نتایج جستجو برای: phase shifter
تعداد نتایج: 599785 فیلتر نتایج به سال:
This paper introduces a new receiver for joint blind equalization and carrier phase recovery. The new receiver overcomes several disadvantages available in literature in this area by accomplishing modulus equalization and phase recovery in two independent operations. The proposed structure enables alternative and independent approaches to be taken for the design of the modulus and phase equaliz...
We present a comprehensive study on how to design and fabricate low loss electro-optic phase shifters based on an electro-optic polymer and the silicon nitride and silicon oxynitride waveguide material systems. The loss mechanisms of phase shifters with an electro-optic (EO) polymer cladding are analyzed in detail and design solutions to achieve lowest losses are presented. In order to verify t...
This paper presents the concept of time-varying Butterworth filters with linear phase response. The compensation of the phase characteristics is carried out with the aid of the phase shifter system. The paper shows that it is possible to shorten the transient state in low-pass phasecompensated analog filters by varying in time selected parameters. This paper contains simulation results of the p...
In this study, both full 3D electromagnetic and equivalent circuit modelling of a radio frequency microelectromechanical systems (RF MEMS) single-pole eight-throw rotary switch are reported for the first time. Excellent agreement has been achieved between measurements and modelled performance for frequencies up to 12 GHz. In order to validate the effectiveness of the modelling, a 2-bit true tim...
Presented is a stretchable liquid metal coaxial phase shifter constructed of center conductor, shield in the shape hollow cylinder, and rubber-based polymer (Ecoflex™00-30) which encases insulates metal. The design builds on enhances previous research consisting same but with five hand-woven strands. By modifying to consist cylinder rather than woven strands, TEM breakdown at high frequencies d...
A trinary-phased array, in which a phase quantization unit of phase shifters is 120 degrees is examined. The phase quantization unit of 120 degrees is the roughest value in practical phased array applications. Despite its rough phase quantization, the sidelobe level of less than −9 dB is attained by a genetic algorithm approach. key words: phased array, trinary phase shifter sidelobe reduc-
We demonstrate the in-situ frequency discrimination and continuous phase tuning of high-speed optical clocks generated from a directly modulated/encoded laser diode with respect to a free-running microwave clock. This is performed by using a dc-voltage controlled, frequency-discriminated optoelectronic phase shifter (OEPS). The transfer function of the phase shifter versus controlled voltage is...
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