A novel design and analysis of low loss abrupt bends of dielectric slab waveguides

1992 ◽  
Vol 10 (5) ◽  
pp. 570-580 ◽  
Author(s):  
S. Safavi-Naeini ◽  
Y.L. Chow
Keyword(s):  
Dielectric Slab ◽  
Low Loss ◽  
Slab Waveguides ◽  
Novel Design

scholarly journals Layered THz waveguides for SPPs, filter and sensor applications

2019 ◽  
Vol 48 (4) ◽  
pp. 567-581 ◽  
Author(s):  
Jiamin Liu ◽  
Zia Ullah Khan ◽  
Siamak Sarjoghian
Keyword(s):  
Refractive Index ◽  
Layered Structure ◽  
Dielectric Slab ◽  
Low Loss ◽  
Sensor Applications ◽  
Te Mode ◽  
Tm Mode ◽  
Mode Characteristics ◽  
Plasmon Polaritons ◽  
Thz Waveguides

Abstract Theory of five kinds of layered structure THz waveguides is presented. In these waveguides, the modified and hybrid THz surface plasmon-polaritons (SPPs) are researched in detail. On these modes, the effects of material in each layer are discussed. The anti-resonant reflecting mechanism is also discussed in these waveguides. The mode characteristics of both TM mode and TE mode are analyzed for guiding TM mode with low loss and TE modes with huge loss in one waveguide: the TE modes filter application is put forward. The mode characteristics for one waveguide have useful sensor applications: for TE1 mode, we find that the low cut-off frequency has a sensitivity (S) to the refractive index of the dielectric slab. The highest S can be 666.7 GHz/RIU when n2 = 1.5, w = 0 and t = 0.1 mm. We believe these results are very useful for designing practical THz devices for SPPs, filter and sensor applications.

Design, Fabrication and Test of Modified Septum Antennas for Satellite Telecommunication

Frequenz ◽  
2018 ◽  
Vol 72 (7-8) ◽  
pp. 301-313 ◽  
Author(s):  
Mohammad Fazaelifar ◽  
Shahrokh Jam ◽  
Raheleh Basiri ◽  
H. Reza Azadi
Keyword(s):  
Axial Ratio ◽  
Beam Width ◽  
Center Frequency ◽  
Low Loss ◽  
Ground Station ◽  
Large Bandwidth ◽  
Low Weight ◽  
Measurement Results ◽  
Novel Design ◽  
Better Than

Abstract In this paper at first, the ordinary septum polarizer has been designed and used for parabolic reflector feed in Ground station antenna. Next, a novel design of modified septum polarizer with wider beam-width is proposed for satellite antenna. Compactness, low weight, large bandwidth, high TX/RX isolation, low axial ratio as well as low loss are the advantages of the septum polarizer. The designed antenna has high purity circular polarization ( $\left| {AR} \right| \le 1.6dB$ ) and low return loss. The frequency bandwidth of the antenna is about 27 % in the center frequency 11 GHz and the TX/RX isolation is better than 32 dB. Finally the septum polarizer, modified septum polarizer and reflector are fabricated and tested and there were good agreement between simulation and measurement results.

Novel design of a wide-angle low-loss Y-junction waveguide

2000 ◽  
Author(s):  
Wen-Ching Chang ◽  
Han-Bin Lin ◽  
Kuo C. Wei ◽  
Li-Ying Chang
Keyword(s):  
Wide Angle ◽  
Low Loss ◽  
Novel Design

A novel design of a low-voltage low-loss T-match RF-MEMS capacitive switch

2017 ◽  
Vol 24 (1) ◽  
pp. 561-574 ◽  
Author(s):  
Li-Ya Ma ◽  
Anis Nurashikin Nordin ◽  
Norhayati Soin
Keyword(s):  
Rf Mems ◽  
Low Voltage ◽  
Low Loss ◽  
Capacitive Switch ◽  
Novel Design
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