Title :
Uniplanar MMICs and their applications
Author :
Muraguchi, Masahiro ; Hirota, Tetsuo ; Minakawa, Akira ; Ohwada, Kuniki ; Sugeta, Takayuki
Author_Institution :
NTT Corp., Kanagawa, Japan
Abstract :
A novel configuration called the uniplanar MMIC is proposed. It consists of coplanar waveguides, slotlines, air bridges, and lumped circuit elements (GaAs FETs, capacitors, inductors, resistors, etc.), which are integrated on a single side of the GaAs substrate. The uniplanar MMIC has no via holes and no thin polished substrates. As an application of the unipolar MMIC configuration, key monolithic circuits for a 26-GHz full MMIC receiver have been designed and fabricated. The circuits developed, namely, 26-GHz low-noise amplifier, a 26-GHz medium-power amplifier, a 6.5-GHz dual-output voltage-controlled oscillator, 6.5/13-GHz and 13/26-GHz frequency doublers, and a 26-GHz/1-GHz FET mixer, provide improved RF performance with a simplified fabrication process.<>
Keywords :
MMIC; frequency multipliers; microwave amplifiers; microwave oscillators; mixers (circuits); power amplifiers; radio receivers; variable-frequency oscillators; 6.5 to 26 GHz; FET mixer; GaAs; GaAs FETs; GaAs substrate; RF performance; SHF receiver; VCO; air bridges; capacitors; coplanar waveguides; dual-output voltage-controlled oscillator; frequency doublers; inductors; low-noise amplifier; lumped circuit elements; medium-power amplifier; microwave IC; monolithic circuits; resistors; simplified fabrication process; slotlines; uniplanar MMIC; Bridge circuits; Capacitors; Coplanar waveguides; FETs; Gallium arsenide; Inductors; Low-noise amplifiers; MMICs; Resistors; Slotline;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
