Ultra‐wideband short‐pulse power divider based on coplanar waveguide and slotline structure

2015 ◽  
Vol 51 (24) ◽  
pp. 2023-2024 ◽  
Author(s):  
Hongxin Zhao ◽  
Mei Yang
Keyword(s):  
Short Pulse ◽  
Coplanar Waveguide ◽  
Pulse Power ◽  
Ultra Wideband ◽  
Power Divider

scholarly journals Design of Output-Input Inversed Polarity Pulse Power Divider for Ultra-Wideband Communications

2018 ◽  
Vol 2018 ◽  
pp. 1-6
Author(s):  
Yufu Li ◽  
XiaoXing Yin
Keyword(s):  
Time Domain ◽  
Short Pulse ◽  
Input Pulse ◽  
Output Pulse ◽  
Pulse Power ◽  
Ultra Wideband ◽  
Power Divider ◽  
Power Dividers ◽  
Coplanar Stripline ◽  
Inverse Fourier Transformation

The implementation of a output-input inverse polarity pulse power divider based on the use of a SMA directly feed asymmetric coplanar stripline phase inverter for ultra-wideband communication is proposed. The novelty of the proposed power divider can be demonstrated that the electromagnetic energy guided by the CPW divides naturally into the slots of two asymmetric coplanar striplines and the polarity of the input pulse be reversed by asymmetric coplanar stripline to SMA transition. SMA connectors are mounted directly to the output asymmetric coplanar striplines and seven pairs of metal rods are soldered vertically to the substrate with seven resistors on top for improving the isolation and matching performance. The simulated and measured result in frequency domain agree well showing equal power division with less than 2 dB of additional insertion loss and in-phase for the outputs ports across the desired band of 0.4 GHz to 4.0 GHz (one decade) which indicates an ultra-wideband feature. The return loss for all the ports and the isolation between the two output ports are better than 10 dB which demonstrates good matching and isolation performance. To illustrate the short pulse performance of the proposed power divider, Inverse Fourier Transformation is used to calculate the input and output signals. The Gaussian pulse with a −10 dB bandwidth is utilized as the stimulus signal and the port signals in time domain are derived from the measured scattering parameters and discussed. Time domain results show that the same magnitude of the pulse is obtained between the two outputs and the polarity of the output pulse has been inversed compared to the input one. Simulated and measured results in both frequency and time domain agree well and show the feasibility and validity of the proposed power dividers.

scholarly journals A Compact Four-Port Coplanar Antenna Based on an Excitation Switching Reconfigurable Mechanism for Cognitive Radio Applications

2019 ◽  
Vol 9 (15) ◽  
pp. 3157 ◽  
Author(s):  
O ◽  
Jin ◽  
Choi
Keyword(s):  
Cognitive Radio ◽  
High Frequency ◽  
Coplanar Waveguide ◽  
Low Frequency ◽  
Loop Antenna ◽  
Ultra Wideband ◽  
Frequency Range ◽  
Uwb Antenna ◽  
High Isolation ◽  
Loop Antennas

In this paper, we propose a compact four-port coplanar antenna for cognitive radio applications. The proposed antenna consists of a coplanar waveguide (CPW)-fed ultra-wideband (UWB) antenna and three inner rectangular loop antennas. The dimensions of the proposed antenna are 42 mm × 50 mm × 0.8 mm. The UWB antenna is used for spectrum sensing and fully covers the UWB spectrum of 3.1–10.6 GHz. The three loop antennas cover the UWB frequency band partially for communication purposes. The first loop antenna for the low frequency range operates from 2.96 GHz to 5.38 GHz. The second loop antenna is in charge of the mid band from 5.31 GHz to 8.62 GHz. The third antenna operates from 8.48 GHz to 11.02 GHz, which is the high-frequency range. A high isolation level (greater than 17.3 dB) is realized among the UWB antenna and three loop antennas without applying any additional decoupling structures. The realized gains of the UWB antenna and three loop antennas are greater than 2.7 dBi and 1.38 dBi, respectively.

Electrodynamics of ultra-wideband short-pulse processes in irregular transmission lines

2002 ◽  
Vol 47 (7) ◽  
pp. 504-506
Author(s):  
M. N. Golikov ◽  
V. I. Koroza ◽  
V. N. Mikhailov
Keyword(s):  
Transmission Lines ◽  
Short Pulse ◽  
Ultra Wideband

Design of a planar ultra-wideband four-way power divider/combiner using defected ground structures

2017 ◽  
Author(s):  
Michele Squartecchia ◽  
Bruno Cimoli ◽  
Virginio Midili ◽  
Tom K. Johansen ◽  
Vitaliy Zhurbenko
Keyword(s):  
Ultra Wideband ◽  
Power Divider ◽  
Defected Ground Structures ◽  
Ground Structures
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