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 10mil
RO4350B with 4 Designs in Panel
(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 10mil RO4350B substrate with Tg 280C for
the application of portable antenna. It's 0.3 mm thick with 2 layers copper, black silkscreen
Directly on substrate and immersion gold on pads. the base material is from Rogers Corp
Supplying 4 types PCBs per panel. They're fabricated per IPC 6012 Class 2 using supplied
Gerber data. Each 50 panels 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;
Excellent high frequency performance due to low dielectric tolerance and loss;
Tg > 280;
16000 square meter workshop;
30000 square meter month capability;
RoHS materials;
Eligible products rate of first production: >95%  
No quality complaint is meant to save money;
No MOQ, low cost for prototypes and small runs quantity.


Application
LNA,Photocoupler, RFID,Trunk amplifier


Parameter and data sheet

PCB SIZE	65 x 190 mm=4 designs = 4 PCS
BOARD TYPE	High Frequency PCB
Number of Layers	2 layers
Surface Mount Components	YES
through Hole Components	NO
LAYER STACKUP	Copper ------- 35um(1 oz)+plate TOP layer
	RO4350B 0.254mm
	Copper ------- 35um(1 oz)+plate BOT Layer
TECHNOLOGY
Minimum Trace and Space:	5.8mil/5.4mil
Minimum / Maximum Holes:	0.4mm / 0.4mm
Number of Different Holes:	1
Number of Drill Holes:	4
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:	1oz
Final foil internal:	0oz
Final height of PCB:	0.3mm  10%
PLATING and COATING
Surface Finish	Immersion Gold
Solder Mask Apply to:	N/A
Solder Mask Color:	N/A
Solder Mask Type:	N/A
CONTOUR/CUTTING	Routing, V-cut
MARKING
Side of Component Legend	TOP
Colour of Component Legend	Black
Manufacturer Name or Logo:	Marked on the board in a conductor and leged FREE AREA
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	Gerber RS-274-X, PCBDOC etc
SERVICE AREA	Worldwide, Globally.

Variety of PCBs

Developing