FM radar system

An FM radar system comprising:

• a plurality of transceivers having one or more input and output terminals coupled through a plurality of switches to a single microwave generator of a single microwave detector successively, each of said plurality of switches and said microwave detector being coupled to a common timing control circuit for synchronous operation, and each of said transceivers comprising:
• a transmitting part comprising a first input terminal, and a planar array antenna for transmitting said FM signal;
• and
• a receiving part comprising a planar array antenna for receiving an FM signal of a similar frequency band as said transmitted FM signal, a second input terminal, a mixer for producing beat signals by mixing said FM signal and said received FM signal, and an output terminal for outputting said produced beat signal;
• wherein said transmitting part and said receiving part are disposed in mutually exclusive areas on a single dielectric plate.

A radar device disposed on a single dielectric plate, said radar device comprising:

• a frequency multiplier for multiplying a frequency of a signal to a raised frequency;
• a transmitting antenna for transmitting a signal produced by said frequency multiplier;
• a receiving antenna for receiving a return signal, said return signal having been originally transmitted from said transmitting antenna and reflected by an object;
• a mixer for producing beat signals by mixing said return signal with a local signal relating to said signal transmitted from said transmitting antenna;
• and
• a shield disposed between said transmitting antenna and said receiving antenna for eliminating interference between said transmitting antenna and said receiving antenna.

A radar device disposed on a single dielectric plate, said radar device comprising:

• a transmitting antenna for transmitting a signal of raised frequency;
• a receiving antenna for receiving a return signal, said return signal having been originally transmitted from said transmitting antenna and reflected by an object;
• a mixer for producing beat signals by mixing said return signal with a local signal related to said signal transmitted from said transmitting antenna;
• an amplifier for amplifying said beat signals produced by said mixer;
• and
• a shield disposed between said transmitting antenna and said receiving antenna for eliminating interference between said transmitting antenna and said receiving antenna.