Re: [AFMUG] OT: Waveguide polarization
This describes it fairly well http://www.thebdr.net/articles/ops/xmtr/RF-pol.pdf Sent from my iPad On Feb 18, 2015, at 10:30 PM, Adam Moffett dmmoff...@gmail.commailto:dmmoff...@gmail.com wrote: Please enlighten me Glad to see that for the most part this thread kept the discussion on polarization rather than polarity these sound similar but they are not synonymous. Sent from my iPad On Feb 18, 2015, at 6:13 PM, Chuck McCown ch...@wbmfg.commailto:ch...@wbmfg.com wrote: 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 Petermannmailto:d...@wyoming.com Sent: Wednesday, February 18, 2015 4:10 PM To: af@afmug.commailto: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.commailto: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 Petermannmailto:d...@wyoming.com Sent: Wednesday, February 18, 2015 3:35 PM To: af@afmug.commailto: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.commailto: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.commailto:daniel.wh...@saftehnika.com Skype: danieldwhite Social:�LinkedInhttp://www.linkedin.com/in/danielwhite84 � *** � From:�Af [mailto:af-boun...@afmug.com]�On Behalf Of�Josh Luthman Sent:�Wednesday, February 18, 2015 1:55 PM To:�af@afmug.commailto:af@afmug.com Subject:�Re: [AFMUG] OT: Waveguide polarization � On SAF CFIP Lumina it was opposite.� Like your first image. � Josh Luthman Office:�937-552-2340tel:937-552-2340 Direct:�937-552-2343tel:937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 � On Wed, Feb 18, 2015 at 3:54 PM, Dan Petermann d...@wyoming.commailto: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? � �
Re: [AFMUG] OT: Waveguide polarization
This is very nice, and playing with the java app means I can finally visualize circular polarization. On Thu, Feb 19, 2015 at 7:41 AM, Hardy, Tim tha...@comsearch.com wrote: This describes it fairly well http://www.thebdr.net/articles/ops/xmtr/RF-pol.pdf Sent from my iPad On Feb 18, 2015, at 10:30 PM, Adam Moffett dmmoff...@gmail.com wrote: Please enlighten me Glad to see that for the most part this thread kept the discussion on polarization rather than polarity these sound similar but they are not synonymous. Sent from my iPad On Feb 18, 2015, at 6:13 PM, Chuck McCown ch...@wbmfg.com wrote: 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 � *** � 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? � �
[AFMUG] OT: Waveguide polarization
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?
Re: [AFMUG] OT: Waveguide polarization
top -Original Message- From: Dan Petermann Sent: Wednesday, February 18, 2015 1:54 PM To: af@afmug.com Subject: [AFMUG] OT: Waveguide polarization 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?
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?
Re: [AFMUG] OT: Waveguide polarization
Your first drawing is correct. It's opposite of what you'd expect. Craig Quoting Dan Petermann d...@wyoming.com: 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?
Re: [AFMUG] OT: Waveguide polarization
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 mailto:daniel.wh...@saftehnika.com Skype: danieldwhite Social: LinkedIn http://www.linkedin.com/in/danielwhite84 *** 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 tel:937-552-2340 Direct: 937-552-2343 tel: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 mailto: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?
Re: [AFMUG] OT: Waveguide polarization
That's what I said :P Josh Luthman Office: 937-552-2340 Direct: 937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Feb 18, 2015 5:19 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 http://www.linkedin.com/in/danielwhite84 *** *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?
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 *** 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?
Re: [AFMUG] OT: Waveguide polarization
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 *** 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?
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 *** 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?
Re: [AFMUG] OT: Waveguide polarization
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 *** 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?
Re: [AFMUG] OT: Waveguide polarization
Glad to see that for the most part this thread kept the discussion on polarization rather than polarity these sound similar but they are not synonymous. Sent from my iPad On Feb 18, 2015, at 6:13 PM, Chuck McCown ch...@wbmfg.commailto:ch...@wbmfg.com wrote: 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 Petermannmailto:d...@wyoming.com Sent: Wednesday, February 18, 2015 4:10 PM To: af@afmug.commailto: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.commailto: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 Petermannmailto:d...@wyoming.com Sent: Wednesday, February 18, 2015 3:35 PM To: af@afmug.commailto: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.commailto: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.commailto:daniel.wh...@saftehnika.com Skype: danieldwhite Social: LinkedInhttp://www.linkedin.com/in/danielwhite84 *** From: Af [mailto:af-boun...@afmug.com] On Behalf Of Josh Luthman Sent: Wednesday, February 18, 2015 1:55 PM To: af@afmug.commailto:af@afmug.com Subject: Re: [AFMUG] OT: Waveguide polarization On SAF CFIP Lumina it was opposite. Like your first image. Josh Luthman Office: 937-552-2340tel:937-552-2340 Direct: 937-552-2343tel:937-552-2343 1100 Wayne St Suite 1337 Troy, OH 45373 On Wed, Feb 18, 2015 at 3:54 PM, Dan Petermann d...@wyoming.commailto: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?
Re: [AFMUG] OT: Waveguide polarization
Please enlighten me Glad to see that for the most part this thread kept the discussion on polarization rather than polarity these sound similar but they are not synonymous. Sent from my iPad On Feb 18, 2015, at 6:13 PM, Chuck McCown ch...@wbmfg.com mailto:ch...@wbmfg.com wrote: 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 mailto:d...@wyoming.com *Sent:* Wednesday, February 18, 2015 4:10 PM *To:* af@afmug.com mailto: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 mailto: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 mailto:d...@wyoming.com *Sent:* Wednesday, February 18, 2015 3:35 PM *To:* af@afmug.com mailto: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 mailto: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 mailto:daniel.wh...@saftehnika.com Skype: danieldwhite Social:LinkedIn http://www.linkedin.com/in/danielwhite84 __ *** *From:*Af [mailto:af-boun...@afmug.com]*On Behalf Of*Josh Luthman *Sent:*Wednesday, February 18, 2015 1:55 PM *To:*af@afmug.com mailto: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 tel:937-552-2340 Direct:937-552-2343 tel: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 mailto: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?
