ELECTROMAGNETIC ANECHOIC CHAMBER

摘要

An electromagnetic anechoic chamber includes a chamber, a test bench located in the chamber for supporting an electronic device, a horizontal high frequency antenna, a perpendicular high frequency antenna, a horizontal low frequency antenna, a perpendicular low frequency antenna, four directional filters, four relays, a mixer, and a receiver. The horizontal high frequency antenna, the perpendicular high frequency antenna, the horizontal low frequency antenna, and the perpendicular low frequency antenna are located around the platform, and electrically coupled to the directional filters. Each relay includes a first end connected to the mixer and a second end connected to the corresponding directional filter. The mixer is electrically coupled to the receiver. The mixer generates a composite signal. The composite signal is transmitted to the receiver. The receiver analyzes and displays whether the electronic device is qualified or not.

主权项

1. An electromagnetic anechoic chamber, comprising:
a chamber; a test bench located in the chamber for supporting an electronic device; a horizontal high frequency antenna; a perpendicular high frequency antenna; a horizontal low frequency antenna; a perpendicular low frequency antenna; four directional filters electrically coupled to the horizontal high frequency antenna, the perpendicular high frequency antenna, the horizontal low frequency antenna, and the perpendicular low frequency antenna; a receiver; a mixer coupled to the receiver; and four relays, each relay comprising a first end electrically coupled to the mixer, and a second end electrically coupled to a corresponding directional filter; wherein the horizontal high frequency antenna, the perpendicular high frequency antenna, the horizontal low frequency antenna, and the perpendicular low frequency antenna are located around the test bench, when the first ends of the relays are coupled to the second ends, the horizontal high frequency antenna, the perpendicular high frequency antenna, the horizontal low frequency antenna, and the perpendicular low frequency antenna receive electromagnetic signals, the electromagnetic signals are transmitted to the mixer by the direction filters, the mixer receives the electromagnetic signals, generates a composite signal, and transmits the composite signal to the receiver, the receiver analyzes and displays whether the electromagnetic signal is qualified or not.