scholarly journals A Codesigned Compact Dual-Band Filtering Antenna with PIN Loaded for WLAN Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Shanxiong Chen ◽  
Yu Zhao ◽  
Maoling Peng ◽  
Yunji Wang
Keyword(s):  
Communication Systems ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Antenna System ◽  
Dual Band ◽  
Pin Diode ◽  
Area Network ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Band Pass

A codesigned compact dual-band filtering antenna incorporating a PIN diode for 2.45/5.2 GHz wireless local area network (WLAN) applications is proposed in this paper. The integrated filtering antenna system consists of a simple monopole radiator, a microstrip dual-band band-pass filter, and a PIN diode. The performance of the filtering antenna is notably promoted by optimizing the impedance between the antenna and the band-pass filter, with good selectivity and out-of-band rejection. The design process follows the approach of the synthesis of band-pass filter. In addition, the PIN diode is incorporated in the filtering antenna for further size reduction, which also widens the coverage of the bandwidth by about 230% for 2.4 GHz WLAN. With the presence of small size and good filtering performances, the proposed filtering antenna is a good candidate for the wireless communication systems. Prototypes of the proposed filtering antenna incorporating a PIN diode are fabricated and measured. The measured results including return losses and radiation patterns are presented.

scholarly journals Design of A Dual-Wide Band BPF Utilizing Parallel Coupled Microstrip Lines and A Centered Arrow-Shaped Resonator

2020 ◽  
Vol 23 (2) ◽  
pp. 153-158
Author(s):  
Ahmed Lateef Khudaraham ◽  
Dhirgham Kamal Naji
Keyword(s):  
Communication Systems ◽  
Satellite Communication ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Wide Band ◽  
Local Area ◽  
Area Network ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Strip Lines

This paper presents a dual wide-band band pass filter (DWB-BPF) by using two parallel, symmetrical micro-strip lines loaded by a centered resonator, consisting of a T- and a triangle-shaped geometry, attached at the lower and upper ends, respectively. The filter reveals good performance and both the passbands can be independently controlled by adjusting specific parts of the filter. The proposed BPF is simulated by using CST microwave studio package and the simulated result is verified experimentally with good agreement between the two results.  The fabricated prototype BPF demonstrates two passbands located at 2.3 GHz and 6.35 GHz center frequencies with 39% and 23.6% of 3-dB fractional bandwidth (FBW), respectively and a good insertion and return losses. The designed BPF can be targeted for wireless local area network (WLAN), WIFI and satellite communication systems.

scholarly journals Filtering Power Divider menggunakan Filter SIW untuk Aplikasi WLAN 5,8 GHz

2021 ◽  
Vol 9 (3) ◽  
pp. 703
Author(s):  
HARDI NUSANTARA ◽  
ARIEF BUDI SANTIKO ◽  
ACHMAD MUNIR
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Simulation Software ◽  
Power Divider ◽  
Area Network ◽  
Band Pass Filter ◽  
Substrate Integrated Waveguide ◽  
Pass Filter ◽  
Band Pass

ABSTRAKDalam makalah ini dikembangkan sebuah pembagi daya yang terintegrasi dengan proses filtering yang dinamakan Filtering Power Divider (FPD) untuk mendapatkan ukuran perangkat yang compact. FPD yang diusulkan terdiri dari 2 buah Band Pass Filter (BPF) yang dirancang berdasarkan teknik Substrate Integrated Waveguide (SIW) untuk beroperasi pada frekuensi Wireless Local Area Network (WLAN) 5,8 GHz. Optimasi dilakukan dengan menggunakan sebuah perangkat lunak simulasi untuk menyelidiki pengaruh parameter filter yang berbeda terhadap proses pemfilteran serta tanggapan keluaran FPD. Substrat dielektrik Duroid 5880 dengan ketebalan 1,575 mm digunakan untuk merealisasi FPD dengan total dimensi 95 mm x 70 mm. FPD yang direalisasi memiliki tanggapan bandwidth sebesar 75 MHz pada rentang frekuensi 5,9 GHz hingga 5,975 GHz dan isolasi antar port keluaran sebesar 20 dB.Kata kunci: Band Pass Filter (BPF), filtering power divider, Substrate Integrated,Waveguide (SIW), Wireless Local Area Network (WLAN).ABSTRACTIn this paper power divider integrated with filtering process, named as Filtering Power Divider (FPD), is developed to achieve a compact size of the device. The proposed FPD is composed of 2 pieces of Band Pass Filter (BPF) designed based on Substrate Integrated Waveguide (SIW) to operate at the Wireless Local Area Network (WLAN) frequency of 5.8 GHz. The optimizations are carried out using a simulation software to investigate the effect of different filter parameters to the filtering process as well as to the output response of FPD. A Duroid 5880 dielectric substrate with the thickness of 1.575 mm is used to realized the FPD with the total dimensions of 95 mm x 70 mm. The realized FPD has a bandwidth response of 75 MHz in the frequency range of 5.9 GHz to 5.975 GHz and isolation between output ports is 20 dB.Keywords: Band Pass Filter (BPF); filtering power divider; Substrate Integrated Waveguide (SIW); Wireless Local Area Network (WLAN).

scholarly journals Perancangan Band Pass Filter Mikrostrip Parallel Coupled Line pada Frekuensi 5,8 GHz

TRANSIENT ◽  
2019 ◽  
Vol 7 (3) ◽  
pp. 715
Author(s):  
Ifki Arifatul Utami ◽  
Teguh Prakoso ◽  
Imam Santoso
Keyword(s):  
Insertion Loss ◽  
Return Loss ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Area Network ◽  
Band Pass Filter ◽  
Design Environment ◽  
Coupled Line ◽  
Pass Filter ◽  
Band Pass

Pita frekuensi 5,8 GHz (5725 – 5825 MHz) telah ditetapkan oleh Kementerian Komunikasi dan Informasika Republik Indonesia untuk layanan pita lebar nirkabel. Layanan Wireless Local Area Network (WLAN) juga menggunakan pita frekuensi ini. Sebagaimana layaknya sistem komunikasi nirkabel, perangkat keras pada pita frekuensi ini juga memerlukan tapis lolos rentang (band-pass filter, BPF) untuk memilih frekuensi serta menekan derau dan interferensi. Tugas Akhir ini merancang tapis mikrostrip parallel coupled line dengan tanggapan lolos rentang. Bahan yang digunakan adalah Rogers RO4350B (permitivitas relatif 3,66 pada frekuensi  8-40 GHz dan rugi-rugi dielektrik 0,0037 diukur pada frekuensi 10 GHz). Spesifikasi tapis diturunkan dari analisis terhadap datasheet tapis komersial yaitu lebar pita 100 MHz, nilai insertion loss <1 dB dan return loss ≥11 dB, orde tiga polynomial Chebyshev. Perangkat lunak yang digunakan adalah AWR Design Environment 10 untuk menentukan skematika rangkaian dan nilai komponen, serta simulator elektromagnetik CST Microwave Studio 2014 untuk verifikasi desain. Proses optimasi desain untuk mencapai spesifikasi dibantu dengan Design of Experiment (DOE). Hasil simulasi DOE diperoleh nilai komponen baru yaitu, W dan  masing-masing sebesar 1,61 mm dan 7,23 mm. Dengan nilai komponen baru tersebut diperoleh nilai insertion loss dan return loss masing-masing sebesar 1,51 dB dan 29,32 dB, dan lebar pita sebesar 67 MHz. 

Tunable dual-band resonators for communication systems

2010 ◽  
Vol 2 (3-4) ◽  
pp. 245-253 ◽  
Author(s):  
David Girbau ◽  
Antonio Lázaro ◽  
Albert Pérez ◽  
Esther Martínez ◽  
Lluís Pradell ◽  
...  
Keyword(s):  
Communication Systems ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Local Area ◽  
Dual Band ◽  
Area Network ◽  
Resonator Design ◽  
Depth Analysis ◽  
Stepped Impedance Resonator ◽  
Constant Section

This paper proposes the design of tunable dual-band resonators for multi-band multi-standard systems. The main objective is to provide frequency tunability in the second resonance while maintaining the first resonance fixed. To this end, two tunable resonators are proposed: the capacitive-loaded stepped-impedance resonator and the capacitive-loaded hole resonator. The work is divided into two main parts. In the first part, an in-depth analysis of the capacitive-loaded stepped-impedance resonator (SIR) structure is done; it provides analytical closed-form design equations that ease the resonator design in contrast to the several approaches available in the literature to date. The analysis is also particularized to the case of the capacitive-loaded constant-section resonator and extended to the capacitive-loaded hole resonator. In addition, a study of the quality factor in capacitively tuned SIRs is also provided. In the second part, resonators are integrated in three dual-band tunable filters, one based on the capacitive-loaded constant-section resonator, another one on the capacitive-loaded SIR, and finally on the capacitive-loaded hole resonator. Two of these filters demonstrate operation in wireless local-area network frequency bands, with a fixed first band at 2.45 GHz and a second band which can be tuned between 5.75 and 5.25 GHz.

scholarly journals Design of Dual Ultra–Wideband Band–Pass Filter Using Stepped Impedance Resonator λg/4 Short Stubs and T–Shaped Band-Stop Filter

Electronics ◽  
2021 ◽  
Vol 10 (16) ◽  
pp. 1951
Author(s):  
Kicheol Yoon ◽  
Kwanggi Kim
Keyword(s):  
Wireless Communication ◽  
Insertion Loss ◽  
Communication Systems ◽  
Dual Band ◽  
Wireless Communication Systems ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Band Stop Filter ◽  
Band Pass ◽  
Stepped Impedance Resonator

Portable wireless communication systems are increasingly in demand in small sizes for human convenience. In wireless communication systems, the performance, size, and unit cost are very important. A band−pass filter is important to sharp cut–off frequency characteristics, size, and frequency selectivity in wireless communication systems. The band−pass filter has three types of techniques in the transmission−zero method, stub−loaded resonator, and stepped impedance resonator for the sharp cut−off frequency characteristic, adjustable bandwidth, and excellent frequency response characteristics. To obtain these characteristics, the impedance ratio and length of a stub are mainly adjusted. It also utilizes a multi–mode technique to increase bandwidth. However, it is analyzed that the problem of reducing the size of the device still remains. To solve these problems, the paper is applied to a stub−loaded resonator and a stepped impedance resonator to control the impedance ratio and the length of the stub to obtain the results of the transmission−zero method, bandwidth control, and size reduction through the folded structure. Dual−band bandwidth was secured by integrating a T−shaped band−stop filter. The designed band–pass filter has center frequencies of 243 GHz and 7.49 GHz, and the insertion loss of a proposed band−pass filter is 0.102 dB and 0.103 dB. Additionally, the return loss of a proposed band−pass filter is 19.13 dB and 19.96 dB, respectively. The bandwidth of a filter is 120% and 105%, respectively. The size of the filter is 0.0708 λg × 0.0533 λg. The designed filter has a good skirt phenomenon, small size, low insertion loss, and dual−band characteristics.

scholarly journals Design of Dual-Band Dual-Mode Band-Pass Filter Utilizing 0° Feed Structure and Lumped Capacitors for WLAN/WiMAX Applications

Electronics ◽  
2020 ◽  
Vol 9 (10) ◽  
pp. 1697
Author(s):  
Ahmed A. Ibrahim ◽  
Wael A. E. Ali ◽  
Mahmoud A. Abdelghany
Keyword(s):  
High Selectivity ◽  
Stop Band ◽  
Dual Band ◽  
Pass Band ◽  
Area Network ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Band Region ◽  
Compact Size ◽  
Band Pass

Two dual-band second-order highly selective band pass filters operated at 3.5/5.5 GHz and 3.5/6 GHz for wireless local area network /worldwide interoperability for microwave access WLAN/WiMAX applications are introduced in this paper. The designed filters are inspired of utilizing two coupled open-loop resonators loaded with stub, spiral resonators and lumped capacitors. The filters are designed based on calculating the desired coupling matrix and the external quality factor. The first and the second filters are designed at the fundamental mode of 3.5 GHz then the first filter is loaded with two spiral resonators in the microstrip line to produce the desired band stop behaviour, which in turn achieves the second pass-band. However, the second band of the second filter is achieved by loading the stub with the lumped capacitors, which controls the second mode. The centre frequency of the second band is adjusted by varying the lumped capacitors values. The two designed filters have insertion loss less than 0.7 dB in the pass-band region, high selectivity with more than 4 transmission zeros and more than 20 dB attenuation level in the stop band region. The suggested filter has compact size and high selectivity with tunability behavior. The two filters are fabricated and measured to validate the simulated results.

scholarly journals Design and Realization of a Frequency Reconfigurable Antenna with Wide, Dual, and Single-Band Operations for Compact Sized Wireless Applications

Electronics ◽  
2021 ◽  
Vol 10 (11) ◽  
pp. 1321
Author(s):  
Wahaj Abbas Awan ◽  
Syeda Iffat Naqvi ◽  
Wael Abd Ellatif Ali ◽  
Niamat Hussain ◽  
Amjad Iqbal ◽  
...  
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Single Band ◽  
Dual Band ◽  
Operating Frequency ◽  
Reconfigurable Antenna ◽  
Area Network ◽  
Wireless Applications ◽  
Operating Modes ◽  
Compact Size

This paper presents a compact and simple reconfigurable antenna with wide-band, dual-band, and single-band operating modes. Initially, a co-planar waveguide-fed triangular monopole antenna is obtained with a wide operational frequency band ranging from 4.0 GHz to 7.8 GHz. Then, two additional stubs are connected to the triangular monopole through two p-i-n diodes. By electrically switching these p-i-n diodes ON and OFF, different operating frequency bands can be attained. When turning ON only one diode, the antenna offers dual-band operations of 3.3–4.2 GHz and 5.8–7.2 GHz. Meanwhile, the antenna with single-band operation from 3.3 GHz to 4.2 GHz can be realized when both of the p-i-n diodes are switched to ON states. The proposed compact size antenna with dimensions of 0.27λ0 × 0.16λ0 × 0.017λ0 at the lower operating frequency (3.3 GHz) can be used for several wireless applications such as worldwide interoperability for microwave access (WiMAX), wireless access in the vehicular environment (WAVE), and wireless local area network (WLAN). A comparative analysis with state-of-the-art works exhibits that the presented design possesses advantages of compact size and multiple operating modes.

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