A square ring resonator bandpass filter with asymmetrically loaded open circuited stubs

Arain, Salman; Abassi, Muhammad Ali Babar; Nikolaou, Symeon; Vryonides, Photos

doi:10.1109/mocast.2016.7495156

Cited by 5 publications

(6 citation statements)

References 11 publications

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“…Nilai konstanta dielektrik efektif ini memengaruhi panjang gelombang terbimbing (λ g ), baik untuk resonator maupun untuk saluran menuju ke konektor. Dengan menggunakan (2), diperoleh panjang gelombang pada saluran transmisi [3].…”

Section: Metodologi Dalam Perancangan Suatu Filter Mikrostrip Hunclassified

Analisis Pengaruh Ukuran Geometri Stripline Terhadap Kinerja BPF Mikrostrip Square Ring Resonator

Kristiadi

Arseno

Setiawan

2019

Jurnal Nasional Teknik Elektro dan Teknologi Informasi

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Filter is an RF component that has an important function in a communication system. The type of filter which is usually used in receiver system is bandpass filter (BPF). The filter design method that is discussed on this paper is square ring resonator using microstrip transmission line modified by adding coupled line stub on each side of resonator. The modification is used because it is capable to optimize the return loss and to hold the insertion loss so that the filter could be working as a wideband filter. This paper discusses the influence of the geometrical changing from stripline microstrip on BPF square ring resonator microstrip performance. The evaluation is needed to obtain the optimum performance of BPF microstrip which is suitable to communication system specification. The simulation is performed using component RF simulation software with Rogers RT/Duroid 5880 substrate which has dielectric constant (εr) of 2.2. The result of last simulation shows that the filter has center frequency around 1.5 GHz with its average bandwidth is around 916 MHz.

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Section: Metodologi Dalam Perancangan Suatu Filter Mikrostrip Hunclassified

Analisis Pengaruh Ukuran Geometri Stripline Terhadap Kinerja BPF Mikrostrip Square Ring Resonator

Kristiadi

Arseno

Setiawan

2019

Jurnal Nasional Teknik Elektro dan Teknologi Informasi

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“…Penelitian [7] juga menggunakan loop terbuka dengan tujuan untuk meminiaturisasi dimensi filter dengan respon pita frekuensi yang sempit. Namun pada penelitian [8], [9] menggunakan sebuah resonator berbentuk kotak dengan loop tertutup untuk mendapatkan lebar pita frekuensi yang diinginkan sesuai dengan spesifikasi sistem yang akan dirancang.…”

Section: Pendahuluanunclassified

“…Panjang gelombang untuk resonator ring berbentuk lingkaran dapat dicari dengan persamaan berikut [8], …”

Section: B Filter Ring Resonatorunclassified

Perancangan Bandpass Filter Pita Sempit pada Frekuensi L-Band untuk Aplikasi Synthetic Aperture Radar (SAR)

Syihabuddin

Nurmantris

Prasetyo

2017

INFOTEL

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Abstrak -Pada sistem Synthetic Aperture Radar (SAR), lebar pita menentukan resolusi yang diinginkan. Jika lebar pita sempit, maka resolusi yang didapatkan akan tinggi sehingga objek yang diamati akan lebih presisi. Untuk mendapatkan performa tersebut, dibutuhkan filter yang dapat menjaga lebar pita dari keluaran generator sinyal Chirp. Penelitian ini merancang filter dengan selektivitas tinggi pada frekuensi 1,27 GHz dengan lebar pita sebesar 10 MHz. Dengan karakteristik tersebut, perancangan filter dapat menggunakan resonator berbentuk kotak karena dapat menghasilkan lebar pita yang sempit. Dari hasil perancangan menggunakan duroid 5880 dengan permitivitas relative sebesar 2,2 didapatkan respon frekuensi pada 1,27 GHz dengan nilai S11 sebesar -36,25 dB dan nilai S21 sebesar -0,92 dB. Untuk lebar pita pada rentang frekuensi 1,265 -1,275 GHz didapatkan nilai S11 dan S21 secara berurutan sebesar -14,37 dB dan -1,09 dB serta -14,43 dB dan -1,08 dB. Abstract -In the Synthetic Aperture Radar (SAR) system, the bandwidth specifies the desired resolution. If the bandwidth is small, then the resolution obtained will be high so that the observed object will be more precise. To obtain such performance, a filter that can stabilize the bandwidth from Chirp Generator output is required. This study designs a filter with high selectivity at a 1.27 GHz frequency with a 10 MHz bandwidth. With these characteristics, a rectangular resonator filter design can be used because it can produce narrow bandwidth. The designed filter using Duroid 5880 with relative permittivity 2.2 obtains the frequency response at 1,27 GHz with value of S11 equal to -36,25 dB and S21 value equal to -0,92 dB. For bandwidth at the frequency range 1,265 -1,275 GHz, it is obtained the values of S11 and S21 respectively -14.37 dB and -1.09 dB also -14.43 dB and -1.08 dB.

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“…Due to the limited number of methods available to change the inter-resonator coupling, there have not been many efforts in tuning the passband bandwidth as compared to controlling the center frequency. Several ring resonator BPFs are reported in [8][9][10][11]. In [8], the switching between the bandwidth is realized by changing characteristics impedance of the stepped-impedance stubs while 2 of 11 in [9] bandwidth is tuned by varying the length of the stubs.…”

Section: Introductionmentioning

confidence: 99%

“…Several ring resonator BPFs are reported in [8][9][10][11]. In [8], the switching between the bandwidth is realized by changing characteristics impedance of the stepped-impedance stubs while 2 of 11 in [9] bandwidth is tuned by varying the length of the stubs. The bandwidth is controlled by keeping center frequency fixed in [10,11].…”

Section: Introductionmentioning

confidence: 99%

Demonstration of Reconfigurable BPFs with Wide Tuning Bandwidth Range Using 3λ/4 Open- and λ/2 Short- Ended Stubs

et al. 2020

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In this paper, two implementations of reconfigurable bandwidth bandpass filters (BPFs) are demonstrated both operating at a fixed center frequency of 2.4 GHz. The proposed reconfigurable bandwidth filters are based on a square ring resonator loaded with λg/4 open-ended stubs that are permanently connected to the ring and converted to either 3λg/4 open-ended stubs or λg/2 short-ended stubs by means of positive-intrinsic-negative(PIN) diodes to implement two reconfigurable bandwidth states for each case. Due to the symmetrical nature of the design, even- and odd-mode analysis is used to derive the closed-form to describe the reconfigurable filters’ behavior. The switching between narrowband and wideband is achieved using PIN diodes. In the first implementation (λg/4 open-ended stubs to 3λg/4 open-ended stubs), a reconfigurable bandwidth bandpass filter is proposed where additional out-of-band transmission zeros are generated by integrating a λg/2 open-ended stub at the input port. In the second implementation (λg/4 open-ended stubs to λg/2 short-ended stubs), further improvement in the upper stopband is achieved by utilizing a pair of parallel coupled lines (PCLs) as feeding lines and a pair of λg/4 high impedance short-ended stubs implemented at the input and output ports. To verify the validity of the simulated results, the prototypes of the proposed reconfigurable filters were fabricated. For the first case, measured insertion loss is less than 1.8 dB with a switchable 3-dB fractional bandwidth (FBW) range from 28% to 54%. The measured results for the second case exhibit a low insertion loss of less than 1 dB and a 3-dB fractional bandwidth that can be switched from 34% to 75%, while the center frequency is kept constant at 2.4 GHz in both cases.

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A square ring resonator bandpass filter with asymmetrically loaded open circuited stubs

Cited by 5 publications

References 11 publications

Analisis Pengaruh Ukuran Geometri Stripline Terhadap Kinerja BPF Mikrostrip Square Ring Resonator

Analisis Pengaruh Ukuran Geometri Stripline Terhadap Kinerja BPF Mikrostrip Square Ring Resonator

Perancangan Bandpass Filter Pita Sempit pada Frekuensi L-Band untuk Aplikasi Synthetic Aperture Radar (SAR)

Demonstration of Reconfigurable BPFs with Wide Tuning Bandwidth Range Using 3λ/4 Open- and λ/2 Short- Ended Stubs

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