CN201222728Y - Microstrip dual-frequency antenna mixer - Google Patents
Microstrip dual-frequency antenna mixer Download PDFInfo
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- CN201222728Y CN201222728Y CNU2008200409032U CN200820040903U CN201222728Y CN 201222728 Y CN201222728 Y CN 201222728Y CN U2008200409032 U CNU2008200409032 U CN U2008200409032U CN 200820040903 U CN200820040903 U CN 200820040903U CN 201222728 Y CN201222728 Y CN 201222728Y
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- microstrip line
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Abstract
The utility model discloses a microstrip dual-frequency antenna mixer, which is characterized in that the microstrip mode is adopted, the basic principle of a filter to combine with the lumped parameter and the distribution parameter principle is exerted, and the topological structure is considered, thereby RF signals of the 400-1000MHz frequency band of a LF port and the 1700-3600MHz frequency band of a HF-port can be intergraded into a signal and can be outputted from a COM port and vice versa. The mixer has light weight and small volume, can be installed in the antenna, enables a plurality signals to use the same wide band antenna, and saves the cost. Compared with an existing mixer, the frequency band is greatly improved. The main characteristics of the product of the utility model are that an existing civilian communication frequency band is enlarged, an existing SCDMA system and a newly operated WIMAX system are added, and more than 1G frequency band is reserved for the development of the civilian communication system.
Description
Technical field
The utility model relates to a kind of mixer, specifically is a kind of microstrip double frequency antenna mixer.
Background technology
What the little band dual-frequency channel merger of domestic existing frequency range comprised at present only is 800～2500MHZ frequency range, comprises the commercial signal communication system of GSM, CDMA, TETRA, DCS, PHS, TDSCDMA, CDMA2000, WCDMA and WLAN.But along with the development of communication products, the appearance of the product of more and more 3G, 3.5G, 4G and foreign outstanding, this has just added more system, requires us to enlarge frequency range.So domestic product more and more shows the narrow drawback of frequency at present.
Summary of the invention
In order to solve the narrow problem of frequency band of the little band dual-frequency channel merger of present domestic existing, the utility model product adopts little band forms, utilization filter basic principle has enlarged existing commercial communication frequency range in conjunction with lumped parameter and distributed constant principle, the WIMAX system of existing SCDMA and operation is just added again, and reserved 1G frequency how as developing in the future commercial signal communication system.
In order to solve the utility model product technology problem, adopt following scheme:
The utility model product adopts half lumped circuit, and according to specification requirement, filter joint design principle and practical topological structure are realized the effect of microstrip double frequency antenna mixer.Fixing microwave board in the cavity in the enclosure, the abundant ground connection of microwave board is characterized in that the circuit bank of microwave board becomes: comprise three ports altogether, a low pass port LF, a high pass port HF, a public port COM, wherein:
Low pass port LF links to each other with microstrip line TRL1; Microstrip line TRL1 one tunnel is connected back ground connection with capacitor C 1, another road shunt capacitance C2 and inductance L 1 are connected with microstrip line TRL2 afterwards again; Microstrip line TRL2 one tunnel is connected back ground connection with capacitor C 3, another road shunt inductance L2 and interdigital capacitor C are connected with microstrip line TRL7 afterwards again, and microstrip line TRL7 is connected with public port COM;
Another port TX is connected with microstrip line TRL3, microstrip line TRL4, capacitor C 4, microstrip line TRL5 successively, and microstrip line TRL5 one tunnel connects inductance L 3, capacitor C 5 back ground connection successively, and another road connects capacitor C 6 and microstrip line TRL6 successively; Microstrip line TRL6 one tunnel connects inductance L 4 and capacitor C 7 back ground connection successively, and another road connects capacitor C 8, and capacitor C 8 is connected with microstrip line TRL7 again.
