论文信息 - On the use of dummy elements to match edge elements in transmit arrays

On the use of dummy elements to match edge elements in transmit arrays

Resistively loaded radiators, known as dummy elements, often are used to improve the active match of receive array edge elements. We discuss the use of dummy elements for transmit array operation and explain that, because these elements do not transmit their own signals, they cannot improve significantly the match of transmitting edge elements. We also discuss two second order effects involving dummy elements: (1) edge element match perturbation from imperfectly matched dummies and (2) perturbation of radiator self-match in an open radiator structure such as a connected array.

Eric Holzman

[1] M. Okada,et al. Effect of Dummy elements on a Monopole Array-assisted Doppler Spread Compensator for Digital Terrestrial Television Broadcasting Receiver , 2006, 2006 Asia-Pacific Conference on Communications.

[2] D. Pozar. The active element pattern , 1994 .

[3] M.J. Arts,et al. Design and Construction of an Array of Vertically Oriented Bow-Tie Antennas for a New Generation of Radio Telescopes , 1999, 1999 29th European Microwave Conference.

[4] David M. Pozar,et al. A relation between the active input impedance and the active element pattern of a phased array , 2003 .

[5] H. Steyskal,et al. On the size requirement for finite phased-array models , 2002 .

[6] D. Cavallo,et al. Connected phased array antennas for ultra-wide band radar applications , 2008, 2008 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems.