banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Liquid crystal phase shifters at millimeter wave frequencies
Rent this article for


Image of FIG. 1.
FIG. 1.

(Color online) Cross section of the device structure. The polyimide layer is rubbed and causes the in-plane orientation of the liquid crystal molecules when there is no voltage.

Image of FIG. 2.
FIG. 2.

(Color online) Phase shift vs applied voltage for selected frequencies in the device filled with W-1825 mixture.

Image of FIG. 3.
FIG. 3.

(Color online) Group delay vs frequency for several bias voltages. The wiggles are caused by reflections at the end of the device.

Image of FIG. 4.
FIG. 4.

(Color online) Change in group delay vs bias voltage for several frequencies.

Image of FIG. 5.
FIG. 5.

(Color online) S 21 parameter as a function of frequency. The results show the difference in transmission for coplanar waveguides without and with a liquid crystal material for lines 3.2 and 6.6 mm long.

Image of FIG. 6.
FIG. 6.

(Color online) Phase shift as a function of voltage for different frequencies in a cell constructed with rubbed Cu instead of polyimide. The different lines represent measurements from 10 to 110 GHz in steps of 10 GHz.


Generic image for table
Table I.

Properties of mixture W-1825 at 20 °C.


Article metrics loading...


Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Liquid crystal phase shifters at millimeter wave frequencies