CN204067525U - A kind of substrate integration wave-guide tunable filter loading PIN pipe - Google Patents
A kind of substrate integration wave-guide tunable filter loading PIN pipe Download PDFInfo
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- CN204067525U CN204067525U CN201420533132.6U CN201420533132U CN204067525U CN 204067525 U CN204067525 U CN 204067525U CN 201420533132 U CN201420533132 U CN 201420533132U CN 204067525 U CN204067525 U CN 204067525U
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Abstract
The utility model discloses a kind of substrate integration wave-guide tunable filter loading PIN pipe, comprise the first metal copper clad layers (1), dielectric substrate (2), the second metal copper clad layers (3) that stack gradually from top to bottom, plated-through hole array (4) forms symmetrical rectangle tunable cavity one (61), resonant cavity two (62).There are two groups of transverse grooves (15) upper table section (11) inside, often organize transverse groove (15) inside and have two pads one (16), two pads two (17), the pin of patch capacitor (51) respectively with upper table section (11), pad one (16) welds, the anode of PIN diode (52), negative electrode respectively with pad one (16), upper table section (11) is welded, the pin of chip inductor (53) respectively with pad one (16), pad two (17) welds, form tuning circuit, the upper distribution two groups of tuning circuits of every bar transverse groove (15).The utility model tuning voltage is low, the advantage that loss is little, can be used in multiband communication system.
Description
Technical field
The utility model belongs to microwave and millimeter wave device arts, particularly relates to the substrate integration wave-guide tunable filter of the loading PIN pipe in microwave and millimeter wave device.
Background technology
Early stage wireless communication system is usually operated in an a certain fixed frequency range, but, in recent years along with mobile communication, the fast development of WLAN (wireless local area network), the rush of demand that people exchange for wireless data, communications band is day by day crowded, and the development trend of Modern Communication System is the multipurpose radio frequency transceiver of future generation of the high flexible designed for various emerging application.And the microwave tunable filter of the adaptively selected working frequency range of energy belongs to the core devices of this receive-transmit system.Tunable filter is positioned at receiver front end, can improve the utilance of frequency spectrum resource, is used for suppressing interference signal, or the phase noise relaxed oscillator and dynamic range requirement.And in software radio system, tunable filter is then used for replacing the bank of filters of substantial amounts, reduces the area of system, increase the flexibility of system.
Tunable filter is normally realized by loading tuned cell, and such as, semiconductor PIN manages and variable capacitance diode, radio-frequency micro electromechanical system (MEMS).This kind of tuned cell is easy to be integrated in passive filter structure, and its tuning voltage is relatively low, and tuned speed is fast, is therefore generally used in the design of reconfigurable filter.Substrate integration wave-guide is the emerging device that development in recent years is got up, and gathered conventional microstrip line and the common advantage of metal waveguide, loss is little, and power capacity is large, is easy to processing.The tunable filter that the utility model proposes, combine PIN pipe tuned speed fast, tuning voltage is low, the advantage that substrate integration wave-guide loss is little.
Summary of the invention
The purpose of this utility model proposes a kind of substrate integration wave-guide tunable filter loading PIN pipe, and overcome existing tunable filter tuned speed slow, tuning voltage is high, the shortcoming that loss is large.
The technical solution of the utility model is: a kind of substrate integration wave-guide tunable filter loading PIN pipe, comprises the first metal copper clad layers, dielectric substrate, the second metal copper clad layers that stack gradually from top to bottom; In order to form tunable filter of the present utility model, by printed-circuit board manufacturing technology, required metal pattern is processed to form to the first metal copper clad layers, second metal copper clad layers is do not do the complete layers of copper of processing, to dielectric substrate punching, and surface metalation process formation plated-through hole array is done to hole; Plated-through hole array has run through table section on substrate integration wave-guide and has been connected with the second metal copper clad layers with dielectric substrate, surrounds symmetrical rectangle tunable cavity one, resonant cavity two; First metal copper clad layers comprises table section on substrate integration wave-guide, be positioned at the table section left and right sides on substrate integration wave-guide and be attached thereto two microstrip lines, to be positioned at table section on substrate integration wave-guide inner and descend four of both sides groups of L shape coupling slots on the microstrip line, be positioned at the laterally zygomorphic two groups of U-shaped coupling slots in table section center on substrate integration wave-guide, be positioned at two groups of transverse grooves of table section inside on substrate integration wave-guide, be positioned at two pads, one, two pads two often organizing transverse groove inside; On a pin of patch capacitor and substrate integration wave-guide, table section welds together, another pin and pad one weld together, anode and the pad one of PIN diode weld together, on negative electrode and substrate integration wave-guide, table section welds together, two pins of chip inductor weld together with pad one, pad two respectively, form tuning circuit, every bar transverse groove distributes two groups of tuning circuits.
