General Layout Guidelines for RF and Mixed-Signal PCBs

PCB LAYOUT GUIDELINE

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(1) 20H Rule

The 20-H rule is a printed circuit board layout guideline. On boards with power and ground planes, the fringing field at the edges of the board is contained by backing the edge of the power plane away from the edge of the board by a distance equal to 20 times the separation distance between the planes.

(2) RF/Microwave Corners

PCB Impedance Calculator (Stripline)

	PCB Impedance Calculator (Stripline) Er: PlaneToPlaneDistance: mils TraceWidth: mils TraceHeight: mils Calculated Impedance: Ohm

WIRELESS LAN THROUGHPUT TESTING

Recommended Softwares:

1. JPerf 2.0.2
2. NetStress Benchmarking Tool for Wired and Wireless Networks 
3. TamoSoftware Throughput Test Tool

EIRP Calculator

EIRP Calculator

Peak Transmit Power:	dBm
No. of Antenna:
Antenna Gain:	dBi
EIRP Value:	dBm

PCB UNIT CONVERTER

PCB Unit Converter

Millimeters:		Mils:		Inches:
Mils:		Millimeters:		Inches:
Inches:		Millimeters:		Mils:

IEEE802.11 WLAN Standard

802.11 Standard

Standard	Year	Band	Bandwidth	Modulation	Antenna Technology	Data Rate
802.11b	1999	2.4GHz	20MHz	CCK	---	11Mbps
802.11a	1999	5GHz	20MHz	OFDM		54Mbps
802.11g	2003	2.4GHz	20MHz	CCK, OFDM		54Mbps
802.11n	2009	2.4GHz, 5GHz	20MHz, 40MHz	OFDM (Upto 64-QAM)	MIMO with up to Four spatial streams, beamforming	600Mbps
802.11ac		5GHz	40MHz, 80MHz, 160MHz	OFDM (Upto 256-QAM)	MIMO, MU-MIMO with up to eight spatial streams, beamforming	6.93Gbps
802.11ad		2.4GHz, 5GHz, 60GHz	2.16GHz	SC/OFDM	Beamforming	6.76Gbps

Please download 802.11 WLAN Standard for more details.

PCB Impedance Calculator (MicroStrip)

	PCB Impedance Calculator (Microstrip) Er: TraceToPlaneDistance: mils TraceWidth: mils TraceHeight: mils Calculated Impedance: Ohm

dBm-mW Conversion Calculator

	mW - dBm Power Conversion Transmit Power in MilliWatts : Total: dBm - mW Power Conversion Enter Power of Card in dBm : Total: