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A new and low profile waveguide band-rejection filter (BRF) is proposed. In the waveguide BRF, two dielectric substrates with open-ended λ/2 mictostrip resonators are employed without via holes, and they are inserted in a hollow waveguide. For this simple configuration, this waveguide BRF is low-profile and easy to be fabricated compared with a conventional waveguide BRF, which employs resonant waveguide...
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...
The next generation of wireless communication is a ubiquitous radio system concept, providing wireless access from short-range to wide-area, with one single reconfigurable and adaptive system for all envisaged radio environments. This paper presents the design approach of RCO (reconfigurable concurrent oscillator) that simultaneously generates two or more signals of different frequencies that eliminate...
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