CN105140612B - A kind of two-band electrically regulated filtering type power splitter - Google Patents
A kind of two-band electrically regulated filtering type power splitter Download PDFInfo
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- CN105140612B CN105140612B CN201510579668.0A CN201510579668A CN105140612B CN 105140612 B CN105140612 B CN 105140612B CN 201510579668 A CN201510579668 A CN 201510579668A CN 105140612 B CN105140612 B CN 105140612B
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Abstract
The invention discloses a kind of two-band electrically regulated filtering type power splitter, belong to microwave passive component technical field.Tunable filter is integrated in the inside of power splitter by the present invention, reduces the complexity and size of power splitter, and with the separately adjustable function of double frequency.The inventive schema of use is mainly the varactor of regulating element first (4) and the second varactor (8), separately adjustable to two frequency ranges from the access point of frequency modulation independence.The present invention can be used for microwave telecommunication system, the system that its advantage applies to miniaturization, low cost and multiband.
Description
Technical field
The invention belongs to microwave passive component technical field, more particularly to a kind of two-band electricity tune in microwave passive component
Filtering type power splitter.
Background technology
With the fast development of Modern Communication System, the function of microwave circuit becomes increasingly complex, requirement on electric performance increasingly
Height, while also develop towards the direction of miniaturization, lightweight, low cost.This development trend is to adapt to microwave circuit
What commercialization was required and formed.It is all the method for effective reduction circuit size that multi-functional and device the performance of device is adjustable, than
Such as：The power splitter and wave filter of same receiving and transmitting front end are coexisted in, may be integrally incorporated to together, the composition work(with filtering characteristic point
Device, if again using can conditioning technology, the size of circuit, complexity and cost can be greatly reduced.
The common power splitter for carrying filtering characteristic, is to divide additional filterings characteristic on arm in quarter-wave work(, although subtracting
Small size, but the number for the wave filter that has been multiplied.The existing power splitter with adjustable filtering characteristic, only realizes one-segment
Tunable characteristic, for needing the adjustable microwave system of multiband, it is necessary to it is multiple be operated in respectively corresponding band have can
The power splitter of filtering characteristic is adjusted, cost adds the complexity, volume and cost of power-devided circuit.
The content of the invention
The purpose of the present invention is to propose to a kind of two-band electrically regulated filtering type power splitter, the power splitter has been internally integrated filtering
Device, to realize the extra filtering characteristic of power splitter, and double frequency structure is used, load two groups of varactors, to realize the double of power splitter
Working frequency range tunable characteristic.
The technical scheme is that：
A kind of two-band electrically regulated filtering type power splitter, the input of the power splitter are made up of the ohm microstrip of a straight line 50,
After microstrip line, be divided into symmetrical two branch roads, every branch route input parallel coupled line, bending microstrip line, one the
One varactor, a pair of plated-through holes and output parallel coupled line composition；It is micro- that two first varactor one end are connected to two bendings
Among band line, the other end of two the first varactors is connected to floor by two pairs of plated-through holes；Finally by two 50 Europe of bending
Nurse microstrip line exports, and 100 Ohmic resistances are connected on the initiating terminal between two 50 ohm microstrips of bending；Input parallel coupled line and
It is the second varactor to export parallel coupled line middle, and the first patch capacitor and the second patch capacitor are close to be symmetrically distributed in second
Varactor upper and lower, the first patch capacitor and the second patch capacitor are respectively with inputting in parallel coupled line and output parallel coupled line
Heart point is connected；In the second varactor upside, pull-up resistor and direct current biasing pad are also sequentially connected, under the second varactor
Side, also it is sequentially connected bending connecting line, Chip-R and plated-through hole；Direct current biasing pad connects via pull-up resistor
In output parallel coupled line middle.
Further, it is identical with output parallel coupled line line width that microstrip line, input parallel coupled line are bent, is enclosed inside three
It is rectangular.
Further, 50 ohm of the straight line and straight line that the second varactor, the first patch capacitor and the second patch capacitor are formed
Microstrip line is conllinear, and perpendicular to Chip-R and plated-through hole, pull-up resistor, the direct current being connected with the second varactor upside
Pull-up resistor that bias pad connect with output parallel coupled line middle, direct current biasing pad formation π types.
The advantages of the present invention：
(1) present invention has the advantages of miniaturization, inexpensive.On the one hand, using double frequency technology, compared to regular grade receipts or other documents in duplicate frequency
Wave filter makes circuit size reduce half come the double frequency realized；On the other hand, the tunable component of the power splitter low frequency, share
One varactor, and the biasing circuit of varactor；So as to greatly reduce the size of integrated circuit and cost, and reduce circuit
Differential loss.
(2) power splitter of the invention has an adjustable filtering characteristic of independent two-band, the regulation between two frequency ranges, mutually
When independently, to single frequency band adjustments, another frequency band is not influenceed.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention
Fig. 2 is a kind of independently adjustable simulation result of low frequency of concrete structure of the present invention
Fig. 3 is a kind of independently adjustable simulation result of high frequency of concrete structure of the present invention
Embodiment
In order that the purpose of the present invention, solve technical problem and technical scheme become apparent from, below in conjunction with the accompanying drawings and
The present invention will be further described for specific embodiment.
Fig. 1 is the structural representation of the specific implementation example of the present invention.The power splitter is Wilkinson types work(point
Device, input are made up of the ohm microstrip 1 of a straight line 50, line width 1.1mm, after microstrip line, are divided into symmetrical two
Branch road, every branch route input parallel coupled line 2,3, first varactors 4 of bending microstrip line, a pair of and of plated-through hole 5
Output parallel coupled line 6 forms, and forms the 90 degree of phase-shifting resonance devices with filtering characteristic of left and right two, is equivalent to electrical length as four
/ wavelength, characteristic impedance are 70.7 ohm of work(branch section.Input parallel coupled line 2 and the output length of parallel coupled line 6 is equal
For 10mm.Two one end of the first varactor 4 are connected among two bending microstrip lines 3, and two pairs of plated-through holes 5 become two first
The other end for holding pipe 4 is connected to floor.Finally exported by two 50 ohm microstrips 7 of bending, 100 Ohmic resistances 17 are connected on two
Bend the initiating terminal between 50 ohm microstrips 7.It is the second change to input parallel coupled line 2 and output parallel coupled line 6 middle
Hold pipe 8, the first patch capacitor 11 and the second patch capacitor 14 are close to be symmetrically distributed in the upper and lower of the second varactor 8, the first paster
Electric capacity 11 is connected with the second patch capacitor 14 respectively at input parallel coupled line 2 with output parallel coupled line 6 center.Become second
Hold the upside of pipe 8, be also sequentially connected pull-up resistor 12 and direct current biasing pad 13, in the lower side of varactor 8, be also sequentially connected
Bending connecting line 18, Chip-R 9 and plated-through hole 10.Direct current biasing pad 15 is connected to output via pull-up resistor 16
The middle of parallel coupled line 6.First varactor 4 and the second varactor 8 only influence even mould resonant frequency and Qi Mo resonance frequency respectively
Rate, therefore, this filtering type power splitter can be operated in the two-band of Independent adjustable.Plated-through hole diameter is 0.5mm.
Further, it is identical with the output line width of parallel coupled line 6 that microstrip line 3, input parallel coupled line 2 are bent, is
0.5mm, 4.8mm × 36mm rectangle is surrounded inside three.
Further, the straight line and straight line 50 that the second varactor 8, the first patch capacitor 11 and the second patch capacitor 14 are formed
Ohm microstrip 1 is conllinear, and perpendicular to Chip-R 9 and plated-through hole 10, the pull-up being connected with the upside of the second varactor 8
Pull-up resistor 16 that resistance 12, direct current biasing pad 13 and output parallel coupled line 6 middle connect, the shape of direct current biasing pad 15
Into π types.
The medium substrate that the filtering type power splitter uses is Taconic RF-35, dielectric substrate thickness 0.508mm, on
Lower double layer of metal copper foil layer thickness is 18um, and final substrate size is 26mm × 43mm.Varactor 4 and 8 is Infineon
BB857, the adjustable extent of its capacitor's capacity is 0.5pF-6.5pF；Patch capacitor 11 and 14, capacitance is 0.5pF, is encapsulated as
0402,100 Ohmic resistance 17 is encapsulated as 0603, two pull-up resistors 12 and 16, resistance 10kohm, is encapsulated as 0603, paster electricity
Sense 9, inductance value 20nH, is encapsulated as 0603.
Fig. 2 is the independently adjustable simulation result of low frequency of this specific implementation example, it can be seen that：When fixed varactor 8
Capacitance is 0.5pF, varactor 4 from 0.5pF change to 1.5pF when, the low frequency mid-band frequency of the filtering type power splitter, from
1400MHz changes to 1700MHz, adjustable extent 300MHz, and high frequency mid-band frequency remains 3400MHz.
Fig. 3 is the independently adjustable simulation result of high frequency of this specific implementation example, it can be seen that：When fixed varactor 4
Capacitance is 0.5pF, varactor 8 from 0.5pF change to 1.0pF when, the low frequency mid-band frequency of the filtering type power splitter, remain
1700MHz, high frequency mid-band frequency change to 3400MHz, adjustable extent 400MHz from 3000MHz.
