Unswitched, ultra low power, long range radar system

Details Unswitched, ultra low power, long range radar system Unswitched, ultra low power, long range radar system

2009-03-05

2010-10-26

Tarcza, Thomas H (Department: 3662)

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

Determining distance

With frequency modulation

C342S118000, C342S120000, C342S175000

Reexamination Certificate

active

07821446

ABSTRACT:
An ultra low power, long range, robust radar system, for applications such as ionospheric sounding. The HF transmit signal and the received (reflected) signal are both unswitched and high frequency and share a path to a common loop antenna. The transmit signal originates at a local oscillator (LO), and is sufficiently low power to not saturate the receive signal path. A balun divides the local oscillator signal between the transmit path forward to the antenna and a mixer path, and also divides the received signal between the mixer path and the LO path. A mixer converts the mixed LO and received signal to baseband.

REFERENCES:
patent: 5337054 (1994-08-01), Ross et al.
patent: 2002/0154052 (2002-10-01), Fehrenbach et al.

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