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 RO4350B 20
Mil(0.508mm) 1oz copper
(PCB's 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 20 mil for the application of multiplier.
It's a 2 layer RF PCB board at 0.6 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
RO4003C exhibit a stable dielectric constant over a broad frequency range. this makes
It an ideal substrate for broadband applications.
Reducing signal loss in high frequency application meets the development needs of
Communication technology.
Excellent high frequency performance due to low dielectric tolerance and loss.
SMT process is resistant to reflow soldering, resistant to rework due to gold pads.
100% tests inclusive of electrical test and AOI inspection.
Right manufacturing instruction (MI), 
High technology
International approvals
Eligible products rate of first production: >95%  


Application
GPS antenna, Variocoupler, RF Identification, 4G antenna


Parameter and data sheet

PCB SIZE	151 x 27mm=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 20mil (0.508mm)
	Copper ------- 35um(1oz)+plate BOT Layer
TECHNOLOGY
Minimum Trace and Space:	6.5mil/8mil
Minimum / Maximum Holes:	0.4/4.5mm
Number of Different Holes:	6
Number of Drill Holes:	87
Number of Milled Slots:	0
Number of Internal Cutouts:	0
Impedance Control	NO
BOARD MATERIAL
Glass Epoxy:	RO4350B 20mil (0.508mm), Tg 288
Final foil external:	1.5oz
Final foil internal:	0oz
Final height of PCB:	0.6mm 0.1
PLATING and COATING
Surface Finish	Electroless nickel over Immersion Gold (ENIG)( 1 " over 100 " nickel)
Solder Mask Apply to:	Top and Bottom, 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

FPC drilling