General Extracted Pole Synthesis Technique with Applications to Low-Loss TE/sub011/ Mode Filters

Rhodes, John David; Cameron, Richard J.

doi:10.1109/tmtt.1980.1130213

Cited by 147 publications

(67 citation statements)

References 3 publications

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“…A detailed analysis of the extracted-pole synthesis can be found in [3]. The synthesis starts from the low-pass quasielliptic transfer function.…”

Section: Extracted-pole Synthesismentioning

confidence: 99%

“…This example is taken from Rhodes' paper [3]. The extracted-pole synthesis will not be repeated here since it was thoroughly explained in [3].…”

Section: Example On Six-pole Quasi-elliptic Functionmentioning

confidence: 99%

“…The structure allows for a sixth-order minimum. This new structure originated from -mode waveguide filters [3]. The transmission zero pair at the imaginary axis is extracted from the transfer function and realized separately with a pair of bandstop filters and phase shifters connected to the end of the main coupling structure.…”

Section: Introductionmentioning

confidence: 99%

“…They demonstrated that the extracted-pole technique developed by Rhodes [3] can be transferred to microstrip using a four-pole bandpass filter. However, there was little information on how to obtain the parameters for the microstrip design from the extracted-pole synthesis.…”

Section: Introductionmentioning

confidence: 99%

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The design of microstrip six-pole quasi-elliptic filter with linear phase response using extracted-pole technique

Yeo

Lancaster

2001

IEEE Trans. Microwave Theory Techn.

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Abstract-The development of microstrip filters has been in great demand due to the rapid growth of wireless communication systems in this decade. Quasi-elliptic response filters are very popular in communication systems because of their high selectivity, which is introduced by a pair of transmission zeros. A number of ways of implementing the quasi-elliptic response filter on microstrip have been studied over the last two decades, i.e., the cascaded quadruplet filter, canonical filter, and extracted-pole filter. However, there is very little information in the literature giving the design details for microstrip extracted-pole filters. In this paper, design equations of the extracted-pole filter for microstrip are reviewed. A new class of microstrip filter is also presented here. This class of filter will have a quasi-elliptic function response and at the same time linear phase in the passband. The linear phase of the filter is introduced by an in-phase cross coupling, while the transmission zero is realized using an extracted-pole technique. Experimental results, together with a theoretical comparison between the group delay of this design, and the conventional quasi-elliptic six-pole filter are also presented.Index Terms-Author, please supply index terms. E-mail keywords@ieee.org for information.

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“…A detailed analysis of the extracted-pole synthesis can be found in [3]. The synthesis starts from the low-pass quasielliptic transfer function.…”

Section: Extracted-pole Synthesismentioning

confidence: 99%

“…This example is taken from Rhodes' paper [3]. The extracted-pole synthesis will not be repeated here since it was thoroughly explained in [3].…”

Section: Example On Six-pole Quasi-elliptic Functionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The design of microstrip six-pole quasi-elliptic filter with linear phase response using extracted-pole technique

Yeo

Lancaster

2001

IEEE Trans. Microwave Theory Techn.

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“…Over the past few decades, plenty of efforts have been made for the direct synthesis of narrowband microwave filters [1,2,3,4,5,6]. Basically, two topological configurations, namely cross-coupled [1,2,3] and extracted-pole [4,5,6], are introduced to generate the finite transmission zeros (TZs).…”

Section: Introductionmentioning

confidence: 99%

Synthesis of resonators filters with arbitrary mixed topology using hybrid method

Zhang

Zhu

2016

IEICE Electron. Express

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In this paper a hybrid optimization synthesis method is presented for arbitrary mixed topology microwave filter (i.e., part of the structure with an extracted-pole and part with cross-coupled configurations). Compared with the conventional synthesis method for mixed topology filter, the method presented in this paper has following advantages: 1. There is no rotations for coupling matrix. 2. The method is suitable for terminal extracted-pole sections and inside extracted-pole sections. 3. It is no need to care the extra phases for the characteristic polynomials. This method consists of a genetic algorithm (GA) for a global optimizer and Solvopt for a local optimizer, respectively. Four examples are given for illustrating the proposed techniques for the synthesis of mixed-topology prototype filters. Excellent agreement between the response computed from characteristic polynomials and the response computed from couplings is obtained from the proposed method.

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Filter and Payload‐Integration Elements

Braun¹

2012

Satellite Communications Payload and System

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General Extracted Pole Synthesis Technique with Applications to Low-Loss TE/sub011/ Mode Filters

Cited by 147 publications

References 3 publications

The design of microstrip six-pole quasi-elliptic filter with linear phase response using extracted-pole technique

The design of microstrip six-pole quasi-elliptic filter with linear phase response using extracted-pole technique

Synthesis of resonators filters with arbitrary mixed topology using hybrid method

Filter and Payload‐Integration Elements

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