- #1
fred3142
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I'm trying to work out what 3.d) is meant to be. I'm not entirely sure which part of the antenna it is referring to; I assume it's referring to width of the gap between the feed and the patch. If this is the case, I have no idea what width one would want to make it. I would've thought as small as possible to not perturb the antenna much.
As far as I can tell, the textbook we're using (Antenna Theory: Analysis And Design by Balanis) doesn't really talk about it, except for saying that it'll introduce some capacitance and perhaps shift the resonance by up to 1%.
Question The red numbers are the lecturer's answers. I'm not really sure how he got 13.36mm for 3.c). I believe the inset should be about 9mm based on:
[tex]R_{in} (y=y_0) = R_{in}(y=0) \cos^2\left(\frac{\pi}{L} y_0\right) \\
75=150 \cos^2\left(\frac{\pi}{40.1\text{m}} y_0\right) \\
y_{0} \approx 9\,\text{mm}[/tex]
I really have no idea about part 3.d) though.
Could someone please point me in the right direction?
Thanks.
As far as I can tell, the textbook we're using (Antenna Theory: Analysis And Design by Balanis) doesn't really talk about it, except for saying that it'll introduce some capacitance and perhaps shift the resonance by up to 1%.
Question The red numbers are the lecturer's answers. I'm not really sure how he got 13.36mm for 3.c). I believe the inset should be about 9mm based on:
[tex]R_{in} (y=y_0) = R_{in}(y=0) \cos^2\left(\frac{\pi}{L} y_0\right) \\
75=150 \cos^2\left(\frac{\pi}{40.1\text{m}} y_0\right) \\
y_{0} \approx 9\,\text{mm}[/tex]
I really have no idea about part 3.d) though.
Could someone please point me in the right direction?
Thanks.