Modern approaches to broadband matching problems

1985 ◽  
Vol 132 (2) ◽  
pp. 87 ◽  
Author(s):  
B.S. Yarman
Keyword(s):  
Matching Problems ◽  
Broadband Matching

A new method for solving broadband matching problems

1994 ◽  
Vol 41 (9) ◽  
pp. 561-571 ◽  
Author(s):  
H. Dedieu ◽  
C. Dehollain ◽  
J. Neirynck ◽  
G. Rhodes
Keyword(s):  
New Method ◽  
Matching Problems ◽  
Broadband Matching

Broadband Matching via Unequal Length Cascaded Transmission Lines

2017 ◽  
Vol 26 (05) ◽  
pp. 1750070 ◽  
Author(s):  
Metin Şengül
Keyword(s):  
Design Process ◽  
Transmission Lines ◽  
Characteristic Impedance ◽  
New Approach ◽  
Matching Problems ◽  
The Real ◽  
Real Frequency ◽  
Optimum Characteristic ◽  
Broadband Matching ◽  
Unequal Length

In this paper, a new approach based on the real frequency technique (RFT) has been proposed to solve broadband matching problems using cascaded unequal length transmission lines. At the end of the design process, optimum characteristic impedance and delay values of transmission lines are obtained. Two examples are given to illustrate the utilization of the proposed approach.

AUTOMATED SYNTHESIS OF BROADBAND MATCHING AND FILTERING DEVICES

2018 ◽  
pp. 48-52
Author(s):  
S. V. Popov ◽  
G. N. Devyatkov
Keyword(s):  
Transmission Lines ◽  
Synthesis Method ◽  
Optimal Solution ◽  
Complex Problem ◽  
Matching Problem ◽  
Engineering Product ◽  
Second Stage ◽  
Automated Method ◽  
Broadband Matching ◽  
Element Base

When designing radioelectronic devices, that are included in the composition of various systems, it is important to solve broadband matching problem and filtering problem. However, usually these problems are separated and not considered together. Moreover, the synthesis of filters does not take into account the behavior of impedances of the generator and the load in the stopbands. The solution of the complex problem is actual, since it allows expanding the functionality of the device, which can greatly simplify the construction of the radio engineering product. It should be noted that in the known literature solution of this problem in such a formulation is not considered. The aim of the work is to develop a synthesis method and algorithm of broadband devices that connect arbitrary immitances of the generator and the load, and these devices should perform simultaneously functions of both matching and filtering in reactive lumped electric element base and in distributed electric element base, limited only by transmission lines with T-waves. In this paper, a two-stage automated method of synthesis presented here stage allows at the first to adequately find a good initial solution to the posed problem (determining structure and parameters of the broadband matching and filtering quadrupole), in the second stage this approach allows to find the optimal solution to the complex problem, taking into account the constraints on physical and circuit realizability. In this work, the synthesis of broadband matching and filtering devices in lumped and distributed electrical element basis is carried out, and these devices connect complex impedances of the source and the load. The characteristics of the devices obtained after the synthesis show that the solution of the complex problem of matching and filtering gives a significant improvement in filtering properties with small losses in the level of transmitted power.

SYNTHESIS OF BROADBAND DISTRIBUTED IMPEDANCE TRANSFORMERS WITH A GIVEN PHASE RESPONSE

2018 ◽  
pp. 40-47
Author(s):  
D. I. Volkhin ◽  
G. N. Devyatkov
Keyword(s):  
Transmission Lines ◽  
Conversion Coefficient ◽  
Power Conversion ◽  
Response Characteristic ◽  
Second Order ◽  
Phase Response ◽  
Synthesis Process ◽  
New Class ◽  
Broadband Matching ◽  
Active Impedance

The development of a new class of broadband matching devices, including active impedance transformers, with the possibility of correcting the phase response is an actual task at present. Synthesis of a broadband active impedance transformer with a phase response corresponding to a second-order lattice X-section in a distributed elemental basis based on the previously presented method for the synthesis of broadband matching devices with predetermined phase response is considered in this paper. As a result of synthesis, the y-matrix of the broadband transforming two-port network is obtained. The functions of its own parameters represented in the form of Foster. Applying various conditions of circuit realizability in the synthesis process, we obtained structures convenient for realization on microwave on regular transmission lines, one of which is investigated at various parameters of a given phase response. As a result of the research, it is found that the structure has a wide ability to reproduce the phase response of a second-order lattice X-section with different parameters, and also reproduce the linear phase response characteristic while maintaining an acceptable level of the power conversion coefficient in a given frequency band. Thus, the efficiency of the previously proposed method of synthesis of broadband matching devices with predetermined phase response is demonstrated, and also the possibilities of active impedance transformers on regular transmission lines are shown.

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