Stability analysis and design of negative impedance converters: Application to circuit and small antennas

Abstract:

Negative impedance converters (NICs) have been proposed as structures to improve the performance of RF circuits and electrically small antennas. However, NICs suffer from stability problems. This paper presents a compact procedure to analyze the stability of NICs. Then, the required and sufficient conditions to predict the stability of a negative impedance converter are given. These conditions can be evaluated using standard computer-aideddesign software. Finally, a NIC prototype is given to validate and illustrate the presented design procedure, it is also integrated with a printed, blade-type, electrically small monopole in the VHF band.

Año de publicación:

2016

Keywords:

• stability
• Electrically small antennas
• Negative impedance converter (NIC)
• Network Nyquist test

Fuente:

scopus