CN204067528U - A kind of plane duplexer based on quarter-wave short-circuited feeder - Google Patents
A kind of plane duplexer based on quarter-wave short-circuited feeder Download PDFInfo
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- CN204067528U CN204067528U CN201420404102.5U CN201420404102U CN204067528U CN 204067528 U CN204067528 U CN 204067528U CN 201420404102 U CN201420404102 U CN 201420404102U CN 204067528 U CN204067528 U CN 204067528U
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Abstract
The utility model discloses a kind of plane duplexer based on quarter-wave short-circuited feeder, be produced on the micro-band plate of two-sided shoe copper in the manner of a printed circuit board, the same face of the micro-band plate of described double-sided copper-clad is manufactured with respectively the feeder line port port2 for transmitting mixing electromagnetic wave signal, for transmitting the feeder line port port1 of required high band electromagnetic wave signal, for transmitting the feeder line port port3 of required low-frequency range electromagnetic wave signal, four root port feeder lines, three high band band pass filters, three low-frequency range band pass filters, the another side of the micro-band plate of this double-sided copper-clad is for covering copper ground plate.The T connector of duplexer of the present utility model adopts two short-circuit lines, the quarter-wave of two corresponding two passages of short-circuit line difference, inhibit feeder line to the interference of adjacency channel, two channel characteristic Independent adjustable, improve the isolation of duplexer, on the other hand, compare half-wavelength matching network, save space, reduce the cost of duplexer.
Description
Technical field
The present invention relates to the duplexer of planar structure, particularly a kind of plane duplexer based on quarter-wave short-circuited feeder.
Background technology
Due to the high speed development of radio communication in recent years, be no matter the burning hot or arrival of 4G of universal, the Internet of Things of 3G technology, all indicate that wireless technology will welcome a flourish peak period again.Wireless communication system of today, substantially be all the system of duplex, for time division duplex, as long as by receipts be arranged in different timeslices and just can have dealt with problems, and for Frequency Division Duplexing (FDD), in order to the quantity reducing antenna then needs the special device of design not cause mutually interference to make the electromagnetic wave of different frequency share common antenna, such device is exactly duplexer.And miniaturized, cost is low, low-loss, high-isolation duplexer also become one of study hotspot in recent years.
At present, conventional duplexer type has: waveguide duplexer, coaxial duplexer, dielectric duplexer, SAW duplexer.These duplexers respectively have pluses and minuses, and such as the time of waveguide duplexer application is also the most ripe at most, and its loss is low, operating frequency is high, but volume is large, cost is high, tuning difficulty; The dielectric loss of coaxial duplexer and ohmic loss are all very little, and stability is high, shielding is good, but in mobile communication frequency domain, its volume still seems too large; Although dielectric duplexer achieves the miniaturization of duplexer, cost is too high; SAW duplexer can realize the frequency characteristic of arbitrary accuracy, and volume is little, design flexibility is good, reliability is high, but weak point that to be cost high, loss large, high frequency bears power is low.
Nowadays the development of mobile communication technology, frequency spectrum resource is more and more deficienter.Along with the madness of portable wireless electronic product increases, the mark miniaturized, cost is low, high frequency becomes duplexer research to, and plane duplexer just in time can meet these requirements, and the duplexer of satisfactory texture can also meet the requirement compared with low-loss and high isolation degree.
Method for designing eaily relatively commonly used also by current plane duplexer is first design the band pass filter that two are positioned at low-frequency range and high band, then with T connector, the band pass filter of these two different center frequency is coupled together, again by the mutual impact be coupled that the coupling and correction two filters that adjust each port are brought with the connection of T connector, the performance of plane duplexer is made to reach the index of expection.
Summary of the invention
The object of the invention is to overcome the shortcoming of prior art and deficiency, a kind of plane duplexer based on quarter-wave short-circuited feeder is provided, the design of the micro-strip duplexer based on quarter-wave short-circuited feeder of a kind of high-isolation of this disclosure of the invention, band pass filter T connector is had to couple together by two, T connector adopts two short-circuit lines, correspond respectively to the quarter-wave of two passages, restrained effectively the interference of feeder line to adjacency channel, two channel characteristic Independent adjustable, improve the isolation between two passages, there is isolation high, volume is little, cost is low, the feature that characteristic is good.
