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Tapered airline directional coupler

A technology of directional coupler and straight line, applied in the direction of waveguide devices, electrical components, connections, etc., can solve the problems of wide frequency bandwidth and impractical realization of a large number of segments

Active Publication Date: 2017-08-18
R&D MICROWAVES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, while U.S. Patent No. 7,429,903 is indeed an improvement over the prior art, its teachings still have significant disadvantages
For example, although the frequency bandwidth of the design disclosed in U.S. Patent No. 7,429,903 is relatively wide compared to past designs, it still leads to limitations
More specifically, the stepped configuration taught in U.S. Patent No. 7,429,903 is frequency limited by the number of 1 / 4 wavelength segments or 'n segments' and is impractical to implement for a large number of segments

Method used

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  • Tapered airline directional coupler
  • Tapered airline directional coupler
  • Tapered airline directional coupler

Examples

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Embodiment Construction

[0022] first reference Figure 1 to Figure 3 , shows a directional coupler (10) according to an exemplary embodiment of the present invention. A directional coupler (10) includes a housing (12) having a cover (14) secured to the housing using a plurality of fasteners (16), such as screws, bolts, rivets, and the like. The directional coupler (10) also includes a main conductor (18) and a coupling conductor (20), also called a secondary conductor.

[0023] The main conductor (18) is arranged in a slot (22) inside the housing (12) and is supported in a spaced arrangement relative to the walls of the slot (22) by insulator supports which form the input port connector (24) and part of the output port connector (26). The input port connector (24) and output port connector (26) are electrically connected to the main conductor (18) and provide a path for main power flow through the directional coupler (10). The input port connector (24) and output port connector (26) may comprise c...

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Abstract

A tapered airline directional coupler includes a housing having a length with an input end and an output end, the housing having a slot formed therein extending between the input end and the output end. The coupler also includes a main conductor in electrical communication with an input port connector mounted on the housing at the input end thereof and with an output port connector mounted on the housing at the output end thereof, and a coupled conductor in electrical communication with and extending between a forward coupling port connector mounted on the housing adjacent to the input end thereof and a reverse coupling port connector mounted on the housing adjacent to the output end thereof. Each of the slot, the main conductor and the coupled conductor has a cross-sectional area that varies depending upon where the cross-section is taken along the length of the housing.

Description

[0001] field of invention [0002] The present invention relates generally to directional couplers, and more particularly to high power, low passive intermodulation (PIM), low loss, wide bandwidth directional couplers. [0003] Background of the invention [0004] The term "directional coupler" generally refers to a four-port or three-port internally terminated passive microwave device in which the main line conductor (also known as the "thru line") carries radio frequency (RF) power. The primary line conductor is in close proximity to the secondary conductor and the electromagnetic field generated by the RF signal is coupled to the secondary conductor. An RF current flowing forward through the main line will cause an RF current flowing in the opposite direction in the coupled conductor, and will appear in only one of the coupled ports (i.e., a signal current flowing from left to right on the main line will cause a reverse flow in the coupled conductor. The signal current flow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P5/18
CPCH01P5/183H01R9/05
Inventor M·E·安特科威亚克
Owner R&D MICROWAVES