Phase shifter with high phase shifts using defected ground structures

2005 ◽  
Vol 41 (4) ◽  
pp. 196 ◽  
Author(s):  
S.M. Han ◽  
C.-S. Kim ◽  
D. Ahn ◽  
T. Itoh
Keyword(s):  
Phase Shifter ◽  
Phase Shifts ◽  
Defected Ground Structures ◽  
Ground Structures ◽  
High Phase

A planar microwave phase shifter using microstrip–CPW–microstrip transition with defected ground structures

2015 ◽  
Vol 9 (1) ◽  
pp. 71-77
Author(s):  
Indhumathi Kulandhaisamy ◽  
Malathi Kanagasabai ◽  
Indira Gandhi Sannasi ◽  
Srivastav ArunKumar ◽  
Gulam Nabi Alsath
Keyword(s):  
Phase Shifter ◽  
Coplanar Waveguide ◽  
Ground Plane ◽  
Transition Line ◽  
Differential Phase Shift ◽  
Microwave Phase Shifter ◽  
Defected Ground Structures ◽  
Ground Structures ◽  
Field Area ◽  
Microstrip Conductor

A novel planar printed phase shifter design is proposed in this paper. The design is developed with microstrip–conductor-backed coplanar waveguide– microstrip (MP–CBCPW–MP) transition line with different defected ground structures (DGS). The differential phase shift can be controlled by altering the DGS dimensions. Three prototypes with DGS dimensions 5 × 10, 10 × 20, and 10 × 30 mm2, are employed at the finite ground plane to achieve 5°, 20°, and 30° shift in phase respectively and are validated with the phase delay relation. The prominent effect of the transition region is to confine the field area. The resonance is at 700 MHz with a bandwidth of 400 MHz (0.4–0.8 GHz). The proposed phase shifter can be used for broadcasting applications. The proposed MP–CBCPW–MP transition phase shifter design with DGS is simulated, fabricated, and measured to analyze its performance.

Design and analysis of a planar UWB bandpass filter with stopband characteristics using MMR technique

2021 ◽  
pp. 1-8
Author(s):  
Gaurav Saxena ◽  
Priyanka Jain ◽  
Y. K. Awasthi
Keyword(s):  
Return Loss ◽  
Group Delay ◽  
Bandpass Filter ◽  
Ground Plane ◽  
Cost Effective ◽  
Ultra Wideband ◽  
Defected Ground Structures ◽  
Ground Structures ◽  
Multi Mode ◽  
Mode Resonator

Abstract In this paper, a ultra-wideband (UWB) bandpass filter with stopband characteristics is presented using a multi-mode resonator (MMR) technique. An MMR is formed by loading three dumbbell-shaped (Mickey and circular) shunt stubs placed in the center and two symmetrical locations from ports, respectively. Three circular and arrowhead defected ground structures on the ground plane are introduced to achieve UWB bandwidth with a better roll-off rate. The proposed filter exhibits stopband characteristics from 10.8 to 20 GHz with a 0.4 dB return loss. The group delay and roll-off rate of the designed filter are <0.30 ns in the passband and 16 dB/GHz at lower and higher cut-off frequencies, respectively. The dimension of the filter is 0.74λg × 0.67λg mm2 and was fabricated on a cost-effective substrate. All simulated results are verified through the experimental results.

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

Circular Aperture Slot Antenna With Common-Mode Rejection Filter Based on Defected Ground Structures for Broad Band

2013 ◽  
Vol 61 (5) ◽  
pp. 2425-2431 ◽  
Author(s):  
Edgar Colin-Beltran ◽  
Alonso Corona-Chavez ◽  
Tatsuo Itoh ◽  
J. Eduardo Mendoza-Torres
Keyword(s):  
Broad Band ◽  
Slot Antenna ◽  
Circular Aperture ◽  
Common Mode ◽  
Rejection Filter ◽  
Defected Ground Structures ◽  
Ground Structures
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