Broadband circularly polarized fabry-perot antenna integrated with wideband phase shifter for satellite communication

2016 ◽  
Vol 58 (5) ◽  
pp. 1109-1113 ◽  
Author(s):  
Fan Qin ◽  
Steven Gao ◽  
Gao Wei ◽  
Jiadong Xu
2014 ◽  
Vol 62 (1) ◽  
pp. 19-26 ◽  
Author(s):  
Robert Orr ◽  
George Goussetis ◽  
Vincent Fusco

1973 ◽  
Vol 51 (23) ◽  
pp. 2495-2497
Author(s):  
C. K. Campbell

With the aid of a phasor diagram it is shown that the scalar effective permeability μe = (μ2 − K2)/μ of a parallel-plate longitudinally magnetized microwave ferrite phase shifter may be simply obtained in terms of four circularly polarized waves relating to the permeability tensor eigenvalues μ + K and μ − K.


2015 ◽  
Vol 24 (4) ◽  
pp. 898-905 ◽  
Author(s):  
K. Pitra ◽  
Z. Raida ◽  
J. Lacik

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 42897-42907 ◽  
Author(s):  
Niamat Hussain ◽  
Min-Joo Jeong ◽  
Jiwoong Park ◽  
Nam Kim

Sensors ◽  
2020 ◽  
Vol 20 (9) ◽  
pp. 2612 ◽  
Author(s):  
Jacopo Iannacci ◽  
Giuseppe Resta ◽  
Alvise Bagolini ◽  
Flavio Giacomozzi ◽  
Elena Bochkova ◽  
...  

RF-MEMS, i.e., Micro-Electro-Mechanical Systems (MEMS) for Radio Frequency (RF) passive components, exhibit interesting characteristics for the upcoming 5G and Internet of Things (IoT) scenarios, in which reconfigurable broadband and frequency-agile devices, like high-order switching units, tunable filters, multi-state attenuators, and phase shifters will be necessary to enable mm-Wave services, small cells, and advanced beamforming. In particular, satellite communication systems providing high-speed Internet connectivity utilize the K and Ka bands, which offer larger bandwidth compared to lower frequencies. This paper focuses on two design concepts of multi-state phase shifter designed and manufactured in RF-MEMS technology. The networks feature 4 switchable stages (16 states) and are developed for the K and Ka bands. The proposed phase shifters are realized in a surface micromachining RF-MEMS technology and the experimentally measured parameters are compared with Finite Element Method (FEM) multi-physical electromechanical and RF simulations. The simulated phase shifts at both the operating bands fit well the measured value, despite the measured losses (S21) are larger than 5–7 dB if compared to simulations. However, such a non-ideality has a technological motivation that is explained in the paper and that will be fixed in the manufacturing of future devices.


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