Energy-load coupling T-shaped ring band-pass filter for S wave band

• Main Authors: OU JUNHUI, ANDREY.S.ANDRENKO, LI ZHONGWEI, TAN HONGZHOU
• Format: Patent
• Language: Chinese; English
• Published: 29.06.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRICITY; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE; WAVEGUIDES

The invention discloses an energy-load coupling T-shaped ring band-pass filter for an S wave band. The energy-load coupling T-shaped ring band-pass filter comprises an input-side impedance matching line, stepped impedance lines, annular coupling lines, an output-side impedance matching line, a T-shaped microstrip line and energy-load coupling microstrip lines, wherein the T-shaped structure of the filter is an annular T-shaped resonator structure; and the over-large size in a single direction is avoided, so that the filter can be miniaturized. Meanwhile, the T-shaped structure is added to an annular coupling corner, so that the stopband rejection capability of the filter is strengthened. The energy-load coupling structure is added on the basis of the annular T-shaped resonator structure; the signal transmission path of the filter is increased by a strong input-output coupling design; and the transmission zero point is increased, so that the stopband rejection capability of the filter is improved. 本发明公开一种S波段的能