Broadband phase shifter design for phased array radar systems

... for phased array antennas for more than half a century [17] Generally, there are three types of phase shifters: mechanical phase shifters, ferrite phase shifters and semiconductor device phase shifters ... loaded-line phase shifters, switched network phase shifters, reflection type phase shifters and vector summation phase shifters 2.1.1 Loaded-line Phase Shifter T...

Ngày tải lên: 12/09/2015, 09:21

... types of phased arrays: passive and active phased arrays In passive phased arrays, antenna elements have a central transmitter/receiver (T/R) and a power distribution network There is generally ... diagram of phased array demonstrator and the 360º VSPS .48 Figure 5-3: Photo of the phased array demonstrator .49 Figure 5-4: Photo of the DAC AD5390 control of...

Ngày tải lên: 01/10/2015, 17:27

... Towards a rational design for Sustainable urban Drainage Systems – Understanding (bio)geochemical mechanisms for enhanced heavy metal immobilization in filters Marnie Jean Feder MSc ... heavy metals by iron oxide coated and natural gravel media in Sustainable urban Drainage Systems ABSTRACT SuDS filter drains are simple, low-cost systems u...

Ngày tải lên: 22/12/2014, 17:08

... to achieve full adaptivity to the clutter, generally the radar system has to undergo a multiple -A/ D (hardware) upgrade where a number of sampled data streams are made available However, for practical ... nonadaptive single A/ D-basedFFT solution, as well as potential multichannel upgrades, we would like to establish a theoretical space-time clutter covariance matrix for...

Ngày tải lên: 21/06/2014, 08:20

... Jr., and S M Nettles, “A joint MIMO-OFDM transceiver and MAC design for mobile ad hoc networking,” in International Workshop on Wireless Ad- Hoc Networks (IWWAN ’04), pp 315–319, Oulu, Finland, ... estimation and detection for scalable, adaptive, and robust communications and propagation studies He has published numerous journal and conference articles in detect...

Ngày tải lên: 22/06/2014, 22:20

... ITERATIVE RECEIVER DESIGN FOR BROADBAND WIRELESS COMMUNICATION SYSTEMS VIA EXPECTATION MAXIMIZATION (EM) BASED ALGORITHMS THE-HANH PHAM (B Eng., Hanoi ... recommendations for future works Chapter Overview of Expectation Maximization (EM), Expectation Conditional Maximization (ECM) and Space-Alternating Generalized EM (SAGE) Algorithms 2.1 Expectat...

Ngày tải lên: 12/09/2015, 08:19

... substrate in the coupled line area of the quadrature Magic- T A thinner substrate will result in a width of the coupled line in the magic- T being too thin to be fabricated; a thicker substrate ... between the two outputs The key component in part A is the novel Quadrature Magic- T The unique feature of this Quadrature Magic- T is its capability to perform v...

Ngày tải lên: 30/09/2015, 10:11

... recorded during phase A, thus phase to phase matching is included For equations and signal flow, see the MCP3909 3- Phase Energy Meter Reference Design using PIC18F2520 User’s Guide, (DS516 43) ©Fluke ... Thailand - Bangkok Tel: 66-2-694- 135 1 Fax: 66-2-694- 135 0 Italy - Milan Tel: 39 - 033 1-742611 Fax: 39 - 033 1-466781 Netherlands - Drunen Tel: 31 -416-69 03...

Ngày tải lên: 11/01/2016, 16:46

... Laszlo Kish Charles S Lessard Costas Georghiades May 2006 Major Subject: Electrical Engineering iii ABSTRACT A Low Power, High Dynamic Range, Broadband Variable Gain Amplifier for an Ultra Wideband ... A LOW POWER, HIGH DYNAMIC RANGE, BROADBAND VARIABLE GAIN AMPLIFIER FOR AN ULTRA WIDEBAND RECEIVER A Thesis by LIN CHEN Submitted to the O...

Ngày tải lên: 06/11/2012, 10:26

... Design for Amplify-and-Forward Multiple Antenna Relaying Systems by Chengwen Xing B.Eng., Xidian University, Xi’an, P R China A thesis submitted in partial fulfillment of the requirements for the ... thesis Transceiver designs for point-to-point MIMO or multi-user MIMO systems have been widely addressed previously However, for AF MIMO xi relaying system, due to the r...

Ngày tải lên: 20/11/2012, 11:31