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Ceramic dielectric antenna

Pbulish：admin　　time：2015年04Month21Day

Ceramic dielectric antenna can be used not only in GPS global positioning system, but also in communication between modern Internet of Things devices. The company in line with the achievement of customers, achievements of their own business philosophy, to provide customers with professional, targeted product design (customers to provide product requirements).

According to the different needs of customers, the company can provide different shapes of antenna, generally for the plate dielectric antenna and rod dielectric antenna.

Product description

The company has now successfully developed multiple media antennas.

K25, K35, K37, K40, K45

It has different dielectric constant and working frequency, and is widely used in:

GPS ceramic antenna;

Beidou satellite antenna;

Timing antenna;

10X10mm to 100X100mm can be used for the size of ceramic antenna;

Custom-made ceramic antenna products.

The company's existing products are applicable to the range of working frequency range from 30MHz to 10GHz. If the company needs the company to develop the corresponding low frequency and higher frequency products according to the requirements of the customer.

Product information
Huifeng electronics has now set up two kinds of dielectric antenna products:

產品A：尺寸：25mm*25mm 介電常數：20 工作頻率：1.57542GHz	產品B：尺寸：20mm*20mm 介電常數：37或40 工作頻率：1.57542GHz
產品C：尺寸：18mm*18mm 介電常數：37或40 工作頻率：1.57542GHz

The existing products use the same size of the vibrator, its size: 1.4mm*7.0mm, the product surface coating with silver layer, according to the different working frequency demand, can adjust the size of the silver layer coverage to achieve different working frequencies.

Product performance

	K25	K35	K37	K40	K45
介電常數	25	35	37	40	45
Qf【GHz】	120000	80000	64000	40000	44000
Q （測試頻率）	20000 (6G)	20000 (4G)	16000 (4G)	13000 (4G)	11000 (4G)
密度(g/cm3)	4.0	6.5	5.2	-	4.6
顏色	白色	黑色	淺綠	棕色	棕色

Typical GPS antenna performance (based on on 1.2 x 1.2 inch [30 x 30 mm] FR-4 ground plane

科目	典型性能	單位
中間頻率	1575.42	MHz
極化方式	右旋園極化
RHCP 增益 @ Zenith	-1.5	dBic
RHCP 增益 @ 10o Elevation	-1.5	dBic
軸比@ Zenith	3	dB
駐波比VSWR	1.6 Max
阻抗	50	Ω
天線尺寸	20X20X4	mm

規格	尺寸	頻率	阻抗	材料
HF1575D25AS	25254	1575.42MHz	50	K25
HF1575D25BS	25252	1575.42MHz	50	K25
HF1575D25AD	25254	1575.42MHz	50	K25
HF1575D20AS	20204	1575.42MHz	50	K40
HF1575D18AS	18184	1575.42MHz	50	K40
HF1575D20BS	20202	1575.42MHz	50	K40
HF1575D18BS	18182	1575.42MHz	50	K40

Application of dielectric antenna

With the development of new technology, miniaturized dielectric antennas are increasingly used in new products, such as:

Satellite navigation;

RDIF logistics field;

Wireless communication router;

Mobile phone built-in antenna;

Communication base station;

Dielectric resonator antenna;

Radar;

Satellite TV set-top box;

The Internet of things equipment has a built-in communication antenna ect.

The company has a certain accumulation of technology in various fields of dielectric antenna, can provide customers with different requirements of professional dielectric antenna design.

Application characteristics of dielectric antenna

Microwave dielectric ceramics (MWDC) have the characteristics of high dielectric constant, low dielectric loss, high quality factor and small resonant frequency temperature coefficient. After applying the dielectric resonator antenna, the dielectric constant of dielectric resonator has a wide selection range (6~140), allowing the designer to control the scale and bandwidth flexibly, the radiation efficiency is more than 95%, and the shape is more than 95%. The antenna design has greater flexibility, more feeding mode, simpler processing and lower cost, and is convenient for integrated design.

Technical index of dielectric antenna

The dielectric constant is 6.1 + 0.2, 10 + 0.2, 14 + 0.2, 26 + 0.2, 35 + 0.2;

Loss angle tangent: < 3 x 10-4;

The frequency temperature coefficient: < < f > < < 10ppm/ >;

Bending strength: more than 100MPa;

Resistivity: > 1012 Omega cm;

The thermal conductivity is greater than or equal to 3W/m. K, which meets the high power requirements of microwave devices.

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產品規格	HF1575D25AS
產品編號	DA0001；DA0002；DA0003 ect.
外形尺寸(mm)	25254
饋孔偏置方式	中心偏下
中心頻率(MHz)	1575.42MHz
V.S.W.R	1.5
帶寬(MHz)	15
增益(dB)	5
特性阻抗(Ω)	50
極化方式	RHCP
頻率溫度係數(ppm/℃)	10
用途	GPS

產品規格	HF1575D25BS
產品編號	DA0010
外形尺寸(mm)	25252
饋孔偏置方式	中心偏下
中心頻率(MHz)	1575.42MHz
V.S.W.R	1.5
帶寬(MHz)	15
增益(dB)	5
特性阻抗(Ω)	50
極化方式	RHCP
頻率溫度係數(ppm/℃)	10
用途	GPS

產品規格	HF1575D25AD
產品編號	DA0004
外形尺寸(mm)	25254
饋孔偏置方式	左下角偏孔
中心頻率(MHz)	1575.42MHz
V.S.W.R	1.5
帶寬(MHz)	15
增益(dB)	5
特性阻抗(Ω)	50
極化方式	RHCP
頻率溫度係數(ppm/℃)	10
用途	GPS

產品規格	HF1575D20AS
產品編號	DA0006
外形尺寸(mm)	20204
饋孔偏置方式	左下角偏孔
中心頻率(MHz)	1575.42MHz
V.S.W.R	1.5
帶寬(MHz)	15
增益(dB)	5
特性阻抗(Ω)	50
極化方式	RHCP
頻率溫度係數(ppm/℃)	10
用途	GPS

產品規格	HF1575D18AS
產品編號	DA0007
外形尺寸(mm)	18184
饋孔偏置方式	左下角偏孔
中心頻率(MHz)	1575.42MHz
V.S.W.R	1.5
帶寬(MHz)	15
增益(dB)	5
特性阻抗(Ω)	50
極化方式	RHCP
頻率溫度係數(ppm/℃)	10
用途	GPS