ANN-based modeling of compact impedance-varying transmission lines with applications to ultra-wideband Wilkinson power dividers

2015 ◽  
Vol 25 (7) ◽  
pp. 563-572 ◽  
Author(s):  
Khair A. Alshamaileh ◽  
Mohammad J. Almalkawi ◽  
Ruthwik R. Junuthula ◽  
Vijay K. Devabhaktuni ◽  
Peter H. Aaen
Keyword(s):  
Transmission Lines ◽  
Ultra Wideband ◽  
Power Dividers ◽  
Wilkinson Power Dividers

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 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

scholarly journals Design and miniaturization of dual-band Wilkinson power dividers

2020 ◽  
Vol 71 (6) ◽  
pp. 423-427
Author(s):  
Vaidotas Barzdenas ◽  
Aleksandr Vasjanov ◽  
Gediminas Grazulevicius ◽  
Andzej Borel
Keyword(s):  
Transmission Lines ◽  
Ieee 802.11P ◽  
Dual Band ◽  
Theoretical Simulation ◽  
Power Dividers ◽  
Rlc Circuit ◽  
Measurement Results ◽  
Arbitrary Frequency ◽  
Performance Results ◽  
Wilkinson Power Dividers

AbstractIn this paper, four differently shaped Wilkinson power dividers are presented by selecting the same physical length of two-section transmission lines, dual arbitrary frequency band Wilkinson power dividers can be achieved. The 2.4 GHz (WLAN) and 5.9 GHz (DSRC IEEE 802.11p) frequency bands are selected to complement the future development of multi-band, multi-standard transceivers. To improve physical separation and electrical isolation between the two output ports a parallel RLC circuit is employed. For verification, the simulated and measured performance results of dual-band Wilkinson power dividers implemented on the Rogers 4003C laminate are presented. The measurement results for the fabricated Wilkinson power dividers were in good agreement with theoretical simulation results and show dual-band characteristics.

Stub-Loaded Wilkinson Power Divider with Performance Enhancement

2015 ◽  
Vol 24 (08) ◽  
pp. 1550127
Author(s):  
Huan-Zhu Wang ◽  
Jia-Lin Li ◽  
Jian-Peng Wang ◽  
Wei Shao ◽  
Xue-Song Yang
Keyword(s):  
Transmission Lines ◽  
Performance Enhancement ◽  
Size Reduction ◽  
Power Divider ◽  
Harmonic Suppression ◽  
Power Dividers ◽  
High Impedance ◽  
Wilkinson Power Divider ◽  
Harmonic Components ◽  
Wilkinson Power Dividers

Microstrip Wilkinson power dividers with harmonic suppression and size reduction are investigated. It is found that by loading reactive components at the middle of high impedance transmission lines (TLs), both size reduction and harmonic suppression can be achieved. Analyses and designs of such a kind of power divider are formulated in this paper. To demonstrate the design methodology, two power dividers centered at 1.8 GHz are optimally designed and confirmed by experiments. As compared with conventional Wilkinson power divider, the proposed power divider exhibits 55.6% size reduction, and high suppressions are achieved for 2nd and 3rd harmonic components. Both simulations and measurements are presented with good agreement.

Electrodynamics of ultra-wideband short-pulse processes in irregular transmission lines

2002 ◽  
Vol 47 (7) ◽  
pp. 504-506
Author(s):  
M. N. Golikov ◽  
V. I. Koroza ◽  
V. N. Mikhailov
Keyword(s):  
Transmission Lines ◽  
Short Pulse ◽  
Ultra Wideband
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