JPS56144645A - Diversity antenna device for portable radio equipment - Google Patents

Diversity antenna device for portable radio equipment

Info

Publication number
JPS56144645A
JPS56144645A JP4834180A JP4834180A JPS56144645A JP S56144645 A JPS56144645 A JP S56144645A JP 4834180 A JP4834180 A JP 4834180A JP 4834180 A JP4834180 A JP 4834180A JP S56144645 A JPS56144645 A JP S56144645A
Authority
JP
Japan
Prior art keywords
metallic housing
antennas
radio equipment
sensitivity
insulators
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP4834180A
Other languages
Japanese (ja)
Other versions
JPS6150542B2 (en
Inventor
Yumio Kawai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP4834180A priority Critical patent/JPS56144645A/en
Publication of JPS56144645A publication Critical patent/JPS56144645A/en
Publication of JPS6150542B2 publication Critical patent/JPS6150542B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/10—Polarisation diversity; Directional diversity

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Radio Transmission System (AREA)

Abstract

PURPOSE:To enable the invariably stable and high-sensitivity reception of radio waves in any direction, by providing antennas on plural surfaces of the metallic housing of a radio equipment across insulators and by permitting the metallic housing to serve as a reflector. CONSTITUTION:On two counter flanks of metallic housing 1 of the radio equipment, dipole antennas 3 and 3' are fitted across insulators 2 and 2' in parallel to surfaces of metallic housing 1. In this case, the vertical length of metallic housing 1 is set more than about four tenths as long as the wavelength of an in-use radio wave and metallic housing 1 is operated as a reflector. Namely, antennas 3 and 3' are directional ones having a maximum sensitivity of 180 deg. each in a signal direction for vertical polarized waves. Consequently, the antennas are selectively switched to receive radio waves in all directions with high gains, and since any whip antenna is not used, the same sensitivity is held at any time and its portage and handling are facilitated.
JP4834180A 1980-04-11 1980-04-11 Diversity antenna device for portable radio equipment Granted JPS56144645A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4834180A JPS56144645A (en) 1980-04-11 1980-04-11 Diversity antenna device for portable radio equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4834180A JPS56144645A (en) 1980-04-11 1980-04-11 Diversity antenna device for portable radio equipment

Publications (2)

Publication Number Publication Date
JPS56144645A true JPS56144645A (en) 1981-11-11
JPS6150542B2 JPS6150542B2 (en) 1986-11-05

Family

ID=12800688

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4834180A Granted JPS56144645A (en) 1980-04-11 1980-04-11 Diversity antenna device for portable radio equipment

Country Status (1)

Country Link
JP (1) JPS56144645A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6048626A (en) * 1983-08-29 1985-03-16 Nippon Telegr & Teleph Corp <Ntt> Portable radio equipment
US5739795A (en) * 1995-04-05 1998-04-14 U.S. Philips Corporation Portable receiver with antenna
JP2015122557A (en) * 2013-12-20 2015-07-02 三菱電機株式会社 Antenna device
WO2017134715A1 (en) * 2016-02-03 2017-08-10 パナソニックＩｐマネジメント株式会社 Radio wave measurement device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6988909B2 (en) * 2017-10-19 2022-01-05 ソニーグループ株式会社 Antenna device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6048626A (en) * 1983-08-29 1985-03-16 Nippon Telegr & Teleph Corp <Ntt> Portable radio equipment
JPS6356731B2 (en) * 1983-08-29 1988-11-09 Nippon Telegraph & Telephone
US5739795A (en) * 1995-04-05 1998-04-14 U.S. Philips Corporation Portable receiver with antenna
JP2015122557A (en) * 2013-12-20 2015-07-02 三菱電機株式会社 Antenna device
WO2017134715A1 (en) * 2016-02-03 2017-08-10 パナソニックＩｐマネジメント株式会社 Radio wave measurement device
CN108603905A (en) * 2016-02-03 2018-09-28 松下知识产权经营株式会社 Electric wave measurement device
US20180351631A1 (en) * 2016-02-03 2018-12-06 Panasonic Intellectual Property Management Co., Ltd. Radio wave measurement device
US10903893B2 (en) 2016-02-03 2021-01-26 Panasonic Intellectual Property Management Co., Ltd. Radio wave measurement device

Also Published As

Publication number Publication date
JPS6150542B2 (en) 1986-11-05

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