Microwave Negative Group Delay Circuit: Filter Synthesis Approach
| Autor: | Girdhari Chaudhary, Junsik Park, Junhyung Jeong, Yongchae Jeong |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Computer science
Low-pass filter 020208 electrical & electronic engineering Butterworth filter 020206 networking & telecommunications 02 engineering and technology Band-stop filter Filter design 0202 electrical engineering electronic engineering information engineering Electronic engineering Bridged T delay equaliser Active filter Electronic filter All-pass filter |
| Zdroj: | Journal of electromagnetic engineering and science. 16:7-12 |
| ISSN: | 2234-8409 |
| DOI: | 10.5515/jkiees.2016.16.1.7 |
| Popis: | This paper presents the design of a negative group delay circuit (NGDC) using the filter synthesis approach. The proposed design method is based on a frequency transformation from a low-pass filter (LPF) to a bandstop filter (BSF). The predefined negative group delay (NGD) can be obtained by inserting resistors into resonators. To implement a circuit with a distributed transmission line, a circuit conversion technique is employed. Both theoretical and experimental results are provided for validating of the proposed approach. For NGD bandwidth and magnitude flatness enhancements, two second-order NGDCs with slightly different center frequencies are cascaded. In the experiment, group delay of 5.9±0.5 ns and insertion loss of 39.95±0.5 dB are obtained in the frequency range of 1.935–2.001 GHz. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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