access icon free Electronically tunable reflectarray element based on C-patch coupled to delay line

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.

Inspec keywords: reflectarray antennas; microstrip antenna arrays; p-i-n diodes

Other keywords: C-patch coupled; electronically tunable reflectarray element; X-band; multilayer printed circuits; electronically beam scanning reflectarray; quasilinear phase curve; PIN diode; switchable phase shift

Subjects: Junction and barrier diodes; Antenna arrays

References

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      • 8. Pham, K.T., Nguyen, B.D., Tran, V.S., Bui, L.P., Mai, L., Nguyen, N.T., Yonemotoy, N., Kohmuray, A., Futatsumori, S.: ‘Electrically tunable reflectarray element based on aperture-coupled C-patch’. European Conf. on Antennas and Propagation (EuCap), The Hague, The Netherlands, April 2014, pp. 23042307.
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http://iet.metastore.ingenta.com/content/journals/10.1049/el.2014.1345
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