CN113702698A - Resistance sheet type radio frequency high-power sensor for microwave high-power measuring system - Google Patents
Resistance sheet type radio frequency high-power sensor for microwave high-power measuring system Download PDFInfo
- Publication number
- CN113702698A CN113702698A CN202111105766.2A CN202111105766A CN113702698A CN 113702698 A CN113702698 A CN 113702698A CN 202111105766 A CN202111105766 A CN 202111105766A CN 113702698 A CN113702698 A CN 113702698A
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- power
- outer conductor
- type radio
- power sensor
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
- G01R21/02—Arrangements for measuring electric power or power factor by thermal methods, e.g. calorimetric
Abstract
The invention discloses a resistance sheet type radio frequency high-power sensor for a microwave high-power measuring system, which comprises: an outer conductor; the resistor disc substrate slot is arranged in the outer conductor and is in a square shape; the resistor disc substrate is embedded in the slot of the resistor disc substrate and used for converting high-power electromagnetic energy into heat; and the N-type radio frequency connector is arranged at one end of the outer conductor. The invention adopts a resistance sheet type high-power sensor structure, has better heat dispersion, expands the measurement power range to 1-100W, and expands the measurement frequency range to 10MHz-8GHz, and the invention uses a water heating method to carry out high-power measurement, shortens the power tracing chain, and reduces the uncertainty of a measurement system.
Description
Technical Field
The invention relates to the field of microwave high-power measurement, in particular to a resistive sheet type radio frequency high-power sensor for a microwave high-power measurement system.
Background
The medium and high power microwaves are widely applied to the fields of communication, radar, remote sensing and the like, and the accurate measurement of the power parameters directly determines the performance evaluation of radio instrument equipment in the fields, even determines the application effect. The radar action distance can be determined by measuring the output power of the transmitter; the measured input and output powers of the amplifier and various components can determine the technical indexes such as gain, insertion loss, isolation and the like; in the fields of satellite communication, space remote sensing and the like, inaccurate power measurement in microwave can cause the equipment with larger power allowance to be used in the sky, so that the weight and the volume of satellite-borne equipment are increased, the emission cost is directly increased, and the efficiency is reduced.
The traditional microwave high-power sensor has larger size and low upper limit of frequency, and cannot meet the requirement of the current high-frequency millimeter wave communication, so that the development of a microwave high-power sensor with exquisite size, high upper limit of frequency and good heat dissipation performance is urgently needed, and the sensor can be used as a system part of a water flow thermal power meter and can also be independently used as a portable microwave high-power transmission standard.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a resistor sheet type radio frequency high-power sensor for a microwave high-power measurement system, the resistor sheet type high-power sensor has a better heat dissipation performance, the measurement power range is expanded to 1-100W, and the measurement frequency range is expanded to 10MHz-8 GHz.
In order to solve the technical problem, the invention adopts the technical scheme that the resistor sheet type radio frequency high-power sensor for the microwave high-power measuring system comprises:
an outer conductor;
the resistor disc substrate slot is arranged in the outer conductor and is in a square shape;
the resistor disc substrate is embedded in the slot of the resistor disc substrate and used for converting high-power electromagnetic energy into heat; and the number of the first and second groups,
and the N-type radio frequency connector is arranged at one end of the outer conductor.
By adopting the technical scheme, the radio frequency high-power sensor performs high-power measurement by using a water heating method, a power traceability chain is shortened, the uncertainty of a measurement system is reduced, the size is exquisite, the heat distribution in the resistor disc is uniform, calibration factors in power measurement can be calibrated more favorably, and the radio frequency high-power sensor is suitable for being used as a transmission standard of microwave power quantity value transmission.
In the radio frequency high-power sensor provided by the invention, the resistor disc substrate comprises a coplanar waveguide microstrip line, a ceramic substrate and a resistor disc, the coplanar waveguide microstrip line is provided with four sides in total, the four sides of the coplanar waveguide microstrip line are enclosed into a rectangle and are embedded in the slot of the resistor disc substrate, the ceramic substrate is positioned at one end in the coplanar waveguide microstrip line, the resistor disc is embedded in the ceramic substrate, the heat distribution in the resistor disc is uniform, calibration of calibration factors in power measurement is facilitated, and the resistor disc is suitable for being used as a transmission standard of microwave power value transmission.
