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ISM 433MHz Flex Antenna

APPLICATION SPECIFICATION

REVISION:

ECR/ECN INFORMATION:

TITLE:

ISM 433MHz Flex Antenna

SHEET No.

EC No:

120458

1 of 13

DATE:

2017-08-10

DOCUMENT NUMBER:

CREATED / REVISED BY:

CHECKED BY:

APPROVED BY:

AS-2042870100

Benson Liu 2017/08/10

Chris Zhong 2017/08/10

Welson Tan 2017/08/10

TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).DOC

ISM 433MHZ FLEX ANTENNA

1.0 SCOPE

This specification describes the antenna application and surroundings for the ISM 433MHz Flex

Antenna. The information in this document is for reference and benchmark purposes only. The user

is responsible for verifying antenna RF performance based on user’s actual implementation.

All measurements are done of the antenna mounted on a PC/ABS material block of 2mm thickness

with VNA Agilent 5071C and OTA chamber. All measurements are done with the part no.

2042870100 with a cable length of 100mm.

Antenna illustrations in this document are generic representations. They are not intended to be

an image of any antenna listed in the scope.

2.0 PRODUCT DESCRIPTION

A. DEFINITIONS OF TERMS

The overall antenna size is 90mm*40mm (Figure 1).

FIGURE 1. DIMENSION OF ISM 433MHZ FLEX ANTENNA

FIGURE 2. CABLE LINE VIEW OF ISM 433MHZ FLEX ANTENNA

Summary of content (13 pages)

