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A transversal narrow-band bandpass filter with improved stopband based on open/shorted coupled lines and transversal signal-interaction concepts are proposed in this paper. By utilizing the stopband transmission characteristic of the open/shorted coupled lines, three transmission zeros can be easily achieved to suppress the second harmonic for the bandpass filter. The transmission zeros near the passband...
A novel SIW SPDT switch based on switchable HMSIW unit was proposed in this work. The concept of switchable HMSIW units with shorted and opened stubs were studied, investigated and compared, bandwidth enhancement method for switchable units was proposed and demonstrated. Based on these switchable units, HMSIW/SIW-based SPDT switch were designed, fabricated and measured. Measured results show that...
We consider wireless power transfer, realized by means of resonant reactive magnetic coupling, between one transmitter and two receivers. It is shown that, by applying a rigorous analytical procedure, maximum power transfer can be achieved by appropriately selecting the load values and closed form formulas for the latter are given. Similarly, closed form formulas for load values that maximize efficiency...
A novel high selectivity wideband balanced filter using T-shaped multi-mode resonators is proposed in this paper. Two transmission zeros near the passband for the differential mode can be easily achieved for the balanced filter. In addition, the common mode can be suppressed with three transmission zeros with insertion loss greater than 15 dB over a wide frequency band. A prototype with 3-dB fractional...
A novel artificial ground composed by several non-periodic rectangle artificial magnetic conductor (RAMC) structures is firstly proposed, and employed as the ground plane of a probe-fed patch antenna. Based on the design strategy of parasitic patches, the dimensions and arrangements of these RAMC cells in the artificial ground as well as the size of the ground plane are investigated and discussed...
A new structure of unequal power divider with a power division ratio of 15 is proposed in this paper. The new guiding structures constructed by a composite line consisting of distributed and lumped elements can be applied to release the fabrication limitation of microstrip lines with high/extra low characteristic impedance, and then reduce the overall circuit area. For verifying the validity of the...
A 2×2 60-GHz differential-fed patch antenna array was developed using low-temperature co-fired ceramic (LTCC) multilayer technology with high gain and low cross-polarization level. The antenna elements were constructed by radiation patches and folded L-shaped feeds. A novel soft-surface structure was designed to suppress the surface wave and enhance antenna gain. Substrate-integrated waveguide (SIW)...
The paper presents a dual-band Wilkinson power divider implemented with offset double-side parallel strip line (DSPSL). The closed-form equations for the design of the power divider operating at arbitrary dual band with equal or unequal power dividing ratio are derived based on circuit theory and transmission line theory. In order to demonstrate the validity of the equations, a 3dB power divider and...
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