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--- rfmeasurement:ringresonatormethod [2021/10/20 23:42] – [The Ring Resonator Design] neilhao
+++ rfmeasurement:ringresonatormethod [2023/02/11 17:30] (current) – external edit 127.0.0.1
@@ Line 36: / Line 36: @@
 |n=6	|Fo(6)=14.32129576 GHz|
+When Er = 9.8, the simulated resonate frequency points:
+{{ :rfmeasurement:ringresonatormethod_simulatedresults.png?nolink&350 |}}
 ===== Measurement =====
 {{ :rfmeasurement:ringresonatormethod_fixture.png?nolink&600 |}}
-Six peaks of S21 were measured within the frequency from 0Hz to 6GHz:
+Six peaks of S21 were measured within the frequency from 300KHz to 6GHz:
 {{ :rfmeasurement:ringresonatormethod_measuredresults.png?nolink&350 |}}
 Thus for Fn with n=1…6,
@@ Line 61: / Line 62: @@
 Finally, the effective dielectric constant and dielectric constant can be calculated by using above two equations:
 {{ :rfmeasurement:ringresonatormethod_finalresults.png?nolink |}}
-The average dielectric constant within the frequency from 1GHz to 6GHz is 9.42.
+We could conclude that this substrate has stable dielectric constant (Er) over wide frequency range. The average dielectric constant within the frequency from 1GHz to 6GHz is 9.42.
 ===== Reference =====
+[1] Neil Hao. The Considerations of Antenna Design for IOT and Wearable Devices. Retrieved Oct 21, 2021, from https://uniteng.com/index.php/2019/11/20/the-considerations-of-antenna-design-for-iot-and-wearable-devices/
+[2] Measuring the dielectric constant 𝜺𝒓 of Teflon, Polyester, FR4, G10, or FR4 with an RF generator and a good bolometer. Retrieved Oct 21, 2021, from https://www.e-doodles.it/wp-content/uploads/2019/05/Measuring-the-dielectric-constant-%CE%B5_r-of-Teflon-Polyester-FR4-G10-or-FR4-with-an-RF-generator-and-a-good-bolometer.pdf