A multi-functional cloaking technology with enhanced transmission in the giga-Hz regime

Abstract

In the giga-Hz (GHz) regime, not only does an advanced electromagnetic platform need a stealth function to shield itself from radar detection, similar to the “invisible” cloak in the visible light regime, but also an enhanced transmission function to communicate with others. To satisfy the seemingly contradictory requirements, we here propose a multi-functional mode of plasma cloaking, invisible to radar detection but signal-enhanced in communication bands. Such a synergistic effect is achieved by combining a “detour” layer of cloaking and an enhancement layer of communication. Thus, with such a design we can successfully apply an ideal “cloak” to the low frequency detecting regime (in the P-band) and improve signal transmission capabilities in a higher frequency communication regime (in the L-band) at the same time. Furthermore, the tunability and limitations of the multi-functional system are discussed, and the principles of designing inner and outer plasma layers are acquired.

Influence factors and mechanism of backscattering characteristics of electromagnetic waves in a single layer plasma tube array

“…II, we obtained the backscattering attenuation A cloud map of the plasma tube array (PTA) for the metal plate with different parameters (Figs. [8][9][10]. The tube parameters include gas composition, pressure, and tube diameters (Table II).…”

“…1,2 The new active attenuation technology has outstanding advantages, such as being programmable 3,4 and having a wide operating frequency, [5][6][7] fast response speed, and adjustable operating frequency. 8,9 Owing to such attributes, it has become a crucial development direction of backscattering intelligent attenuation technology. 10,11 Existing plasma generation methods for backscattering attenuation include ultraviolet photoionization, 12 hollow cathode low pressure discharge, 13 coaxial glow discharge, 14 electric barrier discharge (DBD), 15,16 radio frequency discharge, [17][18][19] and low pressure mercury vapor discharge (fluorescent lamps or ultraviolet ARTICLE pubs.aip.org/aip/adv lamps).…”