CN101950841A - Miniaturized mixed ring based on composite transmission line structure - Google Patents
Miniaturized mixed ring based on composite transmission line structure Download PDFInfo
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- CN101950841A CN101950841A CN2010105166448A CN201010516644A CN101950841A CN 101950841 A CN101950841 A CN 101950841A CN 2010105166448 A CN2010105166448 A CN 2010105166448A CN 201010516644 A CN201010516644 A CN 201010516644A CN 101950841 A CN101950841 A CN 101950841A
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Abstract
A miniaturized mixed ring based on composite transmission line structure belongs to the technical field of microwave component. In the invention, a section of linear 270-degree phase composite shift microstrip wire is used for replacing a semicircular arc 270-degree phase shift microstrip line in the traditional mixed ring; the main body structure of the linear 270-degree phase shift composite microstrip line is a semi-closed left-and-right hands composite transmission line so that the integral structure of the component is more compact and convenient to integrate the plane circuit; the side leakage and the interference of signal energy can be reduced; in design process, by regulating the structural size of the composite transmission line, the invention can conveniently regulate the parameters of the component such as specific impedance, phase shift quantity, transmission coefficient, and the like, thereby satisfying different design requirements.
Description
Technical field
The invention belongs to electronic technology field, relate to microwave device, be specifically related to a kind of novel miniaturization hybrid ring.
Background technology
Hybrid ring is a device commonly used in the microwave system, is used for the distribution of microwave power or synthetic.Traditional microstrip structure hybrid ring comprises input/output end port microstrip line 1-1,1-2,1-3 and the 1-4 of an annular microstrip line and four same sizes as shown in Figure 1, and described four input/output end port microstrip lines are positioned at the dielectric-slab surface; Described four input/output end port microstrip line 1-1,1-2,1-3 and 1-4 link to each other with the annular microstrip line and are on the diameter extended line of annular microstrip line, wherein the tie point of input/output end port microstrip line 1-2 and 1-3 and annular microstrip line is divided into two semi arch microstrip lines with the annular microstrip line, and input/output end port microstrip line 1-1 and 1-4 are divided into three sections circular arc microstrip lines with one of them semi arch microstrip line.The characteristic impedance of described four input/output end port microstrip lines is 50 ohm, and the characteristic impedance of any circular arc microstrip line is in the described annular microstrip line
Ohm.Semi arch microstrip line length between input/output end port 1-2 and 1-3 is 3/4ths guide wavelengths, promptly produces 270 ° phase shift; The length of circular arc microstrip line is 1/4th guide wavelengths between other adjacent two ports, promptly produces 90 ° phase shift.
When above-mentioned hybrid ring uses as power splitter, be divided into two-way from the merit sub-signal for the treatment of of port one-1 input, reach port one-3 o'clock along long arc and short arc two-way respectively, because the difference of path, this two paths of signals produces 180 ° phase difference, thereby cancel each other, thereby the purpose of realize isolating in the 1-3 port; Finally, treat the merit sub-signal of merit sub-signal from port one-2 and 1-4 output two-way constant amplitude homophase.In like manner, be divided into two-way, reach port one-2 o'clock along long arc and short arc two-way respectively from the merit sub-signal for the treatment of of port one-4 input, because the difference of path, this two paths of signals produces 180 ° phase difference, thereby cancels each other, thereby realizes the purpose of isolation in the 1-2 port; Finally, treat the merit sub-signal of merit sub-signal from port one-1 and 1-3 output two-way constant amplitude homophase.
When above-mentioned hybrid ring used as power combiner, two-way constant amplitude in-phase signal from port one-2 and 1-4 input, realized isolating at port one-3 place respectively, the synthetic output at port one-1 place; In like manner, two-way constant amplitude in-phase signal from port one-1 and 1-3 input, realizes isolating at port one-2 place respectively, the synthetic output at port one-4 place.
Above-mentioned hybrid ring is subjected to the characteristic limitations of the phase place-length linear change of microstrip line, makes device size bigger, is unfavorable for the integrated of many devices; Simultaneously, because side direction radiation, the interference phenomenon of the semi arch microstrip line between port one-2 and the 1-3 are more serious, make that the semi arch microstrip line in the device can cause bigger energy loss or introduce outside noise.
Summary of the invention
The invention provides a kind ofly based on composite transmission line design of mini hybrid ring, this hybrid ring can reduce its physical dimension under the constant prerequisite of transmission characteristic, reduce the lateral leakage of signal energy, prevents the interference to the side circuit; Also can suppress simultaneously of the interference of side circuit to this hybrid ring.
Provided by the invention based on composite transmission line design of mini hybrid ring, its essence is that 270 ° of phase shift composite microbands of one section linear of employing line substitutes the 270 ° of phase shift microstrip lines of a semi arch in the conventional hybrid ring, and the agent structure of 270 ° of phase shift composite microbands of linear line is a right and left hand composite transmission line of partially closed type.