The operation principle of the utility model product is: the filter of two different frequency ranges is low pass 400～1000MHz filter from the LF port to public port, and 1700～3600MHz signal is had inhibitory action; From the HF port to public port is high pass 1700～3600MHz filter, and 400～1000MHz signal is had inhibitory action.When the signal of 400～1000MHz when the LF port is imported, from public port output, loss power is less than 0.8dB; If from HF end output, just have the above loss of 30dB, thereby can not produced the base station of 1700～3600MHz, disturbs the downstream signal of 400～1000MHz, make an uproar the base station normally moved in the end of guaranteeing not influence the base station.Equally when the signal of 1700～3600MHz when the HF port is imported, export from public port, loss power is less than 0.8dB; If, also have the above loss of 30dB, thereby make the downstream signal of 1700～3600MHz can not produce interference, guarantee the normal operation of base station the base station of 400～1000MHz from the output of LF end.When public port COM imported, signal can walk abreast simultaneously by two filters as upward signal, made the signal of LF end output 400～1000MHz, and wherein loss power is no more than 0.8dB, and 1700～3600MHz signal power loss of output surpasses 30dB; Make the signal of HF end output 1700～3600MHz, wherein loss power is no more than 0.8dB, and 400～1000MHz signal power loss of output surpasses 30dB.Upward signal itself is fainter in addition, passes through the 30dB loss again, thereby reaches the effect of separation signal.
According to optimizing Principles of Network, the technical indicator of the utility model product is:
The utility model product is little except inserting loss, and beyond the inhibition degree height, because in light weight, volume is little, in the antenna of can packing into, makes multiple signals use same wide frequency antenna, provides cost savings.And on frequency range, compare and be improved, comprise the signal frequency range of SCDMA, GSM, CDMA, TETRA, DCS, PHS, TD-SCDMA, CDMA2000, WCDMA, WLAN and WIMAX communication system with existing similar mixer.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model;
Fig. 2 is a fundamental block diagram of the present utility model;
Fig. 3 is certainly around inductance profile figure;
Fig. 4 is a combination assumption diagram of the present utility model, and wherein a is a front view, and b is that A-A is to cutaway view.
Embodiment
The utility model product adopts half lumped circuit, and according to specification requirement, filter joint design principle and practical topological structure are realized the effect of microstrip double frequency antenna mixer.See Fig. 1.Comprise three ports, a low pass port LF, a high pass port HF, a public port COM.Wherein low pass port LF and microstrip line TRL1 link; Microstrip line TRL1 is connected with SMD patch capacitor C1, SMD patch capacitor C2, inductance L 1; SMD patch capacitor C2, inductance L 1 are connected with TRL2; TRL2 is connected with SMD patch capacitor C3, inductance L 2, interdigital capacitor C; Inductance L 2, interdigital capacitor C are connected with microstrip line TRL7; Microstrip line TRL7 is connected with public port COM.Another port TX is connected with microstrip line TRL3; Microstrip line TRL3 is connected with microstrip line TRL4; Microstrip line TRL4 is connected with SMD patch capacitor C4; SMD patch capacitor C4 is connected with microstrip line TRL5; Microstrip line TRL5 is connected with inductance L 3, SMD patch capacitor C5, SMD patch capacitor C6; SMD patch capacitor C6 is connected with TRL6; TRL6 is connected with inductance L 4, SMD patch capacitor C7, SMD patch capacitor C8; SMD patch capacitor C8 is connected with microstrip line TRL7; Microstrip line TRL7 is connected with public port COM.And the other end of SMD patch capacitor C1, C3, C5, C7 all joins with printed board ground.
The operation principle of the utility model product is: the filter of two different frequency ranges is low pass 400～1000MHz filter from the LF port to public port, and 1700～3600MHz signal is had inhibitory action; From the HF port to public port is high pass 1700～3600MHz filter, and 400～1000MHz signal is had inhibitory action.When the signal of 400～1000MHz when the LF port is imported, from public port output, loss power is less than 0.8dB; If from HF port output, just have the above loss of 30dB, thereby can not produced the base station of 1700～3600MHz, disturbs the downstream signal of 400～1000MHz, make an uproar the base station normally moved in the end of guaranteeing not influence the base station.Equally when the signal of 1700～3600MHz when the HF port is imported, export from public port, loss power is less than 0.8dB; If, also have the above loss of 30dB, thereby make the downstream signal of 1700～3600MHz can not produce interference, guarantee the normal operation of base station the base station of 400～1000MHz from the output of LF end.When public port COM3 imported, signal can walk abreast simultaneously by two filters as upward signal, made the signal of LF end output 400～1000MHz, and wherein loss power is no more than 0.8dB, and 1700～3600MHz signal power loss of output surpasses 30dB; Make the signal of HF end output 1700～3600MHz, wherein loss power is no more than 0.8dB, and 400～1000MHz signal power loss of output surpasses 30dB.Upward signal itself is fainter in addition, passes through the 30dB loss again, thereby reaches the effect of separation signal.See Fig. 2.
