The Experts below are selected from a list of 195 Experts worldwide ranked by ideXlab platform
M Chongcheawchamnan - One of the best experts on this subject based on the ideXlab platform.
-
tri band wilkinson power divider using a three section Transmission Line transformer
IEEE Microwave and Wireless Components Letters, 2006Co-Authors: M Chongcheawchamnan, S Patisang, Monai Krairiksh, I D RobertsonAbstract:The analysis and design of a triple-band equal-split Wilkinson power divider are described. The circuit proposed is well matched and isolated at three arbitrary frequencies. The design procedure for the three-section Transmission-Line transformer based equal-split Wilkinson power divider derived from the Ideal Transmission-Line model is provided. Simulated and experimental results in microstrip technology are presented to verify the idea and the derived equations
-
analysis and design of a three section Transmission Line transformer
IEEE Transactions on Microwave Theory and Techniques, 2005Co-Authors: M Chongcheawchamnan, S Patisang, S Srisathit, R Phromloungsri, S BunnjawehtAbstract:A three-section Transmission-Line transformer for matching three arbitrary frequencies and an arbitrary load is proposed. In this paper, the design parameters of the proposed Transmission Line are analyzed based on an Ideal Transmission-Line circuit model. A design procedure and some simple design equations are derived. The validity of the results is proven by numerous results from analysis, simulation, and experiment.
-
design and realisation of dual band 3 db power divider based on two section Transmission Line topology
Electronics Letters, 2003Co-Authors: S Srisathit, M Chongcheawchamnan, A WorapishetAbstract:A new dual-band 3 dB three-port power divider with arbitrary impedance terminations is proposed. The structure is composed of a two-section Transmission-Line transformer and an isolation resistor. Each Transmission Line's electrical length is /spl pi//3 at the fundamental frequency. Based on an Ideal Transmission Line model, new design equations and graphs are given. The technique is validated by the experimental results on a 3 dB 900/1800 MHz power divider with Z/sub S/=100 /spl Omega/ and Z/sub L/=50 /spl Omega/. Good performances of the proposed power combiner/divider at both frequencies are obtained.
C. Vergnolle - One of the best experts on this subject based on the ideXlab platform.
-
Criteria for wide-band radial switch design
IEEE Transactions on Microwave Theory and Techniques, 2001Co-Authors: Q. Wang, M. Lecours, C. VergnolleAbstract:This paper presents criteria for the design of radial switches, such as can be used in electronically steered circular array antennas for satellite communications mobile terminals. The choice of the switching circuit and diode used in each channel is discussed and the required inductance for the diode shunt capacitance compensation for lower insertion loss is given. Analytical formulas are derived for the general case of an Ideal Transmission-Line switch to show the dependence of the return-loss bandwidth on the choices of the Line impedance. Important optimization criteria for lower insertion loss and increased bandwidth are drawn. The criteria have been used to guide the design of economical L-band microstrip switches for use in INMARSAT/MSAT antenna arrays, using low-cost printed-circuits and surface-mount plastic-encapsulated p-i-n diodes. Implementation results for insertion loss, reflection coefficient, and isolation between channels are reported.
M. G. Stubbs - One of the best experts on this subject based on the ideXlab platform.
-
A novel compact uniplanar MMIC Wilkinson power divider with ACPS series stubs
IEEE MTT-S International Microwave Symposium Digest 2003, 2003Co-Authors: Khelifa Hettak, C. J. Verver, M. G. Stubbs, G.a. MorinAbstract:Short-circuit series stubs realized in the signal conductor of an asymmetric coplanar stripLine (ACPS) Transmission Line are investigated as a circuit element in order to achieve a significant size reduction of a MMIC Wilkinson divider. A simple Ideal Transmission Line equivalent circuit is used to model the ACPS Line/stub combination yielding good agreement with EM simulation. The stubs are then utilized to shorten the /spl lambda//4 Transmission Lines by approximately 35% in a Wilkinson divider application at 23 GHz.
-
A Novel Reduced-Size Uniplanar Wilkinson Power Divider Using ACPS Series Stubs
2000 30th European Microwave Conference, 2000Co-Authors: Tony Laneve, Khelifa Hettak, C. J. Verver, Paul Beland, M. G. StubbsAbstract:Short-circuit series stubs realized in the signal conductor of an asymmetric coplanar stripLine (ACPS) Transmission Line are investigated as a circuit element in order to achieve a significant size reduction of a Wilkinson divider. A simple Ideal Transmission Line equivalent circuit is used to model the ACPS Line/stub combination yielding good agreement with EM simulation. The stubs are then utilized to shorten the λ/4 Transmission Lines by approximately 33% in a Wilkinson divider application at 22.25 GHz.
S Patisang - One of the best experts on this subject based on the ideXlab platform.
-
tri band wilkinson power divider using a three section Transmission Line transformer
IEEE Microwave and Wireless Components Letters, 2006Co-Authors: M Chongcheawchamnan, S Patisang, Monai Krairiksh, I D RobertsonAbstract:The analysis and design of a triple-band equal-split Wilkinson power divider are described. The circuit proposed is well matched and isolated at three arbitrary frequencies. The design procedure for the three-section Transmission-Line transformer based equal-split Wilkinson power divider derived from the Ideal Transmission-Line model is provided. Simulated and experimental results in microstrip technology are presented to verify the idea and the derived equations
-
analysis and design of a three section Transmission Line transformer
IEEE Transactions on Microwave Theory and Techniques, 2005Co-Authors: M Chongcheawchamnan, S Patisang, S Srisathit, R Phromloungsri, S BunnjawehtAbstract:A three-section Transmission-Line transformer for matching three arbitrary frequencies and an arbitrary load is proposed. In this paper, the design parameters of the proposed Transmission Line are analyzed based on an Ideal Transmission-Line circuit model. A design procedure and some simple design equations are derived. The validity of the results is proven by numerous results from analysis, simulation, and experiment.
Q. Wang - One of the best experts on this subject based on the ideXlab platform.
-
Criteria for wide-band radial switch design
IEEE Transactions on Microwave Theory and Techniques, 2001Co-Authors: Q. Wang, M. Lecours, C. VergnolleAbstract:This paper presents criteria for the design of radial switches, such as can be used in electronically steered circular array antennas for satellite communications mobile terminals. The choice of the switching circuit and diode used in each channel is discussed and the required inductance for the diode shunt capacitance compensation for lower insertion loss is given. Analytical formulas are derived for the general case of an Ideal Transmission-Line switch to show the dependence of the return-loss bandwidth on the choices of the Line impedance. Important optimization criteria for lower insertion loss and increased bandwidth are drawn. The criteria have been used to guide the design of economical L-band microstrip switches for use in INMARSAT/MSAT antenna arrays, using low-cost printed-circuits and surface-mount plastic-encapsulated p-i-n diodes. Implementation results for insertion loss, reflection coefficient, and isolation between channels are reported.
