A Quasi-Lumped Element Series Array Resonator Antenna

This paper presents a 6-element series array quasi-lumped element resonator antenna. The proposed antenna employs an interdigital capacitor in parallel with a straight strip conductor whose centre finger is shorted across the capacitor. An array configuration is imperative as the gain of a single quasi-lumped element arrangement was only moderate and specifically put at about 9.4 dBi which may not be adequate for long distance communications. Relevant Equations for radiation pattern of the quasi-lumped element resonator (QLER) were derived and presented. The proposed antenna array exhibits a gain enhancement up to about 29.47% with a noticed size reduction of 80 × 30 sq. mm. Compared to standard long wire antenna and other approaches of capacitive loaded long wire antennas, it was proved that the proposed antenna has a relatively better performance yet with significant size reduction. Consequently, it is an ideal candidate for MMIC designs and wireless communication applications

A low noise and power consumption, high-gain LNA in 130 nm SiGe BiCMOS using transmission lines

Abstract: A two-stage low-noise amplifier (LNA), designed using GlobalFoundries’ 130 nm SiGe BiCMOS process technology for 56 – 64 GHz applications is presented in this paper. The LNA consists of two cascode stages, with inductive degeneration using short stub transmission lines with a quarter wavelength. The input matching and output matching adopt T-section matching to ensure optimal noise and input matching, while realizing high gain over the desired frequency using the interstage and output matching. The designed LNA uses 7.6 mW of dc power from a 1.5 V supply, while achieving 22.99 dB gain and a noise figure of 4.43 dB at 60 GHz. It is unconditionally stable and has a 3 dB bandwidth of 3.9 dB across the V-band