| This article presents a new robust method for nding the parameters of Engen's six-port to four-port reduction algorithm for six-port reeectometer calibration. Like other previously published methods, it uses a minimum of ve loads with an unknown but constant absolute value of the reeection coeecient and unknown but well-distributed phases. However, the quality of the parameter estimates is im...

A new robust method for finding the parameters of Engen’s six-port-to-four-port reduction algorithm for sixport reflectometer calibration has been developed. Like other previously published methods, it uses a minimum of five loads with an unknown but constant absolute value of the reflection coefficient and unknown but well-distributed phases. However, the quality of the parameter estimates is ...

The design of broadband, highly integrated up-converters is described. Two up-converters have been designed to reduce the complexity and cost of broadband millimetre wave systems by integrating a number of functions into a compact MMIC. Broadband performance was achieved for 20-30 GHz and 35-45 GHz with OIP3 exceeding 24 and 15 dBm, respectively; 2xLO leakage better than 3 dBm and excellent gai...

A K-Band Push-Push VCO MMIC which has small size, high output power and low phase noise is presented. This push-push VCO utilize the embedded frequency doubling mechanism of cross coupled topology. A commercial InGaP/GaAs HBT technology with the f T of 60 GHz and the fMAX of 110 GHz was used for the implementation. The oscillation frequency is from 21.02 GHz to 21.17 GHz. The peak output power ...

This paper introduces a state-of-art on an ultra-wideband (UWB) technology in intelligent transport systems (ITS). To examine the detection performance of a UWB short-range radar for vehicular applications, we developed a 26-GHz band short-range UWB radar system with an embedded compact MMIC-based RF module. In this paper, we briefly comment on the current regulatory environment for UWB radar s...

This paper reports on the joint multinational initiative KORRIGAN launched in 2005 to accelerate the development of independent GaN HEMT foundries in Europe. The project addresses several key research areas such as materials, processing, reliability, thermal management and advanced packaging solutions. The benefits of GaN technology will be evaluated at system level with the fabrication of circ...

Novel miniaturized GaAs based bandpass filters for 5GHz band WLAN using diagonally end-shorted coupled lines and lumped capacitors are proposed. The new filter has a compact size, as small as a few degrees, and shows wider stopband characteristic over 35dB up to 60 GHz. A two-stage band pass filter with planar structure was designed and fabricated at a center frequency of 5.5 GHz, with chip sur...

This paper reports a novel band pass filter without any periodic response. The novel filter has been named Rectangular Parallel Coupled Line filter (RPCL) and derived from reforming the conventional parallel coupled line filters. The novel band-pass filter has narrowband response. RPCL filter with center frequency of 475 MHz, 1 dB pass-band of 10MHz and 25 dB stop-band of 50MHz has been reporte...

In this paper, a frequency reconfigurable circular antenna design and development is proposed for wireless devices. In the proposed design, a circular patch antenna with circular slot using two PIN diodes at the centre frequency 10 GHz was designed and simulated frequency reconfiguration is achieved in the frequency range of 9.69-10.2 GHz and the measured results shows the same effect in the fr...

In this letter, the design and measurement of the first SiGe integrated-circuit LNA specifically designed for operation at cryogenic temperatures is presented. At room temperature, the circuit provides greater than 25.8 dB of gain with an average noise temperature of 76 K and of 9 dB for frequencies in the 0.1–5 GHz band. At 15 K, the amplifier has greater than 29.6 dB of gain with an average o...