Technical solution of the present invention is as follows:
A kind of based on composite transmission line design of mini hybrid ring, as shown in Figure 2, comprise medium substrate and the hybrid ring graphic structure that is positioned at the medium substrate surface.Described hybrid ring graphic structure comprises input/output end port microstrip line C11, C12, C13 and the C14 of 270 ° of phase shift microstrip lines of one section semicircular arc and one section linear 270 ° of phase shift composite microbands line and four same sizes; 270 ° of phase shift microstrip lines of described linear 270 ° of phase shift composite microbands line and described semicircular arc join end to end, and form a closed semicircular ring shape.270 ° of phase shift microstrip lines of described linear 270 ° of phase shift composite microbands line and described semicircular arc join end to end, and form a closed semicircular ring shape; 270 ° of phase shift microstrip lines of described the first, the 4th input/output end port microstrip line C11 and C14 and semicircular arc link to each other, and wherein two tie points are divided into three sections 90 ° of phase shift microstrip lines with 270 ° of phase shift microstrip lines of semicircular arc; Described second, third input/output end port microstrip line C12 links to each other with two tie points of 270 ° of phase shift microstrip lines of semicircular arc with 270 ° of phase shift composite microbands of linear line respectively with C13.The characteristic impedance of described four input/output end port microstrip lines is 50 ohm, and the characteristic impedance of 270 ° of phase shift microstrip lines of described semicircular arc is
Ohm, the characteristic impedance of 270 ° of phase shift composite microbands of described linear line is
Ohm.
270 ° of phase shift composite microbands of described linear line comprises one section composite transmission line A1, and described composite transmission line A1 two ends connect microstrip line A21 by one section respectively or 270 ° of phase shift microstrip lines of A22 and described semicircular arc two ends link to each other.
Described composite transmission line A1 is right and left hand composite transmission line of partially closed type (as shown in Figure 3), is formed by plural at least left-right-hand composite transmission line units in series.Each left-right-hand composite transmission line unit comprises two parallel grounded metal band A13 and an interdigital capacitor A11; Described interdigital capacitor A11 is between two parallel grounded metal band A13, and interdigital capacitor A11 two ends link to each other by a metal patch A12 grounded metal band A13 parallel with two respectively; Every grounded metal band A13 links to each other with the metal ground plate at the dielectric-slab back side by row's cycle via hole that metallizes.
When hybrid ring of the present invention uses as power splitter, be divided into two-way from the merit sub-signal for the treatment of of first input/output end port C11 input, the phase difference that produces 180 ° when arriving the 3rd input/output end port C13 is respectively cancelled each other, thereby realizes isolating at the 3rd input/output end port C13 place; Finally, treat the merit sub-signal of merit sub-signal from the second input/output end port C12 and the 4th input/output end port C14 output two-way constant amplitude homophase.In like manner, the merit sub-signal of importing from the 4th input/output end port C14 for the treatment of is divided into two-way, and the phase difference that produces 180 ° when arriving the second input/output end port C12 is respectively cancelled each other, thereby realizes isolating at the second input/output end port C12 place; Finally, treat the merit sub-signal of merit sub-signal from the first input/output end port C11 and the 3rd input/output end port C13 port output two-way constant amplitude homophase.
When hybrid ring of the present invention uses as power combiner, two-way constant amplitude in-phase signal is respectively from the second input/output end port C12 and the 4th input/output end port C14 input, realize isolating synthetic output at the first input/output end port C11 place at the 3rd input/output end port C13 place; In like manner, two-way constant amplitude in-phase signal from the first input/output end port C11 and the 3rd input/output end port C13 input, realizes isolating at the second input/output end port C12 place respectively, the synthetic output at the 4th input/output end port C14 place.
Compare with the conventional hybrid ring structure, the present invention has following characteristics:
1, miniaturization hybrid ring provided by the present invention is by introducing the composite transmission line structure, make the device overall structure compact more (compare with traditional hybrid ring, device area descend near half), and transmission characteristic is unaffected, is convenient to the integrated of planar circuit.
2, miniaturization hybrid ring provided by the present invention is when reducing size, because the composite transmission line structure of being introduced is semi-enclosed, wherein the equivalence of the cycle of both sides metallization via hole is two metallic walls, thereby reduced the lateral leakage of signal energy, prevent interference, also suppressed of the interference of side circuit simultaneously this hybrid ring to the side circuit.
3, miniaturization hybrid ring provided by the present invention, in design process, size by interdigital capacitor and metal patch in the adjusting composite transmission line structure can be regulated parameters such as its characteristic impedance, phase-shift phase, transmission coefficient very easily, satisfy different designing requirements, be convenient to make, and can well be connected with the microstrip line generation, weaken the reflection that causes because of discontinuity.
