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 Bare Board | 10 mil
RO4350B Printed Circuit Board | Immersion Gold HF
PWB
(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 10mil RO4350B substrate with Tg 280C for the
Application of 4G Coverage. It's 0.3mm thick finished with white silkscreen over green solder
Mask and immersion gold are plated on pads. the base material is used from Rogers Corp.,
Entire board supplying 2 up per panel. They're fabricated per IPC 6012 Class 2 using supplied
Gerber data. Each 50 panels are packed for shipment. 

Features and benefits
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;
Excellent surface planarity, helpful for PCBs with BGA packages to reduce failure rate
during assembly and soldering;
Excellent surface planarity for CSP mounted components to reduce failure rate during
Assembly and soldering;
Engineering design prevents problems from occurring in pre-production;
ISO9001, ISO14001, UL certified manufacturing factory;
Quick Lead time: 3-5 days;
Small quantity order is accepted;

Application
Modular oscilloscope,Optical coupler, Indoor wall hanging antenna, RF transceiver 

Parameter and data sheet

PCB SIZE	30 x 20mm=2PCS
BOARD TYPE	Double sided PCB
Number of Layers	2 layers
Surface Mount Components	YES
through Hole Components	YES
LAYER STACKUP	Copper ------- 18um(0.5 oz)+plate TOP layer
	RO4350B 0.254mm
	Copper ------- 18um(0.5oz) + plate  BOT Layer
TECHNOLOGY
Minimum Trace and Space:	5 mil / 4 mil
Minimum / Maximum Holes:	0.2 mm / 0.2mm
Number of Different Holes:	1
Number of Drill Holes:	15
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:	1.0 oz
Final foil internal:	N/A
Final height of PCB:	0.3 mm 0.1
PLATING and COATING
Surface Finish	Immersion gold
Solder Mask Apply to:	TOP 12micron 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 brand
Manufacturer Name or Logo:	Marked on the board in a conductor and leged FREE AREA
VIA	Plated through hole(PTH), minimum size 0.22mm. Via tented.
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