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The next generation communication system demands for high data rate transfer leading towards exploring a higher level of frequency spectrum. In view of this demand, design of substrate integrated waveguide filters has been presented here in conjunction with metamaterial technology to increase the performance. A metamaterial based substrate integrated waveguide filter operating in the K band (18 –...
In this letter, we present a design method for K-band substrate-integrated waveguide (SIW) resonator filters utilizing mode. More importantly, a methodology for suppressing an unwanted higher-order mode ( ) close to the passband is demonstrated. It is shown that suppressing the unwanted mode give rise to the improved stopband performance. In addition, the resonator used...
This paper presents a planar millimetre-wave (mmwave) band pass filter based on substrate integrated waveguide (SIW) and substrate integrated coaxial line (SICL) techniques. Four half wavelength mircrostrip resonators are imbedded in the SIW cavity to improve Q-factor. Due to the closed configuration which eliminates radiation loss, the filter presents a relatively low insertion loss. The proposed...
The new design of a tunable microstrip phase shifter is proposed. It is based on the resonant microstrip structure in which a magnetodielectric is used as a substrate with controlled electromagnetic characteristics. The design of the phase shifter is characterized by a high degree of diminutiveness and high figure of merit. The manufactured breadboard of a five-resonator phase shifter demonstrated...
In this paper a magnetically tunable filter based on unilateral finlines is presented. The filter covers a tuning frequency range from 72 GHz to 95 GHz, achieving an insertion loss between 11.3 dB and 7.3 dB. In order to be able to adjust such high resonant frequencies, resonators made of hexaferrite material are used. Although the filter contains only two resonators, an off-resonance isolation of...
A novel compact coupled planar resonator (CCPR) based VCO (voltage controlled oscillator) using mode-coupling technique was developed in response to expensive high Ceramic and SAW resonators based signal source for wireless communications. One of the problems related to the conventional Ceramic/SAW based resonators (with high Q and low phase noise) is the challenge for integration in IC form. Instead...
In this paper, the design of a compact planar bandpass filter above a defected ground plane is presented. The filter is designed as a combination of microstrip resonators and exploits the properties of a planar electromagnetic bandgap (EBG) structure patterned unto the ground plane of the printed circuit board material to provide a very wide stopband of up to 5 times the fundamental frequency. The...
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