Herminio Martinez

Herminio Martínez-García is with the Department of Electronic Engineering, School of Engineering of Eastern Barcelona (EEBE) Technical University of Catalonia, Barcelona, Spain.

Bachelor of Engineering. Degree (national award) in Electrical Engineering (specialisation in industrial electronics) from the Technical University of Catalonia - BarcelonaTech (UPC) in Barcelona, 1994.

Master of Science degree (national prize) in Electronic Engineering from the Technical University of Catalonia - BarcelonaTech (UPC) in Barcelona, 1998.

Doctor of Philosophy degree in Electronic Engineering (Honours) from the Technical University of Catalonia - BarcelonaTech (UPC) in Barcelona, 2003.

Areas of interest of the author: Signal Processing, Filters Analogue Design Oscillators

Co-authors: Encarna García Juan Gámiz

Publications on RadioLocman by the author Herminio Martinez:

Bandpass filter features adjustable Q and constant maximum gain
Applications such as audio equalizers require bandpass filters with a constant maximum gain that's independent of the filter's quality factor, Q. However, all of the well-known filter architectures –...
Mar 6, 2026
Single Op Amp Achieves Double-Hysteresis-Transfer Characteristic
Encarna García Herminio Martinez Juan Gámiz
In process-control applications requiring discontinuous controllers, the most elementary choice is a two-position-mode or on/off controller. A typical example of such a controller is a space heater. If the...
Sep 13, 2022
JFETs Offer LC Oscillators with Few Components
By using JFETs in unusual configurations, you can design simple, high-frequency LC oscillators with few passive components. The structure for implementing the amplifier stage comprises a JFET transistor that you...
Oct 21, 2021
Soft-Limiter Circuit Forms Basis of Simple AM Modulator
One of the most popular circuits for amplitude control in oscillators is the soft-limiter circuit (Figure 1a). When the output voltage, VOUT(t), is small, diodes D1 and D2 are off. Thus, all of the input current,...
Jul 6, 2018