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: Microwave PCB on 60 mil RO4350B with
Immersion Gold Radar Systems
(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 60mil (1.524mm) RO4350B substrate with
Tg 280C for the application of radar systems. It's double sided board at 1.6 mm thick,
Black silkscreen directly on teflon substrate and immersion gold is on pad for soldering.
the base material is from Rogers Corp, entire board supplying 1 PCBs per panel. They're
Fabricated per IPC 6012 Class 2 using supplied Gerber data. Each 25 panels are packed for
Shipment. 

Features and benefits
Low water absorbability influences dielectric constant and dielectric loss less at damp;
Heat resistance, chemical resistance, impact strength and peeling strength are good;
the temperature coefficient of dielectric constant is among the lowest of any circuit board
Material, making it ideal for temperature sensitive applications;
Excellent surface planarity, helpful for PCBs with BGA packages to reduce failure rate
during assembly and soldering;
SMT process is resistant to reflow soldering, resistant to rework;
Reliability test, insulation resistance test and ionic contamination test;
Meeting your PCB needs from prototype to mass production;
Quick Lead time: 3-5 days;
Small quantity order is accepted;
Free-of-charge PCB prototype test;
IPC Class 2 / IPC Class 3;


Application
RF transceiver, variocoupler,Frequency converter,RF transceiver 


Parameter and data sheet