Hiro's Programs

Introduction of my programs.

Japanese is here

the personal computer

1. High frequency filter design for Excel work sheet

This software have method of the baterwarth filter design. And filter characteristics will obtain for the number of filter.

This program name is "FILTER DESIGN". It is registered in the Nifty serve of science forum(Macintosh).

2. High frequency circuits simulator

This simulator composition is S parameter subordinate. It is using of Inductance, capacitance, resistance and S parameter files. This example is designing chebicheff filter of the input function, the lowpass filter and the bandpass filter characteristics.

This program is not open to the public now.

3. Simulation of the digital modulation

This software designed by Hirokazu Kitamura on about 5years ago. Also, original software was making for NEC PC-9801 personal computer.
1) QPSK modulation (a=0.3)
CONSTELLATIONsEYE-PATTERNs
2) 64QAM modulation (a=0.2)
EYE-PATTERNs
3) 16QAM modulation (a=0.2)
CONSTELLATIONsEYE-PATTERNs

4. Phase Noise simulation for PLL/VCO

Also, this software designed by Hirokazu Kitamura on about 5years ago. And software was switch from PC-9801 to Macintosh.
PLL and VCO phase noise