Further, microstrip line is 50 ohm microstrip of corresponding substrate.
Further, four groups of L shape coupling slots, two groups of U-shaped coupling slots, two groups of transverse grooves are the first metal copper clad layers corrosion and are formed.
Further, described plated-through hole array between L shape coupling slot opposing upper and lower, interrupt between U-shaped coupling slot opposing upper and lower, forms continuous coupled window.
Advantage of the present utility model and beneficial effect:
(1) the utility model has the fast feature of tuned speed, usually based on the tunable filter tuned speed of yttrium iron garnet at the millisecond order of magnitude, and the switch off time of PIN pipe is nanosecond rank;
(2) tuning voltage of the present utility model is low, because based on variable capacitance diode or the tunable filter of barium strontium electric capacity, its tuning voltage is generally tens volts, and the bias voltage of PIN pipe is only 0.9V;
(3) the utility model has less insertion loss, because the quality factor of substrate integration wave-guide are higher than microstrip line, therefore can reduce the overall insertion loss of tunable filter to a certain extent.
Accompanying drawing explanation
Fig. 1 is schematic side view of the present utility model
Fig. 2 is the circuit structure diagram of the first metal copper clad layers of the present utility model
Fig. 3 is the partial enlarged drawing of tuning circuit of the present utility model
Fig. 4 is test result of the present utility model
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described further: as shown in Figure 1, comprises the first metal copper clad layers 1, dielectric substrate 2, the second metal copper clad layers 3 that stack gradually from top to bottom; In order to form tunable filter of the present utility model, by printed-circuit board manufacturing technology, required metal pattern is processed to form to the first metal copper clad layers 1, second metal copper clad layers 3 is do not do the complete layers of copper of processing, dielectric substrate 2 is punched, and surface metalation process formation plated-through hole array 4 is done to hole; As shown in Figure 2, plated-through hole array 4 has run through table section 11 on substrate integration wave-guide and has been connected with the second metal copper clad layers 3 with dielectric substrate 2, surrounds symmetrical rectangle tunable cavity 1, resonant cavity 2 62; First metal copper clad layers 1 comprises table section 11 on substrate integration wave-guide, be positioned at table section 11 left and right sides on substrate integration wave-guide and be attached thereto two microstrip lines 12, be positioned at the inner and four groups of L shape coupling slots 13 in microstrip line about 12 both sides of table section 11 on substrate integration wave-guide, be positioned at the laterally zygomorphic two groups of U-shaped coupling slots 14 in table section 11 center on substrate integration wave-guide, be positioned at two groups of transverse grooves 15 of table section 11 inside on substrate integration wave-guide, be positioned at two pads, one 16, two pads 2 17 often organizing transverse groove 15 inside; As shown in Figure 3, on a pin of patch capacitor 51 and substrate integration wave-guide, table section 11 welds together, another pin and pad 1 weld together, anode and the pad 1 of PIN diode 52 weld together, on negative electrode and substrate integration wave-guide, table section 11 welds together, two pins of chip inductor 53 weld together with pad 1, pad 2 17 respectively, and form tuning circuit, every bar transverse groove 15 distributes two groups of tuning circuits.
Further, microstrip line 12 is 50 ohm microstrip of corresponding substrate.
Further, four groups of L shape coupling slots, 13, two groups of U-shaped coupling slots, 14, two groups of transverse grooves 15 are and corrode the first metal copper clad layers 1 and formed.
Further, described plated-through hole array 4 interrupts between L shape coupling slot 13 opposing upper and lower, between U-shaped coupling slot 14 opposing upper and lower, forms continuous coupled window.
