This paper describes the design and measurement of a double-balanced monolithic star mixer using a double planar baluns with a Marchand section followed by a coupled-line structure. The microwave and millimeter-wave integrated circuits (MMICs) are fabricated on commercially available InGaAs/AGaAs pseudomorphic high-electron-mobility transistor (PHEMT) processes with a chip size of 1.43 × 1.28 mm2. The typical up-conversion loss is 7 dB with an LO-to-RF isolation better than 28 dB.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering