of RF signal switch switching circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720732520.0U CN207099057U (en) | 2017-06-22 | 2017-06-22 | A kind of RF signal switch switching circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207099057U true CN207099057U (en) | 2018-03-13 |
Family
ID=61553361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720732520.0U Active CN207099057U (en) | 2017-06-22 | 2017-06-22 | A kind of RF signal switch switching circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207099057U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196669A (en) * | 2017-06-22 | 2017-09-22 | 天津七六四通信导航技术有限公司 | A kind of implementation method of RF signal switch switching circuit |
-
2017
- 2017-06-22 CN CN201720732520.0U patent/CN207099057U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107196669A (en) * | 2017-06-22 | 2017-09-22 | 天津七六四通信导航技术有限公司 | A kind of implementation method of RF signal switch switching circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017197954A1 (en) | Low-noise power amplifier used for satellite navigation and time service, and method for use | |
| CN105487086B (en) | A kind of antenna automatic identification switching device and method | |
| CN106877892B (en) | A kind of anti-interference reception circuit structure, method and apparatus | |
| CN109164447A (en) | The electromagnetic spectrum ferreting device of L-band low-altitude surveillance radar | |
| CN104253631B (en) | Double-channel power carrier communication system and communication method thereof | |
| CN203673071U (en) | Beidou dual mode user machine external antenna switching apparatus and antenna apparatus | |
| CN104144236A (en) | Mobile phone antenna use state detection circuit | |
| CN201910852U (en) | Mobile phone capable of adaptively selecting GPS (global positioning system) antenna | |
| CN207099057U (en) | A kind of RF signal switch switching circuit | |
| CN107919919B (en) | Dual-channel transmitting power switching detection circuit, device and mobile terminal | |
| CN107863974A (en) | A kind of solid state transmitter prime network automatic switching control system | |
| CN107565918A (en) | A kind of compatible pulse and standing wave, dutycycle protection circuit and its control method excessively of continuous wave mode | |
| CN106877832A (en) | Antenna load matching process and device, communication terminal | |
| CN107196669A (en) | A kind of implementation method of RF signal switch switching circuit | |
| CN207021982U (en) | Gps antenna circuit and its communication terminal | |
| CN109245795A (en) | Two-channel signal measurement and control system and implementation method under a kind of several arq modes | |
| CN209659523U (en) | A kind of while channel wireless radio multi audio transmission wireless microphone system | |
| CN109714067A (en) | System frequency band switching method, device, storage medium, receiving end and terminal | |
| CN203643599U (en) | Secondary radar high- and intermediate-frequency digital receiver | |
| CN105301603A (en) | Gnss receiver | |
| CN205790403U (en) | BD/GPS dual output antenna assembly | |
| CN105978585B (en) | Radio circuit and terminal | |
| CN104391225A (en) | Fault detection and communication positioning method for transmission line | |
| CN204129227U (en) | A kind of antenna automatic switch-over circuit | |
| CN206364773U (en) | Low-noise amplifier |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |