Multi-Harmonic Dc-Bias Network Based on Arbitrarily Width Modulated Microstrip Line

Abstract

Abstract-In this work, we present a novel DC-bias network for multiharmonic microwave circuits based on an arbitrarily width-modulated microstrip line. The arbitrary shape of the width-modulated microstrip line is obtained by using multiple microstrip taper sections. The method is illustrated through the design of four different DC-bias networks blocking from 1 to 4 harmonic components of a 2.5 GHz signal. The designs with an optimum shape for the arbitrarily widthmodulated microstrip line have been manufactured and measured, obtaining a good agreement between the simulated and measured behavior.

New Non-Linear Approach for the Evaluation of the Linearity of High Gain Harmonic Self Oscillating Mixers

“…The input RF signal, with center frequency f RF = 11.5 GHz and power P RF is connected to the gate port through a band-pass filter. A multiharmonic load based on an arbitrarily width modulated transmission line [19] is also connected to the gate port of the transistor. The parameters of this load will be used along the entire design process in order to set the frequency and the harmonic content of the automous signal, as well as the working regime.…”

“…The use of a multi-harmonic load based on an arbitrarily width modulated transmission line [19] provides a precise control over the position of the pair of complex conjugate poles created after reaching the condition expressed by (2) [7]. Therefore, several operating points, associated with different values of amplification, can be achieved.…”

Optimization of the Synchronization Bandwidth of Rationally Synchronized Oscillators Based on Bifurcation Control

“…The multi-harmonic load proposed in this work is based on an arbitrarily width modulated microstrip line [11]. The structure of the load is shown in Fig.…”

“…Another band-pass filter with center frequency f o is placed at the drain port of the transistor to select the output signal. At the gate port of the transistor it is also connected a multi-harmonic load Z L (f ) based on an arbitrarily width modulated microstrip transmission line [11]. On the one hand, the multi-harmonic load allows the control of the frequency and the harmonic content of the self-oscillation signal.…”

Design and Analysis of a Multi-Carrier Tx-Rx System Based on Rationally Synchronized Oscillators for Localization Applications

“…The input reference signal is connected to the RSO through a band-pass filter, with central frequency f r , placed at the gate port of the transistor, and the output signal, with frequency f o is selected at the drain port by means of a band-pass filter. A multi-harmonic load based on a arbitrarily width modulated microstrip transmission line [18,19], which is used for optimization purposes, is also connected at the gate port of the transistor.…”