Object of the present invention is achieved through the following technical solutions:
A kind of plane duplexer based on quarter-wave short-circuited feeder, be produced on the micro-band plate of two-sided shoe copper in the manner of a printed circuit board, the same face of the micro-band plate of described double-sided copper-clad is manufactured with respectively the feeder line port port2 for transmitting mixing electromagnetic wave signal, for transmitting the feeder line port port1 of required high band electromagnetic wave signal and the feeder line port port3 for transmitting required low-frequency range electromagnetic wave signal, first port feedline, second port feedline, 3rd port feedline and the 4th port feedline, first high band band pass filter, second high band band pass filter and third high band-pass filter of frequency band, first low-frequency range band pass filter, second low-frequency range band pass filter and the 3rd low-frequency range band pass filter, the another side of the micro-band plate of this double-sided copper-clad is for covering copper ground plate, the bottom of feeder line port port1 and the first port feedline connects and composes L-type joint, the bottom of feeder line port port3 and the second port feedline connects and composes L-type joint, 3rd port feedline and the 4th port feedline bottom connect and compose U-shaped, are connected in the middle of the lower end of U-shaped with feeder line port port2 is vertical, described first high band band pass filter, the second high band band pass filter and third high band-pass filter of frequency band are from left to right successively between the first port feedline and the 3rd port feedline, wherein the first high band band pass filter and third high band-pass filter of frequency band are U-shaped, and the second high band band pass filter is inverted u-shaped, described first low-frequency range band pass filter, the second low-frequency range band pass filter and the 3rd low-frequency range band pass filter, from left to right successively between the 4th port feedline and the 3rd port feedline, wherein the first low-frequency range band pass filter and the 3rd low-frequency range band pass filter are U-shaped, and the second low-frequency range band pass filter is inverted u-shaped, and the bottom of described feeder line port port1 and the first port feedline connects and composes L-type joint, the bottom of feeder line port port3 and the second port feedline connects and composes L-type joint, 3rd port feedline and the 4th port feedline bottom connect and compose U-shaped, first high band band pass filter, second high band band pass filter and third high band-pass filter of frequency band, first low-frequency range band pass filter, the bottom of the second low-frequency range band pass filter and the 3rd low-frequency range band pass filter is positioned on same level line.
Preferably, described first high band band pass filter, the second high band band pass filter, third high band-pass filter of frequency band form U-shaped by two bars of micro-bands of longitudinal direction being parallel to the first port feedline and the 3rd port feedline and one article of micro-band combination of transverse direction perpendicular to the first port feedline and the 3rd port feedline, and above-mentioned three high band band pass filter physical size equal and opposite in directions; Described first low-frequency range band pass filter, the second low-frequency range band pass filter, the 3rd low-frequency range band pass filter form U-shaped by two bars of micro-bands of longitudinal direction being parallel to the 4th port feedline and the second port feedline and one article of micro-band combination of transverse direction perpendicular to the 4th port feedline and the second port feedline, and above-mentioned three low-frequency range band pass filter physical size equal and opposite in directions.
Preferably, the 3rd port feedline is 1/4 λ
1the open-circuit line of length, the 4th port feedline is 1/4 λ
2the open-circuit line of length, wherein λ
1, λ
2be respectively described low-frequency range band pass filter, high band band pass filter centre frequency guide wavelength.
Preferably, described feeder line port port1, feeder line port port2 and feeder line port port3 are the matched impedance of 50 ohm.
Preferably, the physical size equal and opposite in direction of described feeder line port port1, feeder line port port2 and feeder line port port3, width is 2.2mm, and length is 5.0mm.
Preferably, the length of described first port feedline is 26.0mm, the length of the second port feedline is 22.0mm, the length of the 3rd port feedline is 26.0mm, the length of the 4th port feedline is 21.0mm, and their width is 1.0mm.
Preferably, the transverse direction of described first high band band pass filter, the second high band band pass filter, third high band-pass filter of frequency band or the width of longitudinal micro-band are 1.1mm, and the wherein length 19.6mm of longitudinal micro-band, laterally the length of micro-band is 6.0mm.
Preferably, the transverse direction of described first low-frequency range band pass filter, the second low-frequency range band pass filter and the 3rd low-frequency range band pass filter or the width of longitudinal micro-band are 1.2mm, and the wherein length 24.8mm of longitudinal micro-band, laterally the length of micro-band is 4.7mm.
