A narrow band microstrip bandpass filter for RF Front-End of an UWB RFID reader circuit
Microstrip resonator based UWB chipless RFID tag needs a chirp for interrogation by its reader. An electronic mixer and a filter can be utilized to produce the chirp in simple way. The overall performance of generating the chirp mostly depends on the design of a narrow bandpass filter. In microwa...
| Main Authors: | , , |
|---|---|
| Format: | Conference or Workshop Item |
| Language: | English |
| Published: |
Penerbit UMT, Universiti Malaysia Terengganu (UMT)
2016
|
| Subjects: | |
| Online Access: | http://irep.iium.edu.my/54251/ http://irep.iium.edu.my/54251/ http://irep.iium.edu.my/54251/1/54251_A%20narrow%20band.pdf |
| Summary: | Microstrip resonator based UWB chipless RFID tag needs a chirp for interrogation
by its reader. An electronic mixer and a filter can be utilized to produce the chirp in simple
way. The overall performance of generating the chirp mostly depends on the design of a narrow
bandpass filter. In microwave UWB frequency, microstrip is successfully used to design a
passive filter circuit since it is compact and cost effective. An electronic mixer produces a lot
of frequencies, therefore, a sharp narrow band higher order filter is essential to extract a
particular frequency. This frequency can be used as the chirp for the RF front-end of the reader.
A sixth order elliptical bandpass filter has been designed on Taconic TLX-8 microwave
substrate. A six stages microstrip filter has been utilized for the design which is simulated by
using standard microwave simulation software to work in the UWB region. A number of mixer
and filter pairs are practically used in the UWB reader circuit to separate the different desired
frequencies. Each filter has insertion loss of -3dB and -3dB at lower and upper cutoff
frequencies 7.86 GHz and 8.02 GHz respectively. |
|---|