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Analyzing warp signal pulse types with serious resonance patterns when dielectric loss is high, and a design with electromagnetic field simulator of three dimensions is requested for signals that exceed increased gigabit and GHz speeds; SOHWA CORPORATION considers this the main subject. Effective analytical items are selected and the simulation is executed for high-speed digital-to-analog RF by use of three dimension electromagnetic field simulation. SOHWA CORPORATION will provide the report on the passage of the design simulation results and the hypothesis and measured results of the problems found.

Simulation design flow

Simulation items & report

	Analyze items		Report
	S parameter Smith chart Eye pattern Surface electric current, field, electromagnetism Far field intensity (3m,10m/EMI) Antenna pattern etc		Early design status Analysis result Indicate problem, hypothesis Proposal measures Analysis result after proposal measures

Simulation example image

Gigabit pattern (fluoroscopy figure)	S parameter	Examine differential offset
Connector current distribution (resonant)	2.5Gbps eye pattern	Examine parts
Circularly polarized antennas	Smith chart (inconsistent)	Antenna emission pattern

Gigabit GHz circuit/Product example

	High speed digital I/F
	XAUI FiberChannel InfiniBand GbE SerialATA SerialSCSI PCI-Express	HyperTransport Rapid-IO DVI HDMI HD-SDI USB FireWire etc
	Wireless I/F
	UltraWideBand BlueTooth WirelessUSB WirelessLAN etc
	Target product/Device
	DVD/HDD recorder Digital TV BS,CS tuner Set top box LCD display Tuner module board PC mother board HDD drive/DVD drive Video card/Graphic card Line card/LAN card Optical terminator device	Optical module Digital high vision broadcast Digital cinema Mobile/PHS PDA Keyless entry/immobilize TPMS RF-ID tag RF-IC card ETC, ITS, car navigation Evaluation board, reference board, principles trial, development etc

Printed circuit design
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