Technically that is impossible to answer due to the infinite number of
waveguide modes.
However, the practical answer is that we always use a very simple mode. And in
that mode, the probe always comes out of the broad wall, about a quarter
wavelength from the end of a dead ended waveguide. And that probe is the
polarization.
You have to match the openings. The internal dimensions of the waveguide and
the hole in the radio must line up. In the event the mechanical orientations
are at right angles, you have to use a section of flexible waveguide to make
the twist.
From: Dan Petermann
Sent: Wednesday, February 18, 2015 4:10 PM
To: af@afmug.com
Subject: Re: [AFMUG] OT: Waveguide polarization
Hmm, now I am not so sure.
Is it the orientation of the waveguide that determines the polarity or the
orientation of the probe?
For example, waveguide exits the radio with wider dimension in a left/right
direction, and enters antenna in a up/down direction, did the polarization of
the signal rotate 90 degrees?
On Feb 18, 2015, at 3:56 PM, Chuck McCown <ch...@wbmfg.com> wrote:
If you ever need to question this again, it is opposite the major dimension.
If you could see the little probe /antenna that feeds the waveguide, you
would see it sticking up out of the broad wall.
The polarization of that little probe is the polarization of the waveguide.
And it is parallel to the short walls.
From: Dan Petermann
Sent: Wednesday, February 18, 2015 3:35 PM
To: af@afmug.com
Subject: Re: [AFMUG] OT: Waveguide polarization
Great! Thanks to all who answered.
On Feb 18, 2015, at 3:19 PM, Daniel White <afmu...@gmail.com> wrote:
Josh I hate to disagree with you here… but a waveguide is a waveguide.
Maybe your link is in the wrong polarization :-)
Top is correct.
***************************************************************************
Daniel White - Managing Director
SAF North America LLC
Cell: +1 (303) 746-3590
daniel.wh...@saftehnika.com
Skype: danieldwhite
Social: LinkedIn
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From: Af [mailto:af-boun...@afmug.com] On Behalf Of Josh Luthman
Sent: Wednesday, February 18, 2015 1:55 PM
To: af@afmug.com
Subject: Re: [AFMUG] OT: Waveguide polarization
On SAF CFIP Lumina it was opposite. Like your first image.
Josh Luthman
Office: 937-552-2340
Direct: 937-552-2343
1100 Wayne St
Suite 1337
Troy, OH 45373
On Wed, Feb 18, 2015 at 3:54 PM, Dan Petermann <d...@wyoming.com> wrote:
If you have a waveguide connection to an antenna, what direction (up/down
or left/right) does the wider portion of the waveguide go?
___
| |
| | = H Pol?
| |
or
_______
| | = H Pol?
