The Eight-meter-wavelength Transient Array (ETA) is a new radio telescope consisting of 12 dualpolarized, 38 MHz-resonant dipole elements which are individually instrumented, digitized, and analyzed in an attempt to detect rare and as-yet undetected single dispersed pulses believed to be associated with certain types of astronomical explosions. This paper presents the design and demonstrated pe...

Abstract—A bidirectional high gain four-element printed dipole array for WLAN (2.4/5.8GHz) applications is analyzed and successfully implemented in this paper. Each element used is a double-side printed dipole fed with a balance twin-lead transmission line. A wide-band balun is implemented for the dipole array. Both simulated and measured data are pretty matched. According to the measured resul...

The Low Noise Amplifier (LNA) presented in this work offers a gain of 20 dB, a noise figure of 1.6 dB, with an input referred third-order intercept point of –4.5 dBm and a 1 dB compression point of -16 dBm at 5.2 GHz, using 0.35 μm BiCMOS SiGe. It operates on 5 V and requires 10 mA. The output and the input of the amplifier are matched internally to 50 Ω. The amplifier includes an image reject ...

⎯A loop antenna for near field readers is proposed. Through periodic interdigital capacitors, the phase of the current on the loop is compensated and kept in phase. Hence, a loop with a perimeter of one wavelength at 900 MHz achieves a uniform near magnetic field distribution inside the loop. A novel method is proposed to evaluate the performance of the coplanar waveguide (CPW) to coplanar stri...

This note describes tests made in March 2000 of a planar L-band orthomode transducer. The transducer consists of 4 probes symmetrically arranged in a circular waveguide and two wideband baluns, made from back-to-back slotline-to-microstrip transitions. We designed this device to model the performance of a millimeter wave transducer where probes and baluns are microfabricated with SiON thin-film...

To overcome the limited payload dedicated to onboard antennas for CubeSat/SmallSat applications, this paper presents a novel, foldable, dual-polarized Tightly Coupled Dipole Array (TCDA). In comparison previous vertical feeds used TCDAs, array integrates planar microstrip balun feed enable foldability. The proposed attains 5.4:1 (0.6-3.20 GHz) impedance bandwidth with VSWR < 3 at broadside and ...