Browsing Administrative Staff Authors (Scholarly Publications) by Author "Narbudowicz, Adam"
Now showing items 1-8 of 8
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Compact broadband triple-ring five-port reflectometer for microwave brain imaging applications
Narbudowicz, Adam (2019)The broadband five-port reflectometer (FPR) is proposed using a triple-ring based technique. The design introduces a tapering in the inter-ring transmission lines (TLs), which provides additional degrees of freedom for ... -
Compact ultra-wideband monopole antenna loaded with metamaterial
Narbudowicz, Adam (2020)A printed compact monopole antenna based on a single negative (SNG) metamaterial is proposed for ultra-wideband (UWB) applications. A low-profile, key-shaped structure forms the radiating monopole and is loaded with ... -
Energy Efficient Dynamic Directional Modulation with Electrically Small Antennas
Marchetti, Nicola; Narbudowicz, Adam (2022)This letter proposes a compact and energy efficient Directional Modulation (DM) scheme for small and power constrained devices (e.g. Internet of Things wireless sensors). The scheme uses a uniform circular array of monopole ... -
Measurement of orientation and distance change using circularly polarized UWB signals
Narbudowicz, Adam (2022)The paper proposes methodology to employ circularly polarized UWB signals for simultaneous measurement of orientation and distance changes between transmitter and receiver. The proposed technique uses the rotational Doppler ... -
Metamaterial cell-based superstrate towards bandwidth and gain enhancement of quad-band CPW-fed antenna for wireless applications
Narbudowicz, Adam (2020)A multiband coplanar waveguide (CPW)-fed antenna loaded with metamaterial unit cell for GSM900, WLAN, LTE-A, and 5G Wi-Fi applications is presented in this paper. The proposed metamaterial structure is a combination of ... -
On the distortion of UWB circularly polarized time-domain pulses in presence of rotation
Narbudowicz, Adam (2019)The paper provides a first theoretical study on the effect of rotational Doppler on circularly polarized pulsed communication. Despite the circularly polarized communication being considered immune to signal fading due to ... -
Physical Limitation of Range-Domain Secrecy Using Frequency Diverse Arrays
Narbudowicz, Adam (2020)In this paper, the concept and recent development of exploiting frequency diverse array (FDA) and its variants for the physical-layer wireless security have been revisited and carefully examined. Following rigorous analytical ... -
RSS-based indoor localization system with single base station
Narbudowicz, Adam (2022)The paper proposes an Indoor Localization System (ILS) which uses only one fixed Base Station (BS) with simple non-reconfigurable antennas. The proposed algorithm measures Received Signal Strength (RSS) and maps it to the ...