# rectangular spiral antenna

Status
Not open for further replies.

#### emoz

##### Newbie level 3
reconfigurable antenna

Can someone please help me with designing a single-arm rectangular spiral antenna in HFSS?My thesis is about reconfigurable single-arm rectangular spiral antenna design with MEMS switches.But I don't know how the length of the spiral effects the frequency.

Thanks

#### nazanin

##### Full Member level 4
emoz said:
Can someone please help me with designing a single-arm rectangular spiral antenna in HFSS?My thesis is about reconfigurable single-arm rectangular spiral antenna design with MEMS switches.But I don't know how the length of the spiral effects the frequency.

Thanks
please you give information about operate frequency and another parameter from spiral rectangular patch antenna.
also you can use from software ie3d for simulate spiral rectangular antenna.
i can give result from spiral for your with software ie3d.

### emoz

points: 2

#### emoz

##### Newbie level 3
please you give information about operate frequency and another parameter from spiral rectangular patch antenna.
also you can use from software ie3d for simulate spiral rectangular antenna.
i can give result from spiral for your with software ie3d.[/quote]

The antenna must work at 900MHz, 1800MHz, 2.4 GHz and 3.5 GHz.I've done one without calculating.This one is operating at 1800 MHz.But I don't know where I must put the MEMS switches and change the operating frequency to which I wanted.

#### xiaoling1980

##### Newbie level 4
i am doing a reconfigurable antenna , but i also don't know how to put the switch,and don'n know how to simulate the antenna thinking about the switch

#### Azulykit

Spiral antennas are generally thought of as being very broadband. A wavelength or two around the circumference is usual if you have the space available.

HFSS is a good choice for modeling and I would be inclined to model the mems switch as a break in the spiral.

You might find Corzine and Mosko a useful reference for things spiral.

points: 2