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High Selectivity Coupled Line Impedance Transformer with Second Harmonic Suppression
- Source :
- Journal of electromagnetic engineering and science. 16:13-18
- Publication Year :
- 2016
- Publisher :
- Korean Institute of Electromagnetic Engineering and Science, 2016.
-
Abstract
- This paper presents a design of an impedance transformer (IT) with high frequency selectivity characteristics. The frequency selectivity can be controlled by even- and odd-mode impedance of a shunt coupled transmission line (TL). For experimental validation, a 50- to 20- Ω IT was implemented at a center frequency (f0) of 2.6 GHz for the long-term evolution signal. The measured results were in good agreement with the simulations, showing a return loss higher than 19 dB over a passband bandwidth of 0.63 GHz (2.28–2.91 GHz) and good sharp frequency selectivity characteristic near to the passband. The series coupled TL provides a transmission zero at 5.75 GHz, whereas the shunt coupled TL provides three transmission zeros located at 2 GHz, 3.1 GHz, and 7.14 GHz.
- Subjects :
- Materials science
business.industry
020208 electrical & electronic engineering
Electrical engineering
020206 networking & telecommunications
Quarter-wave impedance transformer
02 engineering and technology
Transmission line
0202 electrical engineering, electronic engineering, information engineering
Return loss
Optoelectronics
Center frequency
business
Selectivity
Electrical impedance
Passband
Shunt (electrical)
Subjects
Details
- ISSN :
- 22348409
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- Journal of electromagnetic engineering and science
- Accession number :
- edsair.doi...........ba48d58b10d2efadc137d04047e0c127