Customized Antennas - ODM/OEM Combo Wimax WiFi GSM Antenna Manufacturer Provider

Why a Wireless Device Needs the RF Custom Antenna Design?

Antenna is a very important part of a wireless device. A poor antenna or an antenna without tuning will affect the overall performance of a wireless device. A typical example is that a customer tests an antenna alone and finds out that the antenna has a very good performance, so they decide to use this antenna for his project. However, after the antenna is put in their device, he finds out that the performance of the device is below his expectation. Why this situation happens? Because an antenna's efficiency can be easily affected by the dielectric coefficient and mechanism of the device. Besides, there are many EMI and RF signals nearby the antenna, so it will result in an RF antenna that could not perform as what it supposed to be in the wireless device.

Thus, a reliable antenna partner who can help you to design an antenna which perfectly matches your wireless device is very important.

ODM/OEM RF Antenna

Embedded Antenna Design

Issue

1. Poor GSM connection
2. Device is unable to pass the certification

Analysis

The antenna type that customer applied and position that they installed the antenna were inappropriate. Therefore, antenna's efficiency was poor and it resulted in the bad GSM connection. Besides, TRP test value is also very low so that it could not pass the AT&T certification.

Action Takes

1. Avoid the noise sources and suggest a better place to put the new antenna.
2. Customized the embedded antenna with suitable type and it will be more appropriate to fit in the limited space.
3. Debug and experiment in the 3D scanning chamber to ensure the test measurement passes the certification standard.
4. TRP/TIS chart after the antenna is fine tuned:

Test Data	2011/3/15
Trade Name	SANVA
Model Name	S10A
Test Mode Free Space &Talking Position
Communication System	GSM850			EGSM			DCS			PCS
Channel	128	190	251	975	62	124	512	700	885	512	661	810
Note
Ant. Port I nput Pw. (dBm)	33	33	33	33	33	33	30	30	30	30	30	30
Tot. Rad. Pw. (dBm)	27.85	25.73	25.51	25.67	28.61	26.55	24.64	24.4	25.27	27.69	27.62	28.34

Result

We help our customer to get the AT&T and Vodafone certification. Moreover, the customers save much expense for the lab pre-certification test.

	Antenna design project A
	Antenna design project B

ODM/OEM RF Antenna

Frequency

Applications

Combo Antenna

Repeater