Enough theory. It’s time to start the wideband loop antenna implementation using real parts and circuits. Read more
Category: Projects
Loop Amplifier Input Impedance – Keeping It Low
Popular circuits do a pretty good job of providing low loop amplifier input impedance. This means you can use these to keep a loop in short-circuit wideband mode quite easily. Read more
Andonstar ADSM201 Digital Microscope – Merry Christmas
Merry Christmas, John. An Andonstar ADSM201 digital microscope for SMD work. And looking at tiny bugs with the grandchildren, too. Read more
Loop Current-to-Voltage Converter – A Short Story
A transimpedance amplifier provides a near perfect loop current-to-voltage converter. It provides lots of gain while keeping your loop in wideband or short-circuit mode, which is what you need. Read more
Dipole Versus Wideband Magnetic Loop Performance
Dipole versus wideband magnetic loop performance simulations show that a good active loop will stack up fairly well on the HF ham bands. Read more
Compare Wideband Loop Amplifier Performance
With LTSpice and a loop antenna model, you can easily compare wideband loop amplifier performance. Here is my evaluation of several popular circuits. Read more
LTSpice Magnetic Loop Model
You can experiment with wideband magnetic loop design with the LTSpice Magnetic Loop Model. Download here. Read more
Wideband versus Narrowband Mag Loops
Once and for all, let’s understand wideband versus narrowband mag loops. It’s a case of open and closed, circuits that is. Read more
Impedance Matching Test Jig 3D Printed
Another great ham radio use for a 3D printer is making an impedance matching test jig. Cheap and cheerful. Read more
Aluminum Core PEX Loop Antenna Material
You can make an aluminum core PEX loop antenna easily. This material is cheap, lightweight and easy to form a permanent loop shape. But hard to find! Read more