Microstrip filters and diplexers for WiMAX applications

Zayniyev, Damir; Budimir, D.; Zouganelis, Georgios

doi:10.1109/aps.2007.4395806

Cited by 6 publications

(4 citation statements)

References 5 publications

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“…4; having four fingers in each side in opposite direction in the upper plane of a microstrip line. These fingers are connected to the closed rectangular rings terminated with the A comparison between this work with some other works in [21,28,29] of UWB filters related to resonance frequency (f o ), bandwidth (BW), length of device (l), insertion loss (S 21 ), return loss (S 11 ), and quality factor (Q) are listed in Table 4. The approximate miniaturization in the presented design is 53 % compared to the design in [28].…”

Section: Simulation Results Of Uwb-bpfmentioning

confidence: 99%

Design of Bandpass Filter Based on Metamaterial Concepts

Reja

Ahmad

Al-Salih

2015

Theory and Applications of Applied Electromagnetics

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A design of an ultra-wideband (UWB) bandpass filter (BPF) is presented depending on the composite right/left handed-transmission line (CRLH-TL) basis. The interdigital (ID) coupled lines and complementary split ring resonators (CSRRs) are the tools used to realize an UWB microwave filter with an appreciable size reduction and better performance. The bandwidth resulted from this filter is 5.6 GHz operating at 3.2 GHz center frequency. The interdigital elements are connected to the input and output ports through square closed rings in the upper side of the microstrip line, whereas the CSRRs are etched in the ground of the microstrip line. All components contribute together to get metamaterial (MTM) media containing negative permittivity and negative permeability. The simulated results show that the filter has a flat insertion loss of less than 1 dB with an acceptable return loss performance in the frequency range (0.4-6) GHz. The achieved quality factor is equal to 0.57 and the fractional bandwidth is over 100 %.

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Section: Simulation Results Of Uwb-bpfmentioning

confidence: 99%

Design of Bandpass Filter Based on Metamaterial Concepts

Reja

Ahmad

Al-Salih

2015

Theory and Applications of Applied Electromagnetics

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“…Metoda pseudo-interdigital merupakan pengembangan dari metoda interdigital yang merupakan salah satu mikrostrip transmission line filter yang paling popular digunakan untuk desain [8].…”

Section: B Metoda Pseudo-interdigitalunclassified

Desain dan Implementasi Duplekser dengan Metoda Pseudo-Interdigital untuk Uplink dan Downlink LTE

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Hercuadi

2016

indones.j.electron.telecommun.

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AbstrakDuplekser merupakan perangkat yang dapat mengisolasi receiver dari transmitter saat keduanya saling berbagi antena yang sama, digunakan agar komunikasi bisa berjalan secara full duplex. Ada dua metode transmisi duplex yaitu frequency division duplex (FDD) dan time division duplex (TDD). FDD merupakan teknik duplex yang menggunakan dua frekuensi yang berbeda untuk melakukan komunikasi dalam dua arah, sedangkan TDD menggunakan frekuensi tunggal dan frekuensi tersebut digunakan oleh semua kanal untuk melakukan pengiriman dan penerimaan data.Gabungan dua bandpass filter dengan metoda pseudo-interdigital untuk aplikasi LTE (long term evolution). Metode ini lebih unggul dibandingkan duplekser dengan metoda hybrid. Duplekser bekerja pada FDD LTE band ke-7 yaitu frekuensi uplink 2500-2570 MHz dan downlink 2620-2690 MHz. Dari hasil pengukuran diperoleh sebagai berikut: nilai frekuensi center pada uplink 2639 MHz dan pada downlink 2659 MHz, insertion loss pada uplink 1,561 dB dan downlink 1,74 dB, bandwidth ±70 MHz, isolasi 23,03 dB, serta nilai return loss 23,5 dB pada uplink dan downlink 23,45 dB.Kata kunci: duplekser, FDD (frequency division duplex), uplink, downlink, LTE (long term evolution), pseudo-interdigital. AbstractDuplexer is a device that can isolate the receiver from the transmitter while both share the same antenna, it is used so that communication can be run in full duplex. There are two methods of transmitting duplex, i.e. frequency division duplex (FDD) and time division duplex (TDD). Duplex FDD is a technique that uses two different frequencies for communication in both directions, while TDD uses a single frequency and the frequency is used by all channels for sending and receiving data.A combination of two bandpass filters with the method for application Pseudo-Interdigital LTE (long term evolution). This method is superior to the hybrid duplexer method. Duplexer LTE FDD band worked on the 7th the uplink frequency 2500-2570 MHz and 2620-2690 MHz downlink. From the measurement results, it is obtained as follows: the value of the center frequency of 2639 MHz uplink and 2659 MHz downlink, insertion loss in 1.561 dB uplink and 1.74 dB downlink, ± 70 MHz bandwidth, isolation 23.03 dB, and return loss of 23.5 dB and 23.45 dB on uplink and downlink respectively.

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“…illustrates the layout of the proposed microstrip pseudo-interdigital stepped impedance bandpass filter. This filter is modified bandpass proposed in [5] filter with introduced stepped impedance resonators…”

Section: Filter and Diplexer Designmentioning

confidence: 99%