Explicit formulas for Chebyshev impedance-matching networks, filters and interstages

1964 ◽  
Vol 111 (6) ◽  
pp. 1099 ◽  
Author(s):  
R. Levy
Keyword(s):  
Impedance Matching ◽  
Explicit Formulas ◽  
Matching Networks

DESIGN OF HIGH-PASS IMPEDANCE-MATCHING NETWORKS WITH SERIES RC LOAD

2005 ◽  
Vol 14 (04) ◽  
pp. 831-839
Author(s):  
YI-SHENG ZHU ◽  
RU-LAI LI ◽  
WAI-KAI CHEN
Keyword(s):  
Arbitrary Order ◽  
Impedance Matching ◽  
Power Gain ◽  
Explicit Formulas ◽  
Simple Arithmetic ◽  
Pass Filter ◽  
High Pass Filter ◽  
Matching Networks ◽  
High Pass

Explicit formulas for the design of a high-pass filter to match any series RC load to a resistive generator and to achieve the Butterworth or Chebyshev transducer power-gain characteristics of arbitrary order are presented. The significance is that it reduces the design to simple arithmetic. Illustrative examples are provided to demonstrate their usage.

scholarly journals Optimum power transfer in RF front end systems using adaptive impedance matching technique

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Mohammad Alibakhshikenari ◽  
Bal S. Virdee ◽  
Leyre Azpilicueta ◽  
Chan H. See ◽  
Raed Abd-Alhameed ◽  
...  
Keyword(s):  
Impedance Matching ◽  
Adaptive Antenna ◽  
Power Transfer ◽  
Control Loops ◽  
Matching Networks ◽  
Front End ◽  
Rf Front End ◽  
Matching Technique ◽  
Digital Circuitry ◽  
Communications System

AbstractMatching the antenna’s impedance to the RF-front-end of a wireless communications system is challenging as the impedance varies with its surround environment. Autonomously matching the antenna to the RF-front-end is therefore essential to optimize power transfer and thereby maintain the antenna’s radiation efficiency. This paper presents a theoretical technique for automatically tuning an LC impedance matching network that compensates antenna mismatch presented to the RF-front-end. The proposed technique converges to a matching point without the need of complex mathematical modelling of the system comprising of non-linear control elements. Digital circuitry is used to implement the required matching circuit. Reliable convergence is achieved within the tuning range of the LC-network using control-loops that can independently control the LC impedance. An algorithm based on the proposed technique was used to verify its effectiveness with various antenna loads. Mismatch error of the technique is less than 0.2%. The technique enables speedy convergence (< 5 µs) and is highly accurate for autonomous adaptive antenna matching networks.

scholarly journals Overcoming the Realization Problems of Wideband Matching Circuits

2018 ◽  
pp. 31-36
Author(s):  
Balázs Matolcsy ◽  
Attila Zólomy
Keyword(s):  
Design Process ◽  
Circuit Simulation ◽  
Impedance Matching ◽  
Microwave Circuit ◽  
Design Rules ◽  
Analytical Design ◽  
Calculation Technique ◽  
Matching Networks ◽  
Practical Design

During the analytical design process of wideband impedance matching major problems may arise, that might lead to non-realizable matching networks, preventing the successful impedance matching. In this paper two practical design rules and a simplified equation is presented, supporting the design of physically realizable impedance matching networks. The design rules and calculation technique introduced by this paper is summarized, and validated by microwave circuit simulation examples.

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