In the radio frequency high-power sensor provided by the invention, the coplanar waveguide microstrip line sinks on the ceramic substrate in a deposition process mode, and the resistor disc and the coplanar waveguide microstrip line are fixed on the ceramic substrate in a welding mode, so that the connection stability between the resistor disc and the coplanar waveguide microstrip line is improved.
In the radio frequency high-power sensor provided by the invention, the connecting part of the N-type radio frequency connector and the outer conductor is provided with the thread groove, the thread groove is fixedly connected with the N-type radio frequency connector through threads, and the N-type radio frequency connector is convenient for dismounting the N-type radio frequency connector and the outer conductor.
In the radio frequency high-power sensor provided by the invention, the conductor on the N-type radio frequency connector is electrically connected with the conductor on the coplanar waveguide microstrip line, and the N-type radio frequency connector is conducted with the coplanar waveguide microstrip line 1, so that the energy of the resistor disc is improved.
In the radio frequency high-power sensor provided by the invention, one end of the outer conductor is connected with a water inlet joint at a position close to one side of the N-type radio frequency connector, the other end of the outer conductor is connected with a water outlet joint, the water inlet joint and the water outlet joint are both in a pagoda shape, and the pagoda-shaped water outlet joint can be connected with a hose and is used for inputting purified water and outputting the heated purified water to obtain the purified water.
In the radio frequency high-power sensor provided by the invention, the snake-shaped pipeline is arranged in the outer conductor, one end of the snake-shaped pipeline is communicated with the water inlet joint, the other end of the snake-shaped pipeline is communicated with the water outlet joint, and the snake-shaped pipeline is additionally arranged in the sensor, so that the temperature of water in the sensor can be increased for a long time in a large area in the process of heating purified water, and the purified water generates a large temperature difference after passing through the sensor, so that the measurement precision is not influenced by the small temperature difference.
In the automatic blanking device provided by the invention, the outer wall of the outer conductor is wrapped with the heat-insulating coating which is the composite silicate heat-insulating coating, so that heat generated by the resistor substrate is locked in the outer conductor, the influence of excessive heat loss on measurement data is avoided, errors are reduced, and the precision is improved.
In summary, the automatic blanking device provided by the invention can achieve the following beneficial effects:
the invention adopts a resistance sheet type high-power sensor structure, has better heat dispersion, expands the measurement power range to 1-100W, and expands the measurement frequency range to 10MHz-8GHz, and the invention uses a water heating method to carry out high-power measurement, shortens the power tracing chain, and reduces the uncertainty of a measurement system; through add snakelike pipeline in the sensor, carrying out the in-process that heats to the pure water, can heat up the water that is in the sensor for a long time, large tracts of land for the pure water produces great difference in temperature behind the sensor, in order to avoid the less precision that influences the measurement of difference in temperature.
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 embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts:
fig. 1 is a schematic plan structure diagram of a radio frequency high-power sensor provided in this embodiment;
fig. 2 is a schematic side view of the rf high-power sensor provided in this embodiment;
fig. 3 is a partial structural diagram of an outer conductor of the sensor of the radio frequency high-power sensor provided in this embodiment;
fig. 4 is a schematic diagram of power sensing measurement provided in this embodiment.
In the figure: 1. an outer conductor; 2. a resistor disc substrate slot; 3. a resistor substrate; 301. a coplanar waveguide microstrip line; 302. a ceramic substrate; 303. resistance cards; 4. a thread groove; 5. an N-type radio frequency connector; 6. a water inlet connection; 7. a water outlet joint; 8. a serpentine conduit.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Exemplary embodiments of the invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1-4, the present embodiment provides a resistive sheet type rf high-power sensor for a microwave high-power measurement system, including:
an outer conductor 1;
the resistor chip substrate slot 2 is formed in the outer conductor 1, and the resistor chip substrate slot 2 is in a square shape;
the resistor substrate 3 is embedded in the resistor substrate slot 2 and is used for converting high-power electromagnetic energy into heat; and the number of the first and second groups,
and the N-type radio frequency connector 5 is arranged at one end of the outer conductor 1.
Referring to fig. 1 and 2, the resistive patch substrate 3 includes a coplanar waveguide microstrip line 301, a ceramic substrate 302 and a resistive patch 303, the coplanar waveguide microstrip line 301 has four sides in common, the four sides of the coplanar waveguide microstrip line 301 surround to form a rectangle shape and are embedded in the resistive patch substrate slot 2, the ceramic substrate 302 is located at one end inside the coplanar waveguide microstrip line 301, the resistive patch 303 is embedded in the ceramic substrate 302, the coplanar waveguide microstrip line 301 sinks on the ceramic substrate 302 through a deposition process, the resistive patch 303 and the coplanar waveguide microstrip line 301 are fixed on the ceramic substrate 302 through welding, the heat distribution inside the resistive patch 303 is uniform, which is more beneficial to calibration of calibration factors in power measurement and is suitable for being used as a transmission standard of microwave power quantity value transmission.
Referring to fig. 1, a threaded groove 4 is formed at a connection position of the N-type radio frequency connector 5 and the outer conductor 1, the threaded groove 4 is fixedly connected with the N-type radio frequency connector 5 through threads, the N-type radio frequency connector 5 and a conductor on the N-type radio frequency connector 5 are electrically connected with a conductor on the coplanar waveguide microstrip line 301, and the N-type radio frequency connector 5 is conducted with the coplanar waveguide microstrip line 301 to further increase energy of the resistor disc 303.
Referring to fig. 3, one side position department that the one end of outer conductor 1 is close to N type radio frequency connector 5 is connected with water inlet joint 6, the other end of outer conductor 1 is connected with water outlet joint 7, water inlet joint 6 is pagoda form with water outlet joint 7, the inside of outer conductor 1 is equipped with snakelike pipeline 8, the one end and the water inlet joint 6 of snakelike pipeline 8 are linked together, the other end and the water outlet joint 7 of snakelike pipeline 8 are linked together, through add snakelike pipeline 8 in the sensor, in-process heating the pure water, but the longer time, the large tracts of land is heated up the water that is in the sensor, make the pure water produce great difference in temperature behind the sensor, in order to avoid the less measuring precision that influences of difference in temperature.
Referring to fig. 3, the outer wall of the outer conductor 1 is wrapped with a heat-insulating coating layer which is a composite silicate heat-insulating coating layer, so that heat generated by the resistor disc substrate 3 is locked in the outer conductor 1, the measurement data is prevented from being influenced by excessive heat loss, errors are reduced, and the precision is improved.
Referring to fig. 4, circulating water is used as a calorimetric carrier, heat converted from microwave power absorbed in a microwave high-power sensor is absorbed, a temperature difference between the circulating water and the microwave power is measured through a thermopile, so that a relation between the microwave power and a thermal power is established, the microwave power is replaced by low-frequency alternating current power, alternating current energy is absorbed by the circulating water in the same way, the temperature difference between the circulating water and the microwave power is measured to obtain the relation between the alternating current power and the thermal power, and finally the microwave power and the alternating current power are linked together through substitution efficiency, so that the tracing process from the microwave power to the alternating current power is completed, and uncertainty of measurement is greatly reduced;
radio frequency power PRFAfter input to the power sensor, the power sensor converts the radio frequency power into heat: pRF＝ρ*C*VM*ΔT#(1)；
In the formula PRFFor input radio frequency power, VMIs the volume flow of water in unit time, C is the specific heat capacity of water, rho is the density of water, Delta T is the temperature rise of water temperature, and in an ideal state, VMC and rho are constant values, PRFIs in direct proportion to delta T, and because the condenser controls the temperature of the inlet water to be in a constant state (generally 23 ℃), P can be directly calculated through the temperature of the outlet waterRFSimilarly, again, the rf power is replaced with ac power input, again according to the formula:
PAC＝ρ*C*VM*ΔT#(2)
the AC power P can be calculatedACAnd the relation between the water outlet temperature delta T and the water outlet temperature delta T can be calculated to obtain the substitution efficiency of the radio frequency power to the alternating current power:
the process of tracing the radio frequency power to the alternating current power is completed, the uncertainty of the measurement of the radio frequency high power can be calculated through the uncertainty of the alternating current high power, and the stability of the measurement is ensured.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (8)
1. A resistive chip type radio frequency high-power sensor for a microwave high-power measurement system is characterized by comprising:
an outer conductor (1);
the resistor chip substrate slot (2) is formed in the outer conductor (1), and the resistor chip substrate slot (2) is square;
the resistor disc substrate (3) is embedded in the resistor disc substrate slot (2) and is used for converting high-power electromagnetic energy into heat; and the number of the first and second groups,
and the N-type radio frequency connector (5) is arranged at one end of the outer conductor (1).
