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A novel planar common-mode current(Ic) and differential-mode current(Id) detector is designed to provide a quick check of Ic and Id from the differential-mode signalling, size-reduction effect and possibility of lower manufacturing cost. This is made possible by implementing a branch-line balun which has metamaterial Composite Right- and Left-Handed(CRLH) 1-layer microstrip- structure phase shifter...
We propose a compact MIMO antenna with high inter-antenna isolation. It is featured by small radiating elements each of which comprises a meandered line and an open-loop, and a modified T-shaped decoupling structure to lower the interaction between the radiators. For a WiMAX band, the size of the entire MIMO antenna is 0.22λg showing effective miniaturization. And the gain, efficiency and isolation...
In this paper, we present a new low-profile composite right and left-handedness(CRLH) metamaterial zeroth order resonance(ZOR) antenna which originally has the bandwidth of 80MHz and is treated further to have 1428 MHz as an improved bandwidth for center frequency 2.5GHz as the ZOR frequency, by merging the −1st, zeroth, and +lst resonance modes to the ZOR. We have experienced nearly 50% fractional...
In this paper, a switchable beam pattern antenna design with a combination of electric-magnetic radiators for wireless communication is presented. To generate a switchable antenna radiation pattern, a structure combining with a dipole and a loop antenna is proposed. The frequency bandwidth defined by S11<−10 dB is approximately from 1.814–2.078GHz (256MHz) with maximum gain of 3.35dBi. Maximum...
In this paper, a novel circular patch antenna is proposed to have Zeroth Order Resonance(ZOR) generated based on the Metamaterial Composite Right- and Left-Handed(CRLH) structure. Making the in-phase electric field over the entire antenna other than a half-wavelength as the fundamental resonance mode of a ordinary microstrip patch or its positive multiple, the metallic patch is suggested to be capacitively...
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