The principle of the technical solution of the utility model is: microstrip line 12 is by coupling slot 13 feed-in of L shape and feed out resonant cavity 1 resonant cavity 2 62, be coupled by U-shaped coupling slot 14 between resonant cavity 1 with resonant cavity 2 62, regulate the length of coupling slot to change stiffness of coupling, thus change filter bandwidht.Transverse groove 15 is carried in the resonance frequency that resonant cavity can change resonant cavity, and the effect of patch capacitor 51 to be stopping direct currents logical exchanges, the effect of chip inductor 53 logically exchanges stopping direct current.When pad 2 17 connects positive voltage time, PIN diode 52 conducting, when pad 2 17 is zero offset, PIN diode 52 disconnects.Each resonant cavity is loaded with two PIN diode 52, can obtain four kinds of different resonance frequencys.Two diode operation states on filter both sides are identical, and two middle diodes have identical operating state, therefore change the conducting situation of PIN diode 52, and final filter can be operated in four different centre frequencies.
For further illustrating the exploitativeness of technique scheme, provide a specific design example below, a kind of substrate integration wave-guide tunable filter loading PIN pipe.Dielectric substrate uses thickness to be 0.8mm, and dielectric constant is the F4B substrate of 2.5.Suppose that diode current flow is 1, cut-off is 0, when the state of filter four diodes is 0000,0110,1001, when 1111, as shown in Figure 4, the filter centre frequency recorded is respectively 1.78 to its test result, 1.82,1.88,1.91GHz, corresponding insertion loss is 1.63,2.32,2.28,2.4dB, corresponding bandwidth is 94,90,99,98MHz, return loss is all better than 10dB.Whole circuit is of a size of long 112mm, wide 56mm, high 0.8mm.
Those of ordinary skill in the art will appreciate that, embodiment described here is to help reader understanding's principle of the present utility model, should be understood to that protection range of the present utility model is not limited to so special statement and embodiment.Those of ordinary skill in the art can make according to these technology enlightenment disclosed in the utility model and variously not depart from other various concrete distortion and combination of the present utility model, and these distortion and combination are still in protection range of the present utility model.
Claims (4)
1. load a substrate integration wave-guide tunable filter for PIN pipe, it is characterized in that: comprise the first metal copper clad layers (1), dielectric substrate (2), the second metal copper clad layers (3) that stack gradually from top to bottom, in order to form tunable filter of the present invention, by printed-circuit board manufacturing technology, required metal pattern is processed to form to the first metal copper clad layers (1), second metal copper clad layers (3) is not for do the complete layers of copper of processing, to dielectric substrate (2) punching, and surface metalation process formation plated-through hole array (4) is done to hole, plated-through hole array (4) has run through table section (11) on substrate integration wave-guide and has been connected with the second metal copper clad layers (3) with dielectric substrate (2), surrounds symmetrical rectangle tunable cavity one (61), resonant cavity two (62), first metal copper clad layers (1) comprises table section on substrate integration wave-guide (11), be positioned at (11) left and right sides of table section on substrate integration wave-guide and be attached thereto two microstrip lines (12), be positioned at the inner and four groups of L shape coupling slots (13) in microstrip line (12) both sides up and down of table section on substrate integration wave-guide (11), be positioned at the laterally zygomorphic two groups of U-shaped coupling slots (14) in table section on substrate integration wave-guide (11) center, be positioned at two groups of transverse grooves (15) that table section on substrate integration wave-guide (11) is inner, be positioned at and often organize inner two pads one (16) of transverse groove (15), two pads two (17), on a pin of patch capacitor (51) and substrate integration wave-guide, table section (11) welds together, another pin and pad one (16) weld together, anode and the pad one (16) of PIN diode (52) weld together, on negative electrode and substrate integration wave-guide, table section (11) welds together, two pins of chip inductor (53) weld together with pad one (16), pad two (17) respectively, form tuning circuit, the upper distribution two groups of tuning circuits of every bar transverse groove (15).
2. the substrate integration wave-guide tunable filter of loading PIN pipe according to claim 1, is characterized in that: 50 ohm microstrip that microstrip line (12) is corresponding substrate.
3. the substrate integration wave-guide tunable filter of loading PIN pipe according to claim 1, is characterized in that: four groups of L shape coupling slots (13), two groups of U-shaped coupling slots (14), two groups of transverse grooves (15) are the first metal copper clad layers (1) corrosion and are formed.
