433MHz monopole antenna design for Cavity excitation COMSOL

[ahsoopk]

Hi all

I need to excite an existing cavity with a monopole antenna at 433MHz, feed point will be Din 7/16 coaxial connector but I am completely new to this technology so need some help. I am using COMSOL for simulations. Cavity dimensions cover the free space wavelength of the 433MHz, just for your information.

This antenna will be feed through a WR340 waveguide opening. I need to design it such a way that it can handle 1kW with better than 10dB return loss at the coaxial connector.

Kind regards,

Malik

 

[vfone]

The frequency band of WR340 waveguide is from 2.20 GHz to 3.30 GHz and you cannot use at 433 MHz.

https://www.pasternack.com/wr-340-waveguides-category.aspx

 

[ahsoopk]

The frequency band of WR340 waveguide is from 2.20 GHz to 3.30 GHz and you cannot use at 433 MHz.

https://www.pasternack.com/wr-340-waveguides-category.aspx

Thank you so much for your reply.

I am not exciting cavity by using WR340 waveguide at 433MHz but feeding an antenna through that port that should be compatible with 433MHz. But need to help to design such an antenna.

regards,

 

[D.A.(Tony)Stewart]

Why do you need to use a Rectangular Waveguide if it serves no purpose at 433 MHz?

 

[ahsoopk]

Why do you need to use a Rectangular Waveguide if it serves no purpose at 433 MHz?

Sorry for replying so late.

I am working again on this problem so thought update you.

Problem is my client has an existing cavity which as WR340 opening to mount WR340 waveguides, now they want to excite this cavity with 433MHz using antenna that should be fed into these holes which have rectangular dimensions of WR340.

I hope it makes sense.

kind regards,

Malik