CN209418740U - A kind of radio frequency coaxial load based on film resistor - Google Patents
A kind of radio frequency coaxial load based on film resistor Download PDFInfo
- Publication number
- CN209418740U CN209418740U CN201920372326.5U CN201920372326U CN209418740U CN 209418740 U CN209418740 U CN 209418740U CN 201920372326 U CN201920372326 U CN 201920372326U CN 209418740 U CN209418740 U CN 209418740U
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- film resistor
- substrate
- plate
- positioning sleeve
- radio frequency
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Abstract
The utility model relates to radio frequency coaxial loads, and in particular to a kind of radio frequency coaxial load based on film resistor, to solve big existing coaxial load volume, resistance to power and frequency of use is low, difficulty of processing is big technical problem.The utility model includes shell, dielectric, inner conductor, rear cover, load resistance；It further include a mao button, positioning sleeve；The rear end of inner conductor is provided with blind hole；Hair button is arranged in blind hole and blind hole is stretched out in rear end；Positioning sleeve is cylindrical structure, is arranged between inner conductor and rear cover；Load resistance is film resistor；Film resistor includes plate-like substrate, sputters at 50 Ω sheet resistances in plate-like substrate, the ground line coated in plate-like substrate, microstrip line；Plate-like substrate is in positioning sleeve；The length of plate-like substrate and the length of positioning sleeve are identical；The front end of microstrip line is connect with hair button rear end, and its rear end is connect with the front end of 50 Ω sheet resistances；The rear end of 50 Ω sheet resistances and the front end of ground line connect；The rear end of ground line is connect with rear cover.
Description
Technical field
The utility model relates to a kind of radio frequency coaxial loads, and in particular to a kind of RF coaxial based on film resistor is negative
It carries.
Background technique
Radio frequency coaxial load is widely applied in wireless device, electronic instrument and various microwave devices,
In system, impedance matching is carried out to vacant space signal channel and test port, both ensure that the impedance matching of signal, significantly
Reduce interfering with each other between the signals leakiness of vacant port, system, be one of important component of RF transmission system,
The quality of performance will directly affect the comprehensive performance of whole system.
With the continuous development of wireless communication cause, the volume of radio frequency coaxial load, resistance to power, electrical property etc. are mentioned
Higher requirement is gone out.Traditional radio frequency coaxial load using column type thick-film resistor 15 and RF coaxial part by welding or
It the modes such as plugs together and realizes connection (as shown in Figure 1), have the disadvantage in that
1) diameter of thick-film resistor 15 (NiCr being applied on ceramic rod, resistance nominal value is same as the characteristic impedance of transmission line)
Greatly, resistance to power is low, resistance value stability is poor, causes the big volume of radio frequency coaxial load, resistance to power and frequency of use low；
2) in order to reach good matching, it is often necessary to the inwall processing exponentially of the shell 16 equipped with active component or
Tractrix shape, structure is complicated, difficulty of processing is quite big.
Summary of the invention
The utility model provides a kind of radio frequency coaxial load based on film resistor, to solve existing radio frequency coaxial load body
Big, the resistance to power of product and the technical problem that frequency of use is low and difficulty of processing is big.
The technical solution of the utility model is:
A kind of radio frequency coaxial load based on film resistor, including shell, setting exist in the intracorporal dielectric of shell, setting
Inner conductor in dielectric, is arranged in shell and between inner conductor and rear cover the rear cover that rear is arranged in
Load resistance；It is characterized in that, further includes a mao button, positioning sleeve；
The rear end of the inner conductor is provided with blind hole；The hair button is arranged in blind hole and the blind hole is stretched out in rear end；
The positioning sleeve is cylindrical structure, is arranged between inner conductor and rear cover；
The load resistance is film resistor；The film resistor include plate-like substrate, sputter in plate-like substrate 50
Ω sheet resistance and coated in the ground line and microstrip line to connect respectively with 50 Ω sheet resistance both ends in plate-like substrate；Wherein, it is grounded
Also extend coating to the both sides of the edge region of plate-like substrate and rear end face, microstrip line also extends the front end face of coating to plate-like substrate
Middle part；
The length of the plate-like substrate and the length of positioning sleeve are identical, and front/rear end is concordant with positioning sleeve；Plate-like substrate
Both sides of the edge are embedded in the inner wall of positioning sleeve in the width direction；
The front end of film resistor is connect with hair button rear end, and the rear end of film resistor is connect with rear cover so that microstrip line with
Hair button rear end Elastic Contact, ground line are contacted with rear cover.
