Novel Design of a Dual-Band Rat-Race Coupler with Large Power Division Ratio

2018 ◽  
Author(s):  
Jian-Gang Liang ◽  
Xu-Chun Zhang ◽  
Zhen-Heng Liao
Keyword(s):  
Dual Band ◽  
Large Power ◽  
Division Ratio ◽  
Novel Design

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.

A Novel Design of 5.5/7.5 ghz Dual Band-Notched Ultrawideband Antenna

2013 ◽  
Vol 55 (12) ◽  
pp. 2910-2915 ◽  
Author(s):  
Nasser Ojaroudi ◽  
Hamed Ojaroudi ◽  
Mohammad Ojaroudi ◽  
Noradin Ghadimi
Keyword(s):  
Dual Band ◽  
Novel Design

scholarly journals A Novel Architecture of Radix-3 Singlepath Delay Feedback (R3SDF) FFT Using MCSLA

2018 ◽  
Vol 10 (1) ◽  
pp. 37
Author(s):  
Periyarselvam K ◽  
Saravanakumar G ◽  
Anand M
Keyword(s):  
Power Consumption ◽  
Orthogonal Frequency Division Multiplexing ◽  
Digital Signal ◽  
Path Delay ◽  
Hardware Complexity ◽  
Large Power ◽  
Fft Processor ◽  
Novel Design ◽  
Multiplexing Systems ◽  
Single Path

Fast Fourier transform (FFT) is widely used in digital signal processing and telecommunications, particularly in orthogonal frequency division multiplexing systems, to overcome the problems associated with orthogonal subcarriers. A new algorithm of radix-3 FFT has been introduced in this work. The DFT of length N can be realized from three DFT sequences; each of length N/3.Radix-3 algorithm reduces the number of multiplications required for realizing DFT.A novel design of Radix-3pipelined Single path Delay Feedback (R3SDF) FFT using MCSLA has been proposed in this paper. First, the pipelined radix-3 SDF FFT method has been designed. It has less area and large power consumption and delay. In order to overcome these problems, modified carry select adder structure is used to perform the adder operation for reducing the power consumption and delay. Finally, the MCSLA is integrated into radix-3 SDF FFT processor. The hardware complexity and execution time for implementing radix-3 FFT algorithm can be reduced than other FFTs.

scholarly journals Novel design of dual-band unequal Wilkinson power divider

2014 ◽  
Vol 44 (1) ◽  
pp. 27-31 ◽  
Author(s):  
Xi Li ◽  
Lin Yang ◽  
Jia Hou ◽  
Yan-Ping Guo ◽  
Chen Gong
Keyword(s):  
Power Divider ◽  
Dual Band ◽  
Wilkinson Power Divider ◽  
Novel Design

scholarly journals A NOVEL DESIGN OF DUAL-BAND UNEQUAL WILKINSON POWER DIVIDER

2010 ◽  
Vol 12 ◽  
pp. 93-100 ◽  
Author(s):  
Xi Li ◽  
Yan-Jiong Yang ◽  
Lin Yang ◽  
Shu-Xi Gong ◽  
Xiao Tao ◽  
...  
Keyword(s):  
Power Divider ◽  
Dual Band ◽  
Wilkinson Power Divider ◽  
Novel Design

A Novel Design of Frequency Reconfigurable Antenna for UWB Application

Frequenz ◽  
2016 ◽  
Vol 70 (9-10) ◽  
Author(s):  
Xiaolin Yang ◽  
Ziliang Yu ◽  
Zheng Wu ◽  
Huajiao Shen
Keyword(s):  
Frequency Band ◽  
Dual Band ◽  
Reconfigurable Antenna ◽  
Pin Diodes ◽  
Notched Band ◽  
Uwb Applications ◽  
Novel Design ◽  
Frequency Reconfigurable Antenna

AbstractIn this paper, we present a novel frequency reconfigurable antenna which could be easily operate in a single notched-band (WiMAX (3.3–3.6 GHz)) UWB frequency band, another single notched-band (WLAN (5–6 GHz)) UWB frequency band and the dual band-notched UWB frequency band (the stopband covers the WiMAX (3.3–3.6 GHz) and WLAN (5–6 GHz)). The reconfigurability is achieved by changing the states of PIN diodes. The simulated results are in agreement well with the measured results. And the measured patterns are slightly changed with antenna reconfiguration. The proposed antenna is a good candidate for various UWB applications.

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