Ferroelectrically tuneable delay lines
Paper in proceedings, 2004

Ferroelectric (Ba/sub 0.25/Sr/sub 0.75/TiO/sub 3/) varactors are integrated on a Si substrate to form compact wideband true-time tuneable delay lines. The delay-line design is of the lumped element approach, implemented as a synthetic coplanar strip (CPS) line. The physical size of the delay lines is 2.0*0.33 mm/sup 2/. Up to 20 GHz, the measured delay time per unit length is approximately constant equal to 40 ps/mm (corresponding to a slow wave factor of 12) and the losses are about 0.049 dB/ps. The tuneability under 30 V DC-bias is 10%

circuit tuning

barium compounds

strip lines

ferroelectric capacitors

varactors

strontium compounds

delay lines

Author

Dan Kuylenstierna

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Andrei Vorobiev

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Peter Linner

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Spartak Gevorgian

Chalmers, Microtechnology and Nanoscience (MC2), Microwave Electronics

Conference Proceedings. 34th European Microwave Conference, 12-14 Oct. 2004

Vol. vol.1 157-60

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering

More information

Created

10/6/2017