CN213367741U - Broadband impedance transformer - Google Patents
Broadband impedance transformer Download PDFInfo
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- CN213367741U CN213367741U CN202022765179.3U CN202022765179U CN213367741U CN 213367741 U CN213367741 U CN 213367741U CN 202022765179 U CN202022765179 U CN 202022765179U CN 213367741 U CN213367741 U CN 213367741U
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- radio frequency
- coaxial cable
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Abstract
The utility model discloses a broadband impedance converter, including the radio frequency coaxial cable of U type setting, the radio frequency coaxial cable upper end is equipped with printed circuit board, and last signal input seal, signal output plate, ground plate and the capacitance compensation plate of being equipped with of printed circuit board, the radio frequency coaxial cable has 14 circles of radio frequency lines through high frequency magnetic ring altogether winding, and the 1 st circle of radio frequency line is taken a percentage and is connected to ground plate, the 7 th circle of radio frequency line is taken a percentage and is connected to the signal input plate, the 14 th circle of radio frequency line is taken a percentage and is connected to the signal department plate, the 10 th circle of radio frequency line are taken a percentage and are connected to the capacitance compensation plate through capacitance compensation, can match the transform of 50 omega signal to 200 omega signal. The utility model discloses the radio frequency line winding number increases, and the inductance value grow is favorable to improving low frequency work index, enlarges the low frequency coverage, and the impedance matching is good moreover to can reduce the loss power, practice thrift the cost, improve work efficiency.
Description
Technical Field
The utility model relates to the field of electronic technology, especially, relate to a broadband impedance converter.
Background
The impedance converter based on the in-phase transmission line has complex processing and high manufacturing cost. The input end of the radio frequency coaxial cable mainly adopts an inner conductor and an outer conductor of a single radio frequency coaxial cable as transmission paths of radio frequency input signals respectively, and meanwhile, the input end balance resistor introduces larger capacitance to the ground to influence low-frequency working indexes. In actual manufacturing and use, the insertion loss of the radio frequency input end is large, and the overall performance index of the impedance converter is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model discloses traditional impedance converter based on cophase transmission line transformer distribution synthesis technology preparation changes the structure of input power synthesis transformer radio frequency signal transmission path wherein, provides a broadband impedance converter, and the winding number of turns of this broadband impedance converter radio frequency line increases, and the inductance value grow is favorable to improving low frequency work index.
In order to achieve the above purpose, the technical scheme of the utility model is that: a broadband impedance converter comprises a U-shaped radio frequency coaxial cable, wherein a printed circuit board is arranged at the upper end of the radio frequency coaxial cable, a signal input printed block, a signal output plate block, a grounding plate block and a capacitance compensation plate block are arranged on the printed circuit board, high-frequency magnetic rings are sleeved at the two ends of the radio frequency coaxial cable, 14 circles of radio frequency wires are wound on the radio frequency coaxial cable through the high-frequency magnetic rings, the 1 st circle of the radio frequency wires are connected to the grounding plate block, the 7 th circle of the radio frequency wires are connected to the signal input plate block, the 14 th circle of the radio frequency wires are connected to the signal output plate block, the 10 th circle of the radio frequency wires are connected to the capacitance compensation plate block, and conversion from 50 omega signals to 200 omega signals can be matched through capacitance compensation.
The utility model has the advantages that:
1. the utility model discloses broadband impedance converter's radio frequency line winding number increases, and the inductance value grow is favorable to improving low frequency work index, enlarges the low frequency coverage.
2. The utility model discloses broadband impedance transformer impedance matching is good to can reduce the loss power, practice thrift the cost, improve work efficiency.
3. The utility model discloses broadband impedance transformer adopts customization printed circuit board, and the processing of being convenient for stabilizes the coil.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic diagram of a printed circuit board;
fig. 3 is a circuit diagram of the present invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.
As shown in fig. 1-3, a broadband impedance converter includes a U-shaped rf coaxial cable 1, a printed circuit board 2 is disposed at an upper end of the rf coaxial cable 1, a signal input block 3, a signal output block 4, a ground block 5 and a capacitance compensation block 6 are disposed on the printed circuit board 2, a high frequency magnetic ring 7 is sleeved outside two ends of the rf coaxial cable 1, 14 turns of rf lines are wound around the rf coaxial cable 1 through the high frequency magnetic ring 7, a 1 st turn of the rf lines is connected to the ground block 5, a 7 th turn of the rf lines is connected to the signal input block 3, a 14 th turn of the rf lines is connected to the signal output block 4, and a 10 th turn of the rf lines is connected to the capacitance compensation block 6, and conversion from 50 Ω signals to 200 Ω signals can be matched through capacitance compensation.
The described embodiments are only some, but not all embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Claims (1)
1. A broadband impedance converter is characterized by comprising a U-shaped radio frequency coaxial cable, wherein a printed circuit board is arranged at the upper end of the radio frequency coaxial cable, a signal input printed block, a signal output plate block, a grounding plate block and a capacitance compensation plate block are arranged on the printed circuit board, high-frequency magnetic rings are sleeved at two ends of the radio frequency coaxial cable in an outer sleeved mode, 14 turns of radio frequency wires passing through an inner conductor of the radio frequency coaxial cable are wound on the radio frequency coaxial cable through the high-frequency magnetic rings in total, a 1-turn tap of the radio frequency wires is connected to the grounding plate block, a 7-turn tap of the radio frequency wires is connected to the signal input plate block, a 14-turn tap of the radio frequency wires is connected to the signal output plate block, a 10-turn tap of the radio frequency wires is connected to the capacitance compensation plate block, and conversion from 50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022765179.3U CN213367741U (en) | 2020-11-26 | 2020-11-26 | Broadband impedance transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022765179.3U CN213367741U (en) | 2020-11-26 | 2020-11-26 | Broadband impedance transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213367741U true CN213367741U (en) | 2021-06-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022765179.3U Active CN213367741U (en) | 2020-11-26 | 2020-11-26 | Broadband impedance transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN213367741U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117792311A (en) * | 2024-02-26 | 2024-03-29 | 季华实验室 | Multi-stage synthesized radio frequency power amplifier |
-
2020
- 2020-11-26 CN CN202022765179.3U patent/CN213367741U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117792311A (en) * | 2024-02-26 | 2024-03-29 | 季华实验室 | Multi-stage synthesized radio frequency power amplifier |
| CN117792311B (en) * | 2024-02-26 | 2024-05-07 | 季华实验室 | Multi-stage synthesized radio frequency power amplifier |
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