scholarly journals A NEW ULTRA-WIDEBAND MICROSTRIP-LINE FED ANTENNA WITH 3.5/5.5GHZ DUAL BAND-NOTCH FUNCTION

2009 ◽  
Vol 7 ◽  
pp. 79-85 ◽  
Author(s):  
Jie Ma ◽  
Ying-Zeng Yin ◽  
Shi-Gang Zhou ◽  
Luyu Zhao
Keyword(s):  
Microstrip Line ◽  
Ultra Wideband ◽  
Dual Band

Design of a Compact Bluetooth and UWB Antenna for Wireless Communications

2014 ◽  
Vol 711 ◽  
pp. 312-315
Author(s):  
Hui Feng ◽  
Hong Bao Mao ◽  
Guang Zheng Long
Keyword(s):  
Wireless Communications ◽  
Surface Area ◽  
Microstrip Line ◽  
Ultra Wideband ◽  
Antenna Design ◽  
Dual Band ◽  
Uwb Antenna ◽  
Frequency Bands ◽  
Dual Band Antenna

A compact and planar dual band antenna for Bluetooth and ultra-wideband (UWB) is presented. The antenna exhibits a dual band operation covering Bluetooth (2.4-2.484 GHz) and UWB (3.1-10.6 GHz) frequency bands. It is composed of a semi-circular and an L-shaped strip and fed by a microstrip line and built on a FR4 substrate with only 23 × 35 mm2surface area. Details of the antenna design and measured results are presented and discussed.

Dual-Band Microstrip-Line BPFs Using Tap-Coupling Resonators

2008 ◽  
Vol 128 (6) ◽  
pp. 878-884
Author(s):  
Nobuhiko Okuzaki ◽  
Yukihiro Shimakata ◽  
Mitsuyuki Yamauchi ◽  
Kouji Wada ◽  
Takashi Iwasaki
Keyword(s):  
Microstrip Line ◽  
Dual Band

scholarly journals Realizing UWB Antenna Array with Dual and Wide Rejection Bands Using Metamaterial and Electromagnetic Bandgaps Techniques

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 269
Author(s):  
Ayman A. Althuwayb ◽  
Mohammad Alibakhshikenari ◽  
Bal S. Virdee ◽  
Pancham Shukla ◽  
Ernesto Limiti
Keyword(s):  
Antenna Array ◽  
Ground Plane ◽  
Ultra Wideband ◽  
Dual Band ◽  
Area Network ◽  
Electromagnetic Bandgap ◽  
Uwb Antenna ◽  
Average Gain ◽  
Left Handed ◽  
Notched Band

This research article describes a technique for realizing wideband dual notched functionality in an ultra-wideband (UWB) antenna array based on metamaterial and electromagnetic bandgap (EBG) techniques. For comparison purposes, a reference antenna array was initially designed comprising hexagonal patches that are interconnected to each other. The array was fabricated on standard FR-4 substrate with thickness of 0.8 mm. The reference antenna exhibited an average gain of 1.5 dBi across 5.25–10.1 GHz. To improve the array’s impedance bandwidth for application in UWB systems metamaterial (MTM) characteristics were applied it. This involved embedding hexagonal slots in patch and shorting the patch to the ground-plane with metallic via. This essentially transformed the antenna to a composite right/left-handed structure that behaved like series left-handed capacitance and shunt left-handed inductance. The proposed MTM antenna array now operated over a much wider frequency range (2–12 GHz) with average gain of 5 dBi. Notched band functionality was incorporated in the proposed array to eliminate unwanted interference signals from other wireless communications systems that coexist inside the UWB spectrum. This was achieved by introducing electromagnetic bandgap in the array by etching circular slots on the ground-plane that are aligned underneath each patch and interconnecting microstrip-line in the array. The proposed techniques had no effect on the dimensions of the antenna array (20 mm × 20 mm × 0.87 mm). The results presented confirm dual-band rejection at the wireless local area network (WLAN) band (5.15–5.825 GHz) and X-band satellite downlink communication band (7.10–7.76 GHz). Compared to other dual notched band designs previously published the footprint of the proposed technique is smaller and its rejection notches completely cover the bandwidth of interfering signals.

scholarly journals Design of an Ultra-Wideband Microstrip-to-Slotline Transition on Low-Permittivity Substrate

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1329
Author(s):  
Jung Seok Lee ◽  
Gwan Hui Lee ◽  
Wahab Mohyuddin ◽  
Hyun Chul Choi ◽  
Kang Wook Kim
Keyword(s):  
Microstrip Line ◽  
Return Loss ◽  
Analytical Formula ◽  
Parameter Tuning ◽  
Ultra Wideband ◽  
Design Parameters ◽  
Analytical Line ◽  
Cross Sectional ◽  
Analysis And Design ◽  
Low Permittivity

Analysis and design of an ultra-wideband microstrip-to-slotline transition on a low permittivity substrate is presented. Cross-sectional structures along the proposed transition are analyzed using conformal mapping assuming quasi-TEM modes, attaining one analytical line impedance formula with varying design parameters. Although the slotline is a non-TEM transmission line, the transitional structures are configured to have quasi-TEM modes before forming into the slotline. The line impedance is optimally tapered using the Klopfenstein taper, and the electric field shapes are smoothly transformed from microstrip line to slotline. The analytical formula is accurate within 5% difference, and the final transition configuration can be designed without parameter tuning. The implemented microstrip-to-slotline transition possesses insertion loss of less than 1.5 dB per transition and return loss of more than 10 dB from 4.4 to over 40 GHz.

Ultra‐wideband tapered slot antenna with dual band‐notched characteristics

2014 ◽  
Vol 8 (1) ◽  
pp. 29-38 ◽  
Author(s):  
Dae Heon Lee ◽  
Hae‐Yong Yang ◽  
Young‐Ki Cho
Keyword(s):  
Ultra Wideband ◽  
Dual Band ◽  
Slot Antenna

A dual-band crossover using cross-shaped microstrip line for small and large band ratios

2017 ◽  
Vol 9 (8) ◽  
pp. 1629-1635 ◽  
Author(s):  
Idury Satya Krishna ◽  
Rusan Kumar Barik ◽  
S. S. Karthikeyan
Keyword(s):  
Insertion Loss ◽  
Matrix Method ◽  
Microstrip Line ◽  
Return Loss ◽  
Dual Band ◽  
Band Ratios ◽  
Form Design ◽  
Frequency Ratios ◽  
Novel Design ◽  
Large Frequency

A novel design of planar dual-band microstrip crossover operating at small and large frequency ratios is presented. These features of the proposed dual-band crossover are achieved by a cross-shaped transmission line. To obtain the dual-band characteristics, the required closed form design formulas are computed using the ABCD matrix method. Based on the design formulas, the realizable small and large band ratios are calculated as 1.65–2.14 and 4.1–8.76, respectively. To validate the computed band ratios, three examples of dual-band crossovers are presented. Finally, two prototypes of dual-band crossover working at smaller and larger frequency ratios are fabricated and tested. The fabricated dual-band crossovers exhibit good return loss and isolation of over 20 dB with minimal insertion loss.

scholarly journals Dual Band Notch, Compact, Low profile, Hybrid Ultra Wideband RDRA

2020 ◽  
Vol 10 (1) ◽  
pp. 166-169
Keyword(s):  
Radiation Pattern ◽  
Dielectric Resonator ◽  
Surface Current ◽  
Wide Band ◽  
Ultra Wideband ◽  
Dual Band ◽  
Ultra Wide Band ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Ground Structure

This paper presents a novel, compact Ultra Wide Band , Asymmetric Ring Rectangular Dielectric Resonator Antenna (ARRDRA), which is a unique combination of Thin Dielectric Resonator (DR), Fork shape patch and defective ground structure. The base of the proposed antenna is its Hybrid structure, which generates fundamental TM, TE and higher order modes that yields an impedance bandwidth of 119%. Proposed antenna provides a frequency range from 4.2 to 16.6 GHz with a stable radiation pattern and low cross polarization levels. Peak gain of 5.5 dB and average efficiency of 90% is obtained by the design. Antenna is elongated on a FR4 substrate of dimension 20 x 24x 2.168 mm3 and is particularly suitable for C band INSAT, Radio Altimeter, WLAN, Wi-Fi for high frequencies. Ease in fabrication due to simplicity, compactness, stable radiation pattern throughout the entire bandwidth are the key features of the presented design. Inclusion of Defective ground structure and asymmetric ring not only increases the bandwidth but also stabilize the gain and efficiency due to less surface current. Presented design launch an Ultra Wide Band antenna with sufficient band rejection at 4.48-5.34 and 5.64-8.33 GHz with stable radiation pattern and high gain.

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