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 20 mil
RO4350B with Lead Free HASL
(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 RO4350B substrate with Tg 280C
for the application of VHF Radio. It's 0.6 mm thick with tin 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
No corrosion in acids, alkali and aqua regia;
the characteristic of low dielectric loss makes the signal loss at a lower level, which
Makes the signal transmission of the whole equipment excellent;
RO4003C exhibit a stable dielectric constant over a broad frequency range. this makes
It an ideal substrate for broadband applications;
ENIG has long storage time. It can be stored for more than 1 year in vacuum bag;
UL, ISO certified PCB manufacturing factory;
Make delivery on time. Keeping 98% on-time-delivery rate;
No MOQ, low cost for prototypes and samples;
Experienced sales persons and skilled customer services;
High quality helps customers win cost-saving.


Application
Antenna,Multicoupler antenna,Spread spectrum,3G antenna


Parameter and data sheet