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
Double Sided Circuit Board
(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 20 mil substrate for the application
of multicoupler combiner. It's a 2 layer RF PCB board at 0.6 mm thick. It's copper exposed
without solder mask. It's fabricated per IPC 6012 Class 2 using supplied Gerber data. Each
10 boards are packed for shipment. 


Features and benefits
Tg > 280
the characteristic of low dielectric loss makes the signal loss at a lower level, which
Makes the signal transmission of the whole equipment excellent.
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. 
ENIG has long storage time (It can be stored for more than 1 year in vacuum bag)
High voltage test, Impedance control test, micro-section, solder-ability test, 
Make delivery on time keeping 98% on-time-delivery rate.
No MOQ, low cost for prototypes and samples. 
Experienced sales persons provide skilled customer services.
UL recognized and RoHS Directive-compliant


Application
Transmitter, Video transmission gear, Low Noise Block, I/O Amplifier


Parameter and data sheet

PCB SIZE	29 x 87mm=1PCS
BOARD TYPE	High frequency PCB
Number of Layers	Double sided PCB
Surface Mount Components	YES
through Hole Components	NO
LAYER STACKUP	Copper ------- 17um(0.5oz)+plate TOP layer
	RO4350B 20mil (0.508mm)
	Copper ------- 17um(0.5oz)+plate BOT Layer
TECHNOLOGY
Minimum Trace and Space:	15mil/15mil
Minimum / Maximum Holes:	0.4/0.4mm
Number of Different Holes:	1
Number of Drill Holes:	1
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:	1oz
Final foil internal:	0oz
Final height of PCB:	0.6mm 0.1
PLATING and COATING
Surface Finish	No track finish required. Copper exposure.
Solder Mask Apply to:	No Solder mask rerquied.
Solder Mask Color:	No Solder mask rerquied.
Solder Mask Type:	No Solder mask rerquied.
CONTOUR/CUTTING	Routing
MARKING
Side of Component Legend	No silkscreen required.
Colour of Component Legend	No silkscreen required.
Manufacturer Name or Logo:	No silkscreen required.
VIA	Plated through hole(PTH)
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	Email file, Gerber RS-274-X, PCBDOC etc
SERVICE AREA	Worldwide, Globally.

Variety of PCBs

PCB board drilling