Preferably, longitudinally there is coupling gap between micro-band and the first port feedline in the left side of described first high band band pass filter, and distance is 0.2mm; Longitudinally there is coupling gap between micro-band and the 3rd port feedline in the side, right side of described third high band-pass filter of frequency band, and distance is 0.2mm; Longitudinally there is coupling gap between micro-band in the left side of the longitudinal micro-band in the right side of described first high band band pass filter and the second high band band pass filter simultaneously, and distance is 2.1mm; Longitudinally there is coupling gap between micro-band in the longitudinal micro-band in right side of described second high band band pass filter and the left side of third high band-pass filter of frequency band, and distance is 2.1mm.
Preferably, longitudinally there is coupling gap between micro-band and the second port feedline in the left side of described 3rd low-frequency range band pass filter, and distance is 0.2mm; Longitudinally there is coupling gap between micro-band and the 4th port feedline in the side, left side of described first low-frequency range band pass filter, and distance is 0.2mm; Longitudinally there is coupling gap between micro-band in the left side of the longitudinal micro-band in the right side of described first low-frequency range band pass filter and the second high band band pass filter simultaneously, and distance is 2.0mm; Longitudinally there is coupling gap between micro-band in the longitudinal micro-band in right side of described second low-frequency range band pass filter and the left side of the 3rd low-frequency range band pass filter, and distance is 2.0mm.
The present invention has following advantage and effect relative to prior art:
1, in the present invention, duplexer common port is made up of two quarter-wave short-circuit lines, and compare half-wavelength matching network, size reduces greatly.
2, the present invention is by introducing quarter-wave short-circuit line, and inhibit feeder line to the interference of adjacency channel, two channel characteristic Independent adjustable, improve the isolation of duplexer.
3, in the present invention because duplexer is microstrip structure, lightweight, cost is low, be applicable to industrial mass manufacture, therefore duplexer possess structure simple, design advantage easy, cheap for manufacturing cost.
Accompanying drawing explanation
Fig. 1 is the structural representation based on the plane duplexer of quarter-wave short-circuited feeder in the present invention;
Fig. 2 be in the present invention based on the plane duplexer of quarter-wave short-circuited feeder dimensional drawing;
Fig. 3 be in the present invention based on the plane duplexer of quarter-wave short-circuited feeder scattering parameter analogous diagram;
In figure, Reference numeral is: the micro-band plate of 1-two-sided shoe copper, 2-first port feedline, 3-first high band band pass filter, 4-second high band band pass filter, 5-third high band-pass filter of frequency band, 6-the 3rd micro-strip resonantor, 7-first low-frequency range band pass filter, 8-second low-frequency range band pass filter, 9-the 3rd low-frequency range band pass filter, 10-second port feedline, 11-the 4th port feedline.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited thereto.
Embodiment
Plane diplexer structure of the present invention as shown in Figure 1, a kind of plane duplexer based on quarter-wave short-circuited feeder, be produced on the micro-band plate 1 of two-sided shoe copper in the manner of a printed circuit board, the same face of the micro-band plate 1 of described double-sided copper-clad is manufactured with respectively the feeder line port port2 for transmitting mixing electromagnetic wave signal, for transmitting the feeder line port port1 of required high band electromagnetic wave signal and the feeder line port port3 for transmitting required low-frequency range electromagnetic wave signal, first port feedline 2, second port feedline 10, 3rd port feedline 6 and the 4th port feedline 11, first high band band pass filter 3, second high band band pass filter 4 and third high band-pass filter of frequency band 5, first low-frequency range band pass filter 7, second low-frequency range band pass filter 8 and the 3rd low-frequency range band pass filter 9, the another side of the micro-band plate 1 of this double-sided copper-clad is for covering copper ground plate.
The bottom of feeder line port port1 and the first port feedline 2 connects and composes L-type joint, the bottom of feeder line port port3 and the second port feedline 10 connects and composes L-type joint, 3rd port feedline 6 and the 4th port feedline 11 bottom connect and compose U-shaped, and the lower end of U-shaped is connected with feeder line port port2 is vertical.
