Re: omnidirectional antenna using 4 biquads

On Sun, 3 Feb 2008 11:50:53 -0800 (PST), miso@xxxxxxxxx wrote in
<4845970a-e4f2-4524-97a7-1d1437fd79d3@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>:

On Feb 3, 12:24 am, John Navas <spamfilt...@xxxxxxxxxxxxxx> wrote:
On Sat, 2 Feb 2008 23:57:24 -0800 (PST), m...@xxxxxxxxx wrote in
<3ade6810-a747-4c41-938d-9740eeb77...@xxxxxxxxxxxxxxxxxxxxxxxxxx>:

On Feb 2, 11:15 pm, John Navas <spamfilt...@xxxxxxxxxxxxxx> wrote:
On Sat, 2 Feb 2008 22:26:54 -0800 (PST), m...@xxxxxxxxx wrote in
<bb019663-7b79-41c6-a2a5-65f69c959...@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>:

Dumb question perhaps, but here goes. If you arrange 4 biquads in a
rectangular formation and used a power combiner, would you get a
decent omnidirectional antenna? Looking at the biquad pattern
http://martybugs.net/wireless/biquad/images/biquad_azimuth.jpg
the antenna is good for about +-45 degrees. Seems to me you would get
an omnidirectional antenna without too squished of a donut. The
disadvantage is the combiner loss of 6db (ideal).

What would be the point?
Like I already stated, high gain without a squished donut, i.e.
compared to a colinear.

What makes you think it won't be a squished donut, albeit a crude one
(due to uneven horizontal gain pattern)? The coverage of a biquad is
more like 45° than 90°.

The vertical response should be that of the biquad itself.

Which will be pretty much a squished donut, albeit a crude one.

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Relevant Pages

  • Re: omnidirectional antenna using 4 biquads
    ... rectangular formation and used a power combiner, ... Looking at the biquad pattern ... an omnidirectional antenna without too squished of a donut. ...
    (alt.internet.wireless)
  • Re: omnidirectional antenna using 4 biquads
    ... rectangular formation and used a power combiner, ... Looking at the biquad pattern ... an omnidirectional antenna without too squished of a donut. ... John Navas FAQ for Wi-Fi: ...
    (alt.internet.wireless)
  • Re: omnidirectional antenna using 4 biquads
    ... rectangular formation and used a power combiner, ... get an omnidirectional antenna without too squished of a donut. ... John Navas FAQ for Wi-Fi: ... Like I already stated, high gain without a squished donut, i.e. ...
    (alt.internet.wireless)
  • Re: omnidirectional antenna using 4 biquads
    ... rectangular formation and used a power combiner, ... Looking at the biquad pattern ... an omnidirectional antenna without too squished of a donut. ... Yes, that is the right design, though I use loops instead of squares ...
    (alt.internet.wireless)
  • Re: omnidirectional antenna using 4 biquads
    ... rectangular formation and used a power combiner, ... Looking at the biquad pattern ... an omnidirectional antenna without too squished of a donut. ...
    (alt.internet.wireless)