Implementing a wideband loop antenna head end appears fairly simple with a transimpedance amplifier. But there are some tradeoffs between gain, stability and bandwidth you need to make. Read more
Category: Radio
LTSpice Digital Breadboard – Learning Accelerator
Download your free LTSpice digital breadboard and have some fun learning electronics. Test and understand your ideas before you actually build something. Read more
Wideband Loop Transimpedance Op Amp Selection
You can select candidates for a wideband loop transimpedance op amp by reading data sheets and simulating performance in LTSpice. Read more
Wideband Loop Antenna Implementation Begins
Enough theory. It’s time to start the wideband loop antenna implementation using real parts and circuits. Read more
Remembering Ham Radio Magazines
Ham radio magazines have been part of my life for fifty years. The best of them all was actually called “Ham Radio Magazine”. Remember it? Read more
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
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
How Wideband Loops Work – Keeping Current
Wideband loops work by extracting signal current independent of frequency. You will find the theory completely different from traditional tuned loops. Read more