Described first high band band pass filter 3, second high band band pass filter 4 and third high band-pass filter of frequency band 5 are from left to right successively between the first port feedline 2 and the 3rd port feedline 6, wherein the first high band band pass filter 3 and third high band-pass filter of frequency band 5 are in U-shaped, and the second high band band pass filter 4 is in inverted u-shaped; Described first low-frequency range band pass filter 7, second low-frequency range band pass filter 8 and the 3rd low-frequency range band pass filter 9, from left to right successively between the 4th port feedline 11 and the 3rd port feedline 10, wherein the first low-frequency range band pass filter 7 and the 3rd low-frequency range band pass filter 9 are in U-shaped, and the second low-frequency range band pass filter 8 is in inverted u-shaped.
And the bottom of described feeder line port port1 and the first port feedline 2 connects and composes L-type joint, the bottom of feeder line port port3 and the second port feedline 10 connects and composes L-type joint, 3rd port feedline 6 and the 4th port feedline 11 bottom connect and compose U-shaped, first high band band pass filter 3, second high band band pass filter 4 and third high band-pass filter of frequency band 5, first low-frequency range band pass filter 7, the bottom of the second low-frequency range band pass filter 8 and the 3rd low-frequency range band pass filter 9 is positioned on same level line.
Described first high band band pass filter 3, second high band band pass filter 4, third high band-pass filter of frequency band 5 form U-shaped by two bars of micro-bands of longitudinal direction being parallel to the first port feedline 2 and the 3rd port feedline 6 and one article of micro-band combination of transverse direction perpendicular to the first port feedline 2 and the 3rd port feedline 6, and above-mentioned three high band band pass filter physical size equal and opposite in directions; Described first low-frequency range band pass filter 7, second low-frequency range band pass filter 8, the 3rd low-frequency range band pass filter 9 form U-shaped by two bars of micro-bands of longitudinal direction being parallel to the 4th port feedline 11 and the second port feedline 10 and one article of micro-band combination of transverse direction perpendicular to the 4th port feedline 11 and the second port feedline 10, and above-mentioned three low-frequency range band pass filter physical size equal and opposite in directions.
Wherein, the 3rd port feedline 6 is 1/4 λ
1the open-circuit line of length, the 4th port feedline 11 is 1/4 λ
2the open-circuit line of length, wherein λ
1, λ
2be respectively described low-frequency range band pass filter, high band band pass filter centre frequency guide wavelength.
For the first high band band pass filter 3, second high band band pass filter 4, third high band-pass filter of frequency band 5, when high band electromagnetic wave signal transmits, feeder line port port2 can by the normal feed of the 3rd port feedline 6; And in low-frequency range, feeder line port port2 is positioned at open circuit point, can not feed.In like manner, for the first low-frequency range band pass filter 7, second low-frequency range band pass filter 8, the 3rd low-frequency range band pass filter 9, when low-frequency range electromagnetic wave signal transmits, feeder line port port2 can by the normal feed of the 4th port feedline 11; And at high band, feeder line port port2 is positioned at open circuit point, can not feed.The operation principle of this design improves the isolation between height two frequency ranges, inhibits the interference between emission port and receiving port widely.
In the resonator of the band pass filter of two frequency ranges, there is with between the 3rd low-frequency range band pass filter 9 coupling with the second low-frequency range band pass filter 8, second low-frequency range band pass filter 8 with third high band-pass filter of frequency band 5, first low-frequency range band pass filter 7 with the second high band band pass filter 4, second high band band pass filter 4 in the first high band band pass filter 3, regulates the intensity of coupling can change the bandwidth of two band pass filters neatly.Centre frequency simultaneously by regulating the length of resonator can change band pass filter.
Described feeder line port port1, feeder line port port2 and feeder line port port3 are the matched impedance of 50 ohm.
As shown in Figure 2, the physical dimension in this figure is all by repeatedly testing the obvious dimensional structure of the technique effect drawn to plane diplexer structure size of the present invention.
The height of this plane duplexer sheet material used is 0.8mm, and dielectric constant is 2.55, dielectric loss angle tangent: 0.0029.
As marked in Fig. 2, the physical size equal and opposite in direction of feeder line port port1, feeder line port port2 and feeder line port port3, width is 2.2mm, and length is 5.0mm.
