Title :
Electronically tunable reflectarray element based on C-patch coupled to delay line
Author :
Binh Duong Nguyen ; Kien Trung Pham ; Van-Su Tran ; Linh Mai ; Yonemoto, Naruto ; Kohmura, Akiko ; Futatsumori, Shunichi
Author_Institution :
Int. Univ. - Vietnam Nat. Univ., Ho Chi Minh City, Vietnam
Abstract :
A reflectarray element with switchable phase shift for an electronically beam scanning reflectarray operating in the X-band is presented. The element consists of multilayer printed circuits with a C-patch coupled to a delay line through a ring slot. The phase shift is obtained by adjusting the length of the delay line. The element integrated with a pin diode to control the phase is assembled and measured in the X-band. The experimental validations show a wide range of reflection phase with a quasi-linear phase curve as well as a promising capability of changing the reflected phase between the ON and OFF states of the PIN diode.
Keywords :
microstrip antenna arrays; p-i-n diodes; reflectarray antennas; C-patch coupled; PIN diode; X-band; electronically beam scanning reflectarray; electronically tunable reflectarray element; multilayer printed circuits; quasilinear phase curve; switchable phase shift;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2014.1345