scholarly journals Unlimited Power Division Ratio of Microstrip Balanced-to-Unbalanced Gysel-Type Arbitrary Power Divider

Electronics ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 1124
Author(s):  
Zihui Zhu ◽  
Zhongbao Wang ◽  
Ye Fu ◽  
Shaojun Fang ◽  
Hongmei Liu ◽  
...  
Keyword(s):  
Characteristic Impedance ◽  
Power Divider ◽  
Power Dividers ◽  
Arbitrary Power ◽  
Division Ratio ◽  
Mode Suppression ◽  
High Impedance ◽  
Form Design ◽  
The Common ◽  
Good Agreement

A microstrip balanced-to-unbalanced (BTU) Gysel-type arbitrary power divider without the high-impedance transmission-line (TL) section is proposed to eliminate the power division ratio (PDR) limit of the conventional microstrip BTU power dividers. The proposed circuit includes five moderate-impedance TLs having the same characteristic impedance in addition to a grounded resistor. The arbitrary PDR is easily obtained by varying the electrical length of the TLs without changing the characteristic impedances, especially the large PDR, which is difficult to achieve by means of conventional BTU power dividers. When the PDR is ∞, the proposed circuit becomes a balun. The closed-form design equations are derived and discussed. To verify the proposed circuit, three prototypes I, II, and III are designed and fabricated for PDRs of 10 dB, 20 dB, and ∞ dB, respectively. The measured PDRs are in good agreement with the simulations. The measured isolation between the output ports is higher than 31 dB for prototypes I and II. The measured insertion loss of the balun prototype is 0.194 dB. Furthermore, the common-mode suppression of greater than 32 dB and the return loss of higher than 22 dB are obtained for various PDRs.

Tunable balanced to balanced filtering power divider with high common-mode suppression

Frequenz ◽  
2020 ◽  
Vol 74 (7-8) ◽  
pp. 263-270
Author(s):  
Cao Zeng ◽  
Xue Han Hu ◽  
Feng Wei ◽  
Xiao Wei Shi
Keyword(s):  
Return Loss ◽  
High Selectivity ◽  
Power Divider ◽  
Center Frequency ◽  
Differential Mode ◽  
Common Mode ◽  
Mode Suppression ◽  
The Common ◽  
Equal Power ◽  
Good Agreement

AbstractIn this paper, a tunable balanced-to-balanced in-phase filtering power divider (FPD) is designed, which can realize a two-way equal power division with high selectivity and isolation. A differential-mode (DM) passband with a steep filtering performance is realized by applying microstrip stub-loaded resonators (SLRs). Meanwhile, six varactors are loaded to the SLRs to achieve the center frequency (CF) and bandwidth adjustment, respectively. U-type microstrip lines integrated with stepped impedance slotline resonators are utilized as the differential feedlines, which suppress the common-mode (CM) intrinsically, making the DM responses independent of the CM ones. A tuning center frequency from 3.2 to 3.75 GHz and a fractional bandwidth (12.1–17.6%) with more than 10 dB return loss and less than 2.3 dB insertion loss can be achieved by changing the voltage across the varactors. A good agreement between the simulated and measured results is observed. To the best of authors' knowledge, the proposed balanced-to-balanced tunable FPD is first ever reported.

Seven-Port Unequal Power Divider with Broadband and Large Division Ratio Characteristics Based on T-shape Stub

Frequenz ◽  
2017 ◽  
Vol 71 (11-12) ◽  
Author(s):  
Xing Jiang ◽  
Jia Wei ◽  
Lin Peng ◽  
Shao-Yu Tang
Keyword(s):  
Line Width ◽  
Theoretical Basis ◽  
Matrix Algebra ◽  
Characteristic Impedance ◽  
Power Divider ◽  
Division Ratio ◽  
Conventional Design ◽  
Good Agreement

AbstractA broadband seven-port unequal power divider with large division ratio is designed based on the technique of T-shape stub. A T-shape stub is introduced to replace the conventional design for high characteristic impedance line in realization due to very small line width. The theoretical basis of the proposed T-shape stub is analyzed in detail using the Method of Matrix Algebra Analysis. The proposed design is simulated, fabricated and measured. The measured results are in good agreement with the simulated ones, and a large division ratio of 1:6 is achieved. The operation bandwidth of the proposed design is about 12 % (from 4.8 to 5.4 GHz).

Wideband filtering power divider with deep and wide stopband

2018 ◽  
Vol 10 (9) ◽  
pp. 1011-1018
Author(s):  
Pengcheng Zhang ◽  
Xianqi Lin ◽  
Cong Tang ◽  
Yuan Jiang ◽  
Yong Fan
Keyword(s):  
Transmission Line ◽  
Closed Form ◽  
Design Principle ◽  
Power Divider ◽  
Power Dividers ◽  
Transmission Zeros ◽  
Quarter Wavelength ◽  
Rejection Level ◽  
Form Design ◽  
Good Agreement

AbstractIn this study, wideband bandpass power divider with good out-of-band performance is proposed. Two bandpass filters (BPFs) are utilized to substitute the quarter-wavelength transmission line in conventional Wilkinson power divider. A resistor is specially arranged between two BPFs for a good isolation. Four transmission zeros (TZs) are found to be distributed in the lower and upper stopband of the power divider. Moreover, the locations of two TZs can be shifted by tuning the impedance ratio of the center-loaded open stub, which is propitious to improve the frequency selectivity. Even- and odd-mode methods are applied to analyze the proposed power divider and closed-form design formulas are obtained. Finally, two prototype power dividers with measured rejection level in the upper stopband larger than 29.1 and 32 dB till to 2.7f0 and 2.69f0, respectively, are designed and fabricated to testify the proposed design concept. Good agreement between the simulated and measured results is observed, validating the validity of the proposed design principle.

Compact power divider based on half mode substrate integrated waveguide (HMSIW) with arbitrary power dividing ratio

2016 ◽  
Vol 9 (3) ◽  
pp. 515-521 ◽  
Author(s):  
Ali-Reza Moznebi ◽  
Kambiz Afrooz
Keyword(s):  
High Power ◽  
Three Dimensional ◽  
Power Divider ◽  
Substrate Integrated Waveguide ◽  
Arbitrary Power ◽  
Division Ratio ◽  
Planar Circuits ◽  
3D Em ◽  
Good Agreement ◽  
Microstrip Feed

Design and realisation of a compact power divider based on half mode substrate integrated waveguide (HMSIW) with an arbitrary power dividing ratio is presented. This design consists of a substrate integrated waveguide (SIW) transition, two bisected HMSIW transitions by a gap, an SIW-to-microstrip transition, and two microstrip feed lines. In addition, a resistor is attached between two HMSIW transitions. To adjust the power division ratio, four parameters are introduced. Furthermore, four graphs are plotted using a three-dimensional electronmagnetic (3D EM) simulator to graphically determine the introduced parameters. In this study, three circuits with power division ratios of 1:1, 1:4, and 1:8 are simulated using the 3D EM simulator and fabricated on a Rogers RO4003C substrate. The results show a good agreement between the simulated and measured results. The measured results display these circuits (1:1, 1:4, and 1:8) have the bandwidths of 70, 36, and 40%, respectively. Moreover, the proposed structures (1:1, 1:4, and 1:8) are compact and their overall sizes are$1.13 \times 1.04\lambda _g^2 $,$0.96 \times 0.91\lambda _g^2 $, and$0.81 \times 0.78\lambda _g^2 $, respectively. These structures have the advantages of the compactness in size, wide bandwidth, high power division ratio (from 1:1 to 1:16), and compatibility with planar circuits.

scholarly journals Compact Unequal Power Divider with Filtering Response

2015 ◽  
Vol 2015 ◽  
pp. 1-7
Author(s):  
Wei-Qiang Pan ◽  
Jin-Xu Xu ◽  
Kai Xu Wang ◽  
Xiao Lan Zhao
Keyword(s):  
Antenna Arrays ◽  
Coupling Strength ◽  
Characteristic Impedance ◽  
Power Divider ◽  
Power Dividers ◽  
Division Ratio ◽  
Transmission Zeros ◽  
Compact Size ◽  
Filtering Function ◽  
Wilkinson Power Dividers

We present a novel unequal power divider with bandpass responses. The proposed power divider consists of five resonators and a resistor. The power division ratio is controlled by altering the coupling strength among the resonators. The output ports have the characteristic impedance of 50 Ω and impedance transformers in classical Wilkinson power dividers are not required in this design. Use of resonators enables the filtering function of the power divider. Two transmission zeros are generated near the passband edges, resulting in quasielliptic bandpass responses. For validation, a 2 : 1 filtering power divider is implemented. The fabricated circuit size is 0.22λg × 0.08λg, featuring compact size for unequal filtering power dividers, which is suitable for the feeding networks of antenna arrays.

