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 called microwave.
Typical frequencies for wireless applications:
* Current mobile: 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: 4 Layer High Frequency PCB Built on RO4350B
and RO4450B
(PCB's are custom-made products, the picture and parameters shown are just for reference)
General description
This is a type of 4 layer high frequency PCB built on RO4350B core and RO4450B prepreg for the
application of digital transmitter at 0.8 mm thick. It's immersion gold finish without solder mask and
silkscreen. It's fabricated per IPC 6012 Class 2 using supplied Gerber data. Each 10 boards 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.
RO4003C exhibit a stable dielectric constant over a broad frequency range. This makes it an ideal
substrate for broadband applications.
Reducing signal loss in high frequency application meets the development needs of communication
technology.
ENIG has long storage time (It can be stored for more than 1 year in vacuum bag)
Products and Manufacturing are certified by authorized organizations.
100% tests inclusive of electrical test and AOI inspection.
Focus on low to medium volume production
Customer complaint rate: <1%
High quality helps customers win cost-saving.
Application
Low noise amplifier, Interference filter, Tower-mounted booster, Multicoupler
Parameter and data sheet
| PCB SIZE |
91 x 68mm=1PCS |
| BOARD TYPE |
|
| Number of Layers |
Multilayer PCB, 4 Layer PCB |
| Surface Mount Components |
YES |
| Through Hole Components |
YES |
| LAYER STACKUP |
copper ------- 70um(2oz)+plate TOP layer |
| RO4350B 10 mil |
| no copper ------- MidLayer 1 |
| RO4450B 4 mil |
| no copper ------- MidLayer 2 |
| RO4450B 4 mil |
| RO4350B 10 mil |
| copper ------- 70um(2oz)+plate BOT Layer |
| TECHNOLOGY |
|
| Minimum Trace and Space: |
13mil/15mil |
| Minimum / Maximum Holes: |
0.3/3.21mm |
| Number of Different Holes: |
5 |
| Number of Drill Holes: |
1680 |
| Number of Milled Slots: |
1 |
| Number of Internal Cutouts: |
1 |
| Impedance Control |
no |
| BOARD MATERIAL |
|
| Glass Epoxy: |
Rogers RO4350B( core 10mil, DK=3.48)
& RO4450B(PP 4mil DK=3.54) |
| Final foil external: |
2oz |
| Final foil internal: |
0oz |
| Final height of PCB: |
0.8mm ±0.1 |
| PLATING AND COATING |
|
| Surface Finish |
Immersion Gold (71.1%) 2µ" over 100µ" nickel |
| Solder Mask Apply To: |
no solder mask required |
| Solder Mask Color: |
no solder mask required |
| Solder Mask Type: |
no solder mask required |
| CONTOUR/CUTTING |
Routing |
| MARKING |
|
| Side of Component Legend |
no silkscreen required |
| Colour of Component Legend |
no silkscreen required |
| Manufacturer Name or Logo: |
no silkscreen required |
| VIA |
Plated Through Hole(PTH), via open |
| FLAMIBILITY RATING |
UL 94-V0 Approval MIN. |
| DIMENSION TOLERANCE |
|
| Outline dimension: |
0.0059" (0.15mm) |
| Board plating: |
0.0030" (0.076mm) |
| Drill tolerance: |
0.002" (0.05mm) |
| TEST |
100% Electrical Test prior shipment |
| TYPE OF ARTWORK TO BE SUPPLIED |
email file, Gerber RS-274-X, PCBDOC etc |
| SERVICE AREA |
Worldwide, Globally. |
Why choose us?
1) Focus on your core competencies: We've deeply known it is full of fierce competition for
our customers in the market. You can focus on such important competencies as research and
development, sales and marketing based on our professional performance and skilled services
that exceeding your expectation.
2) Cutting-edge technology: it is rational for a small and medium-sized customer to hanker after
the latest equipment and manufacturing expertise for its PCBs. By the partnerships with Bicheng
PCB, you gain access to reach your expectation with our 3 factory bases with over 26,000 square
meters.
4) Save the cost of production: Production cost is one of the key points of our customers' product
competitiveness. Bicheng PCB have been striving to reduce its manufacturing cost from equipment
introduce, worker training and technology improvement to increase their profitability. Customers are
satisfied with our cost savings but without quality loss.
5) Avoid hassle: It's an upset matter when quality problem hassling you. Bicheng engineering design
prevents problem from occurring in pre-production. You will not get headache with Bicheng prototypes,
small orders and volume production. Our rate of customer complaint is less than 1% and will be solved
satisfactory.
6) Save time: Market requires the products updating quickly. Bicheng PCB always works fast and
flexible to save the time of production from prototype to standard production, quick turn-around or
scheduled deliveries.
7) An excellent team: Bicheng is trustworthy partner with passion, discipline, responsibility and
honesty. We have a team of experienced sales persons and skilled customer services. Do not
change your supplier. If change is must, Bicheng is the right one for you.
Variety of PCBs
PCB Pattern plating
Audited Supplier 
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