Abstract A high-resolution clock phase shifter is implemented to adjust the of multiple clocks at 40 MHz, 80 or 640 MHz in ALTIROC chip. The has a coarse-phase and fine-phase achieve step size 97.7 ps an adjustable range 25 ns. fine delay unit based on Delay Locked Loop (DLL) operating MHz. fabricated 130 nm CMOS process. area 725 µm × 248 µm. Differential Non-Linearity (DNL) Integral (INL) are...

Nowadays, more and more researchers pay attention to phased array antennas, which play an important role in the fields of radio frequency identification (RFID), radar, and wireless communications because of their wonderful characteristics of beam forming. In order to maintain good performance in phase shift and feasibility, many techniques have been applied. Such as an electronic phase control ...

A study on the impact of the phase errors distribution on the performances of the phased array systems has been produced using a complete behavioral model for radiation-pattern characteristics. The main purpose of the study is to demonstrate that the rms phase error is a valuable figure of merit of phased array systems but it is not sufficient to completely describe the behavior of a real syste...

A novel 180◦ hybrid is proposed, based on a modified Gysel power combiner, using phase shifter and ground bridge for the difference output. Also the Defected Microstrip Structure has been used to increase the hybrid’s phase matching. All steps of the design are simulated using HFSS 11 and the final design is validated by the fabrication. It has good results between 7 GHz to 10 GHz and can be us...

Level shifters play critical roles in ultra low-voltage circuits and systems. a new low power level shifter (LS) is presented for robust logic voltage shifting from near/sub threshold to above threshold domain. The new circuit combines the multi threshold CMOS technique along with novel topological modifications to guarantee a wide voltage conversion range with limited static power and total en...

In this paper, two novel hybrid beamforming methods are proposed to reduce the cost and power consumption of hybrid beamformers with subconnected phase shifter network structure in massive multiple-input multiple-output (MIMO) systems. This is achieved by replacing some of the phase shifters with switches which, in general, are cheaper and have lower power consumption compared to phase shifters...

In this work, the design and analysis of new Level Shifter with Gate Driver for Li-Ion battery charger is proposed for high speed and low area in 180nm CMOS technology. The new proposed level shifter is used to raise the voltage level and significantly reduces transfer delay 1.3ns (transfer delay of conventional level shifter) to 0.15ns with the same input signal. Also, the level shifter with g...

Indium-tin-oxide nanowhiskers were employed as transparent electrodes in a liquid-crystal terahertz phase shifter. Transmittance of the device was as high as ∼75%. Phase shift exceeding π/2 at 1.0 THz is achieved in a ∼500  μm-thick cell. The driving voltage required for the device operating as a quarter-wave plate was as low as 17.68 V (rms), an improvement of nearly an order of magnitude over...