K/Ka-band coplanar waveguide directional couplers using a three-metal-level MMIC process

1996 ◽  
Vol 6 (2) ◽  
pp. 76 ◽  
Author(s):  
T. Gokdemir ◽  
I.D. Robertson ◽  
Q.H. Wang ◽  
A.A. Rezazadeh
Keyword(s):  
Coplanar Waveguide ◽  
Metal Level ◽  
Directional Couplers ◽  
Ka Band

A Compact K- Ka-Band Rectangular-to-Coplanar Waveguide Transition with Integrated Diplexer

2021 ◽  
pp. 1-1
Author(s):  
Kevin Erkelenz ◽  
Lennart P. P. B. Bohl ◽  
Anton Sieganschin ◽  
Arne F. Jacob
Keyword(s):  
Coplanar Waveguide ◽  
Ka Band ◽  
Waveguide Transition

Low phase noise Ka-band VCOs using InGaP/GaAs HBTs and coplanar waveguide

2002 ◽  
Author(s):  
M.S. Heins ◽  
D.W. Barlage ◽  
M.T. Fresina ◽  
D.A. Ahmari ◽  
Q.J. Hartmann ◽  
...  
Keyword(s):  
Phase Noise ◽  
Coplanar Waveguide ◽  
Ka Band ◽  
Low Phase Noise

scholarly journals A CPW-fed Sigma-shaped MIMO Antenna for Ka Band and 5G Communication Applications

2018 ◽  
Vol 8 ◽  
pp. 97-106
Author(s):  
B. T. P. Madhav ◽  
G. Jyothsna Devi ◽  
T. Anilkumar
Keyword(s):  
Massive Mimo ◽  
Coplanar Waveguide ◽  
Ground Plane ◽  
Signal To Noise ◽  
Ka Band ◽  
Average Efficiency ◽  
Mimo Antenna ◽  
Compact Antenna ◽  
Communications Systems ◽  
5G Communication

This article presents a MIMO compact antenna measuring 45×45×1.6 mm, on the FR4 substrate, proposed for Ka band and 5G communication applications. The proposed design is suitable to overcome the issues connected with massive MIMO. It has four-sigma-shaped radiating elements and a c-shaped ground plane with coplanar waveguide feeding. Its compact dimensions suit it for most existing communications systems. The aerial operates in the 21–30 GHz range, which covers Ka and 5G communication bands. The proposed antenna exhibits the average efficiency of more than 76% within its operating band and gives a minimum signal to noise plus interference ratio. The presented antenna covers several services, such as Ka band satellite downlink applications and future 5G communication applications.

Design & Modeling of 6-Bit Low Loss Ka Band Distributed MEMS Phase Shifter on GaAs

2011 ◽  
Vol 403-408 ◽  
pp. 4179-4183
Author(s):  
Anesh K. Sharma ◽  
Ashu K. Gautam ◽  
D.V.K. Sastry ◽  
S.G. Singh
Keyword(s):  
Phase Shift ◽  
Insertion Loss ◽  
Phase Shifter ◽  
Structural Parameters ◽  
Coplanar Waveguide ◽  
Actuation Voltage ◽  
Ka Band ◽  
Rf Systems ◽  
Total Phase ◽  
Digital Phase Shifter

This paper presents the design & modeling of distributed MEMS phase shifter for Ka band RF systems. The phase shift can be achieved by periodically placing the MEMS bridge variable capacitors as per Bragg frequency criteria on coplanar waveguide (CPW) using GaAs substrate. The EM & electromechanical simulation are carried out with various structural parameters to optimize the designs. The novelties like low insertion loss, low actuation voltage with distributed actuation pads & separate DC and RF are used to make the design unique. The EM simulations are carried out with HFSS and an insertion loss of -3.49 dB at 36GHz for a total Phase shift of 360 deg. was achieved with return loss of - 20.6 dB over a frequency band 34-38 GHz. The electromechanical simulations are carried to achieve the low actuation voltage of 10.3V. The significance of this study is the realization of the digital phase shifter through DMTL approach.

scholarly journals Ka-Band LTCC Stacked Substrate Integrated Waveguide Bandpass Filter

2018 ◽  
Vol 2018 ◽  
pp. 1-7
Author(s):  
Peng Zheng ◽  
Zhifu Liu ◽  
Mingsheng Ma ◽  
Yi Wang ◽  
Feng Liu ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
Coplanar Waveguide ◽  
Three Dimensional ◽  
Substrate Integrated Waveguide ◽  
Third Order ◽  
Ka Band ◽  
Vertical Coupling ◽  
Vertical Transition ◽  
Compact Size ◽  
Narrow Slot

A Ka-band substrate integrated waveguide bandpass filter has been designed and fabricated using low temperature co-fired ceramic (LTCC) technology. The in-house developed SICCAS-K5F3 material with a permittivity of 6.2 and a loss tangent of 0.002 was used. The size and surface area of the proposed bandpass filter are reduced by exploiting vertical coupling in vertically laminated three-dimensional structures. The coupling between adjacent cavities is realized by a narrow slot. A vertical transition structure between the coplanar-waveguide feed line and the substrate integrated waveguide is adopted to facilitate the internal signal connection. The demonstrated third-order filter has a compact size of 6.79 mm×4.13 mm×1.34 mm (0.63λ0  × 0.38λ0  × 0.12λ0) and exhibits good performance with a low insertion loss of 1.74 dB at 27.73 GHz and a 3 dB fractional bandwidth of 10 %.

InP based high gain Ka-band three stage coplanar waveguide monolithic amplifier

1993 ◽  
Author(s):  
S. Kosslowski ◽  
J. Dickmann ◽  
P. Narozny ◽  
A. Geyer ◽  
B.E. Maile ◽  
...  
Keyword(s):  
Coplanar Waveguide ◽  
High Gain ◽  
Ka Band

A Ka-band monolithic low phase noise coplanar waveguide oscillator using InAlAs/InGaAs HBT

2002 ◽  
Vol 46 (2) ◽  
pp. 249-253 ◽  
Author(s):  
Delong Cui ◽  
Shawn Hsu ◽  
Dimitris Pavlidis ◽  
Patrick Chin ◽  
Tom Block
Keyword(s):  
Phase Noise ◽  
Coplanar Waveguide ◽  
Ka Band ◽  
Low Phase Noise
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