The length of the first port feedline 2 is 26.0mm, the length of the second port feedline 10 is 22.0mm, the length of the 3rd port feedline 6 is 26.0mm, the length of the 4th port feedline 11 is 21.0mm, and their width is equal, is 1.0mm.
The transverse direction of the first high band band pass filter 3, second high band band pass filter 4, third high band-pass filter of frequency band 5 or the width of longitudinal micro-band are 1.1mm, and the wherein length 19.6mm of longitudinal micro-band, laterally the length of micro-band is 6.0mm.
Meanwhile, the transverse direction of the first low-frequency range band pass filter 7, second low-frequency range band pass filter 8 and the 3rd low-frequency range band pass filter 9 or the width of longitudinal micro-band are 1.2mm, and the wherein length 24.8mm of longitudinal micro-band, laterally the length of micro-band is 4.7mm.
Wherein, longitudinally there is coupling gap between micro-band and the first port feedline 2 in the left side of the first high band band pass filter 3, and distance is 0.2mm; Longitudinally there is coupling gap between micro-band and the 3rd port feedline 6 in the side, right side of third high band-pass filter of frequency band 5, and distance is 0.2mm; Mark from Fig. 2 and can also draw, longitudinally there is coupling gap between micro-band in the longitudinal micro-band in right side of the first high band band pass filter 3 and the left side of the second high band band pass filter 4, and distance is 2.1mm; Longitudinally there is coupling gap between micro-band in the longitudinal micro-band in right side of the second high band band pass filter 4 and the left side of third high band-pass filter of frequency band 5, and distance is 2.1mm.
In like manner, wherein longitudinally there is coupling gap between micro-band and the second port feedline 10 in the left side of the 3rd low-frequency range band pass filter 9, and distance is 0.2mm; Longitudinally there is coupling gap between micro-band and the 4th port feedline 6 in the side, left side of described first low-frequency range band pass filter 7, and distance is 0.2mm; Mark from Fig. 2 and can also draw simultaneously, longitudinally there is coupling gap between micro-band in the longitudinal micro-band in right side of the first low-frequency range band pass filter 7 and the left side of the second high band band pass filter 8, and distance is 2.0mm; Longitudinally there is coupling gap between micro-band in the longitudinal micro-band in right side of the second low-frequency range band pass filter 8 and the left side of the 3rd low-frequency range band pass filter 9, and distance is 2.0mm.
Fig. 3 shows the scattering parameter simulation result of duplexer, and its centre frequency is respectively 2.0Ghz and 2.4Ghz.Transverse axis represents the signal frequency of micro-strip duplexer in the present invention, and the longitudinal axis represents amplitude, comprises insertion loss (S
12, S
13) amplitude, return loss (S
11, S
22, S
33) amplitude and isolation (S
23) amplitude, wherein S
11represent the return loss of port1, S
22represent the return loss of port2, S
33represent the return loss of port3, S
12represent the insertion loss of port1 and port3, S
13represent the insertion loss of port1 and port3.Insertion loss represents the relation between the input power of a signal and the power output of another port signal, and its corresponding mathematical function is: power output/input power (dB)=20*lo
g| S
21|.Return loss represents the relation between the input power of this port signal and the reflection power of signal, and its corresponding mathematical function is as follows: reflection power/incident power==20*lo
g| S
11|.
In the passband of 2.0Ghz, return loss | S
11| and S
33absolute value be greater than 20DB, insertion loss S
13absolute value be less than 1.5DB, in the passband of 2.4Ghz, return loss S
11and S
22absolute value be greater than 15DB, insertion loss S
12absolute value be less than 3DB.From the frequency range of 0-3.5Ghz, the isolation S of duplexer
23absolute value be greater than 50DB.In addition, each passband both sides of this duplexer can produce several transmission zero, substantially increase Out-of-band rejection.
