Continue to Site

Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

logic of coupling between two types of antennas

Status
Not open for further replies.

yefj

Advanced Member level 4
Joined
Sep 12, 2019
Messages
1,175
Helped
1
Reputation
2
Reaction score
3
Trophy points
38
Activity points
7,063
Hello , in the attached article there is a contradiction i cant understand.
On one hand they say that on the high frequency patches we have 1.8 Lambda distance array.
What distance did they play width to suppress the grating lobes at 34?
Thanks.

1672243074852.png

1672242926308.png
 

Attachments

  • SharedApertureDualBandMicrostripArray.pdf
    471 KB · Views: 86

Hello, in the attached article they have a certain element shown bellow where its zeros is being planned to fit the grating lobes of the array factor.
What is the name of this anntena?
How do we plan the zero location of such antenna?
As shown bellow from the article they used pairs to plan the zeros,how exactly it could be?
Thanks.
1672261484765.png

1672258773662.png

1672258804275.png
 

Attachments

  • SharedApertureDualBandMicrostripArray.pdf
    471 KB · Views: 82
Last edited:

Hello ,In the attached article i got two types of antennas.
one on low frequency and the other in high frequency as shown bellow.
We have two types of antennas together ,one antenna(high frequency) radiates at horisontal polarization and the other(low frequency) with vertical polarization.
In the article they say that mutual coupling is contolled by orthogonal orientation.
I dont understand that ,why the difference in polarization cancelles the effect of low frequency antenna will ruin the S11 of the high frequency antenna?
Its a foreign object ,it will do coupling and create returns.
1672311284273.png

1672310919997.png
1672311231419.png
1672310942672.png
 

Attachments

  • SharedApertureDualBandMicrostripArray.pdf
    471 KB · Views: 93

Status
Not open for further replies.

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Back
Top