Marked: "De Forest Coil / Antenna / Pat. 2-17-03 / 10-11-04 / 12-15-05 / 4-22-06 / Other Patents Pending". This antenna is a plug-in unit for use with De Forest D-17 and D-12 Radiophone receivers. A ...

Abstract: A microstrip circular patch antenna with frequency and polarization reconfigurability using liquid metal is presented. The antenna has a C-shaped slot cut at the center of the patch and ...

Abstract: Microfluidically frequency reconfigurable and polarization reconfigurable probe-fed patch antennas are presented in this paper. For the frequency reconfigurable antenna, a frequency tuning ...

Ensure you have the basic details of your satellite system, like which satellite you’re receiving or how the signal is distributed from the antenna to the TV. You can obtain this information from your ...

A DJ sits in Radio K's studio during her on-air shift at Rarig Center in Minneapolis. MPR News guest host Catharine Richert talks with two college students who help run their college radio station.

Imagine it is the year 1859. As you prepare to send a telegraph, an unexpected electric shock jolts you from the clacker. Outside, the night sky is ablaze with swirls of green and red from vivid ...