This article presents the design of ultra-wideband (UWB) true-time-delay lines (TTDLs) operating in microwave frequency.The design is inspired by the use of composite right/left-handed transmission line (CRLH TL) unit cells as the true-time-delay elements to obtain large time delay. A ...
内容提示: FEW-MODE FIBER TRUE TIME DELAY LINES Sergi Garcia, Ruben Guillem and Ivana Gasulla, Senior Member, IEEE ITEAM Research Institute, Universitat Politècnica de València, 46022 Valencia, Spain e-mail: sergarc3@iteam.upv.es ABSTRACT Space-division multiplexing optical fibers can provide ...
The studies of the designs on true-time-delay lines (TTDLs), n-bit digital phase shifters and wideband switched-line phase shifters using composite right/left-handed transmission-line (CRLH TL) unit cells are presented in this thesis. To simplify these designs, a symmetrical CRLH TL unit ce...
New types of UV curable polymeric ultra-long array waveguide true-time-delay (TTD) lines for wideband phased array antennas (PAA) are designed and fabricat... C Chen,Y Yi,W Fei,... - 《IEEE Journal of Quantum Electronics》 被引量: 67发表: 2010年 High-throughput silicon nanophotonic wave...
The input signal is a 10 GHz pulse train and as such, there will be spectral lines separated by 10 GHz (~0.08 nm) in the corresponding optical spectrum [Fig. 2(g), black trace]. On the other hand, the output is a 4-bit sequence, i.e., a sequence of 4 pulses each ...
The size of the switches and characteristic impedance of the transmission lines have been optimized to minimize insertion loss variation across different delay states while maintaining a flat delay response over a wide bandwidth. A basic 115 ps delay line cell is fabricated to prototype the circuit ...
The results are good references to design theoptical true time delaylines. 利用强度 频率混合调制模型研究了基于色散器件的光真延时线中色散导致的延时误差的变化规律。 2) true time delay(TTD) 光学真延时 3) True-time-delay 光控真时延 4) wave delay distortion ...
The results are good references to design the optical true time delay lines. 利用强度 频率混合调制模型研究了基于色散器件的光真延时线中色散导致的延时误差的变化规律。3) true time delay(TTD) 光学真延时4) optical controlled true time delay 光控实延时5...
Moreover, compared to conventional wavelength-variable delay lines with a few THz operation bandwidth, our index-variable OTTDL has an extremely broad operation bandwidth practically exceeding several tens of THz, which supports operation for various input optical signals with broad ranges of central ...
A CMOS true-time delay (TTD) circuit operating from 15 to 40 GHz is presented for integrated UWB multi-antenna systems. The TTD circuit employs a distributed active switching structure in which eight cascode switches are distributed along transmission lines, leading to 3-bit variations of the gro...