A new microwave amplifier nonlinearity measurement method

Abstract

The measurement of the nonlinearity parameters is usually cumbersome and not accurate enough. In this paper a new method is presented for the measurement of the nonlinearity characteristics, i.e. for the AM compression and AM-to-PM conversion. The new method offers an easy measurement process which is widely applicable. It does not need special instrumentation. The new method has another important advantage: the dynamic behavior of the nonlinearity characteristics can also be obtained in a simple way. Utilizing the new measurement method the nonlinear characteristics of a microwave amplifier have been determined.

Analysis of nonlinear effects in microwave spectrometers

“…Some other approaches involving other kinds of mathematical models are used to describe amplitude and phase nonlinearities. On the basis of these, comparison with experimental results by different methods such as single‐tone, two‐tone, three‐tone and noise loading tests have been performed by Heiter [1973], Reinhardt et al [1995], and Berceli and Marozsák [2006]. In related fields, other measurements which address the importance of accuracy in microwave systems, such as attenuation standards [see Widarta et al , 2003; Iida et al , 2006] or microwave devices [see Holland and Howes , 2002], have also been developed.…”

Design of a three port feed matching network for a dual-band and dual-polarized rectangular patch antenna

“…The antenna must have a single feed so that it can be used for either of the above applications. The required return loss at each frequency is 15db [5][6][7][8]. Initially a design graph is used to determine the dimensions of the antenna.…”