My First Android App: Microwave Tools

Description

This is an app for calculating the electrical parameters and physical parameters of different kinds of transmission lines in RF frequency. The physical parameters include the characteristic impedance, electrical length, differential impedance, and common mode impedance. The physical parameters include the width and the length of the lines and the thick and the relative permittivity of the substrate, etc.
Now, this app includes the functions for calculating the Microstrip Line, Coupled Microstrip Line, Coplanar Waveguide, Coplanar Waveguide with Ground, Stripline, Coupled Stripline and Coaxial Line.

What's New

★Version: 1.0
> Microstrip Line
> Coupled Microstrip Line
> Coplanar Waveguide
> Coplanar Waveguide with Ground
> Stripline
> Coupled Stripline
> Coaxial Line

Screenshots

Download

https://play.google.com/store/apps/details?id=com.rookiedev.microwavetools

How to Configure the Linux before using the fastboot mode of Android

After installing the android sdk, we still need some configuration before using the fastboot mode of the nexus s on Linux.

Firstly, we need the device ID of the android device, here is the nexus s. Connect the nexus s to the computer via USB, then type "lsusb" in the terminal, see figure 1. In the last line, we can see the ID "18d1:XXXX".

Fig. 1

Then, create a file in "/etc/udev/rules.d" named "51-android.rules". Copy "UBSYSTEM=="usb", SYSFS{idVendor}=="18d1", MODE="0666"" into the file. After rebooting, you can use the fastboot mode.