Simultaneously at all working centre frequency, isolation is superior to 15dB, and input reflection loss is better than 10dB, and low frequency is inserted
Enter loss and be less than 4.3dB, high frequency insertion loss is less than 2.0dB.
One of ordinary skill in the art will be appreciated that embodiment described here is to aid in reader and understands this hair
Bright principle, it should be understood that protection scope of the present invention is not limited to such especially statement and embodiment.This area
Those of ordinary skill can make the various other various tools for not departing from the present invention according to these technical inspirations disclosed by the invention
Body deforms and combination, and these deformations and combination are still within the scope of the present invention.
Claims (3)
- A kind of 1. two-band electrically regulated filtering type power splitter, it is characterised in that：The input of the power splitter is micro- by 50 ohm of a straight line Band line (1) is formed, and after microstrip line, is divided into symmetrical two branch roads, every branch route input parallel coupled line (2), curved Roll over microstrip line (3), first varactor (4), a pair of plated-through holes (5) and output parallel coupled line (6) composition；Two One varactor (4) one end is connected among two bending microstrip lines (3), and two pairs of plated-through holes (5) are by two the first varactors (4) The other end be connected to floor；Finally two are connected on by two 50 ohm microstrips of bending (7) outputs, 100 Ohmic resistances (17) Bend the initiating terminal between 50 ohm microstrips (7)；Input parallel coupled line (2) and output parallel coupled line (6) middle are Second varactor (8), the first patch capacitor (11) and the second patch capacitor (14) are close to be symmetrically distributed on the second varactor (8) Lower section, the first patch capacitor (11) and the second patch capacitor (14) are respectively with inputting parallel coupled line (2) and output parallel coupling Line (6) central point is connected；In the second varactor (8) upside, pull-up resistor (12) and direct current biasing pad are also sequentially connected (13), in the second varactor (8) lower side, bending connecting line (18), Chip-R (9) and plated-through hole are also sequentially connected (10)；Direct current biasing pad (15) is connected to output parallel coupled line (6) middle via pull-up resistor (16).
- A kind of 2. two-band electrically regulated filtering type power splitter according to claim 1, it is characterised in that：Bending microstrip line (3), It is identical with output parallel coupled line (6) line width to input parallel coupled line (2), rectangle is surrounded inside three.
- A kind of 3. two-band electrically regulated filtering type power splitter according to claim 1, it is characterised in that：Second varactor (8), The straight line that first patch capacitor (11) and the second patch capacitor (14) are formed with the ohm microstrip of straight line 50 (1) collinearly, and vertically It is inclined in Chip-R (9) and plated-through hole (10), pull-up resistor (12), the direct current being connected with the second varactor (8) upside Put pad (13) and export pull-up resistor (16), direct current biasing pad (15) the formation π that parallel coupled line (6) middle connects Type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510579668.0A CN105140612B (en) | 2015-09-12 | 2015-09-12 | A kind of two-band electrically regulated filtering type power splitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510579668.0A CN105140612B (en) | 2015-09-12 | 2015-09-12 | A kind of two-band electrically regulated filtering type power splitter |
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| Publication Number | Publication Date |
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| CN105140612A CN105140612A (en) | 2015-12-09 |
| CN105140612B true CN105140612B (en) | 2018-02-13 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112448113A (en) * | 2020-11-19 | 2021-03-05 | 南京邮电大学 | Butterfly-shaped microstrip filtering power divider |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5489880A (en) * | 1993-08-10 | 1996-02-06 | Com Dev Ltd. | Power divider/combiner with lumped element bandpass filters |
| CN102403562A (en) * | 2011-11-02 | 2012-04-04 | 华南理工大学 | Powder divider integrating a dual-frequency bandpass filter |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101224762B1 (en) * | 2011-07-18 | 2013-01-21 | 경희대학교 산학협력단 | Ultra wideband power divider/combiner with rejection band |
-
2015
- 2015-09-12 CN CN201510579668.0A patent/CN105140612B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5489880A (en) * | 1993-08-10 | 1996-02-06 | Com Dev Ltd. | Power divider/combiner with lumped element bandpass filters |
| CN102403562A (en) * | 2011-11-02 | 2012-04-04 | 华南理工大学 | Powder divider integrating a dual-frequency bandpass filter |
Non-Patent Citations (2)
| Title |
|---|
| "Compact Microstrip Electronically Tunable Power Divider With Chebyshev Bandpass Response";Chi-Feng Chen 等;《Proceedings of Asia-Pacific Microwave Conference 2014》;20141231;第1291-1293页 * |
| "Frequency-selectable dual-band Wilkinson divider/combiner";Mitchai Chongcheawchamnan 等;《IET Microwaves, Antennas & Propagation》;20131231;第7卷(第10期);第836-842页 * |
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| Publication number | Publication date |
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| CN105140612A (en) | 2015-12-09 |
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