When the utility model product used in example, the thick dielectric constant of microwave board employing F4B-2 type 1mm was 2.55 copper coated foil plate.SMD patch capacitor C1, C2, C3, C4, C5, C6, C7, C8 appearance value are respectively 1.8PF, 0.2PF, 3.3PF, 2.4PF, 4PF, 1.3PF, 2.4PF, 3.3PF.The interdigital number of interdigital capacitor C is 4, refers to that the long 3mm of being, finger beam are that 0.3mm, finger gap 0.3mm, Interdigital Space are 0.3mm.
Inductance L 1, L2, L3, L4 are the winding by hand inductance, and the diameter of seeing Fig. 3 inductance is D, and length is L, and the number of turn is N, and diameter of wire is d.Unit: millimeter
L1：D＝1.5 L＝2.7 N＝3 d＝0.5
L2：D＝1.5 L＝3 N＝3 d＝0.5
L3：D＝1.5 L＝1.5 N＝2 d＝0.5
L4：D＝1.5 L＝2.8 N＝3 d＝0.5
Microstrip line TRL1 long for 7mm, wide be 2mm, TRL2 is that two sections parallel lines intersect again, two sections parallel line lengths be 3.5mm, wide for 1mm, the 1.7mm of being separated by, intersect that the back is long to be 2.5mm, the wide 1.7mm. of being.The wide 0.2mm of microstrip line TRL3, long be 7mm, TRL4 is long be 2mm for 3mm is wide, and TRL5 is long be 2mm for 2.5mm is wide, TRL6 length be 2.5mm wide be 2.5mm.TRL7 is long to be 2mm for 9mm is wide.
Whole microwave board is screwed on metallic cavity, profile such as Fig. 4 a and Fig. 4 b.Its cover plate 32 is covered at cavity 31 suitable for reading, and microwave board 33 is for being installed in cavity 1 inner bottom surface; 3 two hole flange SMA-Female joints 34 lay respectively at the cavity both sides; Sunk screw 35 is of a size of M2.5*6; Button-headed screw 36 is M2*4; Installing hole 37 is positioned at four jiaos.The joint core of 3 two hole flange SMA-Female joints 34 is 0.5mm above microwave board 33 all, and welds together with scolding tin.
The whole profile of the utility model is small and exquisite, practical, cost is low, and through handling, makes cavity not have wedge angle, and is safe and reliable.
Claims (5)
1, a kind of microstrip double frequency antenna mixer comprises shell, fixing microwave board in the cavity in the enclosure, the abundant ground connection of microwave board is characterized in that the circuit bank of microwave board becomes: comprise three ports altogether, a low pass port LF, a high pass port HF, a public port COM, wherein:
Low pass port LF links to each other with microstrip line TRL1; Microstrip line TRL1 one tunnel is connected back ground connection with capacitor C 1, another road shunt capacitance C2 and inductance L 1 are connected with microstrip line TRL2 afterwards again; Microstrip line TRL2 one tunnel is connected back ground connection with capacitor C 3, another road shunt inductance L2 and interdigital capacitor C are connected with microstrip line TRL7 afterwards again, and microstrip line TRL7 is connected with public port COM;
Another port TX is connected with microstrip line TRL3, microstrip line TRL4, capacitor C 4, microstrip line TRL5 successively, and microstrip line TRL5 one tunnel connects inductance L 3, capacitor C 5 back ground connection successively, and another road connects capacitor C 6 and microstrip line TRL6 successively; Microstrip line TRL6 one tunnel connects inductance L 4 and capacitor C 7 back ground connection successively, and another road connects capacitor C 8, and capacitor C 8 is connected with microstrip line TRL7 again.
2, microstrip double frequency antenna mixer according to claim 1 is characterized in that: the thick dielectric constant of microwave board employing F4B-2 type 1mm is 2.55 copper coated foil plate.
3, microstrip double frequency antenna mixer according to claim 1 and 2, it is characterized in that: capacitor C 1, C2, C3, C4, C5, C6, C7, C8 are the SMD patch capacitors, and its appearance value is respectively 1.8PF, 0.2PF, 3.3PF, 2.4PF, 4PF, 1.3PF, 2.4PF, 3.3PF according to sequence number; The interdigital number of interdigital capacitor C is 4, refers to that the long 3mm of being, finger beam are that 0.3mm, finger gap 0.3mm, Interdigital Space are 0.3mm.
4, microstrip double frequency antenna mixer according to claim 1 and 2 is characterized in that: the diameter of inductance is D, and length is L, and the number of turn is N, and diameter of wire is d, unit: millimeter, wherein:
L1：D＝1.5 L＝2.7 N＝3 d＝0.5
L2：D＝1.5 L＝3 N＝3 d＝0.5
L3：D＝1.5 L＝1.5 N＝2 d＝0.5
L4：D＝1.5 L＝2.8 N＝3 d＝0.5
5, microstrip double frequency antenna mixer according to claim 1 and 2, it is characterized in that: the long 7mm of being of microstrip line TRL1, the wide 2mm of being, TRL2 is that two sections parallel lines intersect again, two sections parallel line lengths be 3.5mm, wide for 1mm, the 1.7mm of being separated by, intersect the back long for 2.5mm, widely be 1.7mm; The wide 0.2mm of microstrip line TRL3, length are 7mm; TRL4 is long to be 2mm for 3mm is wide; TRL5 is long to be 2mm for 2.5mm is wide; TRL6 is long to be 2.5mm for 2.5mm is wide; TRL7 is long to be 2mm for 9mm is wide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200409032U CN201222728Y (en) | 2008-07-10 | 2008-07-10 | Microstrip dual-frequency antenna mixer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200409032U CN201222728Y (en) | 2008-07-10 | 2008-07-10 | Microstrip dual-frequency antenna mixer |
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| Publication Number | Publication Date |
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| CN201222728Y true CN201222728Y (en) | 2009-04-15 |
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| CNU2008200409032U Expired - Fee Related CN201222728Y (en) | 2008-07-10 | 2008-07-10 | Microstrip dual-frequency antenna mixer |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789796A (en) * | 2009-08-10 | 2010-07-28 | 上海闻泰电子科技有限公司 | Filter circuit for inhibiting harmonic signal of mobile terminal and method therefor |
| CN101794928A (en) * | 2010-01-08 | 2010-08-04 | 中兴通讯股份有限公司 | Method, decomposing and synthesizing router and terminal for decomposing and synthesizing three-frequency range code division multiple access signal |
| CN102163605A (en) * | 2010-12-28 | 2011-08-24 | 四川龙瑞微电子有限公司 | Microstrip network of microwave integrated circuit |
| CN101877917B (en) * | 2009-04-28 | 2012-09-05 | 电信科学技术研究院 | Remote radio unit |
| CN107492699A (en) * | 2016-06-12 | 2017-12-19 | 中兴通讯股份有限公司 | A kind of frequency combiner, design method and communicator |
| CN112490661A (en) * | 2020-11-23 | 2021-03-12 | 上海海积信息科技股份有限公司 | Impedance matching device and antenna |
-
2008
- 2008-07-10 CN CNU2008200409032U patent/CN201222728Y/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101877917B (en) * | 2009-04-28 | 2012-09-05 | 电信科学技术研究院 | Remote radio unit |
| CN101789796A (en) * | 2009-08-10 | 2010-07-28 | 上海闻泰电子科技有限公司 | Filter circuit for inhibiting harmonic signal of mobile terminal and method therefor |
| CN101794928A (en) * | 2010-01-08 | 2010-08-04 | 中兴通讯股份有限公司 | Method, decomposing and synthesizing router and terminal for decomposing and synthesizing three-frequency range code division multiple access signal |
| WO2011082587A1 (en) * | 2010-01-08 | 2011-07-14 | 中兴通讯股份有限公司 | Method, splitter/mixer and terminal for splitting and mixing tri-band code division multiple access signals |
| CN102163605A (en) * | 2010-12-28 | 2011-08-24 | 四川龙瑞微电子有限公司 | Microstrip network of microwave integrated circuit |
| CN102163605B (en) * | 2010-12-28 | 2013-03-20 | 四川龙瑞微电子有限公司 | Microstrip network of microwave integrated circuit |
| CN107492699A (en) * | 2016-06-12 | 2017-12-19 | 中兴通讯股份有限公司 | A kind of frequency combiner, design method and communicator |
| CN112490661A (en) * | 2020-11-23 | 2021-03-12 | 上海海积信息科技股份有限公司 | Impedance matching device and antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090415 Termination date: 20110710 |