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: 2.5GHza
* 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 | 10 mil RO4350B
Circuit Board | Immersion Gold RF PCB
(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 Mobile Signal Booster. 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 1 up per panel. They're fabricated per IPC 6012 Class
2 using supplied Gerber data. Each 100 panels are packed for shipment. 

Features and benefits
the dielectric constant (DK) is low and stable, so the signal transmission is good without
Delay;
the characteristic of low dielectric loss makes the signal loss at a lower level, which makes
the signal transmission of the whole equipment excellent;
Low thermal coefficient of dielectric constant;
Low Z-Axis expansion;
SMT process is resistant to reflow soldering, resistant to rework;
Good oxidation resistance and good heat dissipation;
Meeting your PCB needs from prototype to mass production;
16000 square meter workshop;
Delivery on time: >98%  
Customer complaint rate: <1% 

Application
RF transmitter,Multi-coupler antenna,RF Identification, trunk amplifier

Parameter and data sheet

PCB SIZE	120 x 75mm=1PCS
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:	9 mil / 4 mil
Minimum / Maximum Holes:	0.25 mm / 1.0mm
Number of Different Holes:	3
Number of Drill Holes:	92
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 and BOT 12micron Minimum
Solder Mask Color:	Green, PSR-2000GT600D, Taiyo Supplied.
Solder Mask Type:	LPSM
CONTOUR/CUTTING	Routing
MARKING
Side of Component Legend	TOP and BOT.
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 0.25mm. 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