This is the best and most advanced High frequency electronics toolbox for Microwave designers, RF professionals, EMC technicians, radio-amateur, students, astronomer and electronic hobbyists. If the reviews are not visible please use this link: http://play.google.com/store/apps/details?id=mwave.mwcalculator_pro&hl=en With the following tools: (This Toolbox contains also all the tools of the Analog ElectronicToolbox, PCB Trace Calculator and Resistor Color Code Calculator.) 1) Noise floor (Kelvin,dBm) 2) Amplifier cascade (NF, Gain, P1db, OIP2, OIP3) 3) Radar equation (2-way path loss) 4) Radio equation (1-way path loss) 5) Power and voltage converter (W,dBm,V,dBµV) 6) Field intensity and power density converter (W/m2, V/m, A/m, Tesla, Gauss,dBm, W) 7) Mismatch error limits (VSWR, Return loss) 8) Reflectometer (VSWR, Return loss) 9) Mitered Bend 10) Divider and Couplers (Wilkinson, Rat race, Branchline , microstrip and lumped) 11) Balanced and und balanced PI and T attenuator 12) Skin depth (DC and AC resistance) 13) PCB Trace calculator (impedance/dimensions) - Microstrip - Stripline - Coplanar waveguide - Coupled microstrip - Coupled stripline 14) Image rejection (amplitude and phase imbalance) 15) Mixer harmonics (up and down convertion) 16) Helical antenna 17) Peak to RMS (peak, RMS, average, CF) 18) Air Core Inductor Inductance 19) Parallel plate 20) PI, T and L attenuator 21) Ohm's Law 22) Parallel LCR impedance/resonance 23) Series LCR impedance/resonance 24) Inductor impedance 25) Capacitance impedance 26) Antenna temperature (Kelvin) 27) Radar Cross Section (RCS) calculator (Sphere,Cylinder, flat plate, corners, dBsm) 28) Noise Figure Y-Factor Methode 29) EMC (EIRP, ERP, dBµV/m) 30) Noise figure converter (dB, linear, Kelvin) 31) Frequency Band Designations (IEEE Radar band, Military Radar band, Radio band, Satellite, Waveguide band) 32) Resistor color code (reverse lookup, 3 to 6 band) 33) Filter Design (Butterworth, Chebyshev, prototype): - Low pass - High pass filter - Band pass - Band stop filter 34) µ-Filter Design (microstrip, stripline): - Interchange of Circuits - Kuroda's Identities - Series and Shunt Circuit lines - Coupled line Circuits - Stepped Impedance 35) PCB Trace Width and Clearance 36) Series and Parallel component (R, L and C) 37) Reverse Series and Parallel resistor 38) Inductor Color Code 39) Capacitor Charge 40) Led Resistor 41) Voltage Divider 42) Thin Film Resistor (Trim and non Trim) 43) Opamp 44) Lumped Balun 45) Wavelength 46) L-Network Matching 47) LCR Parallel - Series Conversion 48) PI & T-Network Matching 49) Coax Line 50) Twisted pair 51) Lumped-Distributed Equivalences 52) Fresnel 53) Inductor Charge 54) Heat Sink temperature 55) Thermal via 56) Coupler directivity 57) Cavity resonance 58) Resistor SMD Code 59) Waveguide 60) Lumped phase shifter 61) Series section impedance matching transformers - Series section transformer - Quarter Wave transformer - Bramham (12th wave) transformer - Regier transformer 62) Power (dBm) add 63) Doherty PA 64) Novel Three-Way Doherty PA 65) Conventional Three-Way Doherty PA 66) Circular Waveguide 67) Reflection Attenuator 68) Balanced Attenuator 69) Bridged T Attenuator 70) Microstrip Patch 71) CR/LR/LCR Calculator (lowpass, highpass, bandpass and bandstop) 72) Capacitor SMD 73) IP2 and IP3 74) VSWR from power 75) TRL Calkit 76) Power Amplifier Efficiency 77) Radar Horizon 78) Antenna downtilt coverage 79) Wire over ground 80) Two section Quarter wave impedance transformer 81) Antenna Near and Far field calculator 82) Straight Wire calculator 83) Microstrip Coupled Line Directional Coupler 84) Stripline Coupled Line Directional Coupler and more