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: 2 Layer RF PCB RO4350B PCB 30 mil 1oz
Immersion Gold
(Printed circuit boards are custom-made products, the picture and parameters shown are
Just for reference)


General description
this is a type of high frequency PCB built on RO4350B 30 mil substrate for the application
of antenna. It's a 2 layer RF PCB board at 0.8 mm thick. It's immersion gold finish with green
Solder mask and white silkscreen. It's fabricated per IPC 6012 Class 2 using supplied Gerber
Data. Each 10 boards are packed for shipment. 


Features and benefits
the dielectric constant (DK) is low and stable, so the signal transmission is good without
Delay.
Delamination of copper foil will not be caused by the change of cold and heat due to the
Consistency with the thermal expansion coefficient of copper foil. 
Low water absorbability influences dielectric constant and dielectric loss less at damp.
SMT process is resistant to reflow soldering, resistant to rework due to gold pads.
Meeting your printed circuit board needs from PCB prototyping to mass volume production.
Engineering design prevents problems from occurring in pre production. 
Competitive price
UL conformed
Customer complaint rate: <1% 


Application
Low noise amplifier, VHF radio, Relay Stations, Power amplifier 

Parameter and data sheet

PCB SIZE	38 x 25mm=1PCS
BOARD TYPE
Number of Layers	Double sided PCB
Surface Mount Components	YES
through Hole Components	NO
LAYER STACKUP	Copper ------- 35um(1oz)+plate TOP layer
	RO4350B 30mil (0.762mm)
	Copper ------- 35um(1oz)+plate BOT Layer
TECHNOLOGY
Minimum Trace and Space:	78mil/30mil
Minimum / Maximum Holes:	0.8/3.5mm
Number of Different Holes:	2
Number of Drill Holes:	53
Number of Milled Slots:	0
Number of Internal Cutouts:	0
Impedance Control	NO
BOARD MATERIAL
Glass Epoxy:	RO4350B 30mil (0.762mm), Tg 288
Final foil external:	1.5oz
Final foil internal:	0oz
Final height of PCB:	0.8mm 0.1
PLATING and COATING
Surface Finish	Electroless nickel over Immersion Gold (ENIG)( 1 " over 100 " nickel)
Solder Mask Apply to:	Top,12micon Minimum.
Solder Mask Color:	Green, PSR-2000GT600D, Taiyo supplied.
Solder Mask Type:	LPSM
CONTOUR/CUTTING	Routing
MARKING
Side of Component Legend	TOP
Colour of Component Legend	White, IJR-4000 MW300, Taiyo Supplied.
Manufacturer Name or Logo:	Marked on the board in a conductor and leged FREE AREA
VIA	Plated through Hole(PTH), Via tented
FLAMIBILITY RATING	UL 94-V0 Approval MIN.
DIMENSION TOLERANCE
Outline dimension:	0.0059" (0.15mm)
Board plating:	0.0030" (0.076mm)
Drill tolerance:	0.002" (0.05mm)
TEST	100% Electrical Test prior shipment
TYPE of ARTWORK to BE SUPPLIED	Email file, Gerber RS-274-X, PCBDOC etc
SERVICE AREA	Worldwide, Globally.

Variety of PCBs


Aluminum drill