Further, in order to carry out electrical performance indexes adjusting to radio frequency coaxial load, the film resistor further includes index
Adjustment region, the index adjustment region is coated in plate-like substrate, positioned at the two sides of microstrip line；The index adjustment region packet
Include multiple adjusting lines being arranged in parallel and connect with ground line；Length, width and the mutual spacing for adjusting line differs.
Further, there are two C-channels for the positioning sleeve internal symmetry setting；The plate-like substrate is embedded in the two of positioning sleeve
In a C-channel.
Further, the 50 Ω sheet resistance includes two and is parallel to each other and spaced resistance, the resistance value of two resistance
It is equal in magnitude.
Further, the hair button is formed using beryllium-bronze filament winding system.
Further, the plate-like substrate uses ceramic material.
Further, positioning sleeve 3 uses HPb59- brass material.
Compared with prior art, the utility model has the advantages that:
1, the utility model realizes high-frequency transmission, and the volume of film resistor using film resistor and hair button elastic connection
Small, resistance value varies with temperature small, it can be ensured that small in size, the resistance to power and frequency of use of radio frequency coaxial load are high.
2, the utility model positions film resistor using positioning sleeve, it is not necessary that outer casing inner wall is processed exponentially or is draged
Object wire shaped, thus it is easy to process.
3, the utility model radio frequency coaxial load is by hair button and film resistor elastic connection, weld without carrying out or
It plugs together, structure is simple, and cost is relatively low.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of existing radio frequency coaxial load；
Fig. 2 is the half sectional view of the utility model radio frequency coaxial load；
Fig. 3 is the cross-sectional view of the line A-A along Fig. 2；
Fig. 4 is the cross-sectional view of the line B-B along Fig. 2；
Fig. 5 is the connection schematic diagram of hair button and inner conductor in Fig. 2；
Fig. 6 is the main view of film resistor in the utility model radio frequency coaxial load；
Fig. 7 is the side view of film resistor in the utility model radio frequency coaxial load；
Fig. 8 is the top view of film resistor in the utility model radio frequency coaxial load；
Appended drawing reference are as follows: 1- shell, 3- positioning sleeve, 4- film resistor, 51- maos of buttons, is led in 52- at 2- dielectric
Body, 6- rear cover, 7- index adjustment region, 8-50 Ω sheet resistance, 9- microstrip line, 10- plate-like substrate, 11- ground line, 12- blind hole,
13- adjusts line, 14-C shape slot, 15- thick-film resistor, 16- shell.
Specific embodiment
The utility model is described further below in conjunction with the drawings and specific embodiments.
Referring to fig. 2~4, radio frequency coaxial load of the utility model based on film resistor, including shell 1, setting are in shell
Interior dielectric 2, the inner conductor 52 being arranged in dielectric, the rear cover 6 that rear is set, be arranged in shell and
Load resistance and hair button 51 and positioning sleeve 3 between inner conductor and rear cover；
The rear end of inner conductor 52 is provided with blind hole 12；Hair button 51 is arranged in blind hole 12 and blind hole is slightly stretched out in rear end, ginseng
See Fig. 5；The assembly of hair button 51 and inner conductor 52 is assembled in dielectric 2, then dielectric is fitted into shell 1 and is completed
The assembly of radio frequency interface, wherein hair button 51 is formed using beryllium-bronze filament winding system.
Positioning sleeve 3 is cylindrical structure, is arranged between inner conductor 52 and rear cover 6；Positioning sleeve is pressed by rear cover and shell, after
Lid 6 and shell 1 are completed radio frequency using interference fit and are grounded；When radio frequency coaxial load bears high-power, positioning sleeve can be passed through
3, rear cover 6, shell 1 effectively carry out heat transfer, and then realize the resistance to high power characteristics of radio frequency coaxial load.
Load resistance is film resistor 4；Film resistor includes plate-like substrate 10, sputters at 50 sides Ω in plate-like substrate
Resistance 8 and coated in the ground line 11 and microstrip line 9 to connect respectively with 50 Ω sheet resistance, 8 both ends in plate-like substrate 10, referring to figure
6-8；Wherein, ground line 11 also extends coating to the both sides of the edge region of plate-like substrate 10 and rear end face, and microstrip line 9 also extends painting
It covers in the middle part of the front end face of plate-like substrate 10；The length of plate-like substrate 10 is identical as the length of positioning sleeve 3, front/rear end and positioning
Set is concordant；The both sides of the edge of plate-like substrate 10 are embedded in the inner wall of positioning sleeve 3 in the width direction；50 Ω sheet resistances 8 can be a resistance
Value be 50 Ω resistance, or multiple equal-sized resistance, resistance value and be 50 Ω, in the present embodiment, 50 sides Ω
Resistance is parallel to each other including two and spaced resistance, the resistance value of two resistance are equal in magnitude.
The front end of film resistor 4 is connect with 51 rear end of hair button, and the rear end of film resistor 4 is connect with rear cover 6, so that micro-strip
Line 9 and hair button rear end Elastic Contact, ground line 11 are contacted with rear cover 6.
In the embodiments of the present invention, positioning sleeve uses HPb59- brass material, is arranged in 3 internal symmetry of positioning sleeve
There are two C-channels 14, and plate-like substrate 10 is in two C-channels 14 of positioning sleeve 3, it can be ensured that the positioning accurate of film resistor
Degree；3 assembly of film resistor 4 and round positioning sleeve, the entire suspension cable architecture as 50 ohm characteristic impedances are matched.
Above-mentioned film resistor further includes index adjustment region 7, for carrying out electrical performance indexes adjusting to radio frequency coaxial load,
It is related with radio frequency interface that index adjusts frequency range.The index adjustment region 7 is coated in plate-like substrate 10, is located at microstrip line
Two sides comprising it is multiple be arranged in parallel and with ground line connection adjusting lines 13；Adjust the length of line 13, width and mutually
Spacing etc.；From fig. 6, it can be seen that index adjustment region 7,50 Ω sheet resistances 8 etc. are respectively positioned on the upper surface of plate-like substrate, plate base
The lower surface of material is not provided with, index adjustment region 7,50 Ω sheet resistances 8, is also not provided with ground line and microstrip line.
The utility model carries out no-welding connection, it can be achieved that height is kept pouring in film resistor using the spring function of hair button
It is defeated；Film resistor uses the plate-like substrate of ceramic material, and thin resistance is sputtered in plate-like substrate, completes to hinder in conjunction with transmission line theory
Anti- matching.Film resistor can accomplish that low-down temperature coefficient, such resistance vary with temperature very small, tissue stabilization
Reliably, tolerance power etc. is superior to column resistance.
