NDLI: Low-cost and reliable geometry scaling of compact microstrip couplers with respect to operating frequency, power split ratio, and dielectric substrate parameters

Content Provider	IET Digital Library
Author	Koziel, Slawomir Bekasiewicz, Adrian
Abstract	A technique for rapid re-design of miniaturised microstrip couplers with respect to operating conditions as well as material parameters of the dielectric substrate is proposed. The dimension scaling process is based on a set of pre-optimised reference designs, obtained for an equivalent circuit model of the coupler at hand. The reference designs are utilised to construct an inverse surrogate model which – upon suitable correction – yields the optimum geometry parameter values of the structure re-designed for required values of operating conditions and substrate parameters. An iterative fine-tuning process necessary to account for the surrogate model inaccuracies is also developed. The proposed methodology is validated using a compact rat-race coupler example. The obtained results demonstrate that accurate scaling is possible at a low cost of up to three EM simulations of the structure. For a considered example, the scaling is realised within a wide range of operating conditions (1–2 GHz for the operating frequency, −3 to 0 dB for power split) and substrate parameters (0.7–1.5 mm for the thickness, and 2.5–3.5 for dielectric permittivity). Numerical results are validated experimentally.
Starting Page	1508
Ending Page	1513
Page Count	6
ISSN	17518725
Volume Number	12
e-ISSN	17518733
Issue Number	Issue 9, Jul (2018)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-map/12/9
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-map.2017.1166
Journal	IET Microwaves, Antennas & Propagation
Publisher Date	2018-03-08
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Circuit Reliability Combinatorial Mathematics Compact Microstrip Coupler Compact Rat-race Coupler Example Dielectric Material Dielectric Material And Property Dielectric Substrate Parameter Dimension Scaling Process EM Simulation Equivalent Circuit Equivalent Circuit Model Frequency 1 GHz to 2 GHz Gain -3 DB to 0 DB Geometry Interpolation And Function Approximation Inverse Problem Inverse Surrogate Model Iterative Fine-tuning Process Iterative Method Material Parameter Microstrip Couplers Microwave Circuit And Device Numerical Analysis Power Split Ratio Reliability Size 0.7 Mm to 1.5 Mm UHF Couplers Waveguide And Microwave Transmission Line Component
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Computationally-efficient surrogate-assisted dimension scaling of compact dual-band couplers

Rapid simulation-driven design of miniaturised dual-band microwave couplers by means of adaptive response scaling

Compact microstrip triplexer based on twist-modified asymmetric split-ring resonators

Miniaturised dual-band branch-line coupler

CMOS hybrid couplers with improved phase inverter structure for D-band applications

Accelerated simulation-driven design optimisation of compact couplers by means of two-level space mapping

Expedited Geometry Scaling of Compact Microwave Passives by Means of Inverse Surrogate Modeling

Design of a compact microwave absorber using parameter retrieval method for wireless communication applications

Vertically symmetric broadband lumped element CMOS directional coupler

Low-cost and reliable geometry scaling of compact microstrip couplers with respect to operating frequency, power split ratio, and dielectric substrate parameters

Similar Documents

Computationally-efficient surrogate-assisted dimension scaling of compact dual-band couplers

Rapid simulation-driven design of miniaturised dual-band microwave couplers by means of adaptive response scaling

Compact microstrip triplexer based on twist-modified asymmetric split-ring resonators

Miniaturised dual-band branch-line coupler

CMOS hybrid couplers with improved phase inverter structure for D-band applications

Accelerated simulation-driven design optimisation of compact couplers by means of two-level space mapping

Expedited Geometry Scaling of Compact Microwave Passives by Means of Inverse Surrogate Modeling

Design of a compact microwave absorber using parameter retrieval method for wireless communication applications

Vertically symmetric broadband lumped element CMOS directional coupler

Low-cost and reliable geometry scaling of compact microstrip couplers with respect to operating frequency, power split ratio, and dielectric substrate parameters