Electrical Circuit Design

Phoenix Engineering offers electric circuit design that adopt noise reduction for wireless communication, acoustic, power supply and so on.
Our extensive experience and expertise developed over years on analog circuit design are now two very important backbones for our noise reduction solutions which heighten the product quality to its fullest capacity.
Regardless of which market you are targeting, we have know-hows and technological experiences in working within various different electrical codes and compliances around the world which also are our great advantages.

PCB Design

Phoenix Engineering can design single-sided printed board to maximum of 18 multilayer PCB in accordance with size and shape limitations, electrical specifications, and compliances. Also we provide PCBA as trial sample.

Design Process

Studying product planning specifications We study the specification of a product plan and work along with software design block diagrams which contain appropriate key devices together. Then we quantify the functional specs and accordingly select parts that can satisfy required functionality.


Output
➢ Hardware design specification

矢印
Circuit Design After quantifying the target specification values at previous reviewing stage, our next process is to design circuit diagrams that can realize those specified functionalities. The important key here is to preliminarily include countermeasures for noises caused by power source, radiations and electrostatics in pictures, because fixing these later on will be way more difficult once prototypes are made and that can easily increase the cost.


Output
➢ Circuit diagram
➢ Block diagram
➢ Bill of materials
➢ DFM
➢ Simulation report

矢印
PCB Design Next we design component layout and patterns based on PCB outline designed by our Mechanical Design, paying extra attention to noise factors. Also we pay attention to product target regions and their safety standards and radio laws. At this drawing stage, we perform electrical characteristic simulations to RST (Rapid Signal Transmission) and several other systems.


Output
➢ PCB drawing
➢ PCB Specification note
➢ Mounting data

矢印
Prototype Trial We examine functions and electrical performances of PCBA and whether it adapts the specifications as PCBA. Then PCBA is assembled onto mechanical components to be evaluated as product trial samples. Especially noise issues and EMI, EMC are difficult to improve at tooling prototype stage, so we promote to evaluate and find good solution at this stage.


Output
➢ Trial PCBA samples
➢ Evaluation report of electrical characteristic
➢ Design revised notification
➢ Revised circuit diagram
➢ Revised PCB drawing
➢ Revised mount data
➢ Revised BOM

矢印
Tooling Prototype trial Substantial number of prototypes are made with the same components and under the same condition as mass production at this stage. Those prototypes are tested in terms of electrical characteristics, environment, reliability and compliance. We pay special attention to whether the performance spec fluctuates within expected deviations with enough margins. The circuit and PCB design can be revised at this point for adaptation mass production deviations.
We work together factory engineer to check production Jig, line measurement, and coordinate SMT engineer for a smoothly initiation of mass production.


Output
➢ Trial PCBA samples
➢ Evaluation report of electrical characteristic
➢ Design revised notification
➢ Measurement report of technical standard conformity certification
➢ Measurement report of safety standard
➢ Final circuit diagram
➢ Final PCB drawing
➢ Final mount data
➢ Final BOM

矢印
Witness Inspection of Mass Production We commit ourselves to attend inspection at manufacturers for mass production initiation and check mass production jigs and processes that have been established during tooling prototype stage. In case any initial failure is found, we assist them to find the solutions and solve problems in agile manner.

Design Tools

Electromagnetic field simulator (Femtet)

電磁界シミュレーター Femtet

Linear/Nonlinear circuit simulator (MWO)

線形回路シミュレータ MWO
線形回路シミュレータ MWO

Circuit board design (CR-5000)

CR-5000 System Designer
CR-5000 System Designer
CR-5000 Board Designer
CR-5000 Board Designer

Evaluation equipment

Radio-frequency

無線系

Spectrum analyzer

スペクトラムアナライザー
Transmit Power
Occupied Bandwidth Range
Higher Harmonics Level
スペクトラムアナライザー
Modulation Accuracy
Mesurement Time Axis and Frequency Axis Sync

Network analyzer

ネットワークアナライザ4 terminals circuit network S-parameter measurement
High-frequency impedance measurement
Antenna impedance measurement

Standard signal transmitter

ネットワークアナライザ
BER receiving sensitivity measurement BER

Bluetooth tester

ネットワークアナライザ
BT SIG
Radio law certificate of conformance data

Radio-frequency shield room

RFシールドルームHigh-frequency wave shield room
Radio-frequency performance measurement

音響系

音響系

オーディオ特性測定器
Audio characteristic measurement system
Audio precision

ヘッドホンアコースティック特性測定器
Acoustic characteristic measurement system for headset

Acoustic room

アコースティック音響特性試験
Background noise test
Acoustic characteristic test

Power supply

電源系

AC power supply

交流安定化電源
Instantaneous power failure test

Battery source unit

バッテリーソースユニット
Battery charging test
Battery life test

AC Power Noise Test System

交流電源ノイズ試験器
Power supply noise test


*The following general test systems are also available.

Types of Equipment Model Name Brand
Network Tester E5071B Agilent Technology
Spectrum Analyzer E4440A Agilent Technology
Signal Generator E4438C Agilent Technology
RF Simulator (High-frequency circuit design system) Microwave Office AWR
Electromagnetic Field Simulator Femtet Murata software
Digital Oscilloscope TDS7254B Tektronix
Digital Oscilloscope MSOX3054A Agilent Technology
Audio Analyzer APx-525+BT Audio Precision
Audio Analyzer VP-7723A LEAVER
Programmable Power Supply GS610 YOKOGAWA
AC Power Alternator PCR-500LA KIKUSUI
Electronic Load EML-03B FUJITSU TELECOM NETWORKS
Data Logger 34970A,34972A Agilent Technology
Static Electricity Tester ESS-100L NoiseKen
Noise Simulator ENS-24XA SANKI
Dielectric Voltage Tester TOS8850 KIKUSUI
Noise Level Meter 3604 YOKOGAWA
Light Intensity Meter TQ8210 AD SYSTEMS
Illuminometer CL-200 KONICA MINOLTA
Radiation Thermometer IT-550 HORIBA
Temperature and Humidity Testing Chamber FX424P ETAC
Shield Room Shield
Anechoic Chamber Anechoic Chamber
Soundproof Chamber Soundproof Chamber