PAGE 1
APPLICATION SPECIFICATION ISM 433MHZ FLEX ANTENNA 1.0 SCOPE This specification describes the antenna application and surroundings for the ISM 433MHz Flex Antenna. The information in this document is for reference and benchmark purposes only. The user is responsible for verifying antenna RF performance based on user’s actual implementation. All measurements are done of the antenna mounted on a PC/ABS material block of 2mm thickness with VNA Agilent 5071C and OTA chamber.
PAGE 2
APPLICATION SPECIFICATION B. RF PERFORMANCE OF ANTENNA LOADED WITH PC/ABS MATERIAL BLOCK OF 2MM THICKNESS IN FREE SPACE FIGURE 2.1 ANTENNA LOADED WITH PC/ABS BLOCK OF 2MM THICKNESS Description Test Condition Requirements Frequency Range Measure antenna on recommended PCB through VNA E5071C 433MHz+/-3MHz Return Loss Measure antenna on recommended PCB through VNA E5071C < -10 dB Peak Gain (Max) Measure antenna on recommended PCB through OTA chamber 0.7dBi Avg.
PAGE 3
APPLICATION SPECIFICATION FIGURE 2.2 RETURN LOSS OF ANTENNA IN FREE SPACE FIGURE 2.3 EFFICIENCY OF ANTENNA IN FREE SPACE REVISION: A ECR/ECN INFORMATION: TITLE: EC No: 120458 SHEET No. ISM 433MHz Flex Antenna DATE: 2017-08-10 DOCUMENT NUMBER: AS-2042870100 CREATED / REVISED BY: CHECKED BY: Benson Liu 2017/08/10 Chris Zhong 2017/08/10 3 of 13 APPROVED BY: Welson Tan 2017/08/10 TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).
PAGE 4
APPLICATION SPECIFICATION 3.0 REFERENCE DOCUMENTS  Sales Drawing: SD-2042870100  Product Specification: PS-2042870100  Packaging Information – Refer to the Molex related packaging drawings. 4.0 RF PERFORMANCE AS A FUNCTION OF IMPLEMENTATION 4.1 ANTENNA RF PERFORMANCE AS A FUNCTION OF DIFFERENT DISTANCES WITH VERTICAL GROUND Four ground distances with vertical ground from the antenna have been evaluated, and these distances are shown in figure 4.1.
PAGE 5
APPLICATION SPECIFICATION Ground Area: 90mm*90mm; Location 1: Distance between antenna and ground is about 20mm; Location 2: Distance between antenna and ground is about 30mm; Location 3: Distance between antenna and ground is about 40mm; Location 4: Distance between antenna and ground is about 50mm. FIGURE 4.1.1 RETURN LOSS OF ANTENNA AT FOUR LOCATIONS WITH VERTICAL GROUND REVISION: A ECR/ECN INFORMATION: TITLE: EC No: 120458 SHEET No.
PAGE 6
APPLICATION SPECIFICATION FIGURE 4.1.2 EFFICIENCY OF ANTENNA AT FOUR LOCATIONS WITH VERTICAL GROUND REVISION: A ECR/ECN INFORMATION: TITLE: EC No: 120458 SHEET No. ISM 433MHz Flex Antenna DATE: 2017-08-10 DOCUMENT NUMBER: AS-2042870100 CREATED / REVISED BY: CHECKED BY: Benson Liu 2017/08/10 Chris Zhong 2017/08/10 6 of 13 APPROVED BY: Welson Tan 2017/08/10 TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).
PAGE 7
APPLICATION SPECIFICATION 4.2 ANTENNA RF PERFORMANCE AS A FUNCTION OF DIFFERENT DISTANCES WITH PARALLEL GROUND Four ground distances from the antenna with parallel ground have been evaluated, and these distances are shown in figure 4.2. The 4 distances are as following: 20mm, 30mm, 40mm, 50mm. The PCB ground size is 90mm*90mm and we move the PCB to four locations for each test.
PAGE 8
APPLICATION SPECIFICATION FIGURE 4.2.1 RETURN LOSS OF ANTENNA AT FOUR LOCATIONS WITH PARALLEL GROUND FIGURE 4.2.2 EFFICIENCY OF ANTENNA AT FOUR LOCATIONS WITH PARALLEL GROUND REVISION: A ECR/ECN INFORMATION: TITLE: EC No: 120458 SHEET No. ISM 433MHz Flex Antenna DATE: 2017-08-10 DOCUMENT NUMBER: AS-2042870100 CREATED / REVISED BY: CHECKED BY: Benson Liu 2017/08/10 Chris Zhong 2017/08/10 8 of 13 APPROVED BY: Welson Tan 2017/08/10 TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).
PAGE 9
APPLICATION SPECIFICATION 4.3 ANTENNA RF PERFORMANCE AS A FUNCTION OF DIFFERENT DISTANCES WITH THE SAME PLANE GROUND Four ground distances with the same plane ground have been evaluated and these distances are shown in figure 4.3. The 4 distances are as following: 20mm, 30mm, 40mm, 50mm.The PCB ground size is 90mm*90mm and we move the PCB to four locations for each test. According to the results, the minimum ground distance from antenna is recommended to be 40mm to achieve acceptable antenna performance.
PAGE 10
APPLICATION SPECIFICATION FIGURE 4.3.1 RETURN LOSS OF ANTENNA AT FOUR LOCATIONS WITH SAME PLANE GROUND FIGURE 4.3.2 EFFICIENCY OF ANTENNA AT FOUR LOCATIONS WITH SAME PLANE GROUND REVISION: A ECR/ECN INFORMATION: TITLE: EC No: 120458 SHEET No. ISM 433MHz Flex Antenna DATE: 2017-08-10 DOCUMENT NUMBER: AS-2042870100 CREATED / REVISED BY: CHECKED BY: Benson Liu 2017/08/10 Chris Zhong 2017/08/10 10 of 13 APPROVED BY: Welson Tan 2017/08/10 TEMPLATE FILENAME: APPLICATION_SPEC[SIZE_A](V.1).
PAGE 11
APPLICATION SPECIFICATION 5.0 RADIATION PATTERN FIGURE 5.1 RADIATION PATTERN OF ANTENNA AT 433MHZ IN FREE SPACE 6.0 THE ANTENNA PERFORMANCE VARIATION WITH CABLE LENGTH 6.0.1 CABLE LOSS ITEM 6.0.1. 1 6.0.1. 2 DESCRIPTION TEST CONDITION REQUIREMENT Frequency Range 400MHz~6GHz 433MHz Attenuation 1m cable measured by VNA5071C ≤1.8dB/m 6.0.2 CABLE LENGTH AFFECT THE ANTENNA PERFORMANCE Balance antenna resonance is insensitive by cable length, but the cable loss will affect the total efficiency.
PAGE 12
APPLICATION SPECIFICATION 6.0.3 FOR EXAMPLE Based on the 100mm cable performance, we can mostly calculate the 300mm cable’s. 100mm cable 300mm cable Frequency Efficiency Efficiency Efficiency cable loss Efficiency (dB) (MHz) (dB) (%) (%) X X-LOSS=Y Y 0.2m*1.8dB/m -2.24 59.62 -2.60 54.87 430 -2.16 60.71 -2.52 55.88 431 432 -2.13 61.15 -2.50 56.28 433 -2.28 59.04 -2.65 54.34 434 -2.49 56.33 -2.85 51.84 435 -2.74 53.21 -3.10 48.97 436 -2.99 50.14 -3.36 46.
PAGE 13
APPLICATION SPECIFICATION 7.0 ASSEMBLY GUIDELINES During the assembly of the antenna in a device, the cable needs to be positioned away from the antenna flex. The antenna cable should not be close to the antenna flex. The cable has to be away from the pattern at least 5mm. FIGURE 7.1 ASSEMBLY GUIDELINE FIGURE 7.2 CABLE BENDING REVISION: A ECR/ECN INFORMATION: TITLE: EC No: 120458 SHEET No.