Description of drawings
Fig. 1 is a conventional hybrid ring structure schematic diagram.
Fig. 2 is provided by the invention based on composite transmission line design of mini hybrid ring structural representation.
Fig. 3 is provided by the invention based on composite transmission line structural representation in the composite transmission line design of mini hybrid ring.
Fig. 4 is the S parameters simulation result based on composite transmission line design of mini hybrid ring provided by the invention.
Fig. 5 is the S parameter testing result based on composite transmission line design of mini hybrid ring provided by the invention.
Embodiment
Fig. 2 is a specific embodiment of the present invention, and preparation is on homemade F4B medium substrate, and the work centre frequency is elected 5.8GHz as.270 ° of phase shift composite microbands of linear line plays the composite transmission line A1 of main phase shift effect by one section and connection transmission line A21 and A22 that two segments play phase place fine setting effect form; Wherein connect transmission line A21 and A22 and realize that by the microstrip line of two segment equal lengths characteristic impedance is
Ohm; The characteristic impedance of composite transmission line A1 also is designed to
Ohm forms (as shown in Figure 3) by two left-right-hand composite transmission line units in series, and each left-right-hand composite transmission line unit comprises two parallel grounded metal band A13 and an interdigital capacitor A11; Described interdigital capacitor A11 is between two parallel grounded metal band A13, and interdigital capacitor A11 two ends link to each other by a metal patch A12 grounded metal band A13 parallel with two respectively; Every grounded metal band A13 links to each other with the metal ground plate at the dielectric-slab back side by row's cycle via hole that metallizes.Interdigital capacitor A11 has four cross one another metal fingers, and its overall width is identical with the width that connects microstrip line A21, A22.
Three sections 90 ° of phase shift microstrip lines are formed by one section semi arch microstrip line five equilibrium, and with closed semicircular ring shape of the end to end formation of 270 ° of phase shift composite microbands of linear line.
Fig. 3 and Fig. 4 have provided the S parameters simulation and the test result of example of the present invention respectively, the C11 port is a signal input part, as can be seen from the figure, near 5.8GHz, input signal is well distributed at C12 and two output ports of C14, simultaneously, the C11 port has less reflection coefficient, C11 port and C13 port have good isolation, this explanation, signal has formed 270 ° phase-shift phase really at composite transmission line A1, makes two paths of signals produce 180 ° of phase differences when arriving the C14 port, reaches the purpose of Signal Spacing.In addition, be subjected to the equivalent metallic walls effect of cycle plated-through hole sidewall A13, signal flow through composite transmission line A1 almost the noenergy side leakage go out, thereby realized reducing the function of side coupled interference.
Claims (2)
1. one kind based on composite transmission line design of mini hybrid ring, comprises medium substrate and is positioned at the hybrid ring graphic structure on medium substrate surface; Described hybrid ring graphic structure comprises the input/output end port microstrip line (C11, C12, C13 and C14) of 270 ° of phase shift microstrip lines of one section semicircular arc and one section linear 270 ° of phase shift composite microbands line and four same sizes;
270 ° of phase shift microstrip lines of described linear 270 ° of phase shift composite microbands line and described semicircular arc join end to end, and form a closed semicircular ring shape; 270 ° of phase shift microstrip lines of described the first, the 4th input/output end port microstrip line (C11 and C14) and semicircular arc link to each other, and wherein two tie points are divided into three sections 90 ° of phase shift microstrip lines with 270 ° of phase shift microstrip lines of semicircular arc; Described second, third input/output end port microstrip line (C12 and C13) links to each other with two tie points of 270 ° of phase shift microstrip lines of semicircular arc with 270 ° of phase shift composite microbands of linear line respectively;
The characteristic impedance of described four input/output end port microstrip lines is 50 ohm, and the characteristic impedance of 270 ° of phase shift microstrip lines of described semicircular arc is
Ohm, the characteristic impedance of 270 ° of phase shift composite microbands of described linear line is
Ohm;
270 ° of phase shift composite microbands of described linear line comprises one section composite transmission line (A1), and described composite transmission line (A1) two ends connect microstrip line (A21 or A22) by one section respectively and link to each other with 270 ° of phase shift microstrip lines of described semicircular arc two ends; Described composite transmission line (A1) is a right and left hand composite transmission line of partially closed type.
2. according to claim 1ly it is characterized in that based on composite transmission line design of mini hybrid ring described right and left hand composite transmission line of partially closed type is formed by plural at least left-right-hand composite transmission line units in series; Each left-right-hand composite transmission line unit comprises two parallel grounded metal bands (A13) and an interdigital capacitor (A11); Described interdigital capacitor (A11) is positioned between two parallel grounded metal bands (A13), and interdigital capacitor (A11) two ends link to each other by a metal patch (A12) the grounded metal band (A13) parallel with two respectively; Every grounded metal band (A13) links to each other with the metal ground plate at the dielectric-slab back side by row's cycle via hole that metallizes.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420351A (en) * | 2012-01-04 | 2012-04-18 | 镇江中安通信科技有限公司 | Power dividing phase shifter |
| CN104202005A (en) * | 2014-09-18 | 2014-12-10 | 王少夫 | Adjustable annular coupler |
| CN106128244A (en) * | 2016-08-27 | 2016-11-16 | 中国电子科技集团公司第四十研究所 | A kind of education experiment hybrid ring circuit |
| CN107464979A (en) * | 2017-09-06 | 2017-12-12 | 南京觅力觅特电子科技有限公司 | A kind of ring-like power splitter of multi-functional mixing based on microstrip line |
| CN110752439A (en) * | 2019-11-15 | 2020-02-04 | Oppo广东移动通信有限公司 | Antenna module and terminal |
| CN110797642A (en) * | 2019-11-15 | 2020-02-14 | Oppo广东移动通信有限公司 | Antenna module and terminal |
| CN110829025A (en) * | 2019-11-15 | 2020-02-21 | Oppo广东移动通信有限公司 | Antenna module, terminal and method for adjusting antenna isolation |
| CN110829023A (en) * | 2019-11-15 | 2020-02-21 | Oppo广东移动通信有限公司 | Antenna module and terminal |
Citations (1)
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| CN101286585A (en) * | 2008-05-16 | 2008-10-15 | 东南大学 | Right and left hand composite transmission line of partially closed type |
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2010
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Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101286585A (en) * | 2008-05-16 | 2008-10-15 | 东南大学 | Right and left hand composite transmission line of partially closed type |
Non-Patent Citations (2)
| Title |
|---|
| HIROSHI OKABE, CHRISTOPHE CALOZ, TATSUO ITOH: "A Compact Enhanced-Bandwidth Hybrid Ring Using an Artificial Lumped-Element Left-Handed Transmission-Line Section", 《IEEE TRANSACTIONS ON MICROWAVE AND TECHNIQUES》, vol. 52, no. 3, 31 March 2004 (2004-03-31), XP011108866, DOI: doi:10.1109/TMTT.2004.823579 * |
| XIAN QI LIN, HUI FENG MA, DI BAO, AND TIE JUN CUI: "Design and analysis of super-wide bandpass filters using a novel compact meta-structure", 《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》, vol. 55, no. 4, 30 April 2007 (2007-04-30), XP011176517, DOI: doi:10.1109/TMTT.2007.892811 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102420351A (en) * | 2012-01-04 | 2012-04-18 | 镇江中安通信科技有限公司 | Power dividing phase shifter |
| CN104202005A (en) * | 2014-09-18 | 2014-12-10 | 王少夫 | Adjustable annular coupler |
| CN106128244A (en) * | 2016-08-27 | 2016-11-16 | 中国电子科技集团公司第四十研究所 | A kind of education experiment hybrid ring circuit |
| CN107464979A (en) * | 2017-09-06 | 2017-12-12 | 南京觅力觅特电子科技有限公司 | A kind of ring-like power splitter of multi-functional mixing based on microstrip line |
| CN107464979B (en) * | 2017-09-06 | 2019-11-01 | 南京觅力觅特电子科技有限公司 | A kind of ring-like power splitter of multi-functional mixing based on microstrip line |
| CN110752439A (en) * | 2019-11-15 | 2020-02-04 | Oppo广东移动通信有限公司 | Antenna module and terminal |
| CN110797642A (en) * | 2019-11-15 | 2020-02-14 | Oppo广东移动通信有限公司 | Antenna module and terminal |
| CN110829025A (en) * | 2019-11-15 | 2020-02-21 | Oppo广东移动通信有限公司 | Antenna module, terminal and method for adjusting antenna isolation |
| CN110829023A (en) * | 2019-11-15 | 2020-02-21 | Oppo广东移动通信有限公司 | Antenna module and terminal |
| WO2021093850A1 (en) * | 2019-11-15 | 2021-05-20 | Oppo广东移动通信有限公司 | Antenna module, terminal, and antenna isolation adjusting method |
| CN110829023B (en) * | 2019-11-15 | 2021-11-02 | Oppo广东移动通信有限公司 | Antenna module and terminal |
| CN110797642B (en) * | 2019-11-15 | 2021-11-12 | Oppo广东移动通信有限公司 | Antenna module and terminal |
| CN110752439B (en) * | 2019-11-15 | 2021-11-12 | Oppo广东移动通信有限公司 | Antenna module and terminal |
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| CN101950841B (en) | 2013-04-03 |
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