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: Double Sided RF PCB Built on 20 mil
(0.508mm) RO4350B with Immersion Gold
(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 20mil(0.508mm) RO4350B substrate with
Tg 280C for the application of GPS Antenna. It's 0.6 mm thick with black silkscreen
Substrate and immersion gold on pads. the base material is from Rogers supplying
Single up board. They're fabricated per IPC 6012 Class 2 using supplied Gerber data.
Each 50 boards are packed for shipment. 

Features and benefits
Reducing signal loss in high frequency application meets the development needs of
Communication technology;
Good high temperature and low temperature resistance(-192-260);
the temperature coefficient of dielectric constant is among the lowest of any circuit
Board material, making it ideal for temperature sensitive applications;
Strict WIP inspection and monitoring as well as working instruction;
8000 types of PCB per month;
Competitive price;
Focus on low to medium volume production;
Volume Production capability.

Application
UHF radio, WiFi amplifier, radio frequency, 4G antenna

Parameter and data sheet