microwave software
® 
Introduction to Utilities+ ®
"We do utilities - smartly!"
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FACT:
A general purpose RF/Microwave utility program is a very handy thing to have. We give you 26 useful circuit and system design tools, all are simple to use and menu driven. They cover T/Pi pad design, Cascade noise figure, VSWR / reflection coefficient conversion, Coil Design, Pi-Network matching, Stubs, etc. Many of the things you need to do daily. But, we don't stop there - we also include some tools you just won't find anywhere else, like Fano bandwidth calculations that tell you the minimum VSWR possible over a given bandwidth, and how to properly size a housing for an amplifier, etc.!
QUESTION:
Why aren't you using Utilities+ ? Tools that make your life easier are a good investment. At a paltry $19.50 our Utilities+ program is a total steal! All prices are in USD, and for a single-user license.
CONTENTS:
1. Lev, James, J. " Calculator program finds Fano bandwidth, " Microwaves & RF, September 1985, Vol. 24, No. 9, pp. 153-155.
SAMPLE CALCULATION #1:
As a first example, let's look at the case of a GaAs FET whose input is modeled as a series RC network and examine the Fano bandwidth limit. Given that R=15 ohms, and C=0.5 pF, what is the minimum attainable VSWR you can get across the 8-18 GHz band?
After entering the 8-18 GHz band limits we then choose " SRC " from the list of available circuit models, and type " 15,.5 " to specify R an C. Here is the output calculation:
SAMPLE CALCULATION #2:
As a second example, consider the design of an enclosure for a 30 dB gain amplifier operating in the 2100-2300 MHz band. The circuit board layout and other factors indicate that a 1.5 X 0.5 X 3.0 inch box would be ideal. Will it work?
Using the waveguide calculations routine, we enter " 1.5,.5 " (the width and height), and obtain the following:
MATERIAL
INCLUDED:
The program, and its support files, can be downloaded, by you, direct from our server. The User Manual for Utilities+ is available on-line. You can view it or print it out at your leisure. By having an on-line manual, you're assured that you will get any typo error corrections or tips instantly! Your manual will never be "out of date." You may view the User Manual for Utilities+ by clicking on the link below:
ORDERING INFORMATION:
Utilities+ is priced at $19.50. To place an order, please visit our Order Info page. All prices are in USD, and for a single-user license.
NOTE:
Our software is for use on Windows 95, 98, 98SE, Me, NT, 2000, and XP PC's, where the programs run in a DOS window.
A general purpose RF/Microwave utility program is a very handy thing to have. We give you 26 useful circuit and system design tools, all are simple to use and menu driven. They cover T/Pi pad design, Cascade noise figure, VSWR / reflection coefficient conversion, Coil Design, Pi-Network matching, Stubs, etc. Many of the things you need to do daily. But, we don't stop there - we also include some tools you just won't find anywhere else, like Fano bandwidth calculations that tell you the minimum VSWR possible over a given bandwidth, and how to properly size a housing for an amplifier, etc.!
QUESTION:
Why aren't you using Utilities+ ? Tools that make your life easier are a good investment. At a paltry $19.50 our Utilities+ program is a total steal! All prices are in USD, and for a single-user license.
| Cascade
Noise Figure |
Bondwires |
| Pi-Network
Matching |
Wye-Delta
Transformations |
| L-Match
Networks |
Ref./ Mismatch/ VSWR |
| Z/Ref.
- Ref./Z |
Hyperbolic
Functions |
| Butterworth
LPF |
Chebyshev
LPF |
| Fano
Bandwidth |
Line
Length |
| OST /
SST Stubs |
Reactance
Chart |
| Parallel
Plate Cap. |
T / Pi
Pads |
| Single
Line Matching |
Waveguide
Calculations & Amplifier Housing Design |
| Series
/ Parallel Con. |
TRL2
Matching |
| Linear
Interpolation |
VSWR
vs. Pad Size |
| AWG
Wire Table |
T-Line
Transformations |
| Air
Coils |
Mismatch
Error Limits |
1. Lev, James, J. " Calculator program finds Fano bandwidth, " Microwaves & RF, September 1985, Vol. 24, No. 9, pp. 153-155.
SAMPLE CALCULATION #1:
As a first example, let's look at the case of a GaAs FET whose input is modeled as a series RC network and examine the Fano bandwidth limit. Given that R=15 ohms, and C=0.5 pF, what is the minimum attainable VSWR you can get across the 8-18 GHz band?
After entering the 8-18 GHz band limits we then choose " SRC " from the list of available circuit models, and type " 15,.5 " to specify R an C. Here is the output calculation:
Min.
VSWR across band = 1.269
To achieve this theoretical VSWR would require a match network with an infinite number of elements. Naturally, your "real world" VSWR will be worse. The power of this tool is that you now know what the limit is, and when to stop.
To achieve this theoretical VSWR would require a match network with an infinite number of elements. Naturally, your "real world" VSWR will be worse. The power of this tool is that you now know what the limit is, and when to stop.
SAMPLE CALCULATION #2:
As a second example, consider the design of an enclosure for a 30 dB gain amplifier operating in the 2100-2300 MHz band. The circuit board layout and other factors indicate that a 1.5 X 0.5 X 3.0 inch box would be ideal. Will it work?
Using the waveguide calculations routine, we enter " 1.5,.5 " (the width and height), and obtain the following:
TE10
Cutoff = 3934.3 MHz
TE01 Cutoff = 11803.0 MHz
After entering the upper band edge frequency of 2300 MHz, and the 3 inch length, we find:
TE01 Cutoff = 11803.0 MHz
After entering the upper band edge frequency of 2300 MHz, and the 3 inch length, we find:
TE10
Att. @ 2300 MHz = 14.759 dB/in.
TE01 Att. @ 2300 MHz = 53.529 dB/in.
TE101 Cavity res. @ 4398.7 MHz & Att. = 44.278 dB @ 2300 MHz
We conclude that this enclosure will work fine. It will operate well into a "waveguide below cut-off mode." The attenuation, from end to end, within the enclosure exceeds the amplifier gain, and the enclosure is free of undesired cavity resonances. Will the "tools" you use now tell you this?
TE01 Att. @ 2300 MHz = 53.529 dB/in.
TE101 Cavity res. @ 4398.7 MHz & Att. = 44.278 dB @ 2300 MHz
We conclude that this enclosure will work fine. It will operate well into a "waveguide below cut-off mode." The attenuation, from end to end, within the enclosure exceeds the amplifier gain, and the enclosure is free of undesired cavity resonances. Will the "tools" you use now tell you this?
The program, and its support files, can be downloaded, by you, direct from our server. The User Manual for Utilities+ is available on-line. You can view it or print it out at your leisure. By having an on-line manual, you're assured that you will get any typo error corrections or tips instantly! Your manual will never be "out of date." You may view the User Manual for Utilities+ by clicking on the link below:
ORDERING INFORMATION:
Utilities+ is priced at $19.50. To place an order, please visit our Order Info page. All prices are in USD, and for a single-user license.
Our software is for use on Windows 95, 98, 98SE, Me, NT, 2000, and XP PC's, where the programs run in a DOS window.