Claims (7)
1. a kind of radio frequency coaxial load based on film resistor, including shell (1), the dielectric being arranged in shell (1)
(2), be arranged inner conductor (52) in dielectric (2), setting shell (1) rear portion rear cover (6), be arranged in shell (1)
Load resistance interior and between inner conductor (52) and rear cover (6)；It is characterized by also including hair buttons (51), positioning sleeve
(3)；
The rear end of the inner conductor (52) is provided with blind hole (12)；It is described that hair button (51) setting is in blind hole (12) and rear end is stretched
The blind hole (12) out；
The positioning sleeve (3) is cylindrical structure, is arranged between inner conductor (52) and rear cover (6)；
The load resistance is film resistor (4)；The film resistor (4) includes plate-like substrate (10), sputters at plate-like substrate
(10) 50 Ω sheet resistances (8) on and it is coated in the ground line to connect respectively with 50 Ω sheet resistance both ends on plate-like substrate (10)
(11) and microstrip line (9)；Wherein, ground line (11) also extends coating to the both sides of the edge region and rear end of plate-like substrate (10)
Face, microstrip line (9) also extend in the middle part of coating to the front end face of plate-like substrate (10)；
The length of the plate-like substrate (10) is identical as the length of positioning sleeve (3), and front/rear end is concordant with positioning sleeve；Plate-like substrate
(10) both sides of the edge are embedded in the inner wall of positioning sleeve (3) in the width direction；
The front end of film resistor (4) is connect with hair button (51) rear end, and the rear end of film resistor (4) is connect with rear cover (6), so that
Microstrip line (9) and hair button rear end Elastic Contact, ground line (11) are contacted with rear cover (6).
2. the radio frequency coaxial load according to claim 1 based on film resistor, it is characterised in that: the film resistor
It (4) further include index adjustment region (7)；
The index adjustment region (7) is coated on plate-like substrate (10), is located at the two sides of microstrip line (9)；
The index adjustment region (7) includes multiple adjusting lines (13) for being arranged in parallel and connecting with ground line (11)；It is described
Length, width and the mutual spacing for adjusting line (13) differ.
3. the radio frequency coaxial load according to claim 1 or 2 based on film resistor, it is characterised in that: the positioning sleeve
(3) there are two C-channel (14) for internal symmetry setting；
The plate-like substrate (10) is in two C-channels (14) of positioning sleeve (3).
4. the radio frequency coaxial load according to claim 3 based on film resistor, it is characterised in that: the 50 Ω sheet resistance packet
Two are included to be parallel to each other and spaced resistance, the resistance value of two resistance are equal in magnitude.
5. the radio frequency coaxial load according to claim 4 based on film resistor, it is characterised in that: the hair button (51)
It is formed using beryllium-bronze filament winding system.
6. the radio frequency coaxial load according to claim 5 based on film resistor, it is characterised in that: the plate-like substrate
(10) ceramic material is used.
7. the radio frequency coaxial load according to claim 6 based on film resistor, it is characterised in that: the positioning sleeve (3)
Using HPb59- brass material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920372326.5U CN209418740U (en) | 2019-03-22 | 2019-03-22 | A kind of radio frequency coaxial load based on film resistor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920372326.5U CN209418740U (en) | 2019-03-22 | 2019-03-22 | A kind of radio frequency coaxial load based on film resistor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209418740U true CN209418740U (en) | 2019-09-20 |
Family
ID=67945942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920372326.5U Withdrawn - After Issue CN209418740U (en) | 2019-03-22 | 2019-03-22 | A kind of radio frequency coaxial load based on film resistor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209418740U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786913A (en) * | 2019-03-22 | 2019-05-21 | 西安雷航电子信息技术有限公司 | A kind of radio frequency coaxial load based on film resistor |
-
2019
- 2019-03-22 CN CN201920372326.5U patent/CN209418740U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109786913A (en) * | 2019-03-22 | 2019-05-21 | 西安雷航电子信息技术有限公司 | A kind of radio frequency coaxial load based on film resistor |
| CN109786913B (en) * | 2019-03-22 | 2023-09-01 | 西安雷航电子信息技术有限公司 | Radio frequency coaxial load based on thin film resistor |
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Legal Events
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190920 Effective date of abandoning: 20230901 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190920 Effective date of abandoning: 20230901 |