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A 1.5?40 GHz frequency modulated continuous wave radar receiver front-end
This study presents an ultra-wideband receiver front-end, designed for a reconfigurable frequency modulated continuous wave radar in a 130 nm SiGe BiCMOS technology. A variety of innovative circuit components and design techniques were employed to achieve the ultra-wide bandwidth, low noise figure (NF), good linearity, and circuit ruggedness to high input power levels. The designed front-end is ca
Toward a fully integrated automotive radar system-on-chip in 22 nm FD-SOI CMOS
Next-generation automotive radar sensors are increasingly becoming sensitive to cost and size, which will leverage monolithically integrated radar system-on-Chips (SoC). This article discusses the challenges and the opportunities of the integration of the millimeter-wave frontend along with the digital backend. A 76?81 GHz radar SoC is presented as an evaluation vehicle for an automotive, fully de
RF Small and large signal characterization of a 3D integrated GaN/RF-SOI SPST switch
This paper presents the radio frequency (RF) measurements of an SPST switch realized in gallium nitride (GaN)/RF-SOI technology compared to its GaN/silicon (Si) equivalent. The samples are built with an innovative 3D heterogeneous integration technique. The RF switch transistors are GaN-based and the substrate is RF-SOI. The insertion loss obtained is below 0.4 dB up to 30 GHz while being 1 dB low
Microwave synthesis of Bessel, Bessel?Gauss, and Gaussian beams: a fully vectorial electromagnetic approach
Bessel, Bessel-Gauss, and Gaussian beams have widely been investigated in optics in the paraxial approximation, under the frame of a scalar wave theory. Such approximations can hardly be applied in the microwave/millimeter-wave range, where the vectorial nature of the electromagnetic fields cannot be neglected, and experimental realizations for some of these beams appeared only recently. In this w
A compact band-notched antenna with high isolation for UWB MIMO applications
A compact antenna module with a single band notch at wireless local area network (WLAN) (5.725?5.825 GHz) for ultra-wideband (UWB) multiple input multiple output (MIMO) applications is proposed. Proposed antenna which acquires size of 0.299 × 0.413 × 0.005 mm at 3.1 GHz consists of two symmetrical radiators placed side by side on global merchandise link (GML) 1000 substrate ( = 3.2, tan = 0.00
A fully-textile wideband AMC-backed antenna for wristband WiMAX and medical applications
Proposed is a wideband, low profile, fully flexible, and all-textile-based slotted triangular antenna loaded with a 2 × 2 textile-inspired artificial magnetic conductor to be worn on the wrist. The integrated antenna design is designed to cover the frequency band from 3.1 to 6.5 GHz. The integrated design has two main resonances, where the first one is at 3.5 GHz, which can serve the WiMAX communi
Planar suspended line technique based UWB-MIMO antenna having dual-band notching characteristics
This communication reports significant isolation improvement utilizing planar suspended line (PSL) technique in ultra wideband (UWB) antenna for Multiple Input Multiple Output (MIMO) application. The antenna exhibits dual-band notched characteristic in Wireless Local Area Network (WLAN) band covering 5.45?5.85 GHz range; and in 7.15?7.95 GHz range for X-band downlink operations in satellite commun
MRF volume 13 issue 5 Cover and Back matter
MRF volume 13 issue 5 Cover and Front matter
A Pythagorean tree fractal shape stub-loaded resonator as a UWB bandpass filter with wide stopband
A compact ultrawideband (UWB) bandpass filter (BPF) is designed by harnessing the efficacy of a Pythagorean tree fractal shape stub-loaded resonator. The design inherently provides the passband transmission poles, which make it convenient to be used in wide passband filtering circuits. The number and the position of the resonating modes can be controlled by increasing the iterations of the Pythago