A pattern-reconfigurable Yagi–Uda antenna based on liquid metal is presented. The consists of a balun-fed active dipole and pair stretchable passive parasitic dipoles, which are implemented by eutectic gallium-indium (EGaIn) alloy embedded in microfluidic channels. dipoles driven at each end two low-cost, three-dimensional printed media rods. Afterward, spinning the rods different angles leads ...

A compact, flexible, long-range, and impedance transformer balun-like integrated UHF RFID tag antenna is proposed for the detection of water bottles. To alleviate performance a in close proximity to high dielectric material such as water, radiating element uses folded, unbalanced strips made arms wrapped around tag's body. As result, wide bandwidth with reasonably good radiation resistance achi...

A dual-band base station antenna is introduced in this paper. The proposed composed of baluns, bowtie patches, and a split ring. two pairs patches excited by the orthogonal balun structures can achieve dual polarization. ring used to yield additional resonances broaden impedance bandwidth. In way, compact obtained with size 0.41 λc × 0.13 (λc wavelength free space at lowest operating frequency ...

A single-ended-to-differential conversion balun-LNA is proposed in this paper for subsampling architecture of receiver. The LNA adopts the inductively degenerated common-source common-gate (cascade) structure with noise canceling technique, which can achieve high gain and low noise figure without extra components and power consumption. For the subsampling receiver of IoT narrowband application,...

In this paper, a wide-band low cross polarization antenna with a structure of microstrip line coupling to slot line as the balun is proposed. The radiation part of the antenna is fed by two pairs of parallel transmission line via a transition from a slot line which is coupled by a microstrip line. Because it is fed by parallel transmission lines, which is balanced-fed structure, the antenna can...

We describe here a 1.52 m (5 ft.) diameter Impulse Radiating Antenna (IRA) for use in a high-voltage radar system that uses a single antenna and a directional coupler. This antenna, designated the IRA-6, was designed to operate at 30 kV. To accommodate the higher voltage, we introduced a number of new features, including a larger-diameter 100-ohm cable, cable stubs at the feed point, and gaps i...

Single-ended to differential micromechanical filters with large stop band rejection are ideal replacements for conventional SAW and FBAR filters [1,2] in sensor network transceivers and GSM and W-CDMA cell phones, which depend on differential signal paths. A differential output from the front-end filter eliminates the need for an off-chip balun in front-end radio design and increases filter lin...

A novel low power RF receiver front-end for 3–5 GHz UWB is presented. Designed in the 0.13 μm CMOS process, the direct conversion receiver features a wideband balun-coupled noise cancelling transconductance input stage, followed by quadrature passive mixers and transimpedance loading amplifiers. Measurement results show that the receiver achieves an input return loss below −8.5 dB across the 3....