4. the substrate integration wave-guide tunable filter of loading PIN pipe according to claim 1, it is characterized in that: described plated-through hole array (4) is interrupted between L shape coupling slot (13) opposing upper and lower, between U-shaped coupling slot opposing upper and lower (14), forms continuous coupled window.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420533132.6U CN204067525U (en) | 2014-09-16 | 2014-09-16 | A kind of substrate integration wave-guide tunable filter loading PIN pipe |
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| CN201420533132.6U CN204067525U (en) | 2014-09-16 | 2014-09-16 | A kind of substrate integration wave-guide tunable filter loading PIN pipe |
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| CN204067525U true CN204067525U (en) | 2014-12-31 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241738A (en) * | 2014-09-16 | 2014-12-24 | 电子科技大学 | Substrate integrated waveguide tunable filter for loading PIN tube |
| CN104734664A (en) * | 2015-04-03 | 2015-06-24 | 苏州大学 | Voltage-controlled oscillator with electrically controlled attenuator based on micro electromechanical system technology |
| CN105048042A (en) * | 2015-07-23 | 2015-11-11 | 南京航空航天大学 | Filter with loaded parallel double-slit structure based on substrate integrated waveguide (SIW) |
| CN106129553A (en) * | 2016-07-21 | 2016-11-16 | 杭州电子科技大学 | The full tunable filter that a kind of novel micro-strip combines with SIW structure |
| CN106252800A (en) * | 2016-07-18 | 2016-12-21 | 中国科学院微电子研究所 | Substrate integral wave guide filter of regulable center frequency and preparation method thereof |
| CN108461878A (en) * | 2018-03-15 | 2018-08-28 | 昆山鸿永微波科技有限公司 | The adjustable millimeter wave filter of selectivity outside a kind of band |
| CN108808190A (en) * | 2018-06-27 | 2018-11-13 | 电子科技大学 | A kind of adjustable electromagnetism two dimension reconfigurable filter of frequency bandwidth |
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2014
- 2014-09-16 CN CN201420533132.6U patent/CN204067525U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241738A (en) * | 2014-09-16 | 2014-12-24 | 电子科技大学 | Substrate integrated waveguide tunable filter for loading PIN tube |
| CN104241738B (en) * | 2014-09-16 | 2017-06-20 | 电子科技大学 | A kind of substrate integration wave-guide tunable filter of loading PIN pipes |
| CN104734664A (en) * | 2015-04-03 | 2015-06-24 | 苏州大学 | Voltage-controlled oscillator with electrically controlled attenuator based on micro electromechanical system technology |
| CN105048042A (en) * | 2015-07-23 | 2015-11-11 | 南京航空航天大学 | Filter with loaded parallel double-slit structure based on substrate integrated waveguide (SIW) |
| CN106252800A (en) * | 2016-07-18 | 2016-12-21 | 中国科学院微电子研究所 | Substrate integral wave guide filter of regulable center frequency and preparation method thereof |
| CN106252800B (en) * | 2016-07-18 | 2019-03-12 | 中国科学院微电子研究所 | Substrate integral wave guide filter of regulable center frequency and preparation method thereof |
| CN106129553A (en) * | 2016-07-21 | 2016-11-16 | 杭州电子科技大学 | The full tunable filter that a kind of novel micro-strip combines with SIW structure |
| CN106129553B (en) * | 2016-07-21 | 2020-08-11 | 杭州电子科技大学 | Novel microstrip and SIW structure combined fully-tunable filter |
| CN108461878A (en) * | 2018-03-15 | 2018-08-28 | 昆山鸿永微波科技有限公司 | The adjustable millimeter wave filter of selectivity outside a kind of band |
| CN108461878B (en) * | 2018-03-15 | 2019-09-13 | 昆山鸿永微波科技有限公司 | The adjustable millimeter wave filter of selectivity outside a kind of band |
| CN108808190A (en) * | 2018-06-27 | 2018-11-13 | 电子科技大学 | A kind of adjustable electromagnetism two dimension reconfigurable filter of frequency bandwidth |
| CN108808190B (en) * | 2018-06-27 | 2020-02-18 | 电子科技大学 | Electromagnetic two-dimensional reconfigurable filter with adjustable frequency bandwidth |
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| 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: 20141231 Termination date: 20150916 |
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| EXPY | Termination of patent right or utility model |