Efficiently decreasing the bandwidth and increasing the radiated

Details Efficiently decreasing the bandwidth and increasing the radiated Efficiently decreasing the bandwidth and increasing the radiated

1994-07-18

1995-10-03

Tarcza, Thomas H.

Communications: directive radio wave systems and devices (e.g.,

Directive

Including a steerable array

42368, 42 82, 455103, H01Q 322

Patent

active

054555930

ABSTRACT:
An Ultra-Wideband (UWB) transmitter array consists of N individual transmitters coupled to a reference cw oscillator. Each of the N transmitters generates a waveform consisting of a number of cycles of a nominal carrier frequency of f.sub.0. The duration of the amplitude spectrum of the envelope of each signal is T. The transmitters are arranged in close proximity to form a multipole moment and are precisely synchronized to each other and delayed appropriately so that the resulting amplitude spectrum of the envelope of the transmitter array is due to a pulse duration of NT seconds. This reduces the overall signal bandwidth by a factor of N, at the same time increasing the radiated energy by a factor of N.

REFERENCES:
patent: 4138678 (1979-02-01), Kirner
patent: 4234940 (1980-11-01), Iinuma
patent: 4359779 (1982-11-01), Levine
patent: 4743906 (1988-05-01), Fullerton
patent: 5084706 (1992-01-01), Ross et al.
patent: 5239309 (1993-08-01), Tang et al.

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