An ultra-wideband electromagnetic source includes a voltage source and a pulser assembly electrically coupled to the voltage source. The pulser assembly includes a bipolar vector inversion generator (VIG) assembly, a peaking gap assembly coupled to the VIG assembly, and an oil lens assembly coupled to the peaking gap assembly. The ultra-wideband electromagnetic source also includes a balanced antenna assembly including one or more sets of antenna arms coupled to the oil lens assembly and an antenna reflector coupled to the one or more sets of antenna arms.

An out-of-band coupled antenna combined by fine-and-straight antenna and bow-tie antenna is provided, including: a dielectric slab (1), an AA radiation element (2) provided on an upper plate (1A) of the dielectric slab (1) by a , a cooper pouring process, a BA radiation element (3), an A feeder line (4) and a B feeder line (5); an AB radiation element (8) provided on a lower plate (1B) of the dielectric slab (1), a BB radiation element (9), a C feeder line feeder (6) and a D feeder line (7); a first sensor (10A) and a second sensor (10B) which are connected on the AA radiation element (2); a third sensor (10C) and a fourth sensor (10D) which are connected on the AB radiation element (8). The antenna is capable of suppressing out-of-band coupling between indication elements to improve the separation degree.

A base block of a flare antenna may be made by: forming a ground plane on a base insulating layer; forming an intermediate insulating layer over the ground plane; patterning radiating and shorting traces on the intermediate insulating layer; forming a top insulating layer over the radiating and shorting traces; forming a top metallization layer; connecting the top metallization layer to the ground plane with vias passing through the intermediate insulating layer; and forming a via that contacts the radiating trace and passes through the ground plane and is not in electrical contact with the top metallization layer or the ground plane.

An out-of-band coupled antenna combined by fine-and-straight antenna and bow-tie antenna is provided, including: a dielectric slab (1), an AA radiation element (2) provided on an upper plate (1A) of the dielectric slab (1) by a, a cooper pouring process, a BA radiation element (3), an A feeder line (4) and a B feeder line (5); an AB radiation element (8) provided on a lower plate (1B) of the dielectric slab (1), a BB radiation element (9), a C feeder line feeder (6) and a D feeder line (7); a first sensor (10A) and a second sensor (10B) which are connected on the AA radiation element (2); a third sensor (10C) and a fourth sensor (10D) which are connected on the AB radiation element (8). The antenna is capable of suppressing out-of-band coupling between indication elements to improve the separation degree.

Various methods, apparatus, devices and systems are provided for electrically short antennas for efficient broadband transmission. In one example, among others, a system includes a segmentally time-variant antenna and a segment controller that can control conductivity of individual segments of the segmentally time-variant antenna. The conductivity of the individual segments is modulated to allow a pulse to propagate from the proximal end to the distal end of the segmentally time-variant antenna and impede a reflection of the pulse from propagating back to the proximal end of the segmentally time-variant antenna. In another embodiment, a method includes injecting a pulse at a first end of a segmentally time-variant antenna and modulating conductivity of individual segments to allow the pulse to propagate to a second end of the segmentally time-variant antenna and impede a reflection of the pulse from propagating back to the first end.

A base block of a flare antenna may be made by: forming a ground plane on a base insulating layer; forming an intermediate insulating layer over the ground plane; patterning radiating and shorting traces on the intermediate insulating layer; forming a top insulating layer over the radiating and shorting traces; forming a top metallization layer; connecting the top metallization layer to the ground plane with vias passing through the intermediate insulating layer; and forming a via that contacts the radiating trace and passes through the ground plane and is not in electrical contact with the top metallization layer or the ground plane.

Various methods, apparatus, devices and systems are provided for electrically short antennas for efficient broadband transmission. In one example, among others, a system includes a segmentally time-variant antenna and a segment controller that can control conductivity of individual segments of the segmentally time-variant antenna. The conductivity of the individual segments is modulated to allow a pulse to propagate from the proximal end to the distal end of the segmentally time-variant antenna and impede a reflection of the pulse from propagating back to the proximal end of the segmentally time-variant antenna. In another embodiment, a method includes injecting a pulse at a first end of a segmentally time-variant antenna and modulating conductivity of individual segments to allow the pulse to propagate to a second end of the segmentally time-variant antenna and impede a reflection of the pulse from propagating back to the first end.

The disclosed antenna structures and electronic microsystems are capable of physically disappearing in a controlled, triggerable manner. Some variations provide an on-chip transient antenna comprising a semiconductor substrate containing ion-implanted hydrogen atoms and a conductor network comprising metals bridged by low-melting-temperature metals. Some variations provide an off-chip transient antenna comprising a flexible substrate containing a polymer, nanoporous silicon particles, and an oxidant for silicon, and a conductor network comprising metals bridged by low-melting-temperature metals. Other variations provide a method of introducing physical transience to a semiconductor integrated circuit, comprising thinning a substrate from the back side, implanting hydrogen ions into the thinned substrate to introduce latent structural flaws, depositing a semiconductor integrated circuit or sensor chip, and providing a controllable heating source capable of activating the latent structural flaws. These novel approaches are compatible with existing integrated circuits processing, preserve antenna performance, and use foundry-compatible techniques.

Ultra-Wideband (UWB) technology is a wireless technology supporting the transmission of large amounts of digital data over short distances using coded impulses over a wide frequency spectrum with very low power. Enhanced link performance and functionality of such UWB systems is presented exploiting multiple directive antennas for spatially filtering undesired signals and increasing signal strength whilst circuit complexity is reduced by eliminating baluns in prior art solutions. Further enhancements support payloads with flexible encoding schemes, improved channel utilization, reduced processing logic, improved robustness in correlation techniques, versatile synchronisation techniques, improved ranging, as well as providing for improved inter-symbol interference tolerance and detection.