180° Power Dividers Using Metamaterial Transmission Lines

2008 ◽  
Author(s):  
Dmitry Kholodnyak ◽  
Polina Kapitanova ◽  
Stefan Humbla ◽  
Ruben Perrone ◽  
Jens Mueller ◽  
...  
Keyword(s):  
Transmission Lines ◽  
Power Dividers

Compact filtering power dividers with wide upper stopband

2019 ◽  
Vol 11 (08) ◽  
pp. 765-773
Author(s):  
Gaoya Dong ◽  
Weimin Wang ◽  
Yuanan Liu
Keyword(s):  
Transmission Lines ◽  
Wave Transmission ◽  
Coupling Matrix ◽  
Power Dividers ◽  
Full Wave ◽  
Half Wave ◽  
Coupled Lines ◽  
Quarter Wave ◽  
Simulation Results ◽  
Good Agreement

AbstractA series of compact filtering power dividers (FPDs) with simple layouts are proposed based on coupling topology. The structure of the presented FPD1 is composed of three resonators and one isolating resistor. These FPDs can be designed based on coupling matrix filter theory. A half-wave transmission line is employed in FPD2 to introduce a transmission zero (TZ) locating at 1.27f0. The FPD3 is designed by replacing quarter-wave transmission lines in FPD2 with quarter-wave coupled lines, which will produce a TZ locating at 1.96 f0 and extend upper stopband bandwidth. For verification, three FPDs centered at 2.45 GHz are fabricated and measured. All measured results are in good agreement with the full-wave simulation results.

Novel Wilkinson-Type Power Dividers Based on Metamaterial Transmission Lines

2008 ◽  
Author(s):  
Dmitry Kholodnyak ◽  
Polina Kapitanova ◽  
Irina Vendik ◽  
Stefan Humbla ◽  
Ruben Perrone ◽  
...  
Keyword(s):  
Transmission Lines ◽  
Power Dividers ◽  
Type Power

Millimeter-wave coplanar stripline power dividers

2013 ◽  
Vol 5 (3) ◽  
pp. 205-212 ◽  
Author(s):  
Chong Li ◽  
Lai Bun Lok ◽  
Ata Khalid ◽  
Vasileios Papageorgiou ◽  
James Grant ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Transmission Lines ◽  
Integrated Circuit ◽  
Wave Length ◽  
Three Dimensional ◽  
Ultra Wideband ◽  
Main Body ◽  
Phase Inverter ◽  
Power Dividers ◽  
Consistent Performance

We present the design, fabrication, and measurement of a 2-way modified Wilkinson divider constructed in a coplanar geometry exhibiting ultra wideband isolation, transmission, and port matching in the millimeter-wave frequency range. The proposed divider replaces the lumped resistor in the conventional Wilkinson divider with two quarter-wave length transmission lines, a phase inverter, and two 2Z0 resistors. Except for the three ports that are coplanar waveguides (CPWs), the main body of the divider uses coplanar striplines (CPS). The phase inverter is realized using a simple airbridge-based crossover which is compatible with a modern monolithic microwave integrated circuit process. The divider has a ring-like configuration fabricated on a 620 µm thick semi-insulating GaAs wafer using electron beam lithography (EBL) technology. Three-dimensional (3D) full-wave electromagnetic simulations have been carried out to optimize the design and investigate the possible effect of fabrication tolerance on the performance of the crossover and the divider. Two dividers working at center frequencies of 25 and 80 GHz have been designed, fabricated, and tested. They all show consistent performance in terms of bandwidth, isolation, and port matching. Experimental and simulation results are in excellent agreement.

scholarly journals Unequal Power Dividers Using Uniform Impedance Transmission Lines with Stubs

2021 ◽  
Vol 21 (1) ◽  
pp. 44-50
Author(s):  
Young-Chul Yoon ◽  
Young Kim
Keyword(s):  
Transmission Line ◽  
Transmission Lines ◽  
Control Method ◽  
Impedance Control ◽  
Short Circuit ◽  
Scaling Factor ◽  
Operating Frequency ◽  
Experimental Measurements ◽  
Power Dividers

This study proposes an impedance control method in transmission lines using open- or short-circuit stubs for unequal power dividers. The proposed method is based on the conversion of a two-port to a three-port transmission line, which is equivalent to multiplying the impedance at the internal transmission line by a scaling factor and then connecting open- or short-circuit stubs in parallel to each port on the three-port transmission line. To verify the effectiveness of the proposed method, Wilkinson and Gysel power dividers with splitting ratios of 9:1 and 5:1, respectively, using uniform impedance transmission lines with open- or short-circuit stubs at an operating frequency of 2 GHz were designed. The experimental measurements of the two power dividers agree well with those of the simulation.

scholarly journals Miniaturization of Broadband Wilkinson Power Dividers

2018 ◽  
Vol 10 (1) ◽  
pp. 241
Author(s):  
Nadera Najib ◽  
Kok Yeow You ◽  
Chia Yew Lee ◽  
Mohamad Ngasri Dimon ◽  
Nor Hisham Khamis
Keyword(s):  
Transmission Lines ◽  
Power Divider ◽  
Center Frequency ◽  
Fractional Bandwidth ◽  
Power Dividers ◽  
The Third ◽  
Operating Frequency Range ◽  
Phase Balance ◽  
Line Design ◽  
Wilkinson Power Dividers

This paper proposed three modified Wilkinson power dividers in order to achieve a size reduction and a wide bandwidth. The first structure presented the power divider using compact folded step impedance transmission lines rather than the uniform microstrip line design for operating center frequency of 3 GHz. The second structure showed the power divider with delta-stub for 2.4 GHz. Finally, the third modified structure introduced the two-section Wilkinson power divider using series-delta stub for center frequency of 2.4 GHz as well. The study managed to get an overall dimension of 15 mm × 9.5 mm for the first proposed design achieving a reduction of 75.6 % and fractional bandwidth of 133 %. For the second proposed structure, the size was 15 mm × 15 mm with a reduction of 56 % and fractional bandwidth of 56 %.  While the third design size was 17 mm × 15 mm with a reduction of 63.6 % and the structure achieved a broadband bandwidth with fractional bandwidth of 220 %.  The proposed power dividers used RT/duroid 5880 substrate with a thickness of 0.38 mm. Simulation and measurement results indicated that the modified power dividers showed equal power division, good phase balance, high isolation between output ports, and good return loss better than -12 dB covering the operating frequency range<strong>.</strong>

Compact Unequal Wilkinson Power Dividers using Planar Artificial Transmission Lines

2011 ◽  
Vol 25 (16) ◽  
pp. 2201-2211 ◽  
Author(s):  
W. Huang ◽  
C.-J. Liu ◽  
Q. Chen ◽  
Y.-N. Li ◽  
X. Chen ◽  
...  
Keyword(s):  
Transmission Lines ◽  
Power Dividers ◽  
Wilkinson Power Dividers
Sign in / Sign up

Export Citation Format

Share Document