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 Built on 0.508mm
RO4350B with 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 double sided high frequency PCB built on RO4350B 20 mil substrate for
the application of antenna. It's a 2 layer RF PCB board at 0.6 mm thick. It's immersion
Gold finish without solder mask. It's fabricated per IPC 6012 Class 2 using supplied Gerber
Data. Each 20 boards are packed for shipment. 

Features and benefits
RO4350B exhibits a stable dielectric constant over a broad frequency range. this makes
It an ideal substrate for broadband applications.
the characteristic of low dielectric loss makes the signal loss at a lower level, which makes
the signal transmission of the whole equipment excellent.
the temperature coefficient of dielectric constant is among the lowest of any circuit board
Material, making it ideal for temperature sensitive applications.
ENIG has long storage time ( It can be stored for more than 1 year in vacuum bag)
100% tests inclusive of electrical test and AOI inspection.
Help you focus on your core competencies on research and development, sales and
Marketing.
on-time service
Focus on low to medium volume production
Experienced sales persons provide skilled customer services.

Application
Modular oscilloscope, Multicoupler antenna, Indoor wall hanging antenna, RF
Transceiver 

Parameter and data sheet

PCB SIZE	67 x 37 mm=1UP
BOARD TYPE	Double sided PCB
Number of Layers	2 layers
Surface Mount Components	YES
through Hole Components	NO
LAYER STACKUP	Copper ------- 35um(1 oz)+plate TOP layer
	RO4350B 0.508mm
	Copper ------- 35um(1oz) + plate  BOT Layer
TECHNOLOGY
Minimum Trace and Space:	7.9 mil / 5.9 mil
Minimum / Maximum Holes:	0.4 mm / 0.4 mm
Number of Different Holes:	1
Number of Drill Holes:	1
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:	1.5 oz
Final foil internal:	N/A
Final height of PCB:	0.6 mm 0.1
PLATING and COATING
Surface Finish	Immersion gold, 87%
Solder Mask Apply to:	N/A
Solder Mask Color:	N/A
Solder Mask Type:	N/A
CONTOUR/CUTTING	Routing
MARKING
Side of Component Legend	N/A
Colour of Component Legend	N/A
Manufacturer Name or Logo:	N/A
VIA	Plated through hole(PTH), minimum size 0.4mm.
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

Variety of PCBs