Bo Yngve Thidé (born 8 January 1948) is a Swedish physicist and professor emeritus at Uppsala University.
In 1981, Bo Thidé discovered electromagnetic emissions stimulated by powerful radio waves in the ionosphere during experiments in August 1981 at the EISCAT facility in Tromsø, Norway.
These stimulated electromagnetic emissions (SEE) exhibit a rich spectral structure, particularly near harmonics of the ionospheric electron gyro frequency.
In the mid-1980s, Thidé published a series of papers together with Bengt Lundborg on a highly accurate analytic approximation method to calculate the full three-dimensional wave pattern, spin angular momentum (polarization) and other properties of radio waves propagating in an inhomogeneous, magnetized, collisional plasma.
[8] Thidé has advocated Orbital angular momentum multiplexing for radio transmissions, opening up additional degrees of freedom.