SU1580466A1 - Resonator - Google Patents

Abstract

The invention relates to radio engineering. The purpose of the invention is the simultaneous suppression of the second and third harmonics at the point where the magnetic loop is connected. In the resonator in section 1, oscillations with a circular frequency Ω 0 are excited with a wave T loaded at one end by a capacitor 2. Magnetic loop 3 is used to communicate with the load. To suppress the second and third harmonics of the main oscillation with frequency Ω 0 and significantly reduce the requirements for the external filter installed in the load, parallel to the capacitor 2 is introduced an open loop 4. At the same time, the length I @ of loop 4, its characteristic impedance W sh and distance I 0 to the center of the loop 3 are chosen so that The magnetic flux along the length of loop 3 would vanish for the second and third harmonics, and the flux from the frequency oscillations * 000 would be large enough. For this, I sh and I 0 should be in the ratio I 0 / 3∬ * 98sh∬ 0 or I 0 * 98, I * 98sh * 9831 0. THIS IS THE CORRESPONDENCE OF CONFIRMATION W and W W, respectively, of segment 1 and loop 4, as well as the conductivity of capacitor 2 is determined by given f-lam. 1 il.

Description

This invention relates to VHF and microwave radio technology.

The purpose of the invention is the simultaneous suppression of the second and third harmonics at the point where the magnetic loop is connected.

The drawing shows the resonator.

The resonator consists of segment 1 line with wave T, loaded at one end by capacitor 2 and connected to external load through magnetic loop 3. Parallel to capacitor 2, an open loop 4 is connected in the form of a line segment with wave T.

The resonator works as follows.

In a segment of line 1 with a wave T loaded at one end by a capacitor 2, oscillations with a circular frequency (jjg) are excited. Magnetic loop 3 is used for connection with the load. To suppress the second and third harmonics of the main oscillation at the connection point of the magnetic loop 3 circular frequency So. and significantly reduce the requirements for the external filter installed in the load, parallel to the capacitor 2 an open loop 4 is introduced. In this case, the length 1Sh, the open loop 4, its characteristic impedance Mn and the distance 10 to the center of the magnetic The arms are chosen such that the magnetic flux averaged over the length of the magnetic loop turns to zero for the second and third harmonics and the flow from the oscillations of the fundamental frequency is large enough. For this, length 1, open loop 4 and distance 10 from its connection to the center magnetic loop 3 should be in proportion

1 „/ 3 1М 1Д OR 1 g, С 1ш. Ј. 31c. ,

and the ratio p of the wave resistances W, Wto of the line segment with the wave T and the open loop signal 4, respectively, and the conductivity Lc of the capacitor are determined from the following formulas:

W (2ЈlL) (3gle.l.

P

W ,,

1.5 tgUplJ - tg (3 / ilttl)

Wc

- 5 ptg (2 / 5luf) + tg (2pld) J

 - 3 PtgOpl ,,) + tg (3pld) J,

where p is a constant distribution

T waves;

L9 - circular resonant frequency; С - capacitor capacitance.

Claims (1)

Invention Formula A resonator containing a line segment with a wave T, loaded on one a capacitor and connected to an external load through a magnetic loop, characterized in that, in order to simultaneously suppress the second and third harmonics in where the magnetic loop is connected, an open loop in the form of a line segment with a wave T is inserted, connected in parallel to the capacitor, and the length of the 1Sh open loop and the distance 19 from its connection to the center of the magnetic loop is in the ratio , or 1v 1Sh 310 and the ratio p of the wave resistances W, W of the line segment with the wave T and the open loop, respectively, and the conductivity b of the capacitor are determined from the relations R -: W Ish (2glЈ) (3fil5). 1.5 tgUfllJ - tg (3 / Jlu) 40 bc uctw -. (2 / 3lw) + tg 2 / 5le) - lOtgO,) + tg () J, where l is a constant distribution T waves; SWV is circular resonant frequency. C. - capacitor capacitance.