Compact receiving antenna of portable high-frequency sea-detecting radar

• Main Authors: SHI ZHENHUA, WU SHICAI, ZHOU HAO, WEN BIYANG
• Format: Patent
• Language: Chinese; English
• Published: 17.02.2010
• Subjects: ANTENNAS, i.e. RADIO AERIALS; BASIC ELECTRIC ELEMENTS; ELECTRICITY

A compact receiving antenna of a portable high-frequency sea-detecting radar consists of a vertical monopole and two orthogonal active ferrite loop antenna in the horizontal plane, wherein a loop antenna amplifier is a bandpass amplifier; the bandpass amplifier is similar to a push-pull amplification circuit and takes a mixer HJ and a chip IC as the core, wherein the mixer HJ has 50ohm of input impedance; and the chip IC has broad-band low noise and high gain; three antenna units are mutually orthogonal and have a common phase center; the output of the antenna unit is synthesized to a heart-shaped wave beam by the specific signal processing in a radar receiving machine, thus conveniently realizing radar detection and orientation scanning; the antenna has compact or lighter structure; the antenna and an antenna branch post are integrated into a whole practically; and the basic performance of the antenna is ensured, simultaneously, the cost of the antenna is reduced, and the anti-wind capability of the antenna