Above-described embodiment is the present invention's preferably execution mode; but embodiments of the present invention are not restricted to the described embodiments; change, the modification done under other any does not deviate from Spirit Essence of the present invention and principle, substitute, combine, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (10)
1. the plane duplexer based on quarter-wave short-circuited feeder, be produced on the micro-band plate of two-sided shoe copper (1) in the manner of a printed circuit board, it is characterized in that: the same face of the micro-band plate of described double-sided copper-clad (1) is manufactured with respectively the feeder line port port2 for transmitting mixing electromagnetic wave signal, for transmitting the feeder line port port1 of required high band electromagnetic wave signal and the feeder line port port3 for transmitting required low-frequency range electromagnetic wave signal, first port feedline (2), second port feedline (10), 3rd port feedline (6) and the 4th port feedline (11), first high band band pass filter (3), second high band band pass filter (4) and third high band-pass filter of frequency band (5), first low-frequency range band pass filter (7), second low-frequency range band pass filter (8) and the 3rd low-frequency range band pass filter (9), the another side of the micro-band plate of this double-sided copper-clad (1) is for covering copper ground plate, the bottom of feeder line port port1 and the first port feedline (2) connects and composes L-type joint, the bottom of feeder line port port3 and the second port feedline (10) connects and composes L-type joint, 3rd port feedline (6) and the 4th port feedline (11) bottom connect and compose U-shaped, are connected in the middle of the lower end of U-shaped with feeder line port port2 is vertical, described first high band band pass filter (3), the second high band band pass filter (4) and third high band-pass filter of frequency band (5) are positioned between the first port feedline (2) and the 3rd port feedline (6) from left to right successively, wherein the first high band band pass filter (3) and third high band-pass filter of frequency band (5) are in U-shaped, and the second high band band pass filter (4) is in inverted u-shaped, described first low-frequency range band pass filter (7), the second low-frequency range band pass filter (8) and the 3rd low-frequency range band pass filter (9), be positioned between the 4th port feedline (11) and the 3rd port feedline (10) from left to right successively, wherein the first low-frequency range band pass filter (7) and the 3rd low-frequency range band pass filter (9) are in U-shaped, and the second low-frequency range band pass filter (8) is in inverted u-shaped, and the bottom of described feeder line port port1 and the first port feedline (2) connects and composes L-type joint, the bottom of feeder line port port3 and the second port feedline (10) connects and composes L-type joint, 3rd port feedline (6) and the 4th port feedline (11) bottom connect and compose U-shaped, first high band band pass filter (3), second high band band pass filter (4) and third high band-pass filter of frequency band (5), first low-frequency range band pass filter (7), the bottom of the second low-frequency range band pass filter (8) and the 3rd low-frequency range band pass filter (9) is positioned on same level line.
2. a kind of plane duplexer based on quarter-wave short-circuited feeder according to claim 1, it is characterized in that: described first high band band pass filter (3), second high band band pass filter (4), third high band-pass filter of frequency band (5) forms U-shaped by two bars of micro-bands of longitudinal direction being parallel to the first port feedline (2) and the 3rd port feedline (6) and one article of micro-band combination of transverse direction perpendicular to the first port feedline (2) and the 3rd port feedline (6), and above-mentioned three high band band pass filter physical size equal and opposite in directions, described first low-frequency range band pass filter (7), the second low-frequency range band pass filter (8), the 3rd low-frequency range band pass filter (9) form U-shaped by two bars of micro-bands of longitudinal direction being parallel to the 4th port feedline (11) and the second port feedline (10) and one article of micro-band combination of transverse direction perpendicular to the 4th port feedline (11) and the second port feedline (10), and above-mentioned three low-frequency range band pass filter physical size equal and opposite in directions.
3. a kind of plane duplexer based on quarter-wave short-circuited feeder according to claim 2, is characterized in that: the 3rd port feedline (6) is 1/4 λ
1the open-circuit line of length, the 4th port feedline (11) is 1/4 λ
2the open-circuit line of length, wherein λ
1, λ
2be respectively described low-frequency range band pass filter, high band band pass filter centre frequency guide wavelength.
4., according to the arbitrary described a kind of plane duplexer based on quarter-wave short-circuited feeder of claims 1 to 3, it is characterized in that: described feeder line port port1, feeder line port port2 and feeder line port port3 are the matched impedance of 50 ohm.
5. according to the arbitrary described a kind of plane duplexer based on quarter-wave short-circuited feeder of claims 1 to 3, it is characterized in that: the physical size equal and opposite in direction of described feeder line port port1, feeder line port port2 and feeder line port port3, width is 2.2mm, and length is 5.0mm.
