Antenna for Quad-band GSM/GPRS module

Other Hardware General Electronics
1

I am going to use Quectel M66 GSM/GPRS module for transmitting GPS data to cloud. I have to make the PCB as small as possible. That's why i am looking for small size GSM antenna solution. Until now I have found 0830AT54A2200. However it requires 60x10 mm ground plane. My PCB dimensions are around 45mm. Another type that I have found Helical Antennas. But it also doesn't good reliable to me. I don't know what to use. Any help would be great.

2

I have no clue what reliable means to you.

But an antenna to be useful for "850/ 900/ 1800/ 1900MHz" will in all cases have to perform poorly to cover that range.

Paul

3

Its probably better to ask what performance criteria are expected other than PCB area? I would
suggest only purchasing any antenna system for which there is a proper datasheet complete with
return-loss and VSWR graphs...

4

Paul_KD7HB:
I have no clue what reliable means to you.

But an antenna to be useful for "850/ 900/ 1800/ 1900MHz" will in all cases have to perform poorly to cover that range.

Paul

There is no datasheet of this products and I couldn't find any similar antenna in DigiKey. That's why I have some doubts.

MarkT:
Its probably better to ask what performance criteria are expected other than PCB area? I would
suggest only purchasing any antenna system for which there is a proper datasheet complete with
return-loss and VSWR graphs...

According to datasheet of M66
VSWR: <2
Gain(dBi): 1(I don't know this one is average or peak gain?)
Max input power: 50W
Input Impedance: 50 ohm
Polarization Type: Vertical

5

caneradiyaman6:
I am going to use Quectel M66 GSM/GPRS module for transmitting GPS data to cloud.

Did you contact Quectel ?

6

srnet:
Did you contact Quectel ?

I did not because I could not see antennas among their products. But I will give a shot and ask them.

7

caneradiyaman6:
I did not because I could not see antennas among their products. But I will give a shot and ask them.

Its also worth reading their application notes and documentation on antenna design etc.

8

caneradiyaman6:
There is no datasheet of this products and I couldn't find any similar antenna in DigiKey. That's why I have some doubts. According to datasheet of M66
VSWR: <2

If thats across 4 bands that's fine

Gain(dBi): 1(I don't know this one is average or peak gain?)

peak gain relative to mythical isotropic antenna - ie poorer than a dipole, but that's not unusual for a
miniature antenna, you live with it, phones work...

Max input power: 50W

No problems there then!

Input Impedance: 50 ohm
Polarization Type: Vertical

9

MarkT:
If thats across 4 bands that's finepeak gain relative to mythical isotropic antenna - ie poorer than a dipole, but that's not unusual for a
miniature antenna, you live with it, phones work...No problems there then!

I couldn't find the antenna that I need. I just wrote the antenna specifications required in datasheet of M66.

10

caneradiyaman6:
There is no datasheet of this products and I couldn't find any similar antenna in DigiKey. That's why I have some doubts. According to datasheet of M66
VSWR: <2
Gain(dBi): 1(I don't know this one is average or peak gain?)
Max input power: 50W
Input Impedance: 50 ohm
Polarization Type: Vertical

That is equivalent to a 50 Ohm, 1 watt resistor with long leads.

Paul