Double Ridge Waveguide

Introduction

Like all waveguides, double ridge waveguide carries electromagnetic radiation in the form of transverse waves. The basic mode of most waveguides used in interconnection and RF equipment is transverse electric wave (TE) mode, and there is no electric field in the propagation direction. This means that the electric field points from one sidewall to the other, or is perpendicular to the waveguide. Under the action of electric field, the wave propagation can be adjusted by changing the distance between the side walls, so that it has different characteristics from the typical waveguide with flat walls on both sides.

Principle

Adding an internal ridge to the waveguide will change the electric field in the waveguide because the wall of the waveguide is grounded. Therefore, adding an internal ridge moves the ground plane and limits the distance that the electric field must travel in the waveguide. Compared with the waveguide without a ridge, it also increases the capacitance between walls. Like single ridged waveguides, double ridged waveguides use this concept to further "shrink" the electric field in the waveguide.

As a result, the impedance is reduced and the low frequency cutoff of the waveguide is also reduced. This basically allows smaller sized waveguides to adapt to lower frequencies compared to the case where there is no ridge in the waveguide.

Feature

In some cases, double ridge waveguide is used instead of stripline or microstrip line. The stripline or microstrip line may not have necessary power processing capacity, and typical rectangular waveguide may not have enough bandwidth. The use of ridge waveguide instead of conventional rectangular waveguide means the relative reduction of power processing and the increase of loss. Due to the addition of conductive materials in the whole structure, the double-ridged waveguide is often slightly heavier than the standard waveguide.

Key Benefits

• Lower cut-off frequency compared to non ridged waveguides of similar size.

• Expanding high-order mode frequencies may be beneficial to waveguide filter design.

• Replace planar transmission lines when enhanced power handling is required in compact spaces.

• Wider bandwidth than rectangular waveguides allows a wide range of "transmission lines" to be used as in use cases.

• Another advantage of double-ridged waveguides over non ridged waveguides or even single ridged waveguides is the ability to place switching elements within the gap of the ridge, making it easier to create switches. Double ridge waveguide has smaller gap areas between the electric field ground planes, which makes them easier to bridge with smaller, more reliable and faster actuators. In some cases, micro electro mechanical (MEMS) switch technology can even be used to create relatively compact and fast waveguide switches.

Application field

Double ridged waveguide components need to be used in applications such as electronic station, electronic countermeasure, microwave radio, VSAT, radar, instrument testing and research, because their operating frequencies are wider than standard waveguide components.

Certificate

We implement TQM (Total Quality System) and SOP (Standard Operation Procedure) with ISO 9001:2017 certification, which assures a strong commitment to quality standards and customer satisfaction.

Shipping

We will send the goods to you by DHL, FEDEX, UPS, EMS, AIR, etc. Usually 7-15 working days after receiving your 100% payment. For bulk orders: 15-35 working days after receiving the deposit.

Packaging

To better ensure the safety of your goods, professional, environmentally friendly, convenient, and efficient packaging services will be provided. After receiving the goods, if you have any dissatisfaction or other issues, please contact us ASAP, and we will give you a fast response and reasonable solution.

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