En este trabajo se presenta el diseño de un desfasador de 5 bits programable digitalmente, para su uso en antenas matriciales híbridas que operan en la banda K, destinada a comunicaciones SATCOM. Está compuesto por dos amplificadores de ganancia variable (VGA) y un combinador de potencia.

This paper presents the design of a phase shifter operating over the 18-27 GHz frequency range. Thephase shifter is digitally programmable using a 65 nm CMOS process. Schematic simulation results provide an RMS value at 24 GHz of 3.5º for the phase and of 0.76 dB for the gain.

This paper presents the design of a new phase shifter to be used in a receiver of active antenna array operating in the range from 17 GHz to 22 GHz. Beamforming is achieved by controlling the phase of the signal in each radiant element. In this context, the phase shift is obtained by the combination of a quadrature signal generator (QSG) and a variable gain amplifier (VGA). This work is focused on the design of a VGA which has a set of dummy transistors to keep the input and output impedance constant. The phase shifter is digitally programmable using a 5-bit word. The system was laid out using a 65 nm CMOS process, and the physical post-layout results show that the phase shifter achieves root mean square errors of 4.5° for the phase and 0.79 dB for the gain at a frequency of 19.5 GHz. A comparative analysis with other recently published phase shifters shows that the proposed phase shifter presents a good compromise between power consumption and accuracy.

This paper presents the design of a new 5-bit digitally programmable phase shifter using CMOS technology of 65 nm, for its use in hybrid antenna beamformers opperating at the part of the K-band destinated to SATCOM communications. Simulation results are compared with previously reported alternatives.

This paper presents the design of a new phase shifter using CMOS technology of 65 nm, for its use in arrays of antennas opperating at the millimeter band (24 GHz). It is an active phase shifter digitally programmable using a 4-bit word.