Brief Introduction
Just as its name implies, high frequency is that the frequency is relatively high, generally
Refers to the frequency of >=300 MHz (i.e. Wave length <=1m), that is, the usual radio
Frequency band. the electromagnetic wave of frequency >=1GHz is named microwave.
Typical frequencies for wireless applications:
* Current: 0.9GHz - 2GHz
* 3G systems: 2.5GHz
* Bluetooth: 2.5GHz
* GPS: 12.6GHz
* LMDS: 24GHz and 40GHz
* Automotive: 77GHz
Market: RFID, Wireless communications, base station and antenna, amplifier, military products,
Consumer electronics.  
High frequency printed circuit board or microwave PCB refers to the printed circuit board made
on the high frequency (microwave) substrate copper clad plate. the common types are: Double
-sided board, multilayer board and mixed structure.
Mixed structure includes high performance special substrate, PP sheet + ordinary performance
Board and PP sheet mixed pressing board; high frequency substrate + ordinary FR4 substrate;
High frequency substrate + metal base etc.


PCB Case: High Frequency PCB on 60 mil RO4350B with
Immersion Gold ROHS Compliant
(Printed circuit boards are custom-made products, the picture and parameters shown are just
for reference)

General description
this is a type of double sided PCB built on high frequency substrate with Tg 288C for the
Application of Long Range WiFi antenna. It's 1.60 mm thick, black silkscreen and without
Solder mask. Pads are covered by immersion gold. the base material is used from Rogers
RO4350B, entire board supplying 1 PCB up. They're fabricated per IPC 6012 Class 2 using
Supplied Gerber data. Each 25 panels are packed for shipment. 

Features and benefits
Excellent high frequency performance due to low dielectric tolerance and loss;
Stable electrical coefficient of dielectric constant;
Excellent dimensional stability;
Excellent surface planarity, helpful for PCBs with BGA packages to reduce failure rate
during assembly and soldering;
Engineering design prevents problems from occurring in preproduction;
ISO9001, ISO14001, UL certified manufacturing factory;
8000 types of PCB per month;


Application
Antenna,VHF radio, LNB, duplexer


Parameter and data sheet

PCB SIZE	100 x 100mm=1PCS
BOARD TYPE	Double sided PCB
Number of Layers	2 layers
Surface Mount Components	YES
through Hole Components	NO
LAYER STACKUP	Copper ------- 35um(1 oz)+plate TOP layer
	RO4350B 1.5mm
	Copper ------- 35um(1oz) + plate  BOT Layer
TECHNOLOGY
Minimum Trace and Space:	10 mil / 10 mil
Minimum / Maximum Holes:	0.4 mm / 0.4 mm
Number of Different Holes:	1
Number of Drill Holes:	1
Number of Milled Slots:	0
Number of Internal Cutouts:	0
Impedance Control:	no
Number of Gold finger:	0
BOARD MATERIAL
Glass Epoxy:	RO4350B Tg280, er<3.48, Rogers Corp.
Final foil external:	1.5 oz
Final foil internal:	N/A
Final height of PCB:	1.6 mm 10%
PLATING and COATING
Surface Finish	Immersion Gold
Solder Mask Apply to:	no
Solder Mask Color:	no
Solder Mask Type:	no
CONTOUR/CUTTING	Routing
MARKING
Side of Component Legend	TOP
Colour of Component Legend	Black
Manufacturer Name or Logo:	Marked on the board in a conductor and leged FREE AREA
VIA	Non-Plated through hole(PTH), minimum size 0.4mm.
FLAMIBILITY RATING	UL 94-V0 Approval MIN.
DIMENSION TOLERANCE
Outline dimension:	0.0059"
Board plating:	0.0029"
Drill tolerance:	0.002"
TEST	100% Electrical Test prior shipment
TYPE of ARTWORK to BE SUPPLIED	Gerber RS-274-X, PCBDOC etc
SERVICE AREA	Worldwide, Globally.

Variety of PCBs

V-cut depth tester