scholarly journals Multi-way differential power divider with microstrip output interfaces

2020 ◽  
Vol 71 (4) ◽  
pp. 274-280
Author(s):  
Cheng-Guang Sun ◽  
Jia-Lin Li ◽  
Baidenger Agyekum Twumasi
Keyword(s):  
Characteristic Impedance ◽  
Theoretical Data ◽  
Power Divider ◽  
Center Frequency ◽  
Impedance Bandwidth ◽  
Power Dividers ◽  
Quarter Wavelength ◽  
Insertion Losses ◽  
Better Than ◽  
Good Agreement

AbstractThe design and implementation of planar multi-way differential power dividers remain a challenge in terms of the compactness and especially, for the achievable characteristic impedance of the quarter-wavelength transformer when considering large number of outputs. In this work, the double-sided parallel stripline is recommended to realize such a power divider with out-of-phase outputs, and explicit design methods are provided. The proposed multi-way power divider was developed without the use of lump elements on a single substrate. For system applications, a prototype operating at 41.6 MHz with 12 pairs of out-of-phase outputs that utilize the microstrip line as the output interfaces was fabricated and examined. At the center frequency of 41.6MHz, the developed prototype measured insertion losses akin to 14.3 dB as compared with the theoretical data of 13.8 dB. The attainable impedance bandwidth ranges from 10 MHz to 80 MHz under a magnitude imbalance of ±0.3 dB. The isolations of the adjacent outputs are about 13.1 dB as compared with the theoretical values of 14.428 dB, and are better than 34 dB for more distant ones. Parameter measurements are in good agreement with the numerical predications, thus demonstrating the realization of the proposed multi-way power divider.

A dual-band unequal power divider with flexible choice of implementation

2015 ◽  
Vol 8 (2) ◽  
pp. 171-178 ◽  
Author(s):  
Cong Tang ◽  
Yong Fan ◽  
Kaijun Song
Keyword(s):  
Power Divider ◽  
Dual Band ◽  
Mode Analysis ◽  
Asymmetric Structure ◽  
Analysis Method ◽  
Power Dividers ◽  
Design Concepts ◽  
Form Design ◽  
Wide Operating ◽  
Good Agreement

In this paper, a new asymmetric structure is proposed for the dual-band unequal application, in which both open- and short-ended stubs are applied. Closed-form design equations are obtained for the proposed power divider using the modified even- and odd-mode analysis method. It is observed that the proposed power divider can operate at high frequency ratio from 2.3 to 3.7 and has a wide operating band. Besides, this proposed circuit can offer flexibility in fabrication. For verification, two power dividers operate at 1/2.5 GHz with different values of line impedance are fabricated and tested. There is good agreement between simulation and experimental results, validating the proposed design concepts.

A novel balanced-to-balanced power divider based on three-line coupled structure

2019 ◽  
Vol 11 (2) ◽  
pp. 139-142
Author(s):  
Zhen Tan ◽  
Qing-Yuan Lu ◽  
Jian-Xin Chen
Keyword(s):  
Equivalent Circuit ◽  
Design Procedure ◽  
Power Divider ◽  
Equivalent Circuits ◽  
Differential Mode ◽  
Detailed Design ◽  
Symmetrical Structure ◽  
The Common ◽  
First Time ◽  
Good Agreement

AbstractThis paper presents a novel balanced-to-balanced power divider (PD) based on a simple and compact three-line coupled structure for the first time. By bisecting the proposed symmetrical structure, the differential mode (DM) and the common mode (CM) equivalent circuits can be obtained for analysis. The DM equivalent circuit exhibits a three-line in-phase power dividing response, and then a resistor is added between the two outputs for achieving good isolation. Meanwhile, the CM equivalent circuit shows a three-line all-stop response so that the CM suppression in this design does not need to be considered. Accordingly, the detailed design procedure of the DM PD is given. For demonstration, a prototype centered at 1.95 GHz is designed, fabricated, and measured. The simulated and measured results with good agreement are presented, showing low DM loss and wideband CM suppression.

RF-MEMS enabled power divider with arbitrary power division ratio

2012 ◽  
Author(s):  
Dimitra Psychogiou ◽  
ZhengAn Yang ◽  
Dimitrios Peroulis
Keyword(s):  
Rf Mems ◽  
Power Divider ◽  
Arbitrary Power ◽  
Division Ratio
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