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: Dual Layer High Frequency PCB on 1.5mm
RO4350B with Green Solder Mask
(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 high frequency material with Tg 280C for the
Application of TV Antenna. It's 1.60 mm thick, white silkscreen over green solder mask on
Bottom layer. No solder mask on top layer and immersion gold covering pads on top side.
the base material is used from RogersCorp., 60mil (1.524mm) RO4350B, entire board
Supplying single up. They're fabricated per IPC 6012 Class 2 using supplied Gerber data.
Each 25 boards are packed for shipment. 

Features and benefits
Stable electrical properties verus frequency;
Low thermal coefficient of dielectric constant;
Low Z-Axis expansion;
Low in-plane expansion coefficient;
Excellent dimensional stability;
30000 square meter month capability;
8000 types of PCB per month;
Delivery on time: >98%  
Customer complaint rate: <1% 


Application
Modular oscilloscope,Multicoupler combiner,Indoor wall hanging antenna,Duplexer



Parameter and data sheet