6. according to the arbitrary described a kind of plane duplexer based on quarter-wave short-circuited feeder of claims 1 to 3, it is characterized in that: the length of described first port feedline (2) is 26.0mm, the length of the second port feedline (10) is 22.0mm, the length of the 3rd port feedline (6) is 26.0mm, the length of the 4th port feedline (11) is 21.0mm, and their width is 1.0mm.
7. a kind of plane duplexer based on quarter-wave short-circuited feeder according to claim 2, it is characterized in that: the transverse direction of described first high band band pass filter (3), the second high band band pass filter (4), third high band-pass filter of frequency band (5) or the width of longitudinal micro-band are 1.1mm, the wherein length 19.6mm of longitudinal micro-band, laterally the length of micro-band is 6.0mm.
8. a kind of plane duplexer based on quarter-wave short-circuited feeder according to claim 2, it is characterized in that: the transverse direction of described first low-frequency range band pass filter (7), the second low-frequency range band pass filter (8) and the 3rd low-frequency range band pass filter (9) or the width of longitudinal micro-band are 1.2mm, the wherein length 24.8mm of longitudinal micro-band, laterally the length of micro-band is 4.7mm.
9. according to the arbitrary described a kind of plane duplexer based on quarter-wave short-circuited feeder of claims 1 to 3, it is characterized in that: the left side of described first high band band pass filter (3) longitudinally exists coupling gap between micro-band and the first port feedline (2), and distance is 0.2mm; Longitudinally there is coupling gap between micro-band and the 3rd port feedline (6) in the side, right side of described third high band-pass filter of frequency band (5), and distance is 0.2mm; Longitudinally there is coupling gap between micro-band in the left side of the longitudinal micro-band in the right side of described first high band band pass filter (3) and the second high band band pass filter (4) simultaneously, and distance is 2.1mm; Longitudinally there is coupling gap between micro-band in the longitudinal micro-band in right side of described second high band band pass filter (4) and the left side of third high band-pass filter of frequency band (5), and distance is 2.1mm.
10. according to the arbitrary described a kind of plane duplexer based on quarter-wave short-circuited feeder of claims 1 to 3, it is characterized in that: the left side of described 3rd low-frequency range band pass filter (9) longitudinally exists coupling gap between micro-band and the second port feedline (10), and distance is 0.2mm; Longitudinally there is coupling gap between micro-band and the 4th port feedline (6) in the side, left side of described first low-frequency range band pass filter (7), and distance is 0.2mm; Longitudinally there is coupling gap between micro-band in the left side of the longitudinal micro-band in the right side of described first low-frequency range band pass filter (7) and the second high band band pass filter (8) simultaneously, and distance is 2.0mm; Longitudinally there is coupling gap between micro-band in the longitudinal micro-band in right side of described second low-frequency range band pass filter (8) and the left side of the 3rd low-frequency range band pass filter (9), and distance is 2.0mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404102.5U CN204067528U (en) | 2014-07-21 | 2014-07-21 | A kind of plane duplexer based on quarter-wave short-circuited feeder |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420404102.5U CN204067528U (en) | 2014-07-21 | 2014-07-21 | A kind of plane duplexer based on quarter-wave short-circuited feeder |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420404102.5U Withdrawn - After Issue CN204067528U (en) | 2014-07-21 | 2014-07-21 | A kind of plane duplexer based on quarter-wave short-circuited feeder |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134836A (en) * | 2014-07-21 | 2014-11-05 | 华南理工大学 | Planar duplexer based on quarter-wavelength short circuit feeder |
| RU2809940C1 (en) * | 2023-10-20 | 2023-12-19 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет науки и технологий имени академика М.Ф. Решетнёва" (СибГУ им. М.Ф. Решетнёва) | Shf diplexer |
-
2014
- 2014-07-21 CN CN201420404102.5U patent/CN204067528U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104134836A (en) * | 2014-07-21 | 2014-11-05 | 华南理工大学 | Planar duplexer based on quarter-wavelength short circuit feeder |
| RU2809940C1 (en) * | 2023-10-20 | 2023-12-19 | Федеральное государственное бюджетное образовательное учреждение высшего образования "Сибирский государственный университет науки и технологий имени академика М.Ф. Решетнёва" (СибГУ им. М.Ф. Решетнёва) | Shf diplexer |
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Granted publication date: 20141231 Effective date of abandoning: 20160504 |
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