CN202977667U - High out-of-band rejection ultra-wideband filter - Google Patents
High out-of-band rejection ultra-wideband filter Download PDFInfo
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- CN202977667U CN202977667U CN 201220622667 CN201220622667U CN202977667U CN 202977667 U CN202977667 U CN 202977667U CN 201220622667 CN201220622667 CN 201220622667 CN 201220622667 U CN201220622667 U CN 201220622667U CN 202977667 U CN202977667 U CN 202977667U
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Abstract
A high out-of-band rejection ultra-wideband filter disclosed by the utility model relates to the field of electronic communication and aims to solve the technical problem that conventional ultra-wideband filters are not high in out-of-band rejection. The high out-of-band rejection ultra-wideband filter employs a microstrip structure. An input load line (1) is connected in series with an impedance conversion line (2) and an output load line (3). A first-order loading structure is composed of a first-order inductance loading line (4), a first-order capacitance loading line (5), and a first-order coupling capacitance line (6), which are sequentially connected; a second-order loading structure is composed of a second-order inductance loading line (7), a second-order capacitance loading line (8), and a second-order coupling capacitance line (9), which are sequentially connected; and a third-order loading structure is composed of a third-order inductance loading line (10), a third-order capacitance loading line (11), and a third-order coupling capacitance line (12), which are sequentially connected.
Description
Technical field
The utility model relates to electronic communication field, and particularly a kind of high-band for fields such as microwave communication, satellite communication, Aero-Space electronic equipments suppresses ultra-wide band filter outward.
Background technology
Ultra-wide band filter refers to that bandwidth surpasses the filter of an octave, it is parts crucial in present ultra-wideband communication system, frequency selectivity due to resonator, the signal of assigned frequency can pass through device, and the energy beyond constant-frequency signal is reflected, thereby realizes the function that frequency is selected.Existing ultra-wide band filter Out-of-band rejection is all not high, suppress generally to only have at band outer 10% bandwidth place-20dBc about.
Summary of the invention
The utility model is intended to solve not high-technology problem of existing ultra-wide band filter Out-of-band rejection, suppresses ultra-wide band filter outward so that the high-band that a kind of Out-of-band rejection is high, simple in structure, Insertion Loss is little, the range of receiving of signal is wide to be provided.
The purpose of this utility model is achieved through the following technical solutions.
High-band of the present utility model suppresses ultra-wide band filter outward, input load line 1 serial connection impedance transformation line 2 and output load line 3, the single order loading structure is made of the single order inductance loaded line 4, single order capacitive load line 5 and the single order coupling capacitance line 6 that connect in turn, and wherein single order inductance loaded line 4 connects the input of impedance transformation line 2; The second order loading structure is made of the second order inductance loaded line 7, second order capacitive load line 8 and the second order coupled electric capacity line 9 that connect in turn, and wherein second order inductance loaded line 7 connects the stage casing of impedance transformation line 2; Three rank loading structures are made of the three rank inductance loaded lines 10, three rank capacitive load lines 11 and the three rank coupling capacitance lines 12 that connect in turn, and wherein three rank inductance loaded lines 10 connect the output of impedance transformation line 2.
The utility model high-band suppresses the beneficial effect of ultra-wide band filter outward: the microstrip filter owing to adopting novel capacitive load structure, and make machining accuracy more easy to control, structure is simpler, and Insertion Loss is less under square one, can increase the scope of accepting of signal; Another advantage has loaded electrical length exactly, makes volume less.
Description of drawings
Fig. 1 structure principle chart of the present utility model
The number in the figure explanation:
1 input load line, 2 impedance transformation lines, 3 output load lines, 4 single order inductance loaded lines, 5 single order capacitive load lines, 6 single order coupling capacitance lines, 7 second order inductance loaded lines, 8 second order capacitive load lines, 9 second order coupled electric capacity lines, 10 3 rank inductance loaded lines, 11 3 rank capacitive load lines, 12 3 rank coupling capacitance lines
Embodiment
The utility model detailed construction, application principle, effect and effect with reference to accompanying drawing 1, are explained by following execution mode.
Consult shown in Figure 1, high-band of the present utility model suppresses ultra-wide band filter outward, input load line 1 serial connection impedance transformation line 2 and output load line 3, the single order loading structure is made of the single order inductance loaded line 4, single order capacitive load line 5 and the single order coupling capacitance line 6 that connect in turn, and wherein single order inductance loaded line 4 connects the input of impedance transformation line 2; The second order loading structure is made of the second order inductance loaded line 7, second order capacitive load line 8 and the second order coupled electric capacity line 9 that connect in turn, and wherein second order inductance loaded line 7 connects the stage casing of impedance transformation line 2; Three rank loading structures are made of the three rank inductance loaded lines 10, three rank capacitive load lines 11 and the three rank coupling capacitance lines 12 that connect in turn, and wherein three rank inductance loaded lines 10 connect the output of impedance transformation line 2.
Through experimental verification, high-band of the present utility model suppresses ultra-wide band filter outward, be not more than 1dB at 3.5GHz～7GHz Insertion Loss, and 7.9GHz place Out-of-band rejection up to-more than 50dBc, for the high-band that guarantees the rear end suppresses outward, this filter front end Out-of-band rejection degree is not high, have at the 2GHz place-more than 30dBc.
High-band of the present utility model suppresses ultra-wide band filter outward, to the effective outer interference signal of press belt of the processing by signal, the sensitivity of accepting of system is improved, and antijamming capability is strong.
Therefore high-band of the present utility model suppresses ultra-wide band filter outward, has high many technological merits that Out-of-band rejection is high, simple in structure, Insertion Loss is little, the range of receiving of signal is wide.
Claims (1)
1. high-band suppresses ultra-wide band filter outward, it is characterized in that: adopt microstrip structure, input load line (1) serial connection impedance transformation line (2) and output load line (3), the single order loading structure is made of the single order inductance loaded line (4) that connects in turn, single order capacitive load line (5) and single order coupling capacitance line (6), and wherein single order inductance loaded line (4) connects the input of impedance transformation line (2); The second order loading structure is made of the second order inductance loaded line (7) that connects in turn, second order capacitive load line (8) and second order coupled electric capacity line (9), and wherein second order inductance loaded line (7) connects the stage casing of impedance transformation line (2); Three rank loading structures are made of the three rank inductance loaded lines (10) that connect in turn, three rank capacitive load lines (11) and three rank coupling capacitance lines (12), and wherein three rank inductance loaded lines (10) connect the output of impedance transformation line (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622667 CN202977667U (en) | 2012-11-22 | 2012-11-22 | High out-of-band rejection ultra-wideband filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220622667 CN202977667U (en) | 2012-11-22 | 2012-11-22 | High out-of-band rejection ultra-wideband filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202977667U true CN202977667U (en) | 2013-06-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220622667 Expired - Fee Related CN202977667U (en) | 2012-11-22 | 2012-11-22 | High out-of-band rejection ultra-wideband filter |
Country Status (1)
| Country | Link |
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| CN (1) | CN202977667U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331925A (en) * | 2017-05-31 | 2017-11-07 | 中国电子科技集团公司第十三研究所 | Trapper chip |
-
2012
- 2012-11-22 CN CN 201220622667 patent/CN202977667U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107331925A (en) * | 2017-05-31 | 2017-11-07 | 中国电子科技集团公司第十三研究所 | Trapper chip |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20151122 |