2. The radio frequency high-power sensor according to claim 1, wherein the resistor sheet substrate (3) includes a coplanar waveguide microstrip line (301), a ceramic substrate (302) and a resistor sheet (303), the coplanar waveguide microstrip line (301) has four sides, the four sides are embedded in the resistor sheet substrate slot (2) in a rectangular shape, the ceramic substrate (302) is located at one end inside the coplanar waveguide microstrip line (301), and the resistor sheet (303) is embedded in the ceramic substrate (302).
3. The radio frequency high power sensor according to claim 2, wherein the coplanar waveguide microstrip line (301) is deposited on the ceramic substrate (302) by a deposition process, and the resistive sheet (303) and the coplanar waveguide microstrip line (301) are fixed on the ceramic substrate (302) by welding.
4. The high-power radio frequency sensor according to claim 1, wherein a threaded groove (4) is formed at the joint of the N-type radio frequency connector (5) and the outer conductor (1), the threaded groove (4) is fixedly connected with the N-type radio frequency connector (5) through threads, and the N-type radio frequency connector (5) is fixedly connected with the N-type radio frequency connector.
5. The radio frequency high power sensor according to claim 1 or 3, wherein the conductor on the N-type radio frequency connector (5) is electrically connected with the conductor on the coplanar waveguide microstrip line (301).
6. The radio frequency high-power sensor according to claim 1, wherein a water inlet joint (6) is connected to one end of the outer conductor (1) close to one side of the N-type radio frequency connector (5), a water outlet joint (7) is connected to the other end of the outer conductor (1), and the water inlet joint (6) and the water outlet joint (7) are both pagoda-shaped.
7. The radio frequency high-power sensor according to claim 1, wherein a serpentine pipeline (8) is arranged inside the outer conductor (1), one end of the serpentine pipeline (8) is communicated with the water inlet joint (6), and the other end of the serpentine pipeline (8) is communicated with the water outlet joint (7).
8. The radio frequency high-power sensor according to claim 1, wherein the outer wall of the outer conductor (1) is wrapped with a thermal insulation coating, and the thermal insulation coating is a composite silicate thermal insulation coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111105766.2A CN113702698B (en) | 2021-09-22 | 2021-09-22 | Resistor chip type radio frequency high-power sensor for microwave high-power measurement system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111105766.2A CN113702698B (en) | 2021-09-22 | 2021-09-22 | Resistor chip type radio frequency high-power sensor for microwave high-power measurement system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113702698A true CN113702698A (en) | 2021-11-26 |
| CN113702698B CN113702698B (en) | 2023-08-15 |
Family
ID=78661586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111105766.2A Active CN113702698B (en) | 2021-09-22 | 2021-09-22 | Resistor chip type radio frequency high-power sensor for microwave high-power measurement system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113702698B (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB919690A (en) * | 1961-12-19 | 1963-02-27 | Tavkozlesi Ki | Instrument for measuring microwave power |
| GB1016312A (en) * | 1963-08-30 | 1966-01-12 | Flann Microwave Instr Ltd | Improvements in or relating to power measuring apparatus |
| US4733170A (en) * | 1985-05-28 | 1988-03-22 | Marconi Instruments Limited | Microwave power sensors |
| US5186540A (en) * | 1991-12-30 | 1993-02-16 | Raytheon Company | Power measurement calorimeter |
| CN101029912A (en) * | 2007-01-17 | 2007-09-05 | 东南大学 | Two-end heated microwave power sensor |
| CN103076585A (en) * | 2012-12-28 | 2013-05-01 | 北京无线电计量测试研究所 | N-type coaxial thermistor type power transmission standard seat |
| CN103091549A (en) * | 2013-01-23 | 2013-05-08 | 陈星光 | Microwave high-power measuring method |
| CN105143841A (en) * | 2013-02-22 | 2015-12-09 | 伯德技术集团股份有限公司 | Microfabricated calorimeter for RF power measurement |
| CN110187168A (en) * | 2019-05-07 | 2019-08-30 | 电子科技大学 | Low-power measurement system and method in a kind of calorimetric microwave and millimeter wave |
| CN112630526A (en) * | 2020-12-17 | 2021-04-09 | 北京航天计量测试技术研究所 | Improved flow type microwave power measuring device and method |
| CN113125048A (en) * | 2021-04-26 | 2021-07-16 | 中国计量科学研究院 | Micro calorimeter capable of directly measuring thermocouple type power sensor and power reference system |
-
2021
- 2021-09-22 CN CN202111105766.2A patent/CN113702698B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB919690A (en) * | 1961-12-19 | 1963-02-27 | Tavkozlesi Ki | Instrument for measuring microwave power |
| GB1016312A (en) * | 1963-08-30 | 1966-01-12 | Flann Microwave Instr Ltd | Improvements in or relating to power measuring apparatus |
| US4733170A (en) * | 1985-05-28 | 1988-03-22 | Marconi Instruments Limited | Microwave power sensors |
| US5186540A (en) * | 1991-12-30 | 1993-02-16 | Raytheon Company | Power measurement calorimeter |
| CN101029912A (en) * | 2007-01-17 | 2007-09-05 | 东南大学 | Two-end heated microwave power sensor |
| CN103076585A (en) * | 2012-12-28 | 2013-05-01 | 北京无线电计量测试研究所 | N-type coaxial thermistor type power transmission standard seat |
| CN103091549A (en) * | 2013-01-23 | 2013-05-08 | 陈星光 | Microwave high-power measuring method |
| CN105143841A (en) * | 2013-02-22 | 2015-12-09 | 伯德技术集团股份有限公司 | Microfabricated calorimeter for RF power measurement |
| CN110187168A (en) * | 2019-05-07 | 2019-08-30 | 电子科技大学 | Low-power measurement system and method in a kind of calorimetric microwave and millimeter wave |
| CN112630526A (en) * | 2020-12-17 | 2021-04-09 | 北京航天计量测试技术研究所 | Improved flow type microwave power measuring device and method |
| CN113125048A (en) * | 2021-04-26 | 2021-07-16 | 中国计量科学研究院 | Micro calorimeter capable of directly measuring thermocouple type power sensor and power reference system |
Non-Patent Citations (2)
| Title |
|---|
| WENZE YUAN等: ""NIM Microwave Power Calibration and Measurement Capabilities"", 《IEEE》 * |
| WENZE YUAN等: ""NIM Microwave Power Calibration and Measurement Capabilities"", 《IEEE》, 31 December 2020 (2020-12-31), pages 1 - 2 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113702698B (en) | 2023-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10904962B2 (en) | Method and device for electromagnetic cooking | |
| CN100578236C (en) | M-w grade microwave power instrumentation system based on calorimetric method | |
| CN108110391B (en) | Coaxial water load for medium and high power calorimeter | |
| CN103280619B (en) | Millimeter wave micropore coupler for measuring high power | |
| CN110133367B (en) | Load for millimeter wave calorimetric microwave power meter | |
| CN105425026A (en) | Novel sealed constant-temperature double-load waveguide calorimeter | |
| McGrath et al. | Variable-temperature loads for use in accurate noise measurements of cryogenically-cooled microwave amplifiers and mixers | |
| CN108511862A (en) | A kind of coaxial automatic impedance tuner of HIGH-POWERED MICROWAVES | |
| CN109283477A (en) | A kind of substrate integration wave-guide internal calibration network | |
| CN110187168B (en) | Medium-low power measurement system and method for calorimetric microwave millimeter wave | |
| CN113702698B (en) | Resistor chip type radio frequency high-power sensor for microwave high-power measurement system | |
| US2648047A (en) | Wave guide calorimeter wattmeter | |
| Dinh et al. | Microwave power sensors with integrated filtering function for transfer power standards | |
| CN100486110C (en) | Temperature compensation attenuator | |
| CN110161303B (en) | Microwave load for 0-6GHz calorimetric microwave power meter | |
| CN103364701B (en) | The measuring method of Beam transmission in microwave vacuum electron device | |
| CN101901732A (en) | Fiber grating clamp-type helical line slow-wave structure | |
| CN101526569B (en) | Method for measuring substance dielectric constant by using monopole antenna | |
| US2497093A (en) | High-frequency wattmeter | |
| Schulz et al. | Investigation of a circular TE11-TE01-mode converter in stepped waveguide technique | |
| CN101566650B (en) | Heat loss self-compensating terminal type water load microwave high power meter | |
| US2866950A (en) | Microwave power measurement device | |
| CN103338006A (en) | Submillimeter wave frequency multiplier based on wave guide double probe | |
| Dong et al. | Design and Testing of Miniaturized Dual-Band Microstrip Antenna Sensor for Wireless Monitoring of High Temperatures | |
| CN